The Burj Khalifa is the tallest building in the world with a height of 0.828 km. On his delivery on Christmas Eve, Santa Claus accidentally bumps into the Burj Khalifa and drops a toy from the very top of the building. What is the magnitude of the velocity (in m/s) of the toy 0.642 km from above the ground? Neglect air resistance. g=9.81m/s2

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?