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 feature indicates that mars resides in the inner region of the solar system

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?