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2 years ago

The temperature of a balloon is lowered with liquid nitrogen. The balloon appears to deflate because the

Physics

1 answer:

NARA [144]2 years ago

6 0

The air and balloon themselves contract (shrink) because of contact with the very cold liquid N

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Which officeholders are elected by the electoral college

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Answer:Electoral Vote

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2 years ago

A man pushes a stalled car with a force of 100 N. If the acceleration of the car is 0.75 m/s 2 , what is the mass of the car?

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2 years ago

Which term describes the wave phenomenon in the image?

VashaNatasha [74]

Answer:

wave changes its path from its initial direction so this phenomenon is known as Refraction of wave

Explanation:

When wave travels from one medium to other medium the due to change in the speed of the wave propagation it deviates from its initial path.

The deviation of the wave from its initial path is known as refraction of wave

Here we can see that wave incident on medium 1 with some angle with the boundary

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2 years ago

Read 2 more answers

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid

Katena32 [7]

Answer:

666000000000 J

391764.71 N

Explanation:

u = Initial velocity

v = Final velocity

s = Displacement

Change in energy

$\Delta KE=\frac{1}{2}m(v^2-u^2)\\\Rightarrow \Delta KE=\frac{1}{2}3.7\times 10^4(4500^2-7500^2)\\\Rightarrow \Delta KE=-666000000000\ J$

Work done be the force is 666000000000 J

$W=F\times s\\\Rightarrow F=\frac{W}{s}\\\Rightarrow F=\frac{-666000000000}{1.7\times 10^6}\\\Rightarrow F=-391764.71\ N$

The magnitude of force is 391764.71 N

3 0

3 years ago