As a ball falls downward what energy increases and what energy decreaces

The larger the hole in the ozone layer gets, A. the less UV rays reach the Earth B. the more heat escapes from the Earth C. the more UV rays reach the Earth D. the warmer the Earth will get

After a reaction has gone to completion, it is not reversible.

What force will result in stretching the spring 10.0 centimeters

If you are diving and playing in the waves near a beach and suddenly find that you are being pulled out into the ocean at a relatively quick pace, what current are you most likely trapped in?

4. Among the following elements, which one has the most ionization energy? A) Cl B) Ba C) Si D) Br

The heat of combustion of propane, C3H8, is 2220 kJ/mol. The specific heat of copper is 0.385 J/g°C. How many grams of propane must be burned to raise the temperature of a 10.0 kg block of copper from 25.0°C to 65.

Which is an example of Temporal Isolation? A. Flowers that bloom in different months. B. Birds that have different mating calls C. Fruits flies that mate in different locations. D. Squirrels that have different fur colors

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

20 Which statement describes a reversible reaction at equilibrium? (1) The activation energy of the forward reaction must equal the activation energy of the reverse reaction.

Count the total number of atoms in CaCO3: 2 3 4 5 6