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dmitriy555 [2]
3 years ago
5

Help me

Physics
1 answer:
mezya [45]3 years ago
4 0
Choose answer C.....
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The layer of leaves that blocks most of the sunlight from reaching the ground in the rain forest is called the _____.
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Substances have internal energy due to the constant, random motion of their particles. This is a kind of kinetic energy that dif
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Explanation:

All substances have characteristic physical and chemical properties. Physical properties are those that can be observed with the senses without changing the identity of the substance. Chemical properties describe how a substance can be changed into a new substance. Physical and chemical properties, such as color, density, boiling point, solubility, conductivity, and flammability, A. are always different between substances. B. depend on the amount of the substance. C. do not depend on the amount of the substance. D. have the same values for all substances.

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A construction worker is carrying a load of 40 kg over his head and is walking at a constant velocity if he travels a distance o
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Answer:

W = 0

Explanation:

We are given with, a construction worker is carrying a load of 40 kg over his head and is walking at a constant velocity. He travels a distance of 50 m.

The work done by an object is given by :

W=Fd

F = ma

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W=mad

m is mass

a is acceleration

d is displacement

The worker is moving with constant velocity, its acceleration will be 0. So, the work done by the worker is 0.

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3 years ago
A 71 kW radio station broadcasts its signal uniformly in all directions. - What is the average intensity of its signal at a dist
marshall27 [118]

Answer:

Explanation:

Energy of signal being radiated per second on all sides = 71 x 10³ J .

At a distance of 220 m it is spread over an area of 4 π x (220)² because it is spreading uniformly on all sides.

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This is the intensity of the signal.

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spayn [35]

Answer:

Heat Transfer

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