Tim runs 50 min 25 seconds to the east. Then he runs 30 m to the west in 20 seconds What is his average velocity? 1.78 m/s
0.44 m/s
-2 m/s
2 m/s

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Bonds within one water molecule are examples of