Which situation is NOT the result of an unbalanced force acting on an object? A. an object speeds up B. an object maintains speed C. an object changes direction

General relativity, rather than special relativity, must be used for which kind of frame of reference A. Frame of reference moving backward at constant velocity B. Frame of reference that is accelerating C. A frame of reference that is at rest D.

Involves the transformation of chemical energy directly into light energy?

Physical science is the study of A) Matter. B) Energy. C) Both matter and energy. D) None of the above.

Producing a current by moving a wire through a magnetic field is called induction.

Which composition of water moves within a deep-water current?

If an ant were scaled up to the size of an elephant, the ant would be

A 4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the ground?

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true? The mechanical waves reach Earth, while the electromagnetic waves do not.

A 3-kg mass is in free fall. What is the velocity of the mass after 7 seconds?

How does the role of blood protect the body