How much heat (in kj) will be absorbed by a 50. 3 g piece of aluminum (specific heat = 0. 930 j/g･°c) as it changes temperature from 23. 0°c to 67. 0°c?.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

The heliocentric and the geocentric models of the solar system included these central principles