11)
two identical pots, one black and one silver, containing exactly the same amounts of water...
Physics, 06.11.2019 06:31 sarahjdeering
11)
two identical pots, one black and one silver, containing exactly the same amounts of water, are heated to the same
temperature. they are left uncovered and placed in the same room. after 15 minutes the water in the black pot is significantly
cooler than the water in the silver pot. which of these statements best explains this difference?
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The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation
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Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
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The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 Γ 1013 rad/s. the mass of a nickel atom is 9.75 Γ 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 Γ 10-34 j β’ s, , 1 ev = 1.60 Γ 10-19 j)
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