To leave nicholson, you exit via the door to the quad. the door is 40 inches wide and has a mass of 200 kg. you push the door with a perpendicular force of 52.55n exactly 0.94m away from the hinge. this generates the minimum torque, , required to open the door. if you pushed the door 0.19m away from the hinge, with what force (in n) must you push the door to supply the same torque?

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