Amachine has a mechanical advantage of 4.5. what force is put out by the machine if the force applied to the machine is 800 n?
a-0.006 n
b-180 n
c-805 n
d-3600 n

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.