You do 1200J of work with gears. If the gears do 1000J of work, what is the efficiency of the gears?

Which of. the following was not a major advantage of Copernicus's Sun-centered model over the Ptolemaic model? (a) It made signifi. Cllntly better predictions of planetary positions in our sky.

If you make multiple measurements of your height, you are likely to find that the results vary by nearly half an inch in either direction due to measurement error and actual variations in height.

What is earth revolution estimated time and direction What is moon's revolution estimated time and direction

A ball is thrown straight up at an initial speed of 9.8m/s and, on returning to your hand, hits it moving downward at the same speed. If the whole trip took 2.0s, determine the ball's (a) average acceleration and (b) average velocity.

a bungee jumper of mass 50 kg jumps from a bridge using a 10 m long cord which can be approximated as a spring with spring constant 100 n/m. how far is he going to go below the bridge is he going to go before momentarily stopping

What happens to the density as one progresses through the layers of the earth from the lithosphere toward the inner core

What is tiny holes on the surface of a plant?

How is aperture measured? What do the measurements mean?

The mass of the Sun is 1.99 * 1030 kg. Jupiter is 7.79 * 108 km away from the Sun and has a mass of 1.90 * 1027 kg. The gravitational force between the Sun and Jupiter to three significant figures is * 1023 N.

You measure the magnetic field of a long, current-carrying wire to be B is equal to start fraction 50 times mu naught over pi end fraction at a distance of r = 7.5 cm. How much current is running through the wire?