Aboulder on top of a cliff has a potential energy of 12400j. how high above is the boulder?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato