Question

question 2 of 20
which change would increase the amount of thermal energy in an object?
a. decreasing its mass
b. increasing its temperature
c. increasing its velocity
d. decreasing its density

Explanation:

Thermal energy of an object is related to its mass, specific - heat capacity, and temperature. The formula for thermal energy is $Q = mc\Delta T$. An increase in temperature ($T$) leads to an increase in thermal energy ($Q$), assuming mass ($m$) and specific - heat capacity ($c$) remain constant. Decreasing mass would decrease thermal energy. Increasing velocity affects kinetic energy, not thermal energy directly. Decreasing density doesn't directly increase thermal energy.

Answer:

B. Increasing its temperature