Created by StemPy LabTwo Carnot engines work one after the other. Engine 1 takes heat from a source at and gives out heat at an intermediate temperature . Engine 2 takes in all of that heat at and gives out heat to a sink at . What must be if the two engines do equal amounts of work, and what must it be if they have equal efficiencies?
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← A gas is taken round the cycle shown in the pressure-volume diagram. On the diagram the cycle is a circle, running clockwise. The pressure goes between 1 × 10⁵ Pa and 3 × 10⁵ Pa, and the volume between 1 × 10⁻³ m³ and 3 × 10⁻³ m³. The net heat absorbed by the gas in one cycle is closest toA U-tube of uniform bore holds a liquid column whose total length, measured along the tube, is 40 cm, as shown in the figure. The liquid in one arm is pushed down a little and then let go, so the liquid swings back and forth. Ignoring friction and taking g = 10 m/s², the period of the oscillation is closest to →
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