Part (a) of the drawing shows a rectangular bar whose dimensions are Lox 2L × 3Lp. The bar is at the same constant temperature as the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the drawing. The temperature of each piece is the same as that of the original bar. (a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)? (b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?
Part (a) of the drawing shows a rectangular bar whose dimensions are Lox 2L × 3Lp. The bar is at the same constant temperature as the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the drawing. The temperature of each piece is the same as that of the original bar. (a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)? (b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?
Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
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Part (a) of the drawing shows a rectangular bar whose dimensions are Lox 2L × 3Lp. The bar is at the same constant temperature as
the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the
drawing. The temperature of each piece is the same as that of the original bar.
(a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)?
(b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the
two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?
Transcribed Image Text:240
Lo
(a)
340
(b)
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