It's not physics it's physical science but i figured this was the closest subject to it. 1. the life cycle of a star begins with a cloud of gas and dust called a (1 point)

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.