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Mariulka [41]
2 years ago
7

In Converging and Diverging lenses all real images are

Physics
2 answers:
AlladinOne [14]2 years ago
5 0
B.......................
AnnZ [28]2 years ago
4 0
Answer:

B

Hope it helps
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F all of the energy in a falling object's gravitational potential energy store is transferred to its kinetic energy store by the
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Answer:

The options are not shown, so let's derive the relationship.

For an object that is at a height H above the ground, and is not moving, the potential energy will be:

U = m*g*H

where m is the mass of the object, and g is the gravitational acceleration.

Now, the kinetic energy of an object can be written as:

K = (1/2)*m*v^2

where v is the velocity.

Now, when we drop the object, the potential energy begins to transform into kinetic energy, and by the conservation of the energy, by the moment that H is equal to zero (So the potential energy is zero) all the initial potential energy must now be converted into kinetic energy.

Uinitial = Kfinal.

m*g*H = (1/2)*m*v^2

v^2 = 2*g*H

v = √(2*g*H)

So we expressed the final velocity (the velocity at which the object impacts the ground) in terms of the height, H.

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A

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A force of 99 N causes a box to accelerate at a rate of 12 m/s2. What is the mass of the box?
ira [324]


m = F/a

m = 99/11 = 9

The answer is 9 Kg

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The water is reflecting light, Is this specular or diffuse reflection? explain your answer​
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Which explicit definition matches this sequence? an={10,if n=1an−1−4,if n>1 A. an = 10 + 4(n – 1) B. an = 10 – 4(n – 1) C. an
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Añ=10+4(n-1)

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