How many protons make an atom

What is the difference in landing time between a ball dropped vs a ball thrown horizontally from the same height at the same time

This is a green pigment in chloroplasts that traps light energy from the sun.

Compute the temperature of an object which has peak emissions at each of the following wavelengths. Note what kind of light it is (by name of type). (a) 3 meter, (by) 3 cm, (x) 500 nm, (d) 1 nm.

When you ride your bike uphill, where does the energy you use come from

where the units of x are length and the numbers 2.6 and 5.1 have appropriate units so that U (x) has units of energy. What is the equilibrium separation of the atoms (that is the distance at which the force between the atoms is zero)

If an astronomer claims to have discovered an object with a very eccentric orbit, what best describes the orbital trajectory of the object?

This gland lets your body use energy

Question: Suppose you see a crescent Moon; how much of the Moon's entire surface (the full globe of the Moon) is in daylight?

What is the maximum number of atoms that can be bonded in an ionic bond

You dribble a basketball while walking on a basketball court list the pairs of action reaction forces in this situation