A cart maintains a constant velocity of 100 m/s for 10 seconds. During this interval its acceleration is

When a magnet is moved to and fro in a wire coil, current is induced. If the coil has twice as many loops, the current induced is  

The source of all magnetism is  

The voltage across the input terminals of a transformer is 120 V. The primary has 25 loops and the secondary has 50 loops. The voltage the transformer delivers is (set up the ratio equation to solve)

It is said that electric charge is conserved, which means that electric charge  

According to Kepler, the line from the Sun to any planet sweeps out equal areas of space  

If the color spectrum ranges from red to violet, then it ranges from  

Escape speed from Earth is  

Magenta light is a mixture of  

Electric potential, measured in volts, is the ratio of electric energy to the amount of electric