You and a friend encounter a sphere with 1.5 C of charge. You are 2 m from the sphere and your friend is behind you, 2.5 m from the sphere. What is the magnitude of the potential difference between you and your friend in V

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

Why do atoms emit energy of only specific wavelengths