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Varvara68 [4.7K]
3 years ago
8

Why are there zero hours of daylight at the north pole and south pole in the winter

Physics
1 answer:
raketka [301]3 years ago
4 0

Answer:

The seasons are caused by the tilt of Earth's axis in relation to the sun. ... During summer, Antarctica is on the side of Earth tilted toward the sun and is in constant sunlight. In the winter, Antarctica is on the side of Earth tilted away from the sun, causing the continent to be dark.

Explanation:

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3 years ago
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An elevator's electric hoist is rated at 8.0 kW and has an efficiency of 90.0%. The hoist lifts the elevator car, mass 1225 kg,
Nataly_w [17]

Part a)

Power rated on the elevator is given as

P = 8 kW

P = 8 \times 10^3 W

now the mass that is lifted above is given as

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now the potential energy is given as

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t = 13.5 s

so it will take 13.5 s to lift up

Part b)

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so electrical energy used in this process will be 120050 J

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4 years ago
4. The electric force between electric charges is much larger than the
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The electric force is small in comparison because charges are VERY small but the

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3 years ago
A statistic is a(n) __________ that describes groups or samples of objects.
irakobra [83]
The answer is number. The statistic is usually a numerical value that we have obtained through the application of different amthematical algorithms to our datasets. Examples of such algorithms include summary measures, the arithmetic mean, the standard deviation, etc. Statistics are used to give us information about our samples and subgroups, whereas parametrs are numerical values that give us infromation about our population values. 
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3 years ago
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