What causes an atom to be neutral?

a. equal number of protons and neutrons

b. equal distance between the nucleus and electrons

c. equal number of electrons and protons

d. equal distribution of electrons

Richard rides a bike on a road sloping downward and inclined at an angle of 30° with the horizontal. If he moves at a constant speed of 10 meters/second, calculate his vertical downward velocity.

Mount Everest, at 29,028 feet, is the tallest mountain on the Earth. What is its height in kilometers? (Assume that 1 kilometer equals 3,281 feet.)

In which landscape region of new york is the most resistant bedrock found?

Which statement describes what happens when Bret runs up a flight of stairs? His kinetic energy increases. His potential energy decreases. His kinetic energy is converted into potential energy. His potential energy is converted into kinetic energy.

Which of the following has more inertia? bowling ball, hammer, Tennis ball feather

Light, dry snow is called powder. Skiing on a powder day is different than skiing on a day when the snow is wet and heavy.

Light from the sun reaches the earth in 8.3 minutes. In how many minutes does the light from the sun reach venus

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

Which actions most likely cause the domains in a ferromagnetic material to align?

A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically. Which object is traveling faster when it hits the level ground below if neither of them experiences any air resistance?