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MissTica
4 years ago
6

A compound microscope operated in near point adjustment comprises an objective lens of focal length 5.0 cm and an eyepiece lens

of focal length 12.0 cm. If the near-point distance is 25.0 cm, and the overall magnification of the microscope is required to be 12.0 x, how far apart must the lenses be placed?
Physics
1 answer:
Eddi Din [679]4 years ago
4 0

Answer:

28.8 cm

Explanation:

Magnification in a microscope is:

M = Mo * Me

Where

Mo: magnification of the objective,

Me: Magnification of the eyepiece.

The magnification of the objective if:

Me = npd/fe

Where:

npd: near point distance

fe: focal length of the eyepiece

The magnification of the objective:

Mo = d/fo

Where

d: the distance between lenses

fo: focal length of the objective

Then

M = npd/fe * d/fo

d = M * fe * fo / npd

d = 12 * 5 * 12 / 25 = 28.8 cm

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Answer:

38,437.5

Explanation:

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Mass(m) = ?

D =m/v

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102.5*375=m

38,437.5=m

therefore Mass = 38,437.5g/ml.

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4 years ago
What are four metals other than iron that can be made to exhibit magnetic properties? Fill in the blank. Every magnet has ______
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Answer:

dimensions of k are  kg / s^2

Explanation:

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6 0
3 years ago
An object of known mass M with speed v0 travels toward a wall. The object collides with it and bounces away from the wall in the
Bingel [31]

Neither side of the equation may be used because there are too many unknown quantities before, during, and after the collision

Explanation:

The impulse theorem states that the change in momentum of an object is equal to the impulse, which is the product between the average force applied and the duration of the collision:

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where

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In this problem, neither side of the equation can be used to measure the change in momentum. In fact:

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Here the final velocity is not known, so it's not possible to use this side of the equation

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here the average force is known, however the duration of the collision is not known, so it's not possible to use this side of the equation.

Learn more about momentum:

brainly.com/question/9484203

#LearnwithBrainly

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4 years ago
Its a newtons law of physics, second law thing. someone help.
vampirchik [111]

Answer:

Its actually the first law of physics is chickens and poop and cows

Explanation:

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