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Tatiana [17]
3 years ago
14

Pers

Physics
1 answer:
DIA [1.3K]3 years ago
7 0

Answer:

2.5 cm

Explanation:

Using the relation :

Refractive index = Real Depth / Apparent depth

Refractive index = 1.6

Real depth = 4cm

Virtual depth = apparent depth = x

1.6 = 4cm / x

1.6x = 4

x = 4 / 1.6

x = 2.5

Hence, virtual depth = 2.5cm

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Rearrange the Coulomb's Law formula to find distance(r)
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<span>Coulomb's law describes the magnitude of the electrostatic force between two electric charges. The Coulomb's law formula is:
  <span>F = Ke * q1 * q2 / r2</span>

Where:
  q1: Charge of object 1
  q2: Charge of object 2
  r: Distance between the two objects
  F: Force between the two objects. A positive force implies a repulsive interaction, while a negative force implies an attractive interaction
  Ke = Coulomb Constant, 8.9875517873681764 * 109 N.m2.C<span>-2
</span>
Coulomb's Law Examples:
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Source- http://www.endmemo.com/physics/coulomb.php




f = k (q^1)(q^2)/r^2

both sides by r^2 Multiply
fr^2/r^2 = kq^3/r^2

both sides by r^2 divide 
f = kq^3/r^2


Answer:
f = kq^3/r^2



Hope this helps!!!!


</span>
6 0
3 years ago
Read 2 more answers
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In future larger telescopes such as Thirty Meter Telescope and EELT will will make it look like a small telescope.

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46.98 kg m/s

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P = mv

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