A ball rolls down from the top of a grassy hill, reaches the bottom of the hill, continues to roll, and then starts to slow down and comes to a stop. What forces caused this ball's motion?

Explain why the elements nitrogen, oxygen, and hydrogen are often found in both the Earth's atmosphere and crust.

When you see steam fog or clouds you are seeing water on the liquid state t or f?

What is siliceous ooze mostly composed of? a. minerals that crystallize quickly from ocean water through various chemical reactionsB) the shells of diatoms (single-celled algae) and radiolarians (single-celled animals) c.

Gravity is a force of attraction between objects that is due to their weight and height between one another. a. True b. False

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3, length 84.5 cm and diameter 2.40 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g = 9.80 m/s2.

A measure of the energy of motion of the particles in a substance is its

What is the final velocity of the combined bumper cars A 225 kg red bumper car is moving at 3.0 m/s. It hits a stationary 180 kg blue bumper car. The red and blue bumper cars combine and hit a stationary green bumper car of mass 150 kg.

0.4-L glass of water at 20°C is to be cooled with ice to 5°C. The density of water is 1 kg/L, and the specific heat of water at room temperature is c = 4.18 kJ/kg·°C. The specific heat of ice at about 0°C is c = 2.11 kJ/kg·°C.

Regions in a sound wave where particles are farthest apart are called

What will happen to thermal condictivity of a substance if its thickness is doubled? Also give reason.