A ray of light from air hits the water surface n = 1.33 at I below the angle of incidence i. Determine the angle of refraction in the following two cases a/ i=30 degrees b/ i=60 degrees

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.)

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

What is the coefficient of kinetic friction μk between the block and the tabletop?