A car moving at 27 m/s [fwd] strikes the back end of a stationary disabled rock truck bringing the car to rest in a time of 0.7 seconds. If the 65 Kg person inside the vehicle was wearing a seatbelt, then calculate the force that the belt would exert on the person.

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?