Calculate the amount of energy transferred when a 40w light bulb is left on for 30 minutes.

Materials with the same R-value have the same ability to insulate. a. True b. False

When a pair of balanced forces acts on an object, the net force that results is a. equal to zero. b. greater in size than both forces combined. c. greater in size than one of the forces. d. equal in size to one of the forces.

What are the two factors that determine the strength of the force of friction between two sliding objects?

Which of the following answers describe how to calculate the acceleration of an object? A. Divide the change in the objects velocity by the time it takes to make that change. B. Divide the time the object travels by the distance it travels. C.

Hubble law how did astronomers gather the information needed to establish the law?

Which group of hominids lived at the same time as Homo sapiens? a. australopithecines c. Homo habilis b. Homo erectus d. Neandertals

Which statements describe properties of stars check all that apply

Like magnetic poles will repel each other, while opposite magnetic poles will attract each other true or false

Why are newtons second and third law important to everyday life?

Which of these factors will increase the speed of a sound wave in the air