Answer:
-3.5 m/s²
Explanation:
- Initial Velocity = 21m /s
- Final velocity = 0m/s
- Distance = 63 m .
- Acclⁿ = ?
<u>We </u><u>know</u><u> </u><u>that</u><u> </u><u>:</u><u>-</u><u> </u>
Stopping distance = u²/2(-a)
63m = (21m/s)² / -2a
a = - 21 * 21 / 63 * 2 m/s²
a = - 3.5 m/s²
<em>*</em><em>*</em><em>Edits</em><em> </em><em>are</em><em> </em><em>welcomed</em><em>*</em><em>*</em>
The correct answer that you are looking for would be B: The layers of the Earth increase in density as one moves toward the center of the Earth.
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Answer:
Distance of the second child from the pivot point will be 2.66 m
Explanation:
We have given mass of the first child
Distance from the pivot point
Mass of the second child
We have to find the distance of the second child from the pivot point
For this we have to balance the moment
So
So the distance of the second child from the pivot point point will be 2.66 m
Answer:
f1 / f2 = n2 / n1
Explanation:
To solve this problem, we should remember that the formula for index of refraction is defined as:
n = c / v
or
n v = c
Where,
n = index of refraction
c = speed of light
v = speed of light in the medium
Since speed of light is constant, then we can simply equate the materials 1 and 2:
n1 v1 = n2 v2
Where the speed of light in the medium (v) can be expressed as:
v = w * f
Where,
w = wavelength of light
f = frequency of light
Therefore substituting this back into the relating equation:
n1 w1 f1 = n1 w2 f1
Since it is given that the light is monochromatic, w1 = w2, this further simplifies the equation to:
n1 f1 = n2 f2
f1 / f2 = n2 / n1 (ANSWER)
A waxing gibbous because it looks like a waxing gibbous and it is