A force of 400.0N is exerted on a 1,250N car while moving it at a distance of 3.0m. How much work was done on the car?

If the speed of a particle triples ,by what factor does its kinetic energy increase?

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block