The total of all forces acting on a body is the

Archimedes supposedly was asked to determine whether a crown made for the king consisted of puregold. According to legend, he solved this problem by weighing the crown first in air and then in water. Suppose the scale read 7.

What causes current to alternate in ac circuit

The wavelength of a wave in some medium is reduced, what happens to the period? The velocity? The amplitude? The frequency?

Falculate the speed of a wave with frequency of 10KHz and wave length of 2m

How long (in ns) does it take light to travel 1.30 m in vacuum?

I'm a bit confused A basketball is thrown upwards. The height f (t), in feet, of the basketball at time t, in seconds, is given by the following function: f (t) =

A rod made up of a single element is used to heat water using electricity. To which group does this element probably belong to?

16. A block is sitting on a ramp tilted from horizontal. The block is just about to slide. T he angle of the ramp relative to horizontal is 14 degrees. What is the coefficient of friction between the block and the ramp? a. 0.25 b. 0.97 c. 0.5 d. 0.

Assume that a friend hands you a heavy book to hold as he turns the combination lock on his locker. Which of you does more work?

A tube, open at only one end, is cut into two shorter (nonequal) lengths. The piece that is open at both ends has a fundamental frequency of 422 Hz, while the piece open only at one end has a fundamental frequency of 666 Hz.