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2 years ago

7

On which date does the antarctic circle have 24 hours of daylight

2 answers:

Airida [17]2 years ago

6 0

Answer:

21st of December

Explanation:

In the northern hemisphere there occurs winter solstice on 21st of December. During this time, the tilt of the earth in the northern hemisphere is away from the sun. So the places near and at Antarctica, there will be sunlight for about 24 hours and the sun does not set on this particular day.

And, on the other hand, the places near the Arctic circle experiences darkness for about 24 hours and the sun does not rise on this specific day.

amm18122 years ago

6 0

Answer:

21st of December

Explanation:

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Which metals can be extracted from following ores (i) Argentite (ii) Haematite (iii) Chalcopyrite (iv) Bauxite

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<h2>Answer </h2>

<h3>1) iron </h3>

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2 years ago

Read 2 more answers

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Arturiano [62]

A) 8.11 m/s

For a satellite orbiting around an asteroid, the centripetal force is provided by the gravitational attraction between the satellite and the asteroid:

$m\frac{v^2}{(R+h)}=\frac{GMm}{(R+h)^2}$

where

m is the satellite's mass

v is the speed

R is the radius of the asteroide

h is the altitude of the satellite

G is the gravitational constant

M is the mass of the asteroid

Solving the equation for v, we find

$v=\sqrt{\frac{GM}{R+h}}$

where:

$G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2}$

$M=1.40\cdot 10^{16}kg$

$R=8.20 km=8200 m$

$h=6.00 km = 6000 m$

Substituting into the formula,

$v=\sqrt{\frac{(6.67\cdot 10^{-11})(1.40\cdot 10^{16}kg)}{8200 m+6000 m}}=8.11 m/s$

B) 11.47 m/s

The escape speed of an object from the surface of a planet/asteroid is given by

$v=\sqrt{\frac{2GM}{R+h}}$

where:

$G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2}$

$M=1.40\cdot 10^{16}kg$

$R=8.20 km=8200 m$

$h=6.00 km = 6000 m$

Substituting into the formula, we find:

$v=\sqrt{\frac{2(6.67\cdot 10^{-11})(1.40\cdot 10^{16}kg)}{8200 m+6000 m}}=11.47 m/s$

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Answer:

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Explanation:

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2 years ago

Many people love roller coasters. Some people call them scream machines. They agree that riding a roller coaster is a thrilling

Digiron [165]

Answer:

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Explanation:

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For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor

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Answer:

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