Created by StemPy LabA pendulum clock has a brass pendulum rod, and it keeps correct time at . The coefficient of linear expansion of brass is . On a summer day the temperature stays at . Over one day (24 hours), the clock
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← A U-tube of uniform cross-section stands vertically and contains some mercury, of relative density 13.6. Water is poured slowly into the left arm until the column of water above the mercury in that arm is 27.2 cm tall, as shown in the figure. The water and mercury do not mix. How far above the mercury surface in the right arm is the top of the water in the left arm?One mole of an ideal diatomic gas (with rigid molecules) is heated in such a way that its pressure stays directly proportional to its volume, P = β V, where β is a constant. Its temperature rises by 50 K. Taking R = 8.3 J mol⁻¹ K⁻¹, the heat supplied to the gas is →
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