What can you assume has happened if an electron moves to a higher energy level? A) the atom has become more stable

B) the electron has lost energy

C) the electron has gain energy

D) the atom has lost an electron

What does rotation mean?

The emission of light from a radioisotope occurs during what decay.

Two resistors have resistances R (smaller) and R (larger), where R (smaller) < R (larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 2.00 A.

The calorimeter is made up of copper but not of glass? Why?

A baseball rolling along the floor has potential energy kinetic energy thermal energy conservation of energy

Which of the following simple machines includes a wedge? A. axe B. file C. bolt D. ramp

What are the units of speed or velocity

List the colors of visible light in order of decreasing frequency physics

You can identify a pure substance if you know it's?

A rod of mass M and length L can rotate about a hinge at its left end and is initially at rest. A putty ball of mass m, moving with speed V, strikes the rod at angle θ from the normal and sticks to the rod after the collision.