Trevor lifts a 10kg box to the top of a cliff which is 20m high, in half an hour, then drops the box over the cliff. How much power did he use to lift the box?

A satellite of mass ms travels in a circular orbit of radius a around a planet of mass mp? ms. Part A Derive expressions for the orbital speed of a satellite.

What is the closed system equation?

2. A construction consultant may be responsible for

All planets revolve around the sun counterclockwise, and most also rotate on their axis counterclockwise true or false

What are some important words in the subject of science that have to do with matter.

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?

If the mass of an object is 84g and the volume is 12cm3 what is the density

Describe one example of competiton of tropical dry forest