The mass on a loaded spiral spring oscillates vertically between two extreme positions P and R equidistant from the equilibrium position Q. Which of the following statements about the system is not correct
A.
the momentum of the mass is maximum at Q
B.
the elastic potential energy of the spring is maximum at Q
C.
the kinetic energy of the mass is maximum at P
D.
the total energy of the system is always constant
A platinum resistance thermometer has a resistance 4\(\Omega\) at 0oC and 10\(\Omega\) at 100oC. Assuming the resistance changes uniformly with temperature. Calculate the resistance of the thermometer when the temperature is 45oC.