Technician A says the proportioning valve is an integral part of the master cylinder on SOME late model vehicles. Technician B says the proportioning valve may be installed in the wheel cylinders. Who is correct?

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.