an engine manufacturer makes the following claims. An engine's heat input per second is 9.0kj at 435k. The heat output per second is 4kj at 285kj. Do you believe this claims

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.

Explain vector addition, triangle method and parallelogram method

Astate of matter all that has define volume and can flow is a(n)