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scZoUnD [109]
3 years ago
6

The sun continuously radiates energy into space in all directions. Some of the sun's energy is intercepted by the Earth. The ave

rage temperature of the surface of the Earth remains a little above 300 k. Why doesn't the Earth's temperature rise as it intercepts the sun's energy?
A. The Earth reflects the sun's light.

B. The Earth radiates an amount of energy into space equal to the amount it receives.

C. The energy only raises the temperature of the upper atmosphere and never reaches the surface.

D. The thermal conductivity of the Earth is low.

E. The heat is carried away from the Earth by convection currents.
Physics
1 answer:
8_murik_8 [283]3 years ago
7 0

B. The Earth radiates an amount of energy into space equal to the amount it receives.

Part of the solar energy is reflected by the Earth into space, this is known as albedo. The other part of the energy radiated by the Earth in the form of infrared radiation, is absorbed by the greenhouse gases, which cause most of this infrared radiation to be emitted into space. Therefore, the net flow of energy is zero.

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Answer:

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6 0
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To measure the height of a building without a ruler or tape measure, an engineer drops a rock off the top of the building and fi
serg [7]

The relevant equation we can use in this problem is:

h = v0 t + 0.5 g t^2

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Since it was stated that the rock was drop, so it was free fall and v0 = 0, therefore:

h = 0 + 0.5 * 9.81 m/s^2 * (4.9 s)^2

<span>h = 117.77 m</span>

6 0
3 years ago
Homework help?
bogdanovich [222]
C. unbalanced is the correct answer for newton's first law.
8 0
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Is a process that modifies light waves so they vibrate in a single plane
madam [21]

The process you're fishing for is "polarization", but that's a

misleading description.

Polarization doesn't do anything to change the light waves. 

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The intensity of a light beam is always reduced after

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A laser light source may be thought of as an exception,

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8 0
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If there is no gravity what will happen to earth?
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Wouldn't everything fall?
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