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Zanzabum
3 years ago
8

Describe kepler's contribution to the current structure of the solar system.

Physics
1 answer:
notka56 [123]3 years ago
7 0
Kepler used mathematics to determine the paths of planets around the sun
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Answer:

not sure 5

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2 years ago
For the image of the overhead projector to be in focus, the distance from the projector lens to the image, <img src="https://tex
rjkz [21]
Given:
distance from the projector lens to the image, di
projector lens focal length, f
distance from the transparency to the projector lens, do

thin lens equation: 1/f = 1/di + 1/do
do = 4 inches
di = 8 feet

convert feet to inches, for uniformity.
1 foot = 12 inches
8 feet * 12 inches/ft = 96 inches
 
1/f = 1/96 inches + 1/4 inches

Adding fractions, denominator must be the same.

1/f = (1/96 * 1/1) + (1/4 * 24/24)
1/f = 1/96 + 24/96
1/f = 25/96

to find the value of f, do cross multiplication
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96/25 = f
3.84 = f

The focal length of the project lens is 3.84 inches 

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Vikki [24]
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uysha [10]

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Explanation:

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The manufacturer of a bulletproof vest wants the vest to be able to stop a bullet with a mass of 0.4 kg and a velocity of 1800 m
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