Which of the following components of an electrical circuit is a source of voltage?

A. a switch

B. a battery

C. a resistor

D. a light bulb

A light bulb with a resistance of 2.9 ohms is operated using a 1.5 volt battery. At what rate is electrical energy transformed in the ligthbulb? 1) 0.52W 2) 0.78W 3) 4.4W 4) 6.5W

Which one is an accurate description of the process of erosion? A. breaking rocks into smaller pieces B. forming rocks and depositing them in new places C. moving bits of rock and soil across the earth's surface by water, wind, or glaciers D.

The slope of a velocity time graph over any interval of time gives the during that interval

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?

Explain why a running cheetah has kinetic energy.

How much heat is absorbed by a 61g iron skillet when its temperature rises from 5oC to 29oC?

Explain the relationship between motion and frame of reference.

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing discussion between the two students about what the spectrum of moonlight would look like.

When performing a battery load test, what should the load be set to?

If you push on a wall of a building what will happen