A light inextensible rope is used to pull a particle of mass 2 kg along a rough horizontal plane. Given the tension in the rope is 27 N and acts at an angle of 30° above the horizontal and that the particle is moving with an acceleration of 10 m s - , what is the coefficient of sliding friction between the particle and the surface?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9