Which of the following provides the best evidence in support of the big bang theory?
O A. The way a balloon expands
B. The confirmation of special relativity
C. The uniformity of cosmic background radiation
D. The separation of energy levels in an atom

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

What is the increase in density of a medium due to wave travel?