One end of an insulated metal rod is maintained at 100∘C and the other end is maintained at 0.00∘C by an ice–water mixture. The rod has a length of 80.0 cm and a cross-sectional area of 1.05 cm^2. The heat conducted by the rod melts a mass of 9.25 g of ice in a time of 15.0 min. Find the thermal conductivity k of the metal.

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

The resistance of 100 w bulb is less than resistance of 40 w bulb. explain the reason.