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larisa86 [58]
3 years ago
8

When we get out of the bed on a very cold morning, we feel that the air of the room is cold. But when we come back after staying

out for some time, we feel that the air of the same room is warmer. Why is this?
Physics
1 answer:
S_A_V [24]3 years ago
4 0

Answer:

This is because the air outside is always cooler than the air inside, so after staying outside your body adapts to the cold air, when you come back inside, the cold air is still in you which makes the room seem warmer.

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When a simple magnifying glass is used properly, the image will be formed
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Magnifying glasses typically use a value of 0.25 meters, or 250 millimeters, distance. This means that that D is the correct answer and the image will be formed approximately D. 250 millimeters in front of the lens

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3 years ago
Two identical carts are free to move along a straight frictionless track. At time t1, cart X is moving at 2.0 m/s when it collid
jarptica [38.1K]

Answer:

Explanation:

Using the law of conservation of momentum;

m_1 u_1+m_2u_2 = m_1v_1+m_2v_2

here;

There is a need for conservation of the total momentum that occurred before and after the collision.

So;

m_1 = mass of cart X

m_2 = mas 9f cart Y

u_1 = velocity of cart X (before collision)

u_2 = velocity of cart Y (before collision)

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So;

m(u_1+0) =(m_1v+m_2)v

because the mass is identical and v represents the velocity of both carts.

Now;

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m(2) = (2m)v

v = 1 m/s

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8 0
3 years ago
What is the best explanation for the observation that the electric charge on the stem became positive as the charged bee approac
topjm [15]

Answer:

Option B seems to be the appropriate choice,

Explanation:

The given question is incomplete. Please find the attachment of the complete question.

  • From either the principle or law of the Coulombs, there would have been either pressure (force) through attachment or repulsion amongst charges.  
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As a consequence, the vegetation is electric current polarized because as activated bee pursued.

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The answer is a. endothermic.
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And even if you don't know the answer, you can exclude all other answers by scientific logic and you will be left with the correct answer.

Hope this helps.
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3 years ago
The earth's interior heat and pressure drive a process of heat transfer in the mantle called _____.
Galina-37 [17]
Convection. It is the transfer of heat by the circulation and movement of the molecules that come from liquid or gas.
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3 years ago
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