Brass is an alloy made from copper and zinc. A 590 g brass candlestick has an initial temperature of 98.0°C. If 21,100 J of energy is removed from the candlestick to lower its temperature to 6.8°C, what is the specific heat of brass?
A 0.526J/g °C
B 4.012 J/gºC
C 52.59 J/g°C
D 0.392 J/gºC

Idon’t quite understand this problem

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above