Through which type of material does sound tend to travel at the highest
speed?

A. Solids
B. Liquids
C. Gases
D. Sound travels at the same speed in every material.

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground. what is his gravitational potential energy above the ground?