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elena55 [62]
3 years ago
9

Which of these would have the lowest albedo?

Physics
1 answer:
kati45 [8]3 years ago
3 0
All black surfaces is the correct answer
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What does it mean to say that science is a “systematic” process?
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Systematic is just a certain way of doing something. So science being systematic may just refer to the scientific method or how theories are proved in science by repeating the scientific method over and over again.
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3 years ago
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two wires have the same length, but the second has twice the diameter of the first. find the resistance of the second wire if th
djverab [1.8K]

2ω is the resistance of the second wire if the resistance of the first is 4ω if two wires have the same length, but the second has twice the diameter of the first.

R= 4ω.

R = ρl/A

2d=r

R2=2ω

Resistance is the capacity of a conductor to obstruct the passage of an electric current through it. It is controlled by the interaction of the applied voltage and the electric current passing through it.

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1 year ago
An ice skater glides for two meters across ice is work done or no work done
garik1379 [7]
Work is done. work=forcexdisplacement. the ice skater glides 2 meters (displacement), so yes.
5 0
3 years ago
A box is held at rest by two ropes that form 30° angles with the vertical. The tension T in either rope is 42 N. What is the wei
iragen [17]
<h3><u>Answer;</u></h3>

= 73 N

<h3><u>Explanation</u>;</h3>

Using the formula

2 T cos(30°) = w

Where; T is the tension on each string, while w is the weight of the box given by mg

Therefore;

W = 2Tcos 30°

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    = 84 cos 30°

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<u>   ≈ 73 N</u>

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3 years ago
_______ from the mantle rises and flows out through a vent onto Earth's surface as _______. This molten material, sometimes alon
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Magma from the mantle rises and flows out through a vent onto Earth's surface as lava. This molten material, sometimes along with ash, cinders, and rock, builds up a mountain around the vent. The vent and its mountain together are called a sediment.


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