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?

Watching television, with theremote control in your hand, which of the following exerts the greatest gravitational force on you? A) The couch you are sitting on B) The TV actors tne room C) The moon D) The remote control in your hand

What describes the way light is reflected from the surface of a mineral?

Choose the correct description of the interior structure of jupiter and why it is layered in this way.

What is the term used to describes altering the pixel colors where the edges of the object and the background meet, so that the object appears to merge with the background?

How is hydrogen similar to the elements below it? How is it different from them?

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {/rm N}.

What are the components of earths life support system