The angular momentum of a system remains constant
A) when the total kinetic energy is constant.
B) when no net external force acts on the system.
C) when the linear momentum and the energy are constant.
D) when no torque acts on the system.
E) all the time since it is a conserved quantity.
Question 2
A uniform disk, a uniform hoop, and a uniform solid sphere are released at the same time at the top of an inclined ramp. They all roll without slipping. In what order do they reach the bottom of the ramp?
A) disk, hoop, sphere
B) hoop, sphere, disk
C) sphere, disk, hoop
D) sphere, hoop, disk
E) hoop, disk, sphere
Population predictions for 2000–2050, using three different total fertility rates (
Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division
The respiratory system
Energy flow and chemical cycling
Earth’s Climate System
Converting the universal gas constant