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brilliants [131]
2 years ago
9

Help on these 2 pls ASAP!!!!!! BTW ITS A SCI QUESTION

Physics
2 answers:
Ymorist [56]2 years ago
6 0
First one is unbalanced force
kenny6666 [7]2 years ago
3 0

Answer:

Net force

I think it’s balanced force

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zmey [24]

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reversing the current

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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
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to find the value of f, do cross multiplication
1*96 = f * 25
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3.84 = f

The focal length of the project lens is 3.84 inches 

4 0
2 years ago
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b

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Scilla [17]

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