18.) Some filaments in old style incandescent light bulbs operated with a temper

Question

18.) Some filaments in old style incandescent light bulbs operated with a temperature equal to 3100 K. Convert this temperature to the Celsius scale.

   a.) 2827 oC

   b.) 2527 oC

   c.) 3027 oC

   d.) 3427 oC

Answer __________

19.) The Intensity (Intensity = Power/Area) of radiation that the planet Earth receives from the Sun is approximately 1360 watts/meter2 (this value is sometimes referred to as the Solar Constant). The distance from the Earth to the Sun is 1.50 x 1011 meter. The distance from the Sun to the Solar System Frost Line (closest location to the Sun in the path of direct sunlight at which the amount of solar radiation is not enough to prevent the formation of ice crystals) is estimated to be 4.50 x 1011 meter.   Estimate the intensity of solar radiation in the region of the Solar System Frost Line. (Surface Area of a sphere with radius R : A = 4R2 ).

   a.) 1800 watts

   b.)   150 watts

   c.) 3740 watts

   d.)     38 watts                                 

Answer __________

20.) The surface area of a sphere, radius = R, is A = 4 R2. On average, the distance from the Earth to the Sun is approximately 1.50 x 1011 meters. Consider an asteroid type object beyond the orbit of Pluto and at a distance of 9.0 x 1012 meters from the Sun. Compared to the Earth, what percentage of sunlight does Jupiter receive?

   a.)   9.3 %

   b.)   52 %

   c.) 0.027 %

   d.) 126 %

Explanation / Answer

18.)temperature in celsius scale

T = 3100 K

T = 3100-273

T = 2827 0C

the answer is a

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