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Dvinal [7]
3 years ago
14

The rate at which light energy is radiated from a source is measured in which of the following units?

Physics
1 answer:
Tamiku [17]3 years ago
6 0
The correct answer is A. Lumen

This is the so called energy of light measurement. Other mentioned measurements are used for different things such as measuring light over an area of space or similar.
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Which of the following is true regarding the Earth's mantle?
Brilliant_brown [7]
B) It’s material moves due to convection currents.
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3 years ago
A clay pot at room temperature is placed in a kiln, and the pot\'s temperature doubles. how much more heat per second is the pot
xeze [42]

Answer:

16

Explanation:

If we treat the pot as a black body, then:

q = σ T⁴ A,

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σ is the Stefan-Boltzmann Constant,

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If the absolute temperature doubles, then q increases by a factor of 2⁴ = 16.

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What happens during the apparent retrograde motion of a planet?
anygoal [31]

Answer:

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Explanation:

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Remember that the planets in the night sky move from west to east, in the case of a planet with retrograde motion, it will move from east to west for a couple of months.

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3 years ago
What angle is formed by the sun, earth, and moon during an eclipse?
Vinvika [58]
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A 2.5m long steel piano wire has a diameter of 0.5cm how great is the tention in the wire if it stretches by 0.45cm when tighten
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