The 8.00-cm long second hand on a watch rotates smoothly.

What is its angular velocity?

What is the speed of the tip of the hand?

explain how a maglev train provides evidence that magnetic fields can apply forces between objects that do not touch.

Winds are named based on different factors. How are winds usually named? A. Winds are usually named based on their strength. B. Winds are usually named based on their altitude. C.

You buy a 75-W lightbulb in Europe, where electricity is delivered to homes at 240 V. Part A If you use the lightbulb in the United States at 120 V (assume its resistance does not change), how bright will it be relative to 75-W 120-V bulbs

Calculate the density of a substance in pen - nyweights per peck that has a volume of 0.333 hogsheads and a mass of 49.62 kg. 1 pennyweight = 1.55 grams 1 hogshead = 238.5 liters 1 peck = 9.091 liters. Answer in units of pw/pk ... ?

At a divergent plate boundary such as a mid ocean ridge, you should expect to find

A flash of white light containing all the colors of the visible spectrum in air shines straight down on the surface of a pool.

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.