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Anuta_ua [19.1K]
3 years ago
8

Which forces include attractive and repulsive interactions? A. electric and magnetic forces B. static friction and air resistanc

e C.rolling friction and fluid friction D. gravitational and spring forces
Physics
2 answers:
Ivahew [28]3 years ago
5 0

Answer: A. electric and magnetic forces

Explanation:

  • Magnetic force acts between two magnetic objects. A magnet has two poles- North pole and South pole. Like poles repel each other and unlike poles attract each other.
  • Electric force acts between two charged objects. Two similarly charged bodies have repulsive force between them and attractive force exists between two dissimilar charged objects.

Thus, an electric force and magnetic force are repulsive and attractive in nature.

saul85 [17]3 years ago
3 0
The answer is : A



i hoped this helped and have a wonderful day!!


:)
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A wildlife photographer uses a moderate telephoto lens of focal length 135 mm and maximum aperture f/4.00 to photograph a bear t
labwork [276]

Answer:

<h3>(A) The width x = 0.24 \times 10^{-3} m</h3><h3>(B) The new width is 1.32 \times 10^{-3} m</h3>

Explanation:

Given :

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Maximum aperture D = \frac{f}{4}

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(A)

From rayleigh criterion,

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  \theta =\frac{ 1.22 \times 550 \times 10^{-9}  }{33.75 \times 10^{-3} }

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(B)

We know that \theta is proportional to the x and inversely proportional to the D

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   x = 0.24 \times  10^{-3}  \times \frac{22}{4}

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6 0
3 years ago
What’s the difference between applied and pure research
Ket [755]

Answer:

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8 0
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The given statement is a True statement

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A constant magnetic flux through a closed loop of wire induces an emf in that loop. True or false?
miskamm [114]

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