Can the total amount of energy in a system transfer between potential and kinetic?

What is the biggest planet in our galaxy

Burning involves a chemical change. true or false

A train travels 97 kilometers in 4 hours, and then 63 kilometers in 1 hours. What is its average speed? Answer? units?

A foot ball with a mass of 0.42kg. the aveage acceleration of the football was 14.8 m/s^2. how much force did the kicker supply to the football a. 6.22m/s^2 b. 622 N c. 35.24 m/s^2 d. 34.24 N

Qual unidade de midia usado pelo si no tempo

Show that the Newton has the units of mass times acceleration.

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s

Electricity problem (coulomb's law)

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

In order for convection to occur, you must have