A bucket full of hot water cools from 75 °C to 70 °C in time T1 , from 70 °C to 65 °C in time T2 and from 65 °C to 60 °C in time T3 , then

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Questions Match

1.
A bucket full of hot water cools from 75 °C to 70 °C in time T₁ , from 70 °C to 65 °C in time T₂ and from 65 °C to 60 °C in time T₃ , then

1. T1 = T2 = T32. T1 > T2 > T33. T1 < T2 < T34. T1 > T2 < T3

2. Identify all examples that demonstrate inertia of rest: (1) A book on a table remains stationary. (2) A person is thrown forward when a vehicle stops. (3) A ball remains at the bottom of a bucket even when it is suddenly moved. (4) A coin drops into a glass when the card below is flicked.

1. 1, 3 and 4 only2. 2, 3 and 4 only3. 1 and 2 only4. All of the above

3. What is the work done by the normal force when a person lifts a bucket vertically upward at constant velocity?

1. Positive2. Negative3. Zero4. Equal to gravitational work

A bucket full of hot water cools from 75 °C to 70 °C in time T1 , from 70 °C to 65 °C in time T2 and from 65 °C to 60 °C in time T3 , then