A person hears an echo from the top of a tower, 2.2 seconds after the sound is produced how far away is the tower from the person? Speed of the sound in the air is 332m/s

Raising 100 grams of water from 40 to 60 °C (the specific heat capacity of water is 1 cal g ) requires the addition of

List and describe two ways currents affect life on earth

When electricians use wiring for houses they use both copper and rubber. Which do you think is used as a conductor?

At approximately what frequency do most people perceive the least intense sounds? enter your answer numerically in hertz to two significant figures.

Two vectors are at 90 degrees to each other having magnitudes of 3N and 4N. The resultant is.

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

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.