Explanation: Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Air and hydrogen have nearly the same elastic properties, but the density of hydrogen is less than that of air. Sound thus travels faster (about 4 times as fast) in hydrogen than in air.

6 0

3 years ago

What is the S.I. unit of drift velocity and electron mobility?

Degger [83]

We use m/s for the velocity, and m2/(V·s) for the mobility.

7 0

3 years ago

A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building.how much potential energy doed the person have at t

faust18 [17]

So first, we multiply mass by gravity by height, which is 60 * 9.8 * 74.8 = 43747.2

So the answer is: 43747.2

Hope this helped! c:

5 0

3 years ago