Which of the following are true (choose all that apply)? sound can travel through a vacuum. -sound can travel through water. light can travel through a vacuum sound can travel through air. light can travel through air light can travel through water

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.