The temperature within the Earth's crust increases about 1.0 C for each 30 m of depth. The thermal conductivity of the crust is 0.80 W/C-m. Determine the heat transferred from the interior to the surface for the entire Earth in 9.0 h. Express your answer using two significant figures. Submit 1971| ΑΣΦ Request Answer 1 ? J
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- wp1-A surveyor has a stainless steel measuring tape that is calibrated to be 100.000 m long (i.e., accurate to ±1 mm) at 20°C. She needs to add the correction factor to get the true distance. Submit Correct Part B How large, in mm, is the correction factor? Express your answer in millimeters to two significant figures. ► View Available Hint(s) Previous Answers AL = 11 Submit VΠ ΑΣΦ Provide Feedback Previous Answers ? X Incorrect; Try Again; 14 attempts remaining mmWater vapor at a pressure 0f 2X10 N/m2 0nd a dempirature of as0°c is 0.32 x106 N/m2.following expanded to a yoessune of ec.For the low P.V1.25 this expanston determine: a. Pinal vapor condnion b. Syecipie haat transpan c. Changis in tntroyy SIDU
- 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?The specific heat of liquid water is 4190 J/kg. K. ▼ Part A What is the molar specific heat of liquid water in J/mol. K? Give your answer as a multiple of R, rounded to the nearest half integer. Express your answer as a multiple of R to the nearest half integer. Cmol = 9 R Submit Correct Part B Previous Answers Equal moles of liquid water and helium gas are heated at constant pressure from the same initial temperature to the same final temperature. By what factor is the entropy increase of the water larger than the entropy increase of the helium? Express your answer to two significant figures. AS water ASHe Submit 17| ΑΣΦ Request Answer ?Review | Seals may cool themselves by using thermal windows, patches on their bodies with much higher than average surface temperature. Suppose a seal has a 0.030 m? thermal window at a temperature of 30° C.(Figure 1) Part A If the seal's surroundings are a frosty -18 °C, what is the net rate of energy loss by radiation? Assume an emissivity equal to that of a human. Express your answer in watts. ? Qnet W At Submit Request Answer Figure < 1 of 1 < Return to Assignment Provide Feedback 33.0 C 30 25 20 15 62 min 1.5°C
- 7) What is the total amount of heat in units of Btu’s we must add to a 5.00 pound block of ice at negative 12 degrees Fahrenheit to turn all of it into steam at 242.00 degrees Fahrenheit? (the heat of fusion and the heat of vaporization in US units is NOT in Table 15. You will find those values in the chapter material in the book) Use a temperature bar to show your work. Heat of vaporization (Water) = 540 cal/g, or 540 kcal/kg, or 2.26 MJ/kg, or 970 Btu/lbQuestion 1 During a 30-minute period under clear skies, 2.0 x 10 J of total solar energy were incident upon Bunche Hall. Use this information on energy and time to complete the following tasks. Calculate the mean incident radiant flux over that 30-minute period. What are the units for the previous answer for Radiant Flux Kelvin Meters Microns J/s^2 J/s Watts W/m^2 Nanometers W/m Joules Fahrenheit CelsiusX X 22-23 CFISD Physics B CR-Edg x core.learn.edgenuity.com/player/ ot! Creator B CR Determining the Specific Feat of a substance A 10-gram aluminum cube absorbs 677 joules when its temperature is increased from 50°C to 125°C. What is the specific heat of aluminum? Express the answer to the hundredths place. C Quick Check + Intro Done
- Incorrect answerHi please help: A heat transfer of 8.0 x 10^5 J is required to convert a block of ice at -10 degrees Celsius to water at 12 degrees Celsius What was the mass of the block of ice? Express answer using two significant figures in kgSH-1 Suppose you have a 2.50 kg sample of an unknown material. When you add 1.25×105 J ofheat to your sample, the temperature goes from 10.0 ˚C to 45.0 ˚C.(a) What is the heat capacity (C) of your sample, in J ˚C−1?(b) What is the specific heat (c) of the material, in J ˚C−1 kg−1?(c) How much heat is lost from the sample when the temperature cools from 45.0 ˚C to25.0 ˚C? Give your answer in Joules (J).