The atomic mass of an atom can be found by
a. adding the number of protons and number of neutrons in the atom.
b. adding the number of protons and number of electrons in the atom.
c. adding the number of neutrons and number of electrons in the atom.
d. subtracting the number of neutrons from the number of protons in the atom.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?