The potential energy U of an object of mass m that is separated by a distance R from an object of mass M is given by U = - GMm/R. What is the kinetic energy K of the satellite? Express your answer in terms of the potential energy.

Which two factors determine the density of seawater? A. Salinity and temperature B. Temperature and gravity from the sun C. Centrifugal force and temperature D. Gravity from the sun and the moon

Mutt and Jeff are running along a path each pushing a cart loaded with rocks. If Mutt's wagon has a mass two times greater than Jeff's and they want to stay together, arriving at their destination at the same time, what must happen?

Electrical wires sometimes have a plastic coating wrapped around them. How does this make the wires safer to handle

The gravity model predicts that the optimal location of a service is

How much force is required to accelerate a 5kg mass pushed by a 10n force

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.

A ___ is awarded to the opposing team when that team violently or dangerously charges a opponent. (in soccer) A) Goalie kick B) Indirect kick C) Direct kick D) Throw in