How did the steel ball that flew out move compared to the steel ball that rolled toward the magnet?

The substances that are necessary for producing of certain hormones and that store and transport vitamins

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?

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above