A 2130-kg space station orbits earth at an altitude of 549000 m. find the magnitude of the force with which the space station attracts earth. the mass and mean radius of earth are 5.98 * 1024 kg and 6370000 m, respectively.

When two notes are played simultaneously creating a discordant sound it is called

A 50.6 g ball of copper has a net charge of 1.6 µc. what fraction of the copper's electrons have been removed? (each copper atom has 29 protons, and copper has an atomic mass of 63.5.

What is the unit of measurement for power? A. m/s2 B. watts C. joules D. newtons

When generators use mechanical energy, what type of energy is produced? kinetic energy electrical energy potential energy magnetic energy

Speed is a vector quantity

Based on how the book describes a heat pump in sec 16.3 how does a heat pump prove law of conservation of energy

When a gas in a container is squeezed to half its volume, its density?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?