Answer:
1.58901572907
Explanation:
n = 1 / sin(c)
[tex]n=\frac{1}{sin(c)}[/tex]
What would the resultant force be on an object that has a mass of 25 kg and is accelerated at a rate of 2.36 m/s^2?
Please show all work and not just the answer(s).
Please help ASAP!!!
Answer:
resultant force = 59 N
Explanation:
we know the formula: Force = mass * acceleration
Force = 25 kg * 2.36 m/s²
Force = 59 N
Pls help me, tomorrow is the deadline of my assignment
Answer:
6- B
7- I think A
8-B
9-D
10-A
What do you think is the reason scientists use an ellipse rather than a circle as
the model for a planetary orbit?
Answer:
Newton's laws of motion and gravity explained Earth's annual journey around the Sun. Earth would move straight forward through the universe, but the Sun exerts a constant pull on our planet. This force bends Earth's path toward the Sun, pulling the planet into an elliptical (almost circular) orbit.
A ball rolls off a table with a horizontal velocity of 3 m/s. If it takes 0.3 seconds for the ball to reach the floor, how high above the floor
is the tabletop? Consider the value of g approximately as 10 m/s2
The height of the table above the ground is 0.45 m.
Data obtained from the questionFrom the question given above, the following data were obtained:
Horizontal velocity (u) = 3 m/sTime (t) = 0.3 sAcceleration due to gravity (g) = 10 m/s²Height (h) =? How to determine the heightThe height of the table can be obtained by using the following formula:
h = ½gt²
h = ½ × 10 × 0.3²
h = 5 × 0.09
h = 0.45 m
Thus, the height of the table is 0.45 m
Learn more about motion under gravity:
https://brainly.com/question/26275209
A pump raises 0.15m3 of water per minute from a well 7.5m deep calculate the power required to drive the pump if it’s only 75% efficient
Answer:
= 245.25Explanation:
150 x 7.5 x 9.81 =11036.25ans / 60 =183.9ans / 75 x 100 = 245.25what is true about solar energy hitting earth?
A. Differences by latitude drive atmospheric circulation
B. It is roughly the same at all latitudes.
C. It is most focused at the poles.
D. It is not focused at the equator.
A 500 N car is lifted upward by a hydraulic platform a distance of 6.0 m. How much power is produced by the hydraulic platform if it takes 12.0
seconds to lift it up to 6.0 m off the ground?
O 3,000 Joules
O 500 N
0 250 Watts
1,000 Watts
Answer: (Note: The weight of a 50-kg object is approximately 500 N; it takes 500 N to lift the object up.) Lifting a 25 kg crate vertically 4 meters. W = (~250 N)*(4 m)
Explanation:
k-12 !
What is the role of motivation in physical activity?
Motivation helps you to achieve your goals.
Motivation is supported by a variety of activity.
Motivation is what keeps you going in the moment where you might want to give up.
All of the above
The role of motivation in physical activity is Motivation is what keeps you going in the moment where you might want to give up.
What is Physical Activity ?Physical Activity can be regarded as any bodily movement which brings about contraction of skeletal muscles and involves energy expenditure.
However, one need some motivation in order to achieve his desired Physical Activity goals and this keeps him going in the moment where you might want to give up.
Learn more about Physical Activity at;
https://brainly.com/question/1365564
Answer:
it was all of the above
Explanation:
I took the test
Problem 2 More Basketballs Use these values of initial position and initial velocity in the following questions.
Initial position: ___1.0___ m above ground
Initial velocity: ___6.3 __ m/s, up
Problem Try to answer the following questions:
(a) What is the maximum height above ground reached by the ball?
(b) What are the magnitude and the direction of the velocity of the ball just before it hits the ground?
Show Your Problem Solving
Steps: Show these below:
1) Draw a Sketch
2) Choose origin, coordinate direction
3) Inventory List – What is known?
4) Write the kinematics equation(s) and solution of Part (a):
5) Write the kinematics equation(s) and solution of Part (b):
We have that the the maximum height and magnitude and the direction of the velocity is mathematically given as
a)V=5.42m/s
b)
Magnitude=9.8m/s^2Direction =DownFrom the question we are told
Problem 2 More Basketballs Use these values of initial position and initial velocity in the following questions.
Initial position: ___1.0___ m above ground
Initial velocity: ___6.3 __ m/s, up
Motiona)Generally the equation for Motion is mathematically given as
[tex]S=ut+\frac{1}{2}at^2\\\\Therefore\\\\-1.5=0+0.5+\frac{1}{2}*9.8t^2\\\\t=0.55sec\\\\Therefore\\\\V^2=u^2+2as\\\\V^2=0^2+2*-9.8*(-1.5)[/tex]
V=5.42m/sb)
Since whilst in air the gravitational force can only act on it
therefore
Acting in downward direction
its specs are
Magnitude=9.8m/s^2Direction =DownFor more information on Motion visit
https://brainly.com/question/16517842
energy you can hear is what kind of energy?
Answer:
Sound Energy
Explanation:
Good luck :)
I'll give you a BRAINLIEST if you help me with these questions and they have to be correct.
1. Which of the following types of mirrors has an optical axis?
A) Convex Mirror
B) Concave Mirror
C) Double Convex Mirror
D) All of the choices are correct
2. Which of the following types of mirrors refracts light rays that pass through it outward and away from the optical axis?
A) Convex Mirrors
B) Plane Mirrors
C) Concave Mirrors
D) All of the choices are correct
3. The bending ability of a substance is recorded on the index of refraction.
True
False
4. Light travels at the same speed at all times.
True
False
Describe one common critique or criticism of Utilitarianism. To what extent do you agree or disagree with this criticism?
In a hydrogen atom, an electron with a charge of (-)1.6E-19 C orbits a proton with the same but positive charge at a distance 61 picometers away (that's trillionths of a meter or 10-12 m). What electric force F, in N, binds the two particles together
This question involves the concept of Colomb's Law and electrostatic force.
The electrostatic force will be "6.2 x 10⁻⁸ N".
COLOMB'S LAW:According to Colomb's Law, every charge exerts an electrostatic force on the other charge, which is directly proportional to the product of the magnitudes of both the charges and inversely proportional to the square of the distance between them.
[tex]F = \frac{kq_1q_2}{r^}[/tex]
where,
F = electrostatic force = ?k = Colomb's constant = 9 x 10⁹ N.m²/C²q₁ = magnitude of first charge = 1.6 x 10⁻¹⁹ Cq₂ = magnitude of second charge = 1.6 x 10⁻¹⁹ Cr = distance between charges = 61 x 10⁻¹² mTherefore,
[tex]F = \frac{(9\ x\ 10^9\ N.m^2/C^2)(1.6\ x\ 10^{-19}\ C)(1.6\ x\ 10^{-19}\ C)}{(61\ x\ 10^{-12}\ m)^2}[/tex]
F = 6.2 x 10⁻⁸ N
Learn more about Colomb's Law here:
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A good easy question for a science minded person!! 20 points for whoever answer
Which of the following best describes an inverse-square relationship
A. A camera flashbulb produces a sudden burst of light.
B. Daylight on Mars is dimmer than daylight on Earth.
C. When you blow out a candle the room darkens
D. Installing compact fluorescent bulbs to lower your electric bill
Answer:
the answer is the first letter in the alphabet
What other questions do you have about the effect of gravity on objects?
Answer:
Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is.
Explanation:
The mass of an astronaut in space will be:
less than on earth
the same as on earth
greater than on earth
How does black paint interact with a light wave?
Answer:
Light rays that come from a source such as the sun reflect off items and enter our eye. ... While black objects absorb the energy from all colors and become hot, the objects gradually release some of that energy back into the air around it
Explanation:
Hi Army Pls Mark brainliest
Convert 37°C to K.
a 310.15 K
b 187.6K
c567.5 K
d 245.7 K
Answer:
A. 310.15K
Explanation:
Celsius Temperature Conversion Formula
[K] = [°C] + 273.15
K = C + 273.15
= 37+273.15
= 310.15
how long will it take for a motorcycle to come to a stop from 35 m/s if it slows down with an acceleration of -12m/s/s?
Answer:
It would take 3 seconds approximately.
Explanation:
since it's going to stop it's final velocity is 0m/s
Now,
acceleration = (v-u)/t
or, a = (0-35)/t
or, -12 = -35/t
or, t = -35/-12
so, t = 2.9 seconds.
Like geothermal energy, solar heat is another clean and sustainable source of energy. Under ideal conditions (midday, no
clouds) photovoltaic cells, often called solar panels, can produce as much as 200 watts per square meter. Even though geothermal produces less energy than this, what advantage does geothermal energy have over solar energy?
Answer:It is known that geothermal vitality has numerous preferences compared with sun oriented and wind frameworks. These points of interest incorporate climate confirmation, base stack, incredible steadiness, and tall warm effectiveness. The entire introduced capacity of geothermal power, be that as it may, is much less than sun powered and wind.
Answer:
The amount of sunlight received depends on time of day and weather. So, the amount of solar energy produced can be inconsistent. However, heat flows out of Earth all the time, so the supply of geothermal energy is more reliable and consistent.
Explanation:
PLATO
A catcher “gives” with the ball when he
catches a 0.206 kg baseball moving at 18 m/s.
If he moves his glove a distance of 4.14 cm,
what is the average force acting on his hand?
A) Answer in units of kN
B) Repeat for the case in which his glove and
hand move 11 cm.
Answer in units of N.
Answer:
A. 0.806 kN
B. 0.303 kN
Explanation:
A.The kinetic energy of the ball is ...
KE = 1/2mv² = 1/2(0.206 kg)(18 m/s)² = 33.372 J
The work required to reduce this to zero over a distance of 4.14 cm is ...
W = Fd
F = W/d = (33.372 J)/(0.0414 m) = 0.806 kN
__
B.When the distance is 11 cm, the force is ...
F = (33.372 J)/(0.11 m) = 0.303 kN
a ball is dropped from rest at a height of 45.0 m above the ground. ignore the effects of air resistance. What is the speed of class of the ball when it is 10.0 m above the ground
So, the final velocity of the ball when it is 10.0 m above the ground approximately 26.2 m/s.
IntroductionHi ! In this question, I will help you. This question uses the principle of final velocity in free fall. Free fall occurs only when an object is dropped (without initial velocity), so the falling object is only affected by the presence of gravity. In general, the final velocity in free fall can be expressed by this equation :
[tex] \boxed{\sf{\bold{v = \sqrt{2 \times g \times h}}}} [/tex]
With the following condition :
v = final velocity (m/s)h = height or any other displacement at vertical line (m)g = acceleration of the gravity (m/s²)Problem SolvingWe know that :
[tex] \sf{h_1} [/tex] = initial height = 45.0 m[tex] \sf{h_2} [/tex] = final height = 10.0 mg = acceleration of the gravity = 9.8 m/s²Note :
At this point 10 m above the ground, the object can still complete its movement up to exactly 0 m above the ground.
What was asked :
v = final velocity = ... m/sStep by Step
[tex] \sf{v = \sqrt{2 \times g \times \Delta h}} [/tex]
[tex] \sf{v = \sqrt{2 \times g \times (h_1 - h_2)}} [/tex]
[tex] \sf{v = \sqrt{2 \times 9.8 \times (45 - 10)}} [/tex]
[tex] \sf{v = \sqrt{19.6 \times 35}} [/tex]
[tex] \sf{v = \sqrt{686}} [/tex]
[tex] \boxed{\sf{v \approx 26.2 \: m/s}} [/tex]
ConclusionSo, the final velocity of the ball when it is 10.0 m above the ground approximately 26.2 m/s.
See More :The relationship between acceleration and the change in velocity and time in free fall https://brainly.com/question/26486625HELP PLEASE TY!
Two objects on Earth with the same weight must have the same:
A. Density
B. Acceleration
C. Mass
Answer:
C. Mass
Explanation:
If something has the same weight than it has the same mass
Answer: C
Explanation: the mass is the same as weight so if they have weight they also must have mass.
Solve for the length of the inclined plane if the angle equals 19.45 degrees.
Group of answer choices
12 ft
1.32 ft
14 ft
4 ft
The length of the inclined plane is approximately 12 ft
The situation forms a right angle triangle.
Right triangleRight triangle have one of its angle as 90 degrees.
Therefore,
The length of the inclined plane is the hypotenuse of the triangle. The length of the inclined plane can be found using trigonometric ratios.
height = 4 ft
angle(∅) = 19.45°
sin 19.45 = 4 / h
h = 4 / 0.33298412235
h = 12.0125847796
h = 12 ft
Therefore, the length of the inclined plane is approximately 12 ft
learn more on inclined plane:https://brainly.com/question/14163589?referrer=searchResults
The Moon (mass = 7.35 x 1022 kg) is 3.84 x 108 m from the Earth (mass = 5.98 x 1024 kg).
How much gravitational force do they exert on each other?
[?] x 10' ?N '
Hope you could understand.
If you have any query, feel free to ask.
Answer:
1.989 *10^20
Explanation:
works in acellus!
Ensuring that every contingency is planned for is an aspect of which of the following successful marketing plan requirements?
controllable
timely
fact based
flexible
Answer:
Fact based i think if not timely
Explanation:
Help please type it urgently
Answer:
16,926
Explanation:
Q = mCΔT
Q = 30.0g × 45.5 × (45.5 - 32.1)
Q = 30.0 × 45.5 × 13.4
Q = 16,926
IMPORTANT NOTE:
Q = Heat
m = mass of sample
C = specific heat
ΔT = Change in temperature
A car starts from rest and accelerates uniformly to a speed of 72km/hr over a distance of 500m. Find the acceleration of the car and time taken to attain this speed
Answer: a = 0.4 m/s^2
t = 50 s
Explanation:
Convert 72 km/hr to m/s by multiplying it by (1000 m / 1 km)(1 hr / 3600s).
Then, plug this into the formula: (v final)^2 = (v original)^2 + 2*a*d; v original = 0, so it becomes 20^2 = 2*a*500. This yields a = .4 m/s^2.
For the time: a = change in speed / t, which becomes .4 = 20 / t, which yields t = 50 s.
A mass of 10kg is a point a on a table is moved to a point B.if the line joining A and is horizantal what is the done on the object by the work done on the object by the gravitational force!?
!!!...explain your answer...!!!
Answer:
work done on the object by gravitational force = 0 joules
Explanation:
work = force × displacement
force = mass × acceleration
so,
work = mass × acceleration × displacement
we know that mass= 10 kg , gravitational acceleration= 9.8 [tex]m/s^2[/tex]
and displacement= 0 m since the object is not moving vertically.
so,
work = 10 × 9.8 × 0 = 0 joules
Answer:
I hope it's helpful for you.
What is the science principle that explains magnetic fields?
Answer:
Magnetism
Explanation:
Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. Magnetism is a natural force caused by moving electric charges. These movements can be tiny and occur within a substance known as magnets. Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. The Lorentz force is exerted on particles by a magnetic field. The force acting on an electrically charged particle in a magnetic field is proportional to the amount of the charge, particle velocity, and magnetic field intensity. The Lorentz force is distinguished by the fact that it forces particles to travel at right angles to their original motion. Some materials, such as iron, are permanent magnets, which means they can maintain a magnetic field indefinitely. These are the most frequent types of magnets found in daily life. Other materials, such as iron, cobalt, and nickel, can be given a temporary magnetic field by enclosing them in a bigger, more intense field, but these materials will soon lose their magnetism. According to HyperPhysics, magnetic fields are created by the movement of electric charges. Electrons all have angular momentum, which is a fundamental quantum mechanical feature known as "spin." Most electrons in atoms tend to form pairs in which one is "spin up" and the other is "spin down," or their angular momenta point in opposing directions. In this situation, the magnetic fields formed by the spins point in opposing directions, canceling each other out. However, certain atoms contain one or more unpaired electrons, which generate a modest magnetic field. The magnetic field's direction is determined by the direction of their spin. When a substantial number of unpaired electrons have their spins aligned in the same direction, they combine to form a magnetic field strong enough to be measured on a macroscopic scale. As the field propagates outward from the north pole and enters through the south pole, it generates a toroidal, or doughnut-shaped field. The Earth is a massive magnet. According to NASA, the planet's magnetic field is generated by flowing electric current within the molten metallic core. A compass points north because the little magnetic needle inside it is hung, allowing it to spin freely inside its shell and align with the Earth's magnetic field. Because it draws the north magnetic poles of compass needles, what we call the Magnetic North Pole is actually a south magnetic pole.
