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. : "Calorimetry"

Thermal Physics

Q- Assume that a person (mass 80kg) that is performing light work has a power output of 240W and does this continuously for an hour. Also assume that 30% of this energy does useful work and that the remaining 70% only increases the temperature of the person. What is the temperature increase after 1.…

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Thermal Physics

Q- During a 2.5 hour run the metabolism of a marathon runner generates excessive body heat at an average rate of 4200 KJ per hour. Assume that the body (surface area 2.0 m2) loses heat at a rate of 50 W by convection.

a) Determine the rate at which radiation dissipates heat. Assume a skin temperatu…

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Specific Heat Capacity

Q1- A 100Kg player runs at 8.0 m/s when he slides on one knee over the try line to score a try. Assume that friction between the knee and the grass surface converts 40% of the player’s original kinetic energy to heat in the skin tissue of the knee ( tissue mass is approximately 15g) and determine th…

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Calorimetry

Q1- Ice initially at -7.0°C is mixed with 200 g of water that is initially at 45°C. All of the ice melts and the temperature of the final mixture is 15°C. Find the mass of the ice. Useful info: density of water: 1,000 kg/m3, density of ice: 917 kg/m3, specific heat of water: 1.00 cal/(°C•g), specifi…

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