While discussing automotive air conditioning: Technician A says the thermostatic expansion valve and the fixed orifice tube both provide for a pressure drop in the refrigerant. Technician B says heat from the evaporator core surface is transferred in to the refrigerant. Who is correct?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

What is friction? how does it affect the motion of an object?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit