Blocks A and B are held at rest. After releasing block A, it starts to slide up the incline. The coefficient of friction between block A and the incline is µk = 0.2. Neglecting the masses of the pulleys and the effect of friction in the pulleys, determine the tension in the cable.

Acarpenter is driving a 15.0-g steel nail into a board. his 1.00-kg hammer is moving at 8.50 m/s when it strikes the nail. half of the kinetic energy of the hammer is transformed into heat in the nail and does not flow out of the nail. what is the increase in temperature of the nail after the three blows that the carpenter needs to drive the nail in completely? the specific heat of steel is 448 j/kg ∙ k. a) 2.7 k b) 1.8 k c) 7.7 k d) 8.1 k e) 3.6 k