Two technicians are discussing reasons why the brake fluid level in the master cylinder might drop. technician a says that it is normal for the fluid level to drop as the brake linings wear. technician b says that a hydraulic leak in the system will cause fluid level to drop. who is correct?
a) technician a
b) technician b
c) technician a and b

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Which of the following best describes the circuit shown below?