Aflashlight uses four batteries to power it. which type of current flows inside the flashlight?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.