All of the following exhibit projectile motion except: (A)- A flat rock skipping across a lake.
(B)- A person diving off a cliff.
(C)- The space shuttle orbiting the Earth.
(D)- A three-point shot in basketball.

The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.

What causes the development of most clouds and precipitation in the atmosphere?

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton