4 of 4Electronics and inhabitants of the InternationalSpace Station generate a significant amount ofthermal energy that the station must get rid of. Theonly way that the station can exhaust thermalenergy is by radiation, which it does using thin,1.6 m -by-3.1 m panels that have a workingtemperature of about 6° C.I Review I Constants I Periodic TablePart AHow much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation wibe negligible. Assume that the emissivity of the panels is 1.0.You may want to review (Page)Express your answer to two significant figures and include the appropriate units.• View Available Hint(s)HÀP =ValueUnitsSubmit< Return to AssignmentProvide FeedbackMacBool

Dimensions of panels = 1.6 m by 3.1 m Emissivity (e) = 1Temperature (T) = 6oC

Answered: Electronics and inhabitants of the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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6. DETAILS SERPSE10 19.6.OP.026. MY NOTES ASK YOUR TEACHER At midday when a shopping center with a flat black roof is directly under the Sun, it receives 1,000 W of solar power per square meter of surface from the Sun. If this hot surface loses energy only by radiation back into the atmosphere, what is its equilibrium temperature (in K)? You may use an emissivity of e=1 for a black surface. K
A 0.0545 kg chunk of an unknown metal that has been in boiling water for several minutes is quickly dropped into an insulating Styrofoam beaker that contains 0.462 kg of water at room temperature (20.0° C). After waiting for a few minutes, you observe that the water's temperature has reached a constant value of 22.0° C. Part A Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? Express your answer in joules per kilogram-kelvin to three significant figures. ΑΣφ J/(kg · K) C = Submit Request Answer Part B Use the table below to identify the metal. Specific heat (c) Material J/(kg K) cal/(g K) Solids Lead 0.13 x 103 0.031 Mercury 0.14 × 103 0.033 Silver 0.23 × 103 0.056 Copper 0.39 × 10³ 0.093 Iron 0.47 x 103 0.112 Marble (CACO3) 0.88 × 10³ 0.21 Salt 0.88 × 103 0.21 Aluminum 0.91 × 103 0.217 Beryllium 1 97 x 103 0.471
R Review I Constants Part A A container holds 1.0 g of argon at a pressure of 8.0 atm. How much heat is required to increase the temperature by 100° C at constant volume? Express your answer with the appropriate units. H HẢ Q = Value Units %3D Submit Request Answer Part B How much will the temperature increase if this amount of heat energy is transferred to the gas at constant pressure? Express your answer in kelvins. ΑΣφ K AT =
wp1-
3 of 4 A stainless-steel-bottomed kettle, its bottom 25 cm in diameter and 1.6 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W. Review I Constants I Periodic Tabl Part A What is the temperature of the bottom surface of the kettle? Thermal conductivity of stainless steel is 14 W/(m K). Express your answer using four significant figures. VO AEO ? T = 102.65 °C Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 4 significant figures in the last step. Ne Provide Feedback
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 1.8-m-by-3.6-m panels that have a working temperature of about 6 °C and an emissivity of 0.85. Part A How much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation will be negligible. The temperature of deep space, which the panels face, is close to 0 K. Hint: Don't forget that the panels have two sides! Express your answer with the appropriate units. ► View Available Hint(s) P = Submit μA Value Previous Answers W .... ?
4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?
A: pherical body of 2.0 cm diameter is maintained at 500 °C. Assuming that it radiates as if it is a blackbody, at what rate is energy radiated from the sphere? O 35.2 W O 41 W O 52 W Not any of the choices listed 25.5 W
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Review 8-64 (algorithmic) Question Help ▼ When boiling water, a hot plate takes an average of 8 minutes [min] and 35 seconds [s] to boil 110 milliliters [mL] of water. Assume the temperature in the lab is 71 degrees Fahrenheit ["F]. The hot plate is rated to provide 385 watts [W]. If we wish to boil 110 milliliters [mL] of acetone using this same hot plate, how long do we expect the process to take? Acetone has a boiling point of 56 degrees Celsius [c]. [Hint: you must determine the efficiency of the hotplate.] Click the icon to view conversion formulas for temperature scales. Click the icon to view the factors for conversions involving temperature differences. Click the icon to view the conversion table. E Click the icon to view the density of water. E Click the icon to view the table of specific heats. E Click the icon to view the specific gravities of liquids. The time required to boil 110 mL of acetone is s. (Round your answer to the nearest whole number.) More Enter your answer in…
A physicist uses a cylindrical metal can 0.350 m high and 0.090 m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09 x 104 J/kg. Completely surrounding the metal can are walls maintained at the temperature of liquid nitrogen, 77.3 K, with vacuum between the can and the surrounding walls. Part A How much helium is lost per hour? The emissivity of the metal can is 0.200. The only heat transfer between the metal can and the surrounding walls is by radiation. Express your answer in gram per hour. Am At Submit ΠΕ ΑΣΦΑΦ Request Answer PZ ? Review | Constants g/h
The basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 68 kg (150 lb) person of height 1.83 m (6.0 ft) would have a body surface area of approximately 1.9 m². Part A What is the net amount of heat this person could radiate per second into a room at 19.0° C (about 66.2°F) if his skin's surface temperature is 31.0° C? (At such temperatures, nearly all the heat is infrared radiation, for which the body's emissivity is 1.0, regardless of the amount of pigment.) Express your answer in watts. ΑΣφ ? Hnet W %D Submit Request Answer Part B Complete previous part(s)

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