Edward with it gathering physical evidence at the scene of a crime. He finds a fingerprint pressed into the wax of the candle. What type of fingerprint is this

What happens to light waves from a star as the star moves away from earth?

How have the competing explanations' experiments on atoms affected the development of the atomic model?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?