Describe how you can determine the speed of sound using an echo?

1.5 m3 of water is mixed with 0.50 m3 of alcohol. The density of water is 1000 kg m-3 and the density of alcohol is 800 kg m-3. What is the density of the mixture with volume 2.0 m3?

Calculate the power provided by a 12 volt car battery with a rating of 350 amperes. A) 30 W B) 220 W C) 1200 W D) 4200 W

The solar power striking Earth every day averages 169 watts per square meter. The peak electrical power usage in New York City is 12,000 megawatts.

Calculating Final Velocity A roller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4.0 m/s2.

A property that describes how easily a substance undergoes chemical changes

What is the rate at which work is done in lifting a 35 kg object vertically at a constant speed of 5 m/s? 1 1700 W 2 340 W 3 180 W 4 7.0 W

The owner of a window treatment company wants to design Shades that will cover the windows of the house.

What direction of magnetic field lines inside my magnet

A solid nonconducting sphere of radius r has a charge q uniformly distributed throughout its volume. a gaussian surface of radius r with r < r is used to calculate the magnitude of the electric field e at a distance r from the center of the sphere.

How do the properties of salt compare with the properties of sodium and chlorine