Any one have a clue on this one? really need on this

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

The amount of potential energy possessed by an elevated object is equal to what?

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47