In an experiment, which variable do you change?

A) Dependent

B) Stable

C) Graphing

D) Independent

The unit for measuring electric power is the a. ampere. b. ohm. c. volt. d. watt.

Why scientists must infer what Earths interior looks like

Which of the following atoms do not usually form bonds

Light travels at a constant speed of about 300,000 km/s. This speed is referred to as the speed of light. A light year is the distance that light travels in one year. One light year is equal to 9.46 trillion kilometers.

Which statement best describes a transverse wave? A. Particles of the wave medium move in the opposite direction of the wave. B. Particles of the wave medium move perpendicular to the wave. C. Particles of the wave medium move parallel to the wave.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.

The amplitude of a sound is the Group of answer choices frequency of the sound. magnitude of displacement of a sound pressure wave. psychological aspect of sound related to timbre. amount of sound energy falling on a unit area.

Air at 38°C and 97% relative humidity is to be cooled to 18°C and fed into a plant area at a rate of 510 m/min. a. Calculate the rate (kg/min) at which water condenses. b.