What is the rate of heat flow through a pane of glass that is 40.0 cm by 30.0 cm with a thickness of 4.00 mm
when the outside temperature is -10.0°C and the inside temperature is 25.0°C? The thermal conductivity of glass is 0.105 W/(m?K) and the specific heat of glass is 0.180 cal/(g?°C).
A)
24.2 W
B)
3.81 W
C)
18.6 W
D)
47.3 W
E)
110 W
E
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A) its temperature. B) its change in temperature. C) its absorption spectra. D) the Doppler effect. E) all of the above
A curved portion of highway has a radius of curvature of 65 m. As a highway engineer, you want to bank this curve at the proper angle for a steady speed of 22 m/s
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Astronomers think that the inner core of Jupiter is composed mainly of ________.
A. helium B. rock and iron C. uranium D. hydrogen E. water
Which of the following is not a unit of power?
A. Watt B. KiloWatt C. Joule/second D. Horsepower E. KiloWatt-hour