Calculate the work required to move a planet’s satellite of mass 571 kg from a circular orbit of radius 2r to one of radius 3r, where 8.8 × 106 m is the radius of the planet. the mass of the planet is 7.76 × 1024 kg. answer in units of j]

What effects result when there is an impact between earth and an asteroid? check all that apply. a. massive flooding. b. extinction of many life forms. c.major earthquakes change in average global temperature. d. giant dust cloud

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.