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Carnot devices: A Carnot air conditioner operates between an indoor temperature of 20°C and an outdoor temperature of 39°C. How much energy does it need to remove 2000 J of heat from the interior of the house?
Q3: A diode installed across a coil with
Q9: Shock waves: An airplane flying faster than
Q12: Calorimetry: An 80-g aluminum calorimeter contains 380
Q20: Carnot engine: A coal-fired plant generates 600
Q35: Meters: In the circuit shown in the
Q37: Capacitors in combination: The capacitive network shown
Q45: Weight and g: The radius of the
Q52: Doppler effect: You are driving along a
Q61: Conduction of heat: Two metal rods, one
Q78: Molecular speeds: The root-mean-square speed (thermal speed)