Which quantity is scalar?

(1) mass (3) momentum

(2) force (4) acceleration

How many hydrogen atoms are present in one molecule of an ammonium acetate NH4C2H3O2?

You are on a ParKour course. First you climb a angled wall up 9.5 meters. They you shimmy along the edge of a 3.5 meter long wall. Lastly you traverse 15 meters of obstacles to reach the end of the course. The trip takes 43 seconds.

Which of the following statements describes an actual orbit? O A. The Moon is a satellite of Earth. O B. The Sun is a satellite of Earth. O C. Earth is a satellite of the planet Jupiter. O D. The planet Jupiter is a satellite of Earth.

Which of the following is true about short circuits? A. Occurs when a very low resistance circuit is formed B. Occurs when a very high resistance circuit is formed C. Causes a very small current to form D. Cannot cause a fire

Two stationary carts are tied together by a thread with a compressed spring held between them. When the thread is cut, the two carts move apart. After the spring is released, one cart m = 3.00 kg travels east with a velocity of 0.82 m/s.

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?