AP Physics 2 - Heat Transfer and Thermal Equilibrium

1

Which of the following best defines the zeroth law of thermodynamics in variable form?

2

How much energy does it take to raise of water by $50^{\text o}$ ?

$C_{H_2O}=4.17\frac{J}{g:^{\text o}C}$

3

Suppose that a copper bar long is raised from a temperature of $25^{o}C$ to $100^{o}C$ . If the coefficient of thermal expansion for copper is $1.7\cdot10^{-5}$ , what is the final length of the bar?

4

$3 \textup{ mol}$ of ethanol is at a temperature of $-10\ ^{\circ}C$ and $2\textup{ mol}$ of methanol is at a temperature of $30\ ^{\circ}C$ . If the two gases are in an isolated system together and allowed to transfer heat between each other, at which temperature will they reach thermal equilibrium?

5

The heat capacity for any given material is defined as the amount of heat that must be added to that material in order to increase its temperature by $1^{o}C$ . However, the heat capacity for any given material can be measured under different conditions, such as constant pressure or constant volume.

How would the heat capacity for a material at constant volume differ from the heat capacity for that same material at constant pressure?

6

of energy is applied to an aluminum rod of unknown mass. Its temperature goes from $20^{\circ}C$ to $45^{\circ}C$ . What is the mass of the rod?

$c_{aluminum}= 0.900 \frac{J}{g^{\circ}C}$

7

You have of water in a container above a burner. If of energy is put into the container (assume all of it goes into the water), and the specific heat of water is $4.17 \frac{J}{g^{\text o}C}$ , how much did the water's temperature rise?