Which has greater kinetic energy: a tennis ball that has a mass of 0.3kg travelling at 80m/s or a train that has a mass of 10000kg and is moving at 0.1m/s? tennis balltrain

What properties are different between blue light and red light?

3. As the duration of a maximal effort increases from 10 seconds or less to between 10 and 180 seconds, what factor becomes limiting in terms of energy production?

why are the surface features of the moon essentially unaltered since youth

20. What unit of measurement would you choose to measure a. the amount of juice you drank for breakfast? b. the amount of salt you put on French fries? c. the amount of water you use in the shower? d.

A student weighing 160 pounds hangs for dear life from a cable tied to two other cables fastened to a support as shown above. The upper cables make angles of 39º and 55º with the horizontal.

A force acts on a 5kg object at rest. How fast will the object accelerate on a frictionless surface? A.) 4 m/s^2 B.) 15 m/s^2 C.) 25 m/s^2 D.) 100 m/s^2

Four wrestlers step on a scale for a tournament. Wrestler A weighs in at 170 pounds; wrestler B weighs in at 168 pounds; wrestler C weighs in at 171 pounds; and wrestler D weighs in at 169 pounds.

What is a change in velocity per time

Recall specific heat of water is 4186 j/kg/C. Find the specific heat of sample. Water. Sample Mass 109 192 Internal temperature. 21. 67 Final temperature. 30.1. 30.1

During which period did the first large herbivores and carnivores appear?