Answer:
Microchips
Explanation:
Right now we are in a chip shortage because we do not have enough silicon wafers to make the chips and not enough manufacturers to build them.
If 84 J of work are exerted to pull a wagon, how much force does it take to pull the wagon 7. 0 m? Round your answer to the nearest whole number. It takes N of force to pull the wagon.
Answer:
The force required to pull a wagon if 84 J of work are exerted to pull a wagon 7m is 12 Joules.
HOW TO CALCULATE WORK DONE:
Work done can be calculated by multiplying the force applied on an object by the distance traveled. That is;
Work done = Force × distance
Force = Work done ÷ distance
According to this question, the work done is 84J and the wagon was pulled to a distance of 7 metres. The force is calculated as follows:
Force = 84J ÷ 7m
Force = 12N.
Therefore, the force required to pull a wagon if 84 J of work are exerted to pull a wagon 7m is 12 Joules.
Who invented the first practical incandescent light bulb?.
Answer:
Edison
Explanation:
Among other notable inventions, Edison and his assistants developed the first practical incandescent lightbulb in 1879 and a forerunner of the movie camera and projector in the late 1880s.
2. An object of mass 20 kg is lifted to a 25 m building. How much potential energy is stored on the mass? (Take g= 10 m/s)
Explanation:
potential energy = mass × gravity force × height
=20 × 10 × 25
= 5000 joules
An object has an acceleration of 30.0 m/s/s. The mass of the object is tripled while the net force of the object is constant. What will the new acceleration be?
a. 30.0 m/s/s
b. 15.0 m/s/s
c. 10.0 m/s/s
d. 90.0 m/s/s
Known :
m1 = m
m2 = 3m1 = 3m
a1 = 30.0 m/s²
Solution :
Net force of the object is constant, so :
F1 = F2
m1 • a1 = m2 • a2
(m)(30.0 m/s²) = (3m)(a2)
a2 = 10 m/s²
Why does an object that is sliding across carpet slow down?.
Answer:
. Carpet has a rougher surface than the bare floor, so there are more areas for the object to have friction with the rougher surface and slow down.
Explanation:
An object that is sliding across carpet slow down because of friction acting between its rougher surface and the surface of the object.
What is friction?When two bodies come in touch with each other, friction, a sort of relative force, acts as a resistance. In other words, friction force opposes the relative motion of two bodies when they come into touch with one another.
When an object is sliding across carpet, it has to pass through a surface which is more rough compare to plane surface. So, frictional force will be greater in this case compare to plane surface. This frictional force resists the sliding of the object and the object slows down gradually.
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Alice kicks a 0. 25 kg soccer ball with 0. 5 N of force. What force does the ball exert on Alice’s foot as she kicks it? N.
The force exerted on Alice’s foot as she kicks the ball is 1.25 N.Force can be defined as the influence that can accelerate the object.
What is force?
Force can be defined as the influence that can accelerate the object. From Newton's Second Law of motion,
[tex]F = ma[/tex]
Where,
[tex]F[/tex] - force
[tex]m[/tex] - mass = 0. 25 kg
[tex]a[/tex] - acceleration = 5 N
Put the values in the formula,
[tex]F = 0.25 \times 5\\\\F = 1.25 \rm \ N[/tex]
Therefore, the force exerted on Alice’s foot as she kicks the ball is 1.25 N.
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Which of these events is an example of the Doppler shift?
Which of the following does NOT travel in a vacuum?
w) radio waves
x) gamma rays
y) magnetic waves
z) sound waves
Answer:
Z -- SOUND WAVES
Two objects are placed touching each other. Object A has a temperature of 1 T and Object B has a temperature of 2 T. What will be true after some time has passed
Both objects will have the same temperature, which is larger than T but smaller than 2*T
What is the thermodynamic equilibrium?A system in equilibrium if it is not able to experience spontaneous changes.
Here, we assume that our system is just the two objects with the given temperatures, and nothing else.
Thus, when we put them together, the only thing that will happen is a heat transfer (from the hotter object to the other one), until both of them have the same temperature (when both objects have the same temperature the heat flux stops).
Also, the object with temperature 2*T loses temperature, while the object with temperature T increases its temperature, then we can conclude that the final temperature of both objects will be in between these:
T < Tₓ < 2*T
To get the exact final temperature, we would need more information.
So what will be true after some time has passed?
The only thing that we know will happen is:
Both objects will have the same temperature, which is larger than T but smaller than 2*T
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Answer: Thermodynamics Unit Test
1. Heat will flow from Object B to Object A.
2. Heat flows due to a temperature difference between two objects.
3. 100 J/g
4. 9,887.5 J
5. Some heat is always lost to the environment.
6. Short Answer Question
Explanation:
100% correct
How to derive the formula for centripetal acceleration.
Because r is given, we can use the second expression in the equation ac=v2r;ac=rω2 a c = v 2 r ; a c = r ω 2 to calculate the centripetal acceleration. Solution.
joshua lifted a 100-newton (n) box by doing 120 joules (j) of work. how high did he lift the box? 0.83 meters 1.2 meters 20 meters 12,000 meters
He lifted the box as high as 1.2 m (B).
IntroductionHi ! In this question, I will help you. Work is the amount of force exerted to cause an object to move a certain distance from its starting point. In physics, the amount of work will be proportional to the increase in force and increase in displacement. Amount of work can be calculated by this equation :
[tex] \boxed{\sf{\bold{W = F \times s}}} [/tex]
With the following condition :
W = work (J)F = force (N)s = shift or displacement (m)Now, because in this question, the "s" is a displacement that proportion to the change of altitude of the objects. So, the "s" can be written as "∆h* (altitude change). The formula can also be changed to:
[tex] \boxed{\sf{\bold{W = F \times \Delta h}}} [/tex]
With the following condition :
W = work (J)F = force (N)[tex] \sf{\Delta h} [/tex] = change of altitude (m)Problem SolvingWe know that :
W = work = 120 JF = force = 100 NWhat was asked :
[tex] \sf{\Delta h} [/tex] = change of altitude = ... mStep by step :
[tex] \sf{W = F \times \Delta h} [/tex]
[tex] \sf{120 = 100 \times \Delta h} [/tex]
[tex] \sf{h = \frac{120}{100}} [/tex]
[tex] \boxed{\sf{h = 1.2 \: m}} [/tex]
Conclusion :He lifted the box as high as 1.2 m (B).
See More :Work that he had done to lift object https://brainly.com/question/26341717Converting work to potential energy https://brainly.com/question/26487284The height to which the box will be lift up by a force of 100N and work done of 120 Joules is 1.2 meters. Thus, the correct option is B.
What is Work done?The work done by a force of a particular magnitude is defined as the product of the force in the direction of the displacement of the object and the magnitude of this displacement. Work done can be calculated by multiplying Force and Distance in the direction of force as follows.
W = F × d
W = work (J),
F = force (N),
d = shift or displacement (m).
Here, d is a displacement that is proportional to the change of altitude of the objects. So, the d can be written as ∆h (altitude change or height change). The formula can also be written as:
W = f × Δh
where, W = work (J)
F = force (N)
Δh = change of altitude (m)
As given,
W = work = 120 J
F = force = 100 N
Δh = change of altitude
W = f × Δh
120 = 100 × Δh
Δh = 120/100
h = 1.2m
Therefore, the correct option is B.
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Does gravitational potential energy increase when getting closer to planet universal gravitation law.
Answer:
Yes
Explanation:
When the planet moves farther away, the speed and kinetic energy decrease, and the gravitational potential energy increases.
Two men pull on a 31-kg box with forces 8.3 N and 6.6 N in opposite directions.
Find the resultant acceleration of the box and the direction in which the box moves.
The resultant acceleration of the box is 0.055 m/s² in the direction of the greater force.
The given parameters:
Mass of the box, m = 31 kgTwo applied forces, = 8.3 N and 6.6 NResultant force on the boxThe resultant force on the box is calculated as follows;
[tex]F_{net} = F_1 - F_2\\\\F_{net} = 8.3 \ N - \ 6.6 \ N\\\\F_{net} = 1.7 \ N[/tex]
Resultant acceleration of the boxThe resultant acceleration of the box is calculated as follows;
[tex]F = ma\\\\a = \frac{F}{m} \\\\a = \frac{1.7}{31} \\\\a = 0.055 \ m/s^2[/tex]
Thus, the resultant acceleration of the box is 0.055 m/s² in the direction of the greater force.
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What is the density of a billiard ball that has a volume of 100 cm3 and a mass of 2.5 g?
Answer:
d= 0.025 g/ cm3
Explanation:
datos
d=?
v= 100cm3
m= 2.5g
formula
d= m /v
solución
d=2.5/100cm3
d= 0.025g/cm3
The gravitational force of attraction between two masses is F
1. If both masses are tripled, what happens to the force?
2. If both masses are tripled, what happens to the force?
3. If masses are not changed, but the distance of separation is reduced to 2/3 the original distance, what happens to the force
4. If both masses are doubled and the distance of the separation is tripled, show what happens to the force
5. if one of the masses is doubled, the other remains unchanged, and the distance of separation is quadrupled, show what happens to the force.
6. What would be the value of Earth's gravitational field strength if Earth's mass was double its actual value, but its radius was reduced to one-third of its original value?
Hi there!
We can use the equation for gravitational force:
[tex]F_g = \frac{Gm_1m_2}{r^2}[/tex]
Fg = force due to gravity (N)
m1, m2 = masses of objects (kg)
r = distance between the center of mass of the objects (m)
G = gravitational constant
1.
Using the equation:
[tex]F'_g = \frac{G(3m_1)(3m_2)}{r^2} = 9F_g[/tex]
The force would be 9 times larger.
2. (Repeat?)
3.
The square of distance is inversely related, so:
[tex]F'g= \frac{Gm_1m_2}{(\frac{2}{3}r)^2} = \frac{Gm_1m_2}{\frac{4}{9}r^2} = \frac{9}{4}F_g[/tex]
The force is 9/4ths times larger.
4.
Combining:
[tex]F'_g = \frac{G(2m_1)(2m_2)}{(3r)^2} = \frac{4Gm_1m_2}{9r^2} = \frac{4}{9}F_g[/tex]
The force is 9/4ths times larger.
5.
[tex]F'g = \frac{G(2m_1)m_2}{(4r)^2} = \frac{2Gm_1m_2}{16r^2} = \frac{1}{8}F_g[/tex]
The force is 1/8th the original.
6.
Equation for gravitational field:
[tex]g = \frac{Gm_e}{r_e^2}[/tex]
g = acceleration due to gravity (m/s²)
G = gravitational constant
me = mass of earth (kg)
re = radius of earth (m)
With the following transformations:
[tex]g' = \frac{G(2m_e)}{(\frac{1}{3}r)^2} = \frac{2Gm_e}{\frac{1}{9}r^2} = 18g[/tex]
The acceleration due to gravity is 18 times as large.
a soccer ball accelerates more than a bowling ball when thrown with the same force. which law of newton best supports this?
Answer:
Newtons second law of motion known as the law of acceleration
Explanation:
The second law explains that a greater mass requires a greater force
Complete the following
answer is down hera
A student is standing 8 m from a roaring truck engine that is measured at 20. The student moves 4 m closer to the engine. What is the measured sound intensity at the new distance?.
By knowing how intensity relates to distance, we will see that at 4 meters of the engine the intensity is 80.
How sound intensity relates to distance?
The sound spreads in a solid angle like all waves, so the intensity of the sound will decrease with the distance squared, this means that:
[tex]I = \frac{P}{4*pi*r^2}[/tex]
Where P is the sound power, we know that when the student is at 8m from the engine, the intensity measured is 20 (it does not tell the units) so we have:
[tex]20 = \frac{P}{4*3.14*(8m)^2} \\\\P = 20*4*3.14*(8m)^2 = 16,078.8 m^2[/tex]
Now, if you move 4 meters closer to the engine, your new position will be:
r = 4m
Then we have:
[tex]I = \frac{16,078.8 m^2}{4*3.14*(4m)^2} = 80[/tex]
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Answer:
80 is the answer! 100% CORRECT!
Explanation:
~Hope this helps! :)
when the production of a good generates negative externalities, ________.
A polar bear starts at the north pole. It travels 1 km south, then 1 km east, then 1 km north to return to its starting point. This trip takes 0. 5 h. What was the bear’s average velocity?.
The average velocity of the polar bear is 2 km/h.
What is average velocity?
The average velocity of an object is the ratio of the total displacement of the object to the time of motion of the object.
Average velocity of the polar bearThe average velocity of the polar bear is calculated as follows;
[tex]v = \frac{x_2 - x_1}{t} \\\\v = \frac{1 \ km}{0.5 \ h} \\\\v = 2 \ km/h[/tex]
Thus, the average velocity of the polar bear is 2 km/h.
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The sun's rays have a greater effect on land temperature than they have on water temperature. This can be explained partly by which of the following?
(1) Some energy from the sun is used to evaporate ocean water.
(2) Less energy is reflected by the water's surface than by the land's surface.
(3) Land materials have a higher specific heat than water has.
(4) Land Materials require more heat energy than water does to raise their temperature 1 degree Celsius.
Answer:
The answer is choice (3)
Explanation: Land materials do require more energy than water to raise their temperature by one degree, hence why water gets heated a lot easier than something like wood.
If earth’s axis were tilted by 45°, instead of its actual tilt, how would the seasons be different than they are currently?.
The eiffel tower is 300 meters tall. Disregarding air friction, at what velocity would an object be traveling when it reaches the ground if it were dropped from the top of the tower?.
Answer:
Hope it helps you :)
Explanation in the pic above.
The velocity of the object when it reaches the ground will be 76.68 m/s.
State the second equation of motion?
The second equation of motion is given by -
S = ut + 1/2 at²
Given is the Eiffel tower which is 300 meters tall.
Height of tower [S] = 300 meters
Acceleration of object [a] = + 9.8 m/s²
Initial velocity [u] = 0 m/s
Assume that its velocity when it reaches the ground is v m/s.
Effect of air friction = Negligible
Using the third equation of motion -
v² - u² = 2aS
v² = 2gS
v² = 2 x 9.8 x 300
v² = 5880
v = √5880
v = 76.68 m/s
Therefore, the velocity of the object when it reaches the ground will be 76.68 m/s.
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Do you think that it is possible to send a vocal transmission on a light wave?
Answer:
It is estimated that the light sources used as transmitters in the light-wave com munication system in Chicago have the ability to transmit more than 650 voice signals simultaneously.
Explanation:
the example of basic reserch
Answer:
A study looking at how alcohol consumption impacts the brain. A study to discover the components making up human DNA. A study accessing whether stress levels
Explanation:
For example, a scientist that tries to figure out how the body makes cholesterol, or what causes a particular disease, is performing basic scienc
An object has an acceleration of 30.0 m/s/s. The mass of the object is tripled while the net force of the object is constant. What will the new acceleration be?
Answer:
Inertia.
Explanation:
Goodluck!!
Answer:
the mass is 6 kilos grams
4. A 20 N force pushes a cart. That cart accelerates at a rate of 10 m/s/s. What will the acceleration of the
cart be if the FORCE is doubled?
a) 40 m/s/s
I
b) 20 m/s/s
c) 10 m/s/s
d) 5 m/s/s
The first color of the visible spectrum to disappear as one dives from the surface to the deep is ______.
The first color of the visible spectrum to disappear as one dive from the surface to the deep is red, as it has the largest wavelength among all the seven colors of the visible spectrum.
What is Wavelength?It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.
As given in the problem we have to find out the first color of the visible spectrum to disappear as one dives from the surface to the deep,
The longer the wavelength, the lower the frequency, resulting in lower energy that's why it gets absorbed first.
Thus, red is the first color of the visible spectrum to disappear as one dives from the surface to the deep.
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An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor
Answer:
60 ohms
Explanation:
[tex]v = ir \\ 120 = 2i \\ i = 120 \div 2 \\ i = 60ohms[/tex]
If it is helpful pls follow
The electric motor has a potential difference of 120 V and a current of 2 A, so the resistance in the circuit is 60 Ω.
What is Resistance?Electrical resistance, which measures how a substance or equipment reduces the flow of electric current through it, is a type of electrical quantity. Ohms (Ω) units have been used to express resistance. If we use the analogy of water flowing through pipes, as the pipe gets thinner, the resistance will increase and the water flow diminishes.
A circuit's opposition to the flow of electricity is assessed by its electrical resistance.
Electrons moving through a conductor, such as with a metal wire, create an electric current. The ions in the metal may be damaged by the speeding electrons. Resistance results from this, making it harder for the current that flows.
According to the ohm's law,
[tex]V=RI[/tex]
V = 120V
I = 2A
120 = R (2)
R = 60 Ω.
Therefore, the resistance in the circuit is 60 Ω.
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An aeroplane flies at 600km h on a bearing of 90 degrees at an altitude where the wind is 100 km h blowing in a solution direction. Determine the aeroplane resultant velocity by means of accurate scale drawing
Answer:
Explanation: You need to do this problem in respect to component velocities. Just use a vector and grab the magnitude using distance formula.
The components are Y=600, X=100
So the velocity vector is V> = sqrt(600^2+100^2) = 608.276253 in the direction (100, 600)
