Answer : The temperature when the water and pan reach thermal equilibrium short time later is, 
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of aluminium = 
= specific heat of water = 
= mass of aluminum = 0.500 kg = 500 g
= mass of water = 0.250 kg = 250 g
= final temperature of mixture = ?
= initial temperature of aluminum = 
= initial temperature of water = 
Now put all the given values in the above formula, we get:
Therefore, the temperature when the water and pan reach thermal equilibrium short time later is,
If the separation between the charges is increased then the magnitude of the force will increase in fact how the distance is being used in that formula.
Answer:
A
Explanation:
As an object gets hotter the faster the molecules go
If it goes 1250km every hour, times 4.2 hours
1250*4.2
5250 km
