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Lesechka [4]
3 years ago
5

A planet rotates on its axis once every 24 hours. It’s radius is 5378. What is the linear speed of a rock on the planets equator

due only to the planted rotation?
Physics
1 answer:
Alla [95]3 years ago
3 0

If the planet's radius is 5378, then the distance around its equator is

(2π) x (5378) =  33,790.97 .

Any point on the equator takes 24 hours to go all the way around once, so its linear speed is

(33,790.97) / (24)

<em>Speed =   1,407.96  units/hour</em>

Speed = 23.466 units/minute

Speed =   0.391 unit/second

The 'unit' is the same as whatever unit the '5378' has.

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3 years ago
An airplane flies horizontally at constant speed in a straight­line direction. Its state of motion is unchanging. In other words
Alex_Xolod [135]

Answer:

sum of all forces on the air plane must be ZERO

So both forces must be of same magnitude

Explanation:

As we know that airplane is moving with uniform speed is horizontal plane is a straight line

so the motion of the air plane is uniform without any acceleration

So we will have

a = 0

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7 0
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Compute the power output (watts) during one minute of treadmill exercise, given the following: Treadmill grade-10% Horizontal sp
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Answer:

c. 981 watts

P=981\ W

Explanation:

Given:

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<u>Now the power can be given by:</u>

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