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icang [17]
3 years ago
14

State three factors that determine the strength of electromagnetic​

Physics
2 answers:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.Nov 28, 2020

Explanation:

sp2606 [1]3 years ago
6 0
The number of turns of wire on the core and the shape and size of the core.
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Consider a concave spherical mirr or that has focal length f = +19.5 cm.
lidiya [134]

The distance of an object from the mirror's vertex if the image is real and has the same height as the object is 39 cm.

<h3>What is concave mirror?</h3>

A concave mirror has a reflective surface that is curved inward and away from the light source.

Concave mirrors reflect light inward to one focal point and it usually form real and virtual images.

<h3>Object distance of the concave mirror</h3>

Apply mirrors formula as shown below;

1/f = 1/v + 1/u

where;

  • f is the focal length of the mirror
  • v is the object distance
  • u is the image distance

when image height = object height, magnification = 1

u/v = 1

v = u

Substitute the given parameters and solve for the distance of the object from the mirror's vertex

1/f = 1/v + 1/v

1/f = 2/v

v = 2f

v = 2(19.5 cm)

v = 39 cm

Thus, the distance of an object from the mirror's vertex if the image is real and has the same height as the object is 39 cm.

Learn more about concave mirror here: brainly.com/question/27841226

#SPJ1

7 0
2 years ago
Please help
iVinArrow [24]
Answer is 4,400,000 kg • m/s
4 0
3 years ago
Answer me nowwwwwwww
qwelly [4]

Answer:

volume

Explanation:

it depends on the volume of the items

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When a pair of 10-n forces act on a box of candy, the net force on the box is?
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Any of the above depending on the direction of forces
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The inner solar system contains the
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Jovian planets and  dwarf planets like pluto are in the outer part of our solar system. so, terrestrial planets ,which means earth like planets, live in the inner part of our solar system. or B. is the answer
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