Physics, 21.12.2019 19:31 musicaljay1276

Which of the following best describes why the sun emits most of its energy in the form of visible light?
(a) like all objects, the sun emits thermal radiation with a spectrum that depends on its temperature, and the sun's surface temperature is just right for emitting mostly visible light. (b) nuclear fusion in the sun's core produces visible light photons. (c)the sun's gas is on fire like flames from wood or coal, and these flames emit visible light. (d) the visible light comes from energy level transitions as electrons in the sun's hydrogen atoms jump between level 1 and level 2.

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(A) Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light.

Explanation:

The temperature of an object is a direct measurement of the energy of motion that absorbs all of the radiation that it receives (that is, it does not reflect any light, nor but many objects (stars included) behave approximately like blackbodies. Therefore, based on the location or the composition of the object, such as the Sun, it emits a spectrum of visible light

Answer from: mtiger

(A) Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light.

Explanation:

The peak wavelength emitted by a body depends on it temperature. The temperature of the surface of the sun is about 5800 K which corresponds to visible wavelength according to Wein's displacement law.

The sun has different temperature in its different parts. It emits radiations in mostly UV, visible and infrared.

Answer from: Quest

An example of environmentally learned behavior is aggressive behavior, i grew up seeing many aggressive people in my life and a slowly started picking up those traits however i was able to call myself out and not give in to those traits.

Answer from: Quest

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

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Which of the following best describes why the sun emits most of its energy in the form of visible li...

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