A car accelerates from rest for 5 seconds until it reaches a speed of 20 m/s. what is the car's acceleration in meters per second per second?

A proton travels at a speed of 2.0 ... *.10Ò meters/second. Its velocity is at right angles with a magnetic field of strength 5.5 ... *.10ȳ tesla. What is the magnitude of the magnetic force on the proton?

A 30.0 kg wheel, essentially a thin hoop with radius 0.620 m, is rotating at 202 rev/min. It must be brought to a stop in 26.0 s. (a) How much work must be done to stop it? (b) What is the required average power? Give absolute values for both parts.

If you are the driver or owner of a vehicle which is in a crash that is your fault, and you are not insured in compliance with the Financial Responsibility Law

Resistance and resistivity are related by a: 1. factor that is dependent on the length of the material 2. factor that is dependent on the area of the material 3. proportionality constant dependent on the identity of the material 4.

Which of the following is formed by constructive erosion? 1. delta 2. gully 3. rill 4. glacier

A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

A soccer ball is sitting in the middle of a soccer field during a game. When the referee blows his whistle, one of the players runs toward the ball and kicks it as hard as he can.

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?