Find the orbital speed v of a satellite in a circular orbit of radius r around a planet of mass m. express the orbital speed in terms of g, m, and r.

Until the late 1800s, which of the following sources was used to heat most homes? fossil fuels o electricity biomass solar energy

Many new headphones on the market are called "noise reducing" because they take sound waves that come in from the outside and add a sound wave to it that is exactly opposite (out of phase) to it, these add together to make no noise.

A light bulb with a resistance of 2.9 ohms is operated using a 1.5 volt battery. At what rate is electrical energy transformed in the ligthbulb? 1) 0.52W 2) 0.78W 3) 4.4W 4) 6.5W

According to Newton's third law, what is likely to happen if you attempt to jump horizontally from a small boat to the dock before the boat is securely tied up? A. The boat will sink from being pushed down. B.

4. The place on a magnet where the magnet exerts the strongest magnetic force is the magnetic A. pole. B. force. C. domain.

How to find acceleration

Which of the following involves the emission of a particle that has the same mass of an electron with a positive charge. a. alpha decay c. positron emission b. beta decay d. nuclear forces

Which of the following is an example of distance

What outside force slows down a parachute?

A cable applies a vertical force to a crate with a mass of 70.0 kg. It first lifts the crate to a height of 12.0 m above the floor, and then lowers it back to the floor. What is the total work done by the force?