3 years ago

True or False: Exercise is an underrated stress reliever and can be used to 25

Physics

2 answers:

Andreyy893 years ago

5 0

Answer:

I think it is true I'm not saying it is but if you get another person who says its true say true

Explanation:

uranmaximum [27]3 years ago

3 0

I believe the answer is true

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What’s the weight of a box w/ a mass of 150kg on earth?

Orlov [11]

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2 years ago

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A machinist with normal vision has a near point at 25 cm. The machinist wears eyeglasses in order to do close work. The power of

Alik [6]

Answer:

17.4 cm

Explanation:

Power of lens = +1.75 diopters

Focal length of lens

$f=\frac{100}{1.75}=\frac{400}{7}$

This is a convex lens as focal the diopter given is positive which makes the focal length positive. Image distance will be negative.

v = -25

$\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\\\Rightarrow \frac{1}{-25}-\frac{1}{u}=\frac{1}{\frac{400}{7}}\\\Rightarrow -\frac{1}{u}=\frac{7}{400}+\frac{1}{25}\\\Rightarrow \frac{1}{u}=-\frac{7}{400}-\frac{1}{25}\\\Rightarrow \frac{1}{u}=-0.0575\\\Rightarrow u=-17.4\ cm$