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FinnZ [79.3K]
3 years ago
5

Which Variable "Mass Or Speed" Has The Bigger Impact On Kinetic Energy?

Physics
1 answer:
elena55 [62]3 years ago
7 0

A change in speed would have a greater impact on KE than a change in mass would have.

KE is proportional to the SQUARE of the speed.

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Two light bulbs are 2.0 m apart. From what distance can these light bulbs be marginally resolved by a small telescope with a 4.5
andrezito [222]

Answer:

R = 1.2295 10⁵  m

Explanation:

After reading your problem they give us the diameter of the lens d = 4.50 cm = 0.0450 m, therefore if we use the Rayleigh criterion for the resolution in the diffraction phenomenon, we have that the minimum separation occurs in the first minimum of diffraction of one of the bodies m = 1 coincides with the central maximum of the other body

            θ = 1.22 λ / D

where the constant 1.22 leaves the resolution in polar coordinates and D is the lens aperture

             

how angles are measured in radians

          θ = y / R

where y is the separation of the two bodies (bulbs) y = 2 m and R the distance from the bulbs to the lens

            \frac{y}{R} = 1.22 \frac{ \lambda}{D}

            R = \frac{ y \ D}{1.22 \lambda}

let's calculate

            R = \frac{ 2 \ 0.045}{ 1.22 \ 600 \ 10^{-9}}

            R = 1.2295 10⁵  m

3 0
2 years ago
Select the correct answer.
Dahasolnce [82]

Answer:

a is the correct choice

Explanation:

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A stone is thrown horizontally at a speed of 10.0 m/s from the top of a cliff 139.4 m high.
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Explanation:

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