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3 years ago

Newton’s 3rd law is for every action, there is an equal and opposite reaction True of false

Physics

1 answer:

den301095 [7]3 years ago

8 0

Answer:

true

Explanation:

newton's third law of motion states that if body A exerts a force on the body B, then body B will exert an equal and opposite force on body A,

this is called action reaction pair

hope this helps

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Help me pls its important

Shkiper50 [21]

I believe B, but don’t take my word

6 0

2 years ago

A concert loudspeaker suspended high off the ground emits 32.0 W of sound power. A small microphone with a 1.00 cm^2 area is 52.

lesya [120]

Answer:

Sound Intensity at microphone's position is $9.417\times 10^{- 4} W/m^{2}$

The amount of energy impinging on the microphone is $9.417\times 10^{- 8} W/m^{2}$

Solution:

As per the question:

Emitted Sound Power, $P_{E} = 32.0 W$

Area of the microphone, $A_{m} = 1.00 cm^{2} = 1.00\times 10^{- 4} m^{2}$

Distance of microphone from the speaker, d = 52.0 m

Now, the intensity of sound, $I_{s}$ at a distance away from the souce of sound follows law of inverse square and is given as:

$I_{s} = \frac{P_{E}}{Area} = \frac{P_{E}}{4\pi d^{2}}$

$I_{s} = \frac{32.0}{4\pi (52.0)^{2}} = 9.417\times 10^{- 4} W/m^{2}$

Now, the amount of sound energy impinging on the microphone is calculated as:

If $I_{s}$ be the Incident Energy/ $m^{2}/s$

Then

The amount of energy incident per 1.00 $cm^{2} = 1.00\times 10^{- 4} m^{2}$ is:

$I_{s}(1.00\times 10^{- 4}) = 9.417\times 10^{- 4}\times 1.00\times 10^{- 4} = 9.417\times 10^{- 8} J$

7 0

3 years ago

Light can travel through outer space from the Sun to the Earth. This shows that

PIT_PIT [208]

Answer:

c. that light can travel in a vacuum

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4 years ago

Is the measurement of the density of a substance as compared to water.

Ilya [14]

C. Specific gravity is the answer

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3 years ago

Why do quarterbacks throw the football with significant spin about its long axis?

Lera25 [3.4K]

(a) the principle of aerodynamic convergence

(b) the centripetal force

(d) Conservation of kinetic energy

(e) None of these

Conservation of angular momentum

Answer: Option C.

<u>Explanation:</u>

The law of conservation of angular momentum expresses that when no outer torque follows up on an article, no difference in precise force will happen.

The law of conservation of angular momentum expresses that the angular energy of a body that is the result of its snapshot of latency about the hub of revolution and its rakish speed about a similar pivot, can't change except if an outside torque follows up on the framework.

7 0

4 years ago