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xenn [34]
3 years ago
9

Tori applies a force of 20 newtons to move a bookcase with a mass of 40 kg. What

Physics
1 answer:
son4ous [18]3 years ago
5 0

Answer:

Acceleration, a = 0.5m/s²

Explanation:

Given the following data;

Force, f = 20N

Mass = 40kg

To find the acceleration;

Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

F = ma

Where;

F represents force.

m represents the mass of an object.

a represents acceleration.

Making acceleration (a) the subject, we have;

Acceleration (a) = \frac{F}{m}

Substituting into the equation;

Acceleration (a) = \frac{20}{40}

Acceleration, a = 0.5m/s²

Therefore, the acceleration of the bookcase is 0.5m/s²

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Umnica [9.8K]

Answer:

d. It increases numerical aperture and maintains a uniform light speed.

Explanation:

In optical microscopes, various immersion mediums are used to improve or enhance the resolution. Immersion oils like cedar and Leica oils are one of those mediums which are used to improve resolution by increasing the numerical aperture and keeping the speed of light uniform.  

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3 years ago
Resistance independent to : a. Shape b. Size c. Physical state d. None
lesantik [10]

Answer:

d.none

Explanation:

because shape size and physical actually do are dependant

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3 years ago
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what is the major cause of the earth’s magnetic field? the earth’s liquid outer core the earth’s liquid outer core the earth’s m
GaryK [48]

The earth's liquid outer core is the major cause of the earth’s magnetic field.

<h3>What is magnetic field?</h3>

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, a vector field. A force acting on a charge while it travels through a magnetic field is perpendicular to both the charge's motion and the magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets as well as ferromagnetic elements like iron. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, like those utilised in electromagnets, and electric fields that change over time produce magnetic fields that surround magnetised things.

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4 0
2 years ago
When did galileo discover projectile motion?
Tcecarenko [31]
Between 1589-1592 when he discovered projecctile motion
4 0
3 years ago
PLSLPSLLPSLPSLPS HELP I ONLY HAVE 5 MINS PLEASE
UkoKoshka [18]

Answer:

0.19m/s²

Explanation:

Initial velocity(u) = 50×1000/60×60

=13.88 m/s

Final velocity(v) = 36.5×1000/60×60

=10.13 m/s

Acceleration(a) = v-u/t

=10.13-13.88/19.5

a= -0.19m/s²

-a = 0.19m/s²

The magnitude of retar dation is 0.19m/s²

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2 years ago
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