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Physics

1 answer:

DochEvi [55]2 years ago

6 0

Answer:

if its so easy why dont u do it .

Explanation:

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What is the kinetic energy of a 5-kg object moving at 7 m/s?

Sunny_sXe [5.5K]

To answer this question, we would need the formula for the kinetic energy which is Kinetic Energy = ½ x m x v^2

Where the following means: m is the mass of the object and v is the velocity

So At 7 m/s: Kinetic Energy = ½ x 5 x 7^2 = 122.5 J is the answer

6 0

3 years ago

The device shows the relative humidity at 22 degrees celsius. What's the water vapor density if the maximum water vapor in air a

sweet [91]

Answer:

11.6 g/m³

Explanation:

The complete question is,

The device shows the relative humidity at 22 degrees celsius. What's the water vapor density if the maximum water vapor in air at this temperature is 20 gram/cubic meter? a device showing that at 22 degrees celsius the relative humidity is 58%.

Solution:

saturation of water in air is showed by the relative humidity. As it is 58% and not 100%. Lets scale density that we have, if humidity is 100%.

density is 20 gram/m³ when the humidity is 100%

When humidity is 58%

0.58 x 20 = 11.6 g/m³

Therefore, density is 11.6g/m³

6 0

2 years ago

A body starts with a velocity of 20 m/s, accelerates uniformly for a time t, moves with constant velocity for the same time, and

Bezzdna [24]

Answer:

t=0.14s