Explanation Given: Surface temperature of the sun, Tsun = 5800 K Mass of Regulus A, M = 3 .8Msun Radius of Regulus A, R = 3 .1Rsun Relation between the radiated power of sun and that of Regulus A, P/Psun = 1 .5(M/Msun)3 .5 Formula used: P = eσAT4 Calculation: According to the Stefan-Boltzmann equation, the radiative power of a star is given by, P = eσAT4, where e is emissivity, σ is Stefan-Boltzmann Constant, A is area and T is surface temperature The emissivity of Regulus A and the sun are assumed to be the same Therefore, the ratio of powers for Regulus A and the sun can be written as, P/Psun = (eσAT4)/( eσAsunTsun4)

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ISBN: 9781323834831

Author: Knight

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Chapter 19, Problem 71EAP

To determine

The surface temperature of the star Regulus A.

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Chapter 19, Problem 70EAP

Chapter 19, Problem 72EAP

Chapter 19 Solutions

PHYS 212 FOR SCI+ENG W/MAST PHYS >ICP<

Ch. 19 - Prob. 1CQ Ch. 19 - Do (a) temperature, (b) heat, and (c) thermal...Ch. 19 - Prob. 3CQ Ch. 19 - You need to raise the temperature of a gas by...Ch. 19 - Prob. 5CQ Ch. 19 - Prob. 6CQ Ch. 19 - FIGURE Q19.7 shows two different processes taking...Ch. 19 - FIGURE Q19.8 shows two different processes taking...Ch. 19 - The gas cylinder in FIGURE Q19.9 is a rigid...Ch. 19 - The gas cylinder in FIGURE Q19.10 is well...

Ch. 19 - The gas cylinder in FIGURE Q19.11 is well...Ch. 19 - How much work is done on the gas in the process...Ch. 19 - Prob. 2EAP Ch. 19 - Prob. 3EAP Ch. 19 - A 2000 cm3 container holds 0.10 mol of helium gas...Ch. 19 - Prob. 5EAP Ch. 19 - Prob. 6EAP Ch. 19 - Draw a first-law bar chart (see Figure 19.12) for...Ch. 19 - Draw a first-law bar chart (see Figure 19.12) for...Ch. 19 - 9. Draw a first-law bar chart (see Figure 19.12)...Ch. 19 - Prob. 10EAP Ch. 19 - J of work are done on a system in a process that...Ch. 19 - How much heat energy must be added to a...Ch. 19 - Prob. 13EAP Ch. 19 - Prob. 14EAP Ch. 19 - Prob. 15EAP Ch. 19 - Prob. 16EAP Ch. 19 - One way you keep from overheating is by...Ch. 19 - Prob. 18EAP Ch. 19 - Two cars collide head-on while each is traveling...Ch. 19 - An experiment measures the temperature of a 500 g...Ch. 19 - 30 g of copper pellets are removed from a 300°C...Ch. 19 - A 750 g aluminum pan is removed from the stove and...Ch. 19 - A 50.0 g thermometer is used to measure the...Ch. 19 - A 500 g metal sphere is heated to 300°C, then...Ch. 19 - A 65 cm3 block of iron is removed from an 800°C...Ch. 19 - Prob. 26EAP Ch. 19 - A container holds 1.0 g of oxygen at a pressure of...Ch. 19 - The volume of a gas is halved during an adiabatic...Ch. 19 - Prob. 29EAP Ch. 19 - Prob. 30EAP Ch. 19 - Prob. 31EAP Ch. 19 - Prob. 32EAP Ch. 19 - Prob. 33EAP Ch. 19 - Prob. 34EAP Ch. 19 - Prob. 35EAP Ch. 19 - What maximum power can be radiated by a...Ch. 19 - Radiation from the head is a major source of heat...Ch. 19 - Prob. 38EAP Ch. 19 - Prob. 39EAP Ch. 19 - Prob. 40EAP Ch. 19 - Prob. 41EAP Ch. 19 - Prob. 42EAP Ch. 19 - Prob. 43EAP Ch. 19 - The specific heat of most solids is nearly...Ch. 19 - Prob. 45EAP Ch. 19 - Prob. 46EAP Ch. 19 - Prob. 47EAP Ch. 19 - Prob. 48EAP Ch. 19 - .0 mol of gas are at 30°C and a pressure of 1.5...Ch. 19 - A 6.0-cm-diameter cylinder of nitrogen gas has a...Ch. 19 - Prob. 51EAP Ch. 19 - An ideal-gas process is described by p = cV 1/2 ,...Ch. 19 - Prob. 53EAP Ch. 19 - Prob. 54EAP Ch. 19 - Prob. 55EAP Ch. 19 - Prob. 56EAP Ch. 19 - Prob. 57EAP Ch. 19 - .10 mol of nitrogen gas follow the two processes...Ch. 19 - Prob. 59EAP Ch. 19 - Prob. 60EAP Ch. 19 - Prob. 61EAP Ch. 19 - Prob. 62EAP Ch. 19 - Prob. 63EAP Ch. 19 - Prob. 64EAP Ch. 19 - Prob. 65EAP Ch. 19 - Prob. 66EAP Ch. 19 - Prob. 67EAP Ch. 19 - Prob. 68EAP Ch. 19 - Prob. 69EAP Ch. 19 - A cylindrical copper rod and an iron rod with...Ch. 19 - Prob. 71EAP Ch. 19 - Prob. 72EAP Ch. 19 - Prob. 73EAP Ch. 19 - Prob. 74EAP Ch. 19 - Prob. 75EAP Ch. 19 - Prob. 76EAP Ch. 19 - Prob. 77EAP Ch. 19 - Prob. 78EAP Ch. 19 - Prob. 79EAP Ch. 19 - Prob. 80EAP Ch. 19 - Prob. 81EAP Ch. 19 - Prob. 82EAP

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