Author Question: If the total translational kinetic energy of the molecules of oxygen in a container is 15 J at room ... (Read 80 times)

BRWH · **on:** Jul 28, 2018

If the total translational kinetic energy of the molecules of oxygen in a container is 15 J at room temperature, what is the total rotational kinetic energy of these molecules?
a. 5 J
b. 10 J
c. 20 J
d. 25 J
e. 0 J

Question 2

In braking an automobile, the friction between the brake drums and brake shoes converts the car's kinetic energy into heat. If a 1500-kg automobile traveling at 30 m/s brakes to a halt, how much does the temperature rise in each of the four 8.0-kg brake drums? (The specific heat of each iron brake drum is 448 J/kg/C).