a spherical asteroid with radius of 1.20 km is floating in deep space. it has an emissivity of 0.70 and a temperature of -212° C. estimate the rate at which it looses energy due to radiation

Q: A glass window pane is exactly 18 cm by 24 cm at 10°C. By how much has its area increased when it…

A: Given value--- A glass window pane is exactly 18 cm by 24 cm at 10°C. the coefficient of thermal…

Q: copper telephone wire has essentially no sag between poles 35 m apart on winter day the temprature…

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Q: A spherical asteroid with a radius of 0.92 km is floating in deep space . It has an emissivity of…

A: Temperature of the asteroid in Kelvin =-178 +273 =95 K Stephan Law for radiation =Rate of energy…

Q: P 4m 3m 6m IF q=64C. what is the E at point P Select one: O a. E= 108X109 N/C O b. E= 216X109 N/C…

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Q: An item has unknown emissivity. At T = 300 K, for 2 = 10 µm, if Wa = 0.002 what is the total radiant…

A: Given       λ=10μm ; T =300K From the units of Wλ, its clear that, Power flowing through unit area…

Q: You have been told that a Spherical pellet is initially at temperature of 200 C at and then a gas…

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Q: How long does it take the Sun to melt a block of ice at 0 °C with a flat horizontal area 1.0 m² and…

A: Formula of Insolation energy is as follows:Formula energy required to melt ice is as follows:Mass of…

Q: A tungsten light bulb filament may operate al 2900 K. What is its Fahrenheit temperature? What is…

A: The operating temperature of the filament inside the light bulb, TK=2900K

Q: ..60 GO Figure Figure 18-46 shows the cross section of a wall made of three layers. The layer…

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Q: Liquid water turns out to have a higher density at 4C degrees than at any other temperature. What…

A: Thermal expansion coefficient describe the relation between the size of an object and change in the…

Q: Object 1 has nine times the specific heat capacity and four times the mass of Object 2. The two…

A: Vv

Q: How does a coffee thermos control convection so as to keep coffee hotter longer? A Conduction is…

A: How does a coffee thermos control conduction so as to keep coffee hotter longer? (A) Conduction is…

Q: Coppersheet covers a wall and has an area 20 m2 at 150°C. Calculate the change in area when the…

A: Given Data : The Initial area of the wall is given as Ai = 20m2. The initial temperature of the wall…

Q: Determine the rate of energy transfer by radiation of a sphere of radius 7 cm at a temperature of…

A: Given: Emissivity (e) = 0.9 Difference in temperature (T) = 30.5 - 23.4…

Q: Nuclear fusion, the energy source of the Sun, hydrogen bombs, and fusion reactors, occurs much more…

A: Given: The kinetic energy of the atoms = 6.40 x 10-14 J

Q: Nuclear fusion, the energy source of the Sun, hydrogen bombs, and fusion reactors, occurs much more…

A: Kinetic energy KE = 5.76 ✕ 10−14 J.  Temperature needed T = ?    Since we have KE and we are asked…

Q: A pair of eyeglass frames are made of an epoxy plastic (coefficient of linear expansion = 1.30 x…

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Q: Concrete slabs of length 25 m are laid end to end to form a road surface. What is the width of the…

A: We know from the formula, dL = a * L0 * dT Where, dL is the width of the gap, a is thermal expansion…

Q: A ceramic heater element is 30.5 cm by 10.2 cm by 5 cm. It is rated at 1500 W and emissivity of .68.…

A: Formula of emission rate of ceramic heater is as follows: P=eσAT4-Tc4…

Q: As the friction decrease inside the pipes, the heat energy in the pipe: O Increases O Decreases O…

A: What happens to the heat energy if the friction inside the pipe decreases

Q: What is the Kinetic Energy of 2 g of oxygen at -23℃? a) 186.2 J b) 194.86 J c) 201.45 J d)…

A: B

Q: What is the net power that a person with surface area of 1.20 m2 radiates if his emissivity is…

A: Given: The surface area is 1.2 m2. The emissivity is 0.895. The skin temperature is 27oC. The room…

Q: What is the rate of energy loss through a 4.5 m x 1.0 m rectangular glass windowpane that is 0.00400…

A: The given values are, A=4.5 m×1.0 m∆x=0.00400 mTi=18° CTo=2.0° Ck=0.75 W/m·°C

Q: -27 The mass of a Helium atom is 6.64×10-"kg. A container of helium is at a temperature of 7.0°C. a.…

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Q: 61) A child has a temperature of 101 degrees F. If her total body surface area is 2 m², and she is…

A: 61) Given: Body surface area = 2m2 T=temperature of child =101°F On converting into Kelvin,…

Q: Star A has twice the radius and triple absolute temperature of star B. What is the rati of the power…

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Q: Nuclear fusion, the energy source of the sun and hydrogen bombs, occurs much more readily when the…

A: The average kinetic energy of the atoms is given as K=2.10×10-14 J

Q: What temperature will air at 20°C be cooled to if it expands adiabatically from a volume of V1 to V2…

A: From the adiabatic equation,…

Q: What is the temperature change if the system is a monatomic gas? Express vour ansvor with the…

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Q: A plastic boat whose bottom surface can be approximated as a 1.5-m-wide, 2-m-long flat surface is to…

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Q: of a concrete bl t 350C the tension of the wire is 50 N. What is the tension at 165 oC 1 expansions…

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Q: The reason why a metal doorknob at 50° F feels cooler than a wooden door at 50° F

A: Metal is a good conductor of heat and electricity. It will conduct the heat to your hand (or…

Q: For air near 0°C, by how much does the speed of sound increase for each increase in air temperature…

A: Given: The initial temperature of the sound is 0oC. The final temperature of the sound is 1oC.

Q: A metal cube of each side of length 1 m Toses all its energy at the rate of 3000 watts. If the…

A: To find-Temperature of cube (T)=?Given-A=6×l2=(6×1)=6 m2dQdt=3000 Wattse=0.4σ=5.7×10-8 S.I. Units

Q: (9%) Problem 9: Suppose a human body's core internal temperature is 37.0°C, the skin temperature is…

A: Given data The internal temperature is given as Ti =37°C. The skin temperature is given as Ts…