The two blocks are attached to each other by a massless string that is wrapped around a frictionless pulley. When the bottom 4.0 kg block is pulled to the left by the constant force P the top 2.0 kg block slides across it to the right. Find the magnitude of the force necessary to move the blocks at constant speed. Assume that the coefficient of kinetic friction between all surfaces is 0.40

What does si stand for,when referring to a system of measurement

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

The law of reflection states that the angle of reflection is equal to the angle of