A copper rod at 25°C is 1.5 m long. How long would it take a sound to move through the rod from one end to another? how would I do this?

The law of conservation of energy and describe the energy transformation that occur as you coast down a long hill on a bicycle and then apply the brakes to make the bike stop bottom

Water can decrease a substance's resistance to the flow of electricity. true or false

A 30kg crate rests on a horizontal floor, and a 70kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.

Does being creative in doing science mean that a scientist ahould make things up? why?

In the compound fe203 irons oxidization number is + 3 + Oxygen's oxidation number is

A pulse of red light and a pulse of blue light enter a glass block normal to its surface at the same time. after passing through the block, which pulse exits first?

An object is hanging by a string from the ceiling of an elevator. the elevator is moving upward with a constant speed. what is the magnitude of the tension in the string? an object is hanging by a string from the ceiling of an elevator.

If a running system has a total change in the heat of 437 joules, and it is running at a temperature of 321 K, what is the entropy?

A cello string 0.75 m long has a 220 hz fundamental frequency. find the wave speed along the vibrating string. answer in units of m/s.

A copper rod at 25°C is 1.5 m long. How long would it take a sound to move through the rod from one end to another? how would I do this?