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iragen [17]
3 years ago
8

To protect a material from the influence of an external magnetic field, the material should be kept in?

Physics
1 answer:
Evgen [1.6K]3 years ago
5 0

To protect a material from the influence of an external magnetic field, the material should be kept in soft iron ring.

So the correct answer is A.

Hope this helps,

Davinia.

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Is mass on a ramp related to acceleration?
Verdich [7]
Yes it may or may not be depending  on the angle of the ramp. But if nothing is specified then it must be related to acceleration as friction is neglected.
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3 years ago
A point charge gives rise to an electric field with magnitude 2 N/C at a distance of 4 m. If the distance is increased to 20 m,
worty [1.4K]

Answer:

0.08 N/C

Explanation:

Electric Field: This is defined as the force per unit charge exerted at a point. The expression for electric field is given as,

E = Kq/r².............................. Equation 1

Where E = Electric Field, q = Charge, k = proportionality constant, r = distance.

making q the subject of the equation,

q = Er²/k............................... Equation 2

Given: E = 2 N/C, r = 4 m,

Substitute into equation 2

q = 2(4)²/k

q = 32/k C.

When r is increased to 20 m,

E = k(32/k)/20²

E = 32/400

E = 0.08 N/C.

Hence the electric Field = 0.08 N/C

5 0
4 years ago
Robert dropped his new iPhone from his balcony. It hit the ground 3.5 seconds later. What was the height of his balcony?
Lorico [155]

its B. 60 meters

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cause I looked up a calculator and solved it

8 0
3 years ago
Which mountains are<br> YOUNGEST?
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3 0
3 years ago
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Consider the diagram for the following questions.
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