A metallic sphere has a charge of +4.0 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 8.2 x 109 electrons are transferred. What are the charges of the sphere and the rod now? [Sphere = 2.688 nC and Rod=-4.688 nC]

What is magnetic flux? explain faraday's law of induction.

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)