Physics Practice: Calorimetry (Mock Test 4 - Expert Level)
1. Expert Analysis: An electric heater of power $500 \text{ W}$ is used to raise the temperature of $2 \text{ kg}$ of a liquid from $25^{\circ}\text{C}$ to $75^{\circ}\text{C}$ in $400 \text{ seconds}$. The specific heat capacity of the liquid is:
2. Clinical Logic: Why does the surroundings become pleasantly warm during a snowfall, but very cold when the snow starts melting?
3. Data-Based: $10 \text{ g}$ of ice at $0^{\circ}\text{C}$ absorbs $5460 \text{ J}$ of heat to eventually become water at $50^{\circ}\text{C}$. What is the specific latent heat of fusion of ice based on this data? (Take $c_w = 4.2 \text{ J/g}^{\circ}\text{C}$)
4. Experimental Setup: Why are the base of cooking pans often made of thick copper or aluminum?
5. Which of the following statements about "Specific Heat Capacity" is INCORRECT?
6. A $200 \text{ g}$ block of metal at $100^{\circ}\text{C}$ is placed in $100 \text{ g}$ of water at $20^{\circ}\text{C}$. If the final temperature is $30^{\circ}\text{C}$, the specific heat of the metal is:
7. The specific latent heat of vaporization of a substance is always ________ its specific latent heat of fusion.
8. When a substance melts at its melting point, there is no change in temperature. What happens to the heat energy supplied?
9. If a substance has infinite heat capacity, its temperature will:
10. Expert Logic: Soft drinks are cooled more effectively by $10 \text{ g}$ of ice at $0^{\circ}\text{C}$ than by $10 \text{ g}$ of water at $0^{\circ}\text{C}$ because:
