Acamera weighing 21 n falls from a small drone hovering 28 m overhead and enters free fall. what is the gravitational potential energy change (in j) of the camera from the drone to the ground if you take the following reference points?

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.

Explain the consequences of this addiction to the brain tissue

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction