What has increased the concentration of atmospheric carbon dioxide (CO2)?

In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string

If a 2 ounce coin is dropped from the top of the washington monument and has a final velocity of 300 mph (miles per hour) when it hits the ground, how much kinetic energy will it have at that time?

What is the electric potential at a distance of 1.2 m from a 7.5 µc point charge? 5.6 × 104 v 8.1 × 104 v 5.6 × 1010 v 8.1 × 1010 v