Name and describe each star phase. red supergiant black hole white dwarf planetary nebula a low-mass star that has shed its outer layers attracts all matter and energy that come nearby shells that are cast away from a low-mass star a heavy star that expands and gives off large amounts of light

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?