An object of mass 10 kg encounters a frictional force when sliding to the right. Given the coefficient of friction between the object and the surface
is 0.15, determine:
a) The normal force
b) The gravitational force
c) The frictional force
Assume value of gravitaton constant g = 9.81m/s2

Avoltaic cell converts chemical energy to

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.