A wave set out from a source is reflected back to the sources in 1.0 x 10 ^ -3 s. If the velocity of the wave is 3.0 x 10 ms^ -1, calculate the distance of the reflecting surface from the source.

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

What is the relationship between the direction of motion of the balloon and the wind currents