Author Question: If 150 kcal of thermal energy raises the temperature of 2.0 kg of a material by 400 F, what is the ... (Read 47 times)

rosent76 · **on:** Jul 29, 2018

If 150 kcal of thermal energy raises the temperature of 2.0 kg of a material by 400 F, what is the specific heat capacity of the material?

A) 1.35 kcal/kg C
B) 0.75 kcal/kg C
C) 0.34 kcal/kg C
D) 0.19 kcal/kg C

Question 2

When the current through a resistor is increased by a factor of 4, the power dissipated by the resistor

A) decreases by a factor of 4.
B) decreases by a factor of 16.
C) increases by a factor of 16.
D) increases by a factor of 4.
E) increases by a factor of 2.