Machines make work easier by

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

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

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?