A body of mass 200g and specific heat capacity 0.4Jg-1k-1 cools from 37°C to 31°C. Calculate the quantity of the heat released by the body.
A. 4800J B. 1200J C. 480J D. 202J Correct Answer: Option C Explanation Q = mcθ = 200 x 0.4 x 6 = 480JA relative density bottle of volume 50cm3 is completely filled with a liquid at 30oC. It is then heated to 80oC such that 0.75cm3 of the liquid is expelled. Calculate the apparent cubic expansivity of the liquid.
A. 0.00030k-1 B. 0.00032k-1 C. 0.01970k-1 D. 0.02030k-1 Correct Answer: Option A A. 0.00030k-1Which of the following statements distinguishes thermal conduction for convection?
i. Conduction requires a material medium while convection does not ii. In convection, there is actual motion of hot material, while in conduction, molecules vibrate faster about their mean positions iii. Conduction takes place in solids while convection takes place in...The ice and steam point on a mercury-in-glass thermometer are 10cm and 30cm respectively. Calculate the temperature in decree Celsius when the mercury meniscus is the 14cm mark
A. 20°C B. 30°C C. 34°C D. 70°C Correct Answer: Option A A. 20°CProducts
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