A higher temperature, stiffer materials, and less dense materials increase the speed of sound.
Answer:
A. The iron-nickel alloy melts due to hot temperatures.
Explanation:
Answer:
<h2>

</h2>
Explanation:
<u>Rule</u><u>:</u>
<h3>
Speed= Distance/ Time</h3>
<em>Hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>!</em><em> </em>
<span>Air is more compressible than water. Further, volume elasticity is reciprocal of compressibility. Therefore, water is more elastic than air.</span>
We can solve the problem by using Ohm's law.
The resistance of the person, with dry skin, is

. In order to be felt, the current must be at least

Ohm's law gives us the relationship between current and voltage:

where
I is the current
R the resistance
V the voltage
Using the data of the problem, we find that the minimum voltage needed is