For the least amount of work, the exerting a force angle from horizontal is 76 degree.
How do you compute the angle between exerting the force and the horizontal plane?Fcosθ−μN=maFcosθ−μN=ma
N+Fsinθ−mg=0N+Fsinθ−mg=0
(Unless Fsin>mgFsin>mg)
The angle is measured from the horizontal, and N is the upward normal force to the surface.
Work is defined as force times distance in the direction of motion... or a shift in energy. You want the man to do the work... guess: whole work. So attempt to accelerate the box (madmad) and against friction (NdNd).
So, how about this:
Minimizing force reduces effort for the same distance. As a result, we want the vertical component of force to be equal to and opposite to the weight. Any higher, and there is extra work propelling the box upwards.
This entirely removes friction, leaving only madness.
θ=sin−1[mg/F]
θ=sin−1[mg/F]
W=Fdcosθ+μNd
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How do you find the distance between two objects in physics?.
Because the distance between them is great. The only small mistake that can be made is forgetting to take some square root since what we are trying to do is variable RS-squared.
The distance between two non-pointing objects is usually defined as the minimum distance between pairs of points from the two objects. Formulas are known to calculate the distance between different kinds of objects such as the Distance from point to the line.
The distance between two points is called the line length. Segments of the same length are called congruent segments. You can calculate the distance between two points by drawing a line with a ruler. The distance between two points is the length of the line segment connecting the two points on the plane.
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how will you know that the pressure of your system is equalized and that it is okay to record an initial and/or final volume?
when the burets' and the funnel's meniscus are at a same height. The system will be under equal pressure at this moment. This will equalize the pressure in your system.
And that it is acceptable to record the first and/or last volume. In contrast to an articular disc, which completely divides a joint cavity, a meniscus is a crescent-shaped fibrocartilaginous anatomical structure. meniscus are found in the knee, wrist, sternoclavicular, acromioclavicular, and temporomandibular joints in humans; they may also be found in other joints in other animals.
The force perpendicular to an object's surface that is delivered per unit area over that force is known as pressure.
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students are doing an experiment near an empty pool. a student of mass 40kg is standing on one end of a board as the board hangs over the pool as shown. the board is of uniform density, has a length l, and is positioned such that the pivot point is l/3 from the end of the board. the board is just about to tip over into the pool. how far from the pivot point must a 60kg student stand so that the board is just about to tip over? reddit
The correct option about his position is : At 2L/9 you will see it tip over
Why does weight change and mass does not ?Due to the fact that mass is the quantity of matter contained in an item and does not change with gravity, mass is always the same. As long as the amount of matter in an object doesn't change, its mass will remain constant. In contrast, an object's weight refers to the force of gravity acting on it.
No matter where you are in the cosmos, you have the same mass since mass is a measurement of how much matter is in an object. But because weight measures the force between an object and the body it is resting on, it fluctuates (whether that body is the Earth, the Moon, Mars, et cetera).
Given : A mass of student 40 kg
length is represented by l
Position of the pivot point from the board = l/3
The student should stand at 2L/9 you will see it tip over so as to weigh of 60kg.
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What are the 7 stages of mitosis in order?.
There are five phases namely, prophase, prometaphase, metaphase, anaphase and telophase. Final cell division after telophase, cytokinesis is regarded as the sixth phase of mitosis.
Mitosis begins with the prophase.
Chromosomes gather and are made visible. Centrosomes are the origin of spindle fibres.Nucleolus dissolves as nuclear envelope disintegrates.
Second stage of mitosis is known as prometaphase. Chromosomes continue to compact. Centrosomes travel in the direction of their opposite poles as mitotic spindle microtubules attach to kinetochores.
Third phase is metaphase. Each chromosome is in the centre.
The fourth stage is known as anaphase. Sister chromatids which were previously bound together by cohesin proteins, separate and are drawn in opposite directions.
The fifth stage is called telophase. The nuclear envelope material that surrounds each set of chromosomes decondenses as the chromosomes arrive at opposite poles.
The last stage of mitosis is known as cytokinesis. In animal cells, the daughter cells are divided by a cleavage furrow.
The splitting of cytoplasm into two distinct daughter cells happen in plant cells.
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at time t 0 a solid conducting sphere is given total charges q that is uniformly spread throughout its volume. twi students discuss whether or not this charge distribution is stable
At time t = 0 a solid conducting sphere is given total charges q that is uniformly spread throughout its volume it is a stable distribution.
Why is it stable ?Student 1 : At time t = 0 a solid conducting sphere is given total charges q that is uniformly spread throughout its volume it is a stable distribution.
Student 2 : No its a unstable distribution.
Student 1 : But when the charges are equally given in the volume of sphere the charges will also be equal and when charges are equal it is said to be stable.
Student 2 : What about the resonance, because of it the stability may not exist.
Student 1 : When we talk about resonance here we just mean the charge distribution over two different atoms in a molecule.
Student 2 : As you know, resonance structures are considered to be more stable due to charge distribution.
Student 1 : If the charge is distributed between two atoms in the molecule, there is a gap between the charges and it is less repulsive and more stable than a molecule with no charge distribution.
Student 2 : In resonance , generally the negative charge goes on most electronegative atom.
Student 1 : Yes but on the other hand, the molecule gains stability because the positive charge is transferred to the less electronegative atom.
What is stable distribution?A stable distribution is when the charges are equally given in the volume of sphere the charges will also be equal .
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What happens to gravitational potential energy of mass increases?.
Gravitational potential energy increases as weight and height increases.
Potential energy is stored or conserved energy in a material or object. The amount of stored energy depends on the arrangement, organization, and state of the object or substance.
You might think of it as energy with the "potential" to be productive. Any changes to the object's position, configuration, or status will result in the release of any stored energy.
For instance, in order to compress a spring, energy is required, but what happens to that energy once the spring has been broken It is impossible to generate or destroy energy because it can only transform from one form to another.
The kinetic energy that was used to compress our spring has now been converted to potential energy
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a single rectangular slit of width of 50 is illuminated by red light with a wavelength of 600 nm. a screen is placed a certain distance behind the slit so that the central bright band of the diffractio pattern is 18 mm wide
A single rectangular slit of width of 50 is illuminated by red light with a wavelength of 600 nm and a screen is placed a certain distance behind the slit so that the central bright band of the diffraction pattern is 18 mm wide then the width of slit is 1.667 mm .
How is the width calculated?Given ,
λ = 600 × 10⁻⁹
D = 50
d = 18 mm
The position of central maxima in the diffraction pattern is
w = Dλ / d
∴ w = (50 × 600 × 10⁻⁹ ) / (18 × 10⁻³ )
∴ w = 30000 × 10⁻⁹ / 18 × 10⁻³
∴ w = 30 × 10⁻⁶ / 18 × 10⁻³
∴ w = 1.667 × 10⁻³
∴ w = 1.667 mm
Hence, the width of the central bright fringe of the diffraction pattern will be 1.667 mm.
What is the central bright band of diffraction?The width of the central diffraction peak is found to be inversely proportional to the slit width. Increasing the width magnitude a decreases the angle θ at which the intensity first goes to zero, narrowing the central band.Reducing the width of the slit also increases the angle θ and widens the central band. The width and spacing of the bright bands on the screen behind the slit depend on the distance between the slit and the screen.Therefore, the light intensity distribution becomes diffracted light.
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The following images show four identical Sun-like stars and their companion planets, all traveling in circular orbits. In each case, the mass of the planet is given in Jupiter masses and the orbital distance is given in Astronomical Units (AU). Rank each case based on the strength of the gravitational force exerted by the extrasolar planet on its central star, from weakest to strongest. If you think that two (or more) diagrams should be ranked as equal, drag one on top of the other(s) to show this equality. (Not to scale)
Weakest- one Jupiter mass and 2 Au
Same- Four Jupiter Masses 2 AU & 1 Jupiter mass 1AU
Strongest- 2 Jupiter masses 1 AU
One Jupiter mass and 2 Au are the weakest. The same: Four Jupiter masses of 2 AU and one Jupiter mass of 1 AU and Strongest: 1 AU and 2 Jupiter masses.
By far the largest planet in the solar system, Jupiter is more than twice as massive as all the other planets put together. Jupiter is the fifth planet from our Sun. The swirls and stripes of Jupiter are actually ammonia and water clouds floating in a hydrogen and helium atmosphere.Jupiter has at least 79 moons, four of which are active, planet-like worlds that range in size from just smaller than the moon of Earth to larger than Mercury. It also has a weak ring system.The astronomical unit is a measurement of length that is roughly equal to 150 million kilometers or 8.3 light-minutes, or the distance between the Earth and the Sun. As Earth orbits the Sun, its actual distance from the Sun changes by around 3%, going from its maximum to its minimum and back again once per year.To know more about Jupiter
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a 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they collide at the intersection.
According to the given statement Final velocity when they stick together is 8.735i^ + 11.25j^
What is collision and momentum?The unit of momentum is kg ms -1. Momentum is a vector parameter that is influenced by the object's direction. During collisions involving objects, momentum is a relevant concept. The final velocity before a collision between two objects equals the total motion after the impact (in the absence of external forces).
Briefing:From conservation of momentum
Initial momentum = final momentum
m u +M U =(m+M) V
2000×25 i^ +1500×30 j^ =(2000+1500) V
V = 8.735i^ + 11.25j^
Final velocity when they stick together is 8.735i^ + 11.25j^
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The complete question is -
A 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they collide at the intersection. Find the direction and magnitude of velocity of the wreckage after the collision, assuming the vehicles stick together after the collision.
How will the weight and mass of a rover on Mars compare to its weight and mass on Earth?.
The mass of a frame or object on the surface of the Earth is similar to its mass on the floor of Mars. this is because the composition and the quantity of count in that body or object remain the same.
Wm=mgm=500×3.seventy one=1855 N. W m = m g m = 500 × 371 = 1855 N . Calculating R, the ratio of weights of the rover on Mars to its weight on the planet R=WmWe=18554905=0.38.
This is due to the fact weight is the dimension of the pressure of gravity on an object. although the individual could incorporate an identical quantity of depending, their weight might most effectively be 38% of their weight in the world. this is because the force of gravity is lower on Mars.
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What is the example of conjunctive adverb?.
A Conjunctive adverb is a word that connects to complete clauses with each other and define their relationship.
An adverb is a word or phrase that defines and qualifies the quality of the verb. That means it tell us that how and when the things are happening for the particular adjective or verb. For an example, fast running. Here, the word fast is the adverb because the word fast is telling us about the nature of running which is fast.
A conjunctive adverb is a word that connects two sentences together.
For an example, He is said since I told him about college.
Here, "He is said" since "I told him".
So, the world "since" is the conjunctive adverb because it is connecting the two complete different sentence.
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What is a substance
Steam (18kg/kmol) at 1600psi and 1000°F enters a turbine operating at steady state as shown. P. = 1600 psi Turbine 22% of the entering mass flow is extracted by duct T = 1000° F 2 at 160psi and 450°F. The rest of the steam exits 2 3 Pz = 1 psi at duct 3 at 1psi and 102°F. The turbine develops a power output of 9x108 Btu/hr. Heat transfer to T, = 102°F P2 = 160 psi the surroundings accounts for 7% of the power T, = 450°F output. Neglecting kinetic and potential energy effects and assuming that steam behaves as ideal gas at constant y=1.35, a) Determine the fluid's specific gas constant in Btu/lb/°R. b) Determine the mass flow rate of the steam entering the turbine in lb/hr (Answer: 2.738x10 lb/hr) c) How would your result in part b) change if the inlet pressure is 1700psi and WHY?
The fluid specific gas constant of the steam from the turbine is 0.1103 But/lb/°R, the mass flow rate is 2.7380 lb/ hr and the enthalpy and mass flow rate remain constant and volume changes if there is change in inlet pressure.
(a) Power output = 9 × 10⁸ Btu/hr
Heat transfer to the surrounding accounts = 7% of heat transfer of the output
Gas constant = y = 1.35
Temperature T₁ = 1000° F
Temperature T₂ = 450° F
Temperature T₃ = 120° F
Mass of steam = 18 Kg/Kmol
The fluid specific gas constant = R =
= R = Rₙ / m
= R = 1.986 / 18
= R = 0.1103 But/lb/°R
(b) Mass flow rate of the turbine during entry = Q =
= Q = 7% of the power output
= Q = ( 7 × 9 × 10 ⁸ )/ 100
= Q = 63 × 10 ⁶ Btu/hr
Now power developed by the turbine before steam = m×(h₁ - h₂)
= m × (h₁ - 0.22m)
Power developed by the turbine after steam = m×(h₂ - h₃)
= 0.78m × (h₂ - h₃)
Total Power = m×(h₁ - h₂) + 0.78m × (h₂ - h₃)
Applying the thermodynamics formula,
= [m×(h₁ - h₂) + 0.78m × (h₂ - h₃)] - Q = W
= [m × ( CₐT₁ - CₐT₂) + 0.78m × ( CₐT₂ - CₐT₃)] - Q = W
And we know that , R = Cₐ - Cₙ
and, γ = Cₐ / Cₙ
= Cₐ = (R × γ) / (γ - 1)
= Cₐ = 0.4228 Btu/lb°F
Substituting this in [m × ( CₐT₁ - CₐT₂) + 0.78m × ( CₐT₂ - CₐT₃)] - Q = W
= [m × ( CₐT₁ - CₐT₂) + 0.78m × ( CₐT₂ - CₐT₃)] = W + Q
= m = 963000000 / 347.30
= m = 2.7380 lb/hr
(c)If there is change in the inlet pressure then the volume changes but the enthalpy and mass flow rate remain constant.
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Which of following is not a polynomial?.
Out of the following option A, option B and option D are not polynomials.
A ) x² + 1 / x,
This can be written as x² + x⁻¹.
Since the exponent of the variable in second term is negative, it is not a polynomial.
B ) 2 x² - 3 √ x + 1,
This can be written as 2 x² - 3 x ^ 1 / 2 + 1.
Since the exponent of the variable in second term is rational, it is not a polynomial.
C ) x³ - 3 x + 1.
This is a polynomial because all the exponentials are positive whole numbers.
D ) 2 x ^ 3 / 2 - 5 x.
Since the exponent of the variable in first term is rational, it is not a polynomial.
Therefore, option A, B and D are not polynomials.
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at the time the hypothesis was suggested, what major problem was identified with the idea that the sun was powered by gravitational contraction?
This process would power the Sun for only about 25 million years, but geologists already had evidence the Earth was much older than that.
gravity, additionally called gravitation, in mechanics, the frequent force of appeal performing among all be counted. it's far by way of far the weakest recognized force in nature and for this reason, plays no position in figuring out the inner houses of everyday matter.
The gravitational attraction among the authentic gaseous matter inside the Universe allowed it to coalesce and form stars which finally condensed into galaxies, so gravity is liable for some of the huge-scale structures in the Universe. Gravity has a countless range, although its outcomes become weaker as items get farther away. Gravity is maximum accurately described by way of the overall concept of relativity (proposed by way of Albert Einstein in 1915), which describes gravity now not as a pressure, but as the curvature of spacetime, because of the uneven distribution of mass, and causing loads to transport alongside geodesic strains. the character and mechanism of gravity became explored by way of a wide variety of historical scholars.
In Greece, Aristotle believed that objects fell closer to the Earth due to the fact the Earth turned into the center of the Universe and attracted all of the mass in the Universe in that direction of it. He additionally idea that the velocity of a falling item must boom with its weight, an end which was later shown to be false. while Aristotle's view become extensively conventional throughout historical Greece, there have been other thinkers which include Plutarch who efficaciously expected that the appeal of gravity was not specific to the Earth.
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coma
as the comet accelerates toward the Sun, its surface temperature increases, and ices begin to vaporize into gas that easily escapes the comet's weak gravity
some of the escaping gas drags away dust particles from the nucleus, and the gas and dust create a huge, dusty atmosphere called...
As the comet accelerates toward the Sun, dust particles from nucleus, gas and dust create a huge, dusty atmosphere called a coma
The comet, sometimes known as the "dirty snowball," is fully frozen in essence when it is far from the Sun. We refer to this frozen core as the comet's nucleus when it approaches the sun from the inside. A comet's surface temperature rises as it moves closer to the Sun, and its ices start to evaporate into gas that can readily escape the comet's weak gravity.
The gas and dust combine to form a massive, dusty environment known as a coma when some of the departing gas pushes dust particles away from the nucleus. As the comet moves deeper into the inner solar system, more gas and dust are pushed away from the Sun, generating the comet's tails. The coma also expands throughout this process. The length of a comet's tail can reach hundreds of millions of kilometres.
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What is the primordial heat?.
The intrinsic heat energy generated via evaporation in a planet throughout its initial several million years of evolution is referred to as primordial heat.
The interior heat energy generated via dispersion in a planetary during its initial few million years of existence is known as primordial heat. The primary sources of primordial heat were accretional energy (the energy deposited based on the forecasted planetesimals) as well as differentiation energy.
The heat lost mostly by Earth as it cools from its initial formation has been referred to as primordial heat.
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what is the angular velocity (in rad/s) of a 62.0 cm diameter tire on an automobile traveling at 90.5 km/h? (enter the magnitude.)
The angular velocity is 55.6rads/s.
What is angular velocity?
The rotation rate of an object, or how quickly it revolves or rotates in relation to another point, is measured vectorially as angular velocity. Angular velocity is simply the rate of rotation or revolving around an axis of an object.
What is magnitude?
Magnitude serves as the common denominator for both vector and scalar quantities. Their definition states that scalar quantities are those that have only magnitude.
Using the second relationship in v = r, vr = v r, and knowing v and r, we can get the angular velocity. To calculate the angular velocity, we will use the formula = vr. = v r.
If an object's radius is r, its linear speed is v, and its angular velocity is measured in radians per second, then v = r.
Substituting the values, in the formula
=62.0cm*90.5
V=55.6
Therefore, the angular velocity is 55.6rads/s.
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What results from the human farmers visit to Animal Farm?.
The farmers worry that the livestock will also rebel. The efficiency with which the farm is operated impresses the farmers.
The farmers worry that the livestock will also rebel. The efficiency with which the farm is operated impresses the farmers. The farmers promise to put the same kinds of processes in place. The farmers make the decision to become active members of the farm. The animals' mistrust of the farmers angers the farmers.
After a two-day episode in which the farmhands neglected and malnourished the animals, the uprising begins. As soon as the cows kick down the barn door, the rest of the animals go mad. The animals run away every person from the farm as Jones tries to whip them, starting the uprising.
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a 6.00 gg bullet is fired horizontally into a 1.20 kgkg wooden block resting on a horizontal surface. the coefficient of kinetic friction between block and surface is 0.200. the bullet remains embedded in the block, which is observed to slide 0.200 mm along the surface before stopping. (a) What was teh initial speed of the bullet?
(b) What kind of collision took place between the bullet and the block? Explain your answer comparing the values of the kinetic energy before and after the collision.
(c) Calculate the impulse of the block from the moment just after the impact to his final position. Analyze the result.
The initial speed of the bullet should be 159.32 m/s.
What was the initial speed of the bullet?Let the initial speed of the bullet be V.
Momentum will be conserved after bullet hits the block . If v₁ be the common velocity of bullet block system
6.00 x 10⁻³ x V + 0 = ( 6 x 10⁻³ + 1.2 ) v₁
= ( 6 + 1200 ) x 10⁻³ v₁
v₁ = (6 / 1206 ) x V
1 / 201 V
Now the moving bullet - block system faces friction force and ultimately they come to rest , so
Kinetic energy of bullet block system = work done by friction
Kinetic energy of bullet block system =
1/2 x ( 6 + 1200 ) x 10⁻³ x ( 1 / 201 V )²
work done by friction
= frictional force x displacement
μ mg x d ( μ is coefficient of friction of surface , m is mass of the bullet block system and d is displacement )
0.16 x ( 6 + 1200 ) x 10⁻³ x 9.8 x .2
= 38.592 x 9.8 x 10⁻³
1/2 x ( 6 + 1200 ) x 10⁻³ x ( 1 / 201 )² V ² =
= 38.592 x 9.8 X 10⁻³
V² = 25382.65
V = 159.32 ms⁻¹
What kind of collision took place and calculate the impulse of the block?The impulse of the friction force produced by the surface during the impact is disregarded when we apply conservation of momentum to the collision. This makes sense given that the force is far less than the forces that the bullet and block will exert on one another when they collide. The block moves after the collision and is affected by this force, which removes all of the kinetic energy.
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What are the 3 most elements of design thinking?.
By concentrating on the three fundamental design thinking concepts, or the "3 E's," of empathy, expanded thinking, and experimentation the next time you need to find a solution, you may increase the creative ability of your team.
What are the 8 principles of design, as well as the 7 elements?Rhythm, pattern, concentration, contrasts, unity, & movement are the seven principles of art and design. The following are some of the components of art and design: line, shape/form, space, value, color, and texture.
The seven design tenets are significant for what reasons?These guidelines indicate how the artist employs artistic components to produce their works and communicate their vision, and they are vital to the evaluation of the many work pieces. Less easily defined components are part of design concepts in the arts.
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in considering the earth-moon orbital system, complete the following statements: the earth has the same strength gravitational pull on the moon than moon has on the earth, because of newton's 3rd law . the acceleration of the moon is less than the earth's acceleration.
The statement ' the earth has the same strength gravitational pull on the moon than the moon has on the earth, is because of Newton's 3rd law. The acceleration of the moon is less than the earth's acceleration' is true.
According to Newton's third law of motion, there is an equal and opposite reaction to every force. Hence, according to Newton's third law, the force with which the moon pulls the earth is equal and opposite to the force with which the earth pulls the moon. The force that is exerted by the earth on the moon will be called as the gravitational pull.
However, the acceleration of the earth is more as compared to that of the moon. This is because the earth travels a larger distance as compared to than of the moon. Hence, the statement above is true.
The question will correctly be written as:
The earth has the same strength gravitational pull on the moon than moon has on the earth, because of Newton's 3rd law. the acceleration of the moon is less than the earth's acceleration. true or false
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consider that the ball travels one revolution of its path in t second. what is the speed of the ball in terms of l, r, and t?
The speed of the ball in term of l, r, t is given as,
l = r/t
Where, l is the speed of the ball, r is the distance travel by the ball and t is the time to complete one revolution.
Every day, each of us makes a trip to a different location and covers a distance along the way. But from the perspective of physics, distance is something that takes into account a variety of things.A ball is moving consistently translationally. The ball moves down the path at a constant pace and can follow a straight or round path. The speed of the ball is constant and has the same magnitude and direction for every component.
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Please help me please I will give brainliest
A car covers the road from city A to city B, 40 km, in 30 minutes, and the road from city B to C, 30 km, in 15 minutes. find the average speed with which the car moves all the way from A to C
Answer:
0.667m/s
Explanation:
since speed(v) = d/t
average Speed(v) = d1 - d2/ t1 - t2
40-30/ 30-15
= 0.667m/s
the weight of passengers on a roller coaster increases by 54 % as the car goes through a dip with a 36 m radius of curvature.
The sum of all the energy in motion and all the energy that is stored in the system is known as mechanical energy. Thus, the car would be moving at 36 metres per second when it reached the bottom of the dip.
What is mechanical energy ?Potential energy plus kinetic energy are combined to form mechanical energy. According to the principle of mechanical energy conservation, mechanical energy is constant in an isolated system when only conservative forces are acting on it.The fact that mechanical energy can be turned into other forms of energy and that it never runs out are advantages. The devices that enable you to enjoy the advantages of mechanical energy have drawbacks, including the possibility of safety hazards as well as wear and tear and high repair costs.Mechanical energy is the energy that an object possesses when it is moving or the energy that an object possesses due to its position. Renewable energy is also fueled by mechanical energy. In order to efficiently produce electricity or convert energy, many sources of renewable energy depend on mechanical energy.To learn more about mechanical energy refer :
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3. you were able to partially polarize the light reflected off a plate of glass. what happened to the light which passed through the glass?
Polarization occurs to light that passes through the filter. The axes of polarisation of the various light wavelengths will rotate to varying degrees in different sectors of the taped glass.
How does polarised lighting function?A linear polarizer absorbs the orthogonal plane and transmits light that is uniformly vibrating in one plane. We frequently use a concept known as the vibrational pattern to describe a single plane or beam of polarised light. The light is linearly polarised if the vibrations are only in one direction.
What makes polarised light unique?Light becomes polarized—all of it is in one directional field—when it bounces off a surface, like water.
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promotes glomerular hypertension and hyperfiltration caused by efferent arteriolar vasoconstriction and also promotes systemic hypertension.
Angiotensin II promotes glomerular hypertension and hyperfiltration caused by efferent arteriolar vasoconstriction and also promotes systemic hypertension.
What is Angiotensin II ?A drug called angiotensin II is used to treat hypotension brought on by septic shock or other types of distributive shock. It is marketed as Giapreza, a synthetic vasoconstrictor peptide that is equivalent to the human hormone angiotensin II.The muscle walls of tiny arteries contract as a result of angiotensin II, raising blood pressure. Additionally, angiotensin II causes the release of aldosterone from your adrenal glands and an antidiuretic hormone from your pituitary gland.The primary RAS effector molecule is angiotensin II. It raises blood pressure, encourages the renal tubuli to retain sodium and water, and prompts the adrenal gland to secrete aldosterone.To learn more about Angiotensin refer :
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at this solar plant, more than 1,000 freestanding computer-controlled mirrors follow the arc of the sun and focus their reflecting sunlight toward a 40-story-high tower (see photo), where water is boiled, generating steam to drive a turbine that, in turn, produces electricity.
Computer-controlled flat mirrors (called heliostats) track the sun along two axes and focus solar energy on a receiver at the top of a high power.
The focused energy is used to heat a transfer fluid (over 1,000° F) to produce steam and run a central power generator a solar power plant called Cesar 1 consisting of an 80 m high concrete tower with several receivers and a heliostat field of 300 units of 40m^2 each producing electric power of 1 MWe. From: The Institute of Energy's Second International Conference on Ceramics in Energy Applications, 1994.
Electric utility companies are using mirrors to concentrate heat from the sun to produce environmentally friendly electricity for cities, especially in the southwestern United States. The southwestern United States is focusing on concentrating solar energy because it's one of the world's best areas for sun- light.
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How much force in newtons is required to accelerate a shootout weighing 4 kg at 21m/s
84 Newton of force is required to accelerate a shootout.
F = ma
F = force,
m = mass, given = 4kg
a = acceleration, given = 21 m/[tex]s^{2}[/tex]
Put these values in formula, F = ma
F = 4 × 21
F = 84 N
Hence, 84 Newton of force is required to accelerate a shootout.
A push or pull of an object is called force. The unit of force is kg m/[tex]s^{2}[/tex] or newton and is represented by N.
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What is the gravitational acceleration on Planet Y if there is an increase in gravitation potential energy equal to 352 J when a 8.27 kg is lifted 15.43 m? (1 point) 0 27.6) O 188.66 ) 2.763 42.560 44917.35)
The gravitational acceleration on the planet Y will be 59.52 m/[tex]s^{2}[/tex].
Given,
Gravitational potential energy, [tex]P_{E}[/tex] = 352 J
Mass of an object, m = 8.27 kg
Lifted to the height, R = 15.43 m
Gravitational potential energy at the height R can be calculated as:
[tex]P_{E}[/tex] = - [tex]\frac{GMm}{r}[/tex]
As GM = gR^2
Potential energy will be -mgR
and for r = R, Potential energy will be - (mgR)/2
m = mass of the object (8.27 kg)
So, [tex]P_{E}[/tex] = - (mgR)/2
Now to calculate g (gravitational acceleration), g =-([tex]P_{E}[/tex]×2)/mR
=(-352×2)/8.27×1.43
g = 59.52 m/[tex]s^{2}[/tex]
Hence, gravitational acceleration on the planet Y will be 59.52 m/[tex]s^{2}[/tex].
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