An electric circuit can have no current when a switch is closed.

True

False

A spring on the produce scale at the farmers market has a spring constant of 5.2 N/m. A giant bag of apples is hung from the spring and the spring stretches 0.32m. What is the elastic potential energy stored in the spring?

The position-time graph of an object moving with a constant average velocity is always a straight line

What is the least possible initial kinetic energy in the oxygen atom could have and still excite the cesium atom?

Which of the following is a form of mechanical energy? O A. Thermal energy O B. Kinetic energy O C. Chemical energy O D. Nuclear energy

2. Mira is testing objects for her science experiment. She has a chart listing the mystery objects' densities, but no other information. She needs to calculate which object has a mass of 27 grams.

A ___ is awarded to the opposing team when that team violently or dangerously charges a opponent. (in soccer) A) Goalie kick B) Indirect kick C) Direct kick D) Throw in

Which has greater potential energy, a book on the top shelf of a bookcase or a book on the bottom shelf? Why?

Fusion occurs with atoms of elements less massive than a. iron. b. helium. c. calcium. d. uranium.

Which describes what happens when fuel is ignited in a heat engine? A. Chemical energy is converted into thermal energy B. Thermal energy is converted into solar energy. C. Solar energy is converted into chemical energy D.

What happens during the intake and compression strokes of a four stroke engine?