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Greeley [361]
3 years ago
15

If Mary is 3m from her reflection, how far is mary from the mirror?

Physics
1 answer:
Dima020 [189]3 years ago
7 0

Answer:

3m duh

Explanation:

because if she's 3m from her reflection she's obviously 3m away from the mirror

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Please help! 50 points and brainliest to first correct answer!
sergiy2304 [10]

No. The companion is wrong.

You are shivering because, since it's cold outside, your body is becoming incapable of maintaining the the same temperature outside ad well as inside.

So, in order to compensate, your body uses mechanism of shivering in order to produce more heat by constricting the blood flow in vessels.

Therefore, you shiver from cold.

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2 years ago
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Examine the graph. Select the statement that best describes the energy change in the particles of a substance during melting.
serg [7]

Answer:

B)  Absorbed energy results in the change in potential energy.

Explanation:

i got it wrong on usatestpreo

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3 years ago
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Review 1: A plane is located x = 40 miles (horizontally) away from an airport at an altitude of h miles. Radar at the airport de
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Explanation:

Let h is the height of the plane above ground. x is the horizontal distance between the ground and the airport. Let s(t) is the distance between the plane and the airport. So,

s(t)^2={h^2+x^2}...........(1)

Given, h = 4, x = 40 and s(t) = -20 mph

Differentiate equation (1) wrt t

2s(t)s'(t)=2x(t)x'(t)

x'(t)=\dfrac{s(t)s'(t)}{x(t)}

When x = 40, s(t)=\sqrt{40^2+4^2}=40.19\ m

x'(t)=\dfrac{-240s(t)}{x(t)}

x'(t)=\dfrac{-240\times 40.19}{40}

x'(t)=-241.14\ m/s

So, the speed of the airplane is 241.14  m/s. Hence, this is the required solution.

8 0
3 years ago
Your friends sit in a sled in the snow. If you apply a force pf 75 N to them, they have an acceleration of 0.9 m/s ^ 2. What is
Elza [17]

Answer:

Mass of the sled in the snow 83.33 kg.

<u>Explanation</u>:

Given that,  

Force applied to move the sled in the snow (F) = 75N

\text { Acceleration }(a)=0.9 \mathrm{m} / \mathrm{s}^{2}

We know that

Newton's second law of motion is  

\text { Force }=\text { mass } \times \text { acceleration }

F = ma (Or "force" is equal to "mass" times "acceleration".)

So if we move this around we can isolate mass and get mass

\text { Mass }=\frac{\text { force }}{\text { accelearation }}

\mathrm{M}=\frac{75}{0.9}

M = 83.33 kg

Mass of the sled in the snow <u>83.33 kg.</u>

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3 years ago
____________ is an out made when a base runner, forced to run because another teammate must run to the base being occupied, cann
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If I knew the answer I would help but I don’t know sorry
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