Answer:
The magnetic energy density is 
Explanation:
From the question we are told that
The earths magnetic field is 
Now

=> 
So


Generally the magnetic energy density is mathematically represented as

Here
is the permeability of free space with a constant value

substituting values for equation above


Since Jason plays a lot of sports <em>(D)</em>, there's a good chance that he has developed a greater-than-average lung capacity. This is a good thing.
volume of milk is given as

we will convert it into mL unit

mass of the milk m = 2kg
m = 2000 g
now for the density we can use



<em>so the density is 0.264 g/mL for above sample</em>
Answer:
absorbs heat and its kinetic energy increases.
Explanation:
As we know that heat is defined as the change in the temperature as there is increase in the temperature change then the heat will increase or decrease with respect to increase or decrease in temperature change.
In the given, question temperature is changing from 20° to 50° which means there is increase in the temperature which results in the absorption of heat. And increase temperature will increase the average speed of the molecules which results in increase in kinetic energy.
Sound and water waves are mechanical waves, unlike light waves.