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N76 [4]
4 years ago
5

A lever with an output arm of 0.8 meter has a mechanical advantage of 6. What is the length of the input

Physics
1 answer:
Novosadov [1.4K]4 years ago
4 0
From the law of the lever: 

<span>mechanical advantage= input arm : output arm

input arm- a
output arm-b
</span>mechanical\ advantage= 6\\\\&#10;6=\frac{a}{0,8}\ \ |*0,8\\\\&#10;6*0,8=a\\\\&#10;a=4,8m&#10;&#10;
<span>Input arm is equal 4,8m</span>
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Calculate the diffraction limit of the human eye, assuming a wide-open pupil so that your eye acts like a lens with diameter 0.8
guapka [62]
Hi, thank you for posting your question here at Brainly.

This problem could be solved using this equation:

Diffraction limit = 1.22*wavelength/diameter

diameter = 0.8 cm = 0.008 m
wavelength = 500E-9 m

Diffraction limit = 1.22(500E-9)/0.008
Diffraction limit = 0.00007625
6 0
3 years ago
You have a 35X objective lens in place, and the numerical aperture of the objective lens is 0.75. The numerical aperture of the
olasank [31]

Answer:

350x

Explanation:

In a microscope the objective has higher magnification than the eyepiece so, this is a microscope

The magnification of a microscope is given by the product of the magnifications of the eyepiece and and the objective.

Objective lens magnification = 35x =m_o

Eyepiece magnification = 10x =m_e

Total magnification

M=m_o\times m_e\\\Rightarrow M=35\times 10\\\Rightarrow M=350

Total magnification is 350x

8 0
4 years ago
What can increase the gravitational potential energy of a object
love history [14]

Answer:

Increase in mass and height

Explanation:

The gravitational potential energy of an object can increase if the mass and height of object is increased.

Gravitational potential energy is the energy due to the position of a body.

It is expressed as:

  Gravitational potential energy = mass x acceleration due gravity x height

Increasing mass and height will cause an increase in gravitational potential energy.

6 0
3 years ago
Find the net force on q3. Include the<br> direction (+ or -).<br> (Unit = N) PLS HELP!
NNADVOKAT [17]

Answer:

Explanation:

First of all we shall find out net  electric field at q₃ due to both of the remaining charges .

electric field due to charge Q = k Q / r² where k = 9 x 10⁹ Q is amount of charge and r is distance of point

electric field due to charge 105 x 10⁻⁶ C

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It will act away from q₂

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= 9 x 10⁹ x 53 x 10⁻⁶ /( .5+.95)²

= 0.227  x 10⁶ N/C  .

It will act towards   q₁

These fields are in opposite direction so

net field E = 0.82 x 10⁶ N/C.

It will act away from  q₂ .

Force on q₃ due to net field

= q₃ E

= 88 x 10⁻⁶ x 0.82 x 10⁶

= 72.16 N

The direction of this field will be towards q₂ because force on negative charge in a field is always in a direction opposite to the direction of the field.

8 0
3 years ago
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Fynjy0 [20]
A beta particle followed by another beta particle. Consider it beta positive decay in which a proton decays to form a neutron,positron and electron neutrino.
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