The most distant stars for which we can measure distances with stellar parallax are of light-years away. (Note: Assume the parallax measurements are those possible with the GAIA spacecraft.)

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.