The drawing below illustrates an interaction between different
substances. What statement best explains what the drawing illustrates?

A.
B.
C.
D.

Which changes of state do the labels represent? a: b: c:

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.