A thermometer is removed from a beaker of boiling water and placed in a beaker of room temperature water. The thermometer takes 15 seconds to reach a reading of 25°C. The same thermometer is returned to the boiling water for several minutes. It is then placed under a tap of running water at room temperature. The thermometer takes only 10 seconds to reach a reading of 25°C. What conclusion could you make about conduction and convection based on these observations? A) Conduction is a more efficient method of heat transfer. B) Convection is a more efficient method of heat transfer. C) No valid conclusion is suggested by these observations. D) Conduction and convection are equally efficient methods of heat transfer.
Answers: 1
Physics, 21.06.2019 13:30
What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.
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Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
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Physics, 22.06.2019 05:30
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .
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Physics, 22.06.2019 07:30
Which of the following is an example of motion in two dimensions?
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A thermometer is removed from a beaker of boiling water and placed in a beaker of room temperature w...
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