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Year 1 of the physics course of the University of Oxford

Short options paper of the physics Prelims of the University of Oxford

Past exam of the short options paper of the physics Prelims of the University of Oxford

2021

If the <temperatures>, exposed <area>, and surroundings remain fixed, the net radiated <energy> over one day is
$$
\boxed{E=P_{\rm net}(86400\,\mathrm s)\simeq1.60\times10^7\,\mathrm J.}
$$
Using the supplied conversion gives
$$
\boxed{E\simeq3.82\times10^6\,\mathrm{cal}=3.82\times10^3\,\mathrm{kcal}.}
$$
A dietary Calorie is one <kilocalorie>, so the result is about 3820 dietary Calories, rather than 3.82 million dietary Calories.

Solution

Past exam of the short options paper of the physics Prelims of the University of Oxford / 2021 / S03 / 1 / f / Solution

Past exam of the short options paper of the physics Prelims of the University of Oxford / 2021 / S03 / 1 / f / Solution

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Past exam of the short options paper of the physics Prelims of the University of Oxford / 2021 / S03 / 1 / f / Solution

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