. Inside of a calorimeter (insulated container) is placed 200gof water at 20°C. The lid of the calorimeter is briefly lifted and50g of lead is added initially at 200°C. What is the thermalequilibrium temperature? (3pts)
10. An object of mass 50kg is pushed in the +x direction with aforce of 40N flat along a horizontal surface causing a netacceleration of 0.15m/s2 in the +x direction. What is thecoefficient of kinetic friction between the surface and theobject?
