What is the difference between a latch and a flip-flop?

a. "latch" has 4 letters, but "flip-flop" has 8 letters and a hyphen.
b. latches have a clock input but flip-flops don’t.
c. latches have a ~q output but flip-flops don’t.
d. latches can change state any number of times during a clock pulse, but flip-flops will never change state more than once per clock pulse.
e. latches will never change state more than once per clock pulse, but flip-flops can change state any number of times during a clock pulse.

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.