Problem 9.10 The intensity of sunlight hitting the earth is about 1300 W/m². If sunlight strikes a perfect absorber, what pressure does it exert? How about a perfect reflector? What fraction of atmospheric pressure does this amount to?
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- E.LAG M E.LA E.J.A.G The two skewed beams have a thermal expansion coefficient a, and all contact points are guided. The angle to the horizontal plane is π/6. At what temperature (change) does the structure become unstable? (need explanations with image i.,e deformations? and why certain of formulas is being used.)4.2 The Debye temperature for a diamond is 2230 K. At 10 K, calculate; (i) the highest possible vibrational frequency, and (ii) the molar heat capacity of a diamond.Q1 The mobility of the electrons and the holes in an intrinsic germanium m? ) and (0.17. V.sec. -) respectively, the at a certain temperature is (0.36- V.sec. concentration of the electrons and the holes equals (2.5x109 / m² ). Calculate the conductivity. -1 Ans.) 2.12 (N.m)
- Part A A large cavity that has a very small hole and is maintained at a temperature T' is a good approximation to an ideal radiator or blackbody. Radiation can pass into or out of the cavity only through the hole. The cavity is a perfect absorber, since any radiation incident on the hole becomes trapped inside the cavity. Such a cavity at 500° has a hole with area 5.00 mm². How long does it take for the cavity to radiate 200 J of energy through the hole? Express your answer in seconds. ΜΕ ΑΣΦ t = Submit Request Answer ? Sa. what is the power radiated per square centimeters from skin at a temp. of 306°K.?Answer please
- The enthalpy of 36 g of water vapor increases by 1830 J when its temperature increases from 150C to 175C. Assume that water vapor is an ideal gas. 1. What is the molar specific heat at constant pressure in SI units for water vapor? 2. By how much did the water vapor’s thermal energy increase? Express your answer with the appropriate units.7.4 Dieterici's equation of state is written in terms of constants a and b as P(V –b) = RT exp(-a/RTV). Determine the Joule and Joule-Kelvin coefficients for a gas obeying this equation.Please answer it both clearly. Thank you. 2. A copper has essentially no sag between poles 50m apart on a winter day when the temperature is 10°C. How much longer is the copper wire on a summer day when T=35.0°C? 3. What is the volume of a aluminum ball at 10°C if it's volume atv160°C is 300cm³?