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Lunna [17]
2 years ago
5

-

Physics
2 answers:
Oksanka [162]2 years ago
5 0
Thats the answer second one
jenyasd209 [6]2 years ago
3 0
The answer will be B
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A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is 4.4. What is the m
patriot [66]

Answer:

m = \frac{-4.4}{7.4}

Explanation:

magnification is the ratio of distance of image to distance of object

i.e. m = -\frac{d_i}{d_o}

d_i = -4.4 d_o

As per the lens equation,

\frac{1}{d_o} + \frac{1}{d_i} = \frac{1}{f}

We will calculate the focal length of the mirror

\frac{1}{yd_o} + \frac{1}{-4.4d_o} = \frac{1}{f} \\\frac{4.4 -1}{4.4} \frac{1}{d_o} =  \frac{1}{f}\\f = \frac{4.4}{3.4}  d_o

Now for convex mirror only the sign will change

Thus, focal length would be equal to

f = - \frac{4.4}{3.4} d_o

Plugging this value into lens equation, we get

\frac{1}{d_o} + \frac{1}{d_i} = \frac{1}{f} \\\frac{1}{d_o} + \frac{1}{d_i} = \frac{-3.4}{4.4} \frac{1}{d_o} \\\frac{7.4}{4.4} \frac{1}{d_o} = \frac{1}{d_i}\\\frac{d_i}{d_o} = \frac{4.4}{7.4} \\m =-  \frac{d_i}{d_o} \\\\m = - \frac{4.4}{7.4}

8 0
3 years ago
PLEASE HELP ASAP!! DUE IN AN HOUR :’))!!
miskamm [114]

Answer: The object moves with constant velocity

Explanation:

In this velocity vs time graph we're dealing with Ap physics or regents physics. If we look at the slope we can see it is constant or not changing. Even so lets check the other answers and prove them wrong

The objects speed increases: This is wrong because the line shows a steady 5m/s with no change

The object is in free fall: If the object was in freefall the speed would be increasing as a result of acceleration due to gravity

The object moves with a constant speed: This seems to be the case since the slope or line doesn't change at all

The object stays at rest: Can't be right because the object is at a speed of 5m/s so we know its moving at least

The objects speed decreases: Again the line isn't going up or down so we can't say speed increases or decreases

4 0
2 years ago
How do simple machines make it easier to move an object?
natima [27]

Answer:

by Multiply Force,change direction and speed multiply

5 0
2 years ago
Suppose a scientist doing an experiment in nuclear fusion starts out with twelve atoms. How many atoms will most likely result f
ddd [48]
<span>So we wan't to know what happens during nuclear fusion where we have 12 atoms. Nuclear fusion is a nuclear process where 2 or more nuclei will form 1 or more different nuclei with a release of energy. So if we start with 12 atoms, the most likely result will be 6 atoms. </span>
3 0
3 years ago
Read 2 more answers
Write about Archimedes principle​
Schach [20]

Answer:

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces. Archimedes' principle is a law of physics fundamental to fluid mechanics.

8 0
2 years ago
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