Which of the following is mostly to be found in crystalline form?

Concrete

Glass

Plastics

Quartz

A car traveling 51.0 km/h is 27.7 m from a barrier when the driver slams on the brakes. the car hits the barrier 3.48 s later. (a) what is the car's constant deceleration magnitude before impact? (b) how fast is the car traveling at impact?

What is the series equivalent of two 1000 W resistors in series?

Define gravitational field

Which type of force will an object move towards? A) weakest B) strongest C) net D) balanced

why should you only have one variable in an experiment?

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?