Tuesday, May 5, 2020

Thermal Physics Questions free essay sample

Two different objects are in thermal contact with one another. The objects are at different temperatures. The temperatures of the two objects determine A. the process by which thermal energy is transferred. B. the heat capacity of each object. C. the direction of transfer of thermal energy between the objects. D. the amount of internal energy in each object. The specific heat capacity of a metal block of mass m is determined by placing a heating coil in its centre, as shown in the diagram above. We will write a custom essay sample on Thermal Physics Questions or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The block is heated for time t and the maximum temperature change recorded is .The ammeter and voltmeter readings during the heating are I and V respectively. The specific heat capacity is best calculated using which one of the following expressions? A. c = B. c = C. c = D. c = The specific heat capacity of a metal block of mass m is determined by placing a heating coil in its centre, as shown in the diagram above. The block is heated for time t and the maximum temperature change recorded is . The ammeter and voltmeter readings during the heating are I and V respectively. Which one of the following is not a source of error in the experiment? A. Some thermal energy is retained in the heater.B. The thermometer records the temperature at one point in the block. C. Some thermal energy is lost from the variable resistor in the circuit. D. The block is heated at its centre, rather than throughout its whole volume. (1) A container holds 20 g of neon (mass number 20) and also 8 g of helium (mass number 4). What is the ratio ? This question is about modelling the thermal processes involved when a person is running. When running, a person generates thermal energy but maintains approximately constant temperature. (a)Explain what thermal energy and temperature mean.

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