A train rolls past a stationary observer. To him, the train is moving at a speed of 32 m/s west, and a woman on the train is moving 30.8 m/s west. How long does it take the woman to move 8 m relative to the train?

Why does air at 75% relative humidity and 30°c make your skin feel stickier than air at 75% relative humidity at 10°c

Which statement is true regarding copper's ability to conduct electricity? Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.

A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 4.25 times around the track.

Place the electromagnetic spectrum in order from greatest frequency to lowest

Carter pushes a bag full of basketball jerseys across the gym floor. The he pushes with a constant force of 21 newtons. If he pushes the bag 9 meters in 3 seconds, how much power does he use? (Hint: 1 watt = 1.)

Whats the core of electromagnet made of?

Ultraviolet light emits a total of 2.5 * 10^-17 J of light at a wavelength of 9.8 * 10^-7 m. How many photons does this correspond to?

3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposite surface at an angle of 900 to the normal. Calculate the i. angle of incidence. ii.

What would happen to the stratosphere if humans were to increase the amount of ozone within it?

The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous noise level that appears over a wide spectrum when viewed in the frequency domain. a. Trueb. False