bena thinks that dissolving more salt in water causes the mixture's freezing temperature to change. which the best type of scientific investigation for bena to use to study this.

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

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?

Which wave is the result of amplification and produces a louder sound