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nordsb [41]
3 years ago
10

For each of the following statements determine whether it is correct or incorrect.

Physics
1 answer:
Mrac [35]3 years ago
7 0

Answer:

a) T; b) F; c) F; d) T; e) T; f) T

Explanation:

a) True, since the equation of work done on a spring is \frac{kx^2}{2}

b) False, it will be only mgh.

c) False, since it is mv^2, no direction involved.

d) True, since the measured speed of objects depends from the reference frame of the observer.

e) True, since its formula is mv^2 and both terms are positive.

f) True, since the centripetal force the Earth feels, which is the gravitational atraction the Sun exerts, is perpendicular to its circular trajectory.

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If the solar system shrank so that the sun were located just one centimeter from Earth, about how far away could you find the ne
DedPeter [7]
E                  S                                                               *

The "E" represents Earth, "S" represent Sun, and the "*" represents the nearest star(which is Proxima Centauri).

The main thing to worry about here is units, so ill label everything out.
D'e,s'(Distance between earth and sun) = .<span>00001581 light years
D'e,*'(Distance between earth and Proxima) = </span><span>4.243 light years

Now this is where it gets fun, we need to put all the light years into centimeters.(theres alot)
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To convert we multiply the light years we found by the big number.
D'e,s'(Distance between earth and sun) = 1.496 * 10^13 centimeters<span>
D'e,*'(Distance between earth and Proxima) = </span><span>4.014 * 10^18 centimeters
</span>
Now we scale things down, we treat 1.496 * 10^13 centimeters as a SINGLE centimeter, because that's the distance between the earth and the sun. So all we have to do is divide (4.014 * 10^18 ) by (<span>1.496 * 10^13 ).
Why? because that how proportions work.

As a result, you get a mere 268335.7 centimeters.

To put that into perspective, that's only about 1.7 miles

A lot of my numbers came from google, so they are estimations and are not perfect, but its hard to be on really large scales.</span>
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The correct option will be
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The pH scale was invented by Svante Arrhenius is false.

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Answer: Energy from the core travels by radiation through the radiative

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