3 years ago

A sound wave is called a longitudinal wave? why?Give reason

1 answer:

3 0

Answer:

A sound wave is called a longitudinal wave because compressions and rarefactions in the air produce it. The air particles vibrate parallel to the direction of propagation.

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Which of the examples below is an example of convection?

nasty-shy [4]

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2 years ago

Work is done on a locked door that remains closed while you try to pull it open. True False.

dsp73

Answer:False

Explanation:

Work is being done on a body when it causes displacement of body on the application of force

$Work\ done=Force\times displacement$

When we pull the door by a force it causes zero displacements of the door. So we can say that work done on it is zero.

Thus the above-given statement is false

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3 years ago

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A 1,200 kg dragster, starting from rest, reaches a maximum velocity of 140m/s in 5 seconds. At the 5 second mark, the dragster d

SSSSS [86.1K]

Answer:

Drag or air resistance

Explanation:

The force of friction caused by a moving fluid is called drag. When that fluid is air, it's also known as air resistance.

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3 years ago

Please help me!!!!!!!!!!Which is true about the actual mechanical advantage of a machine?

Hoochie [10]

B it increases with greater friction

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3 years ago

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