4 years ago

How do polar bears use albedo to survive

1 answer:

4 0

They rely on albedo (it’s the fraction of solar energy, which is short-wave, that’s reflected from the Earth back into space, it’s how ‘reflective’ the Earth’s surface is) to reflect a lot because if it doesn't the ice caps will melt and polar bears will lose their home

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1. On which date does the Antarctic Circle have 24 hours of daylight? A. June 21

sattari [20]

The date in which the Antarctic Circle has 24 hours of daylight on December 21st every year. When energy is transferred to air the particles of air become more excited and move around faster.

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4 years ago

Read 2 more answers

Two point charges are separated by a certain distance. How does the strength of the electric field produced by the first charge,

olga55 [171]

Answer:

The field will remain the same

Explanation:

This is because electric field given as

E1= kq1/r²

And that of second charge

E² = kq2/r²

Is not affected by the size of the second charge q2

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3 years ago

A vector isr⇀= 78.0 m iˆ+278 m jˆ. What is the direction of this vector?

Ksivusya [100]

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3 years ago

2. Find the velocity when the displacement is 40 m and the time is 5 s.

LenKa [72]

Answer:

V=?

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V=S/t

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3 0

3 years ago

A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 40.0-gram mass is attached at the 14.0-cm

sukhopar [10]

Answer:

103 g

Explanation:

given that

Mass of the attached mass, m = 40 g

Initial distance of balance, x1 = 49.7 cm = 0.497 m

Final distance of balance, x2 = 39.2 cm = 0.392 m

Equilibrium point of attachment, x3 = 14 cm = 0.14 m

To get the mass of the meter stick, we use the relation

M = m.[(x2 - x3) / (x1 - x2)]

And on solving in full, we gave

M = 40.[(0.392 - 0.14) / [0.497 - 0.392)]

M = 40(0.258 / 0.105)

M = 40 * 2.457

M = 102.8 g

Therefore the needed work good for mass of the stick j

Is 103 g

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3 years ago