Which of the following statements about using geothermal energy is not true?
a. geothermal energy can be used to fuel vehicles.
b. geothermal energy can be used as a source of electricity.
c. geothermal energy can be used as a source of heat.
d. geothermal energy is a renewable resource.

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block