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Tamiku [17]
3 years ago
6

Which of the following is made up of vibrating electric and magnetic fields

Physics
2 answers:
hichkok12 [17]3 years ago
4 0
A i think
hope it helps!!:)))
igomit [66]3 years ago
3 0

Answer:

A. An electromagnetic wave

Explanation:

A P E X

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An object accelerates at 32 m/s² when a force of 71 N is applied to it. What is the object’s mass? show your work
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Its  answer is 2.21 kg.

Explanation:

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A fixed 11.2-cm-diameter wire coil is perpendicular to a magnetic field 0.53 T pointing up. In 0.10 s , the field is changed to
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Answer:

The average induced emf in the coil is 0.0286 V

Explanation:

Given;

diameter of the wire, d = 11.2 cm = 0.112 m

initial magnetic field, B₁ = 0.53 T

final magnetic field, B₂ = 0.24 T

time of change in magnetic field, t = 0.1 s

The induced emf in the coil is calculated as;

E = A(dB)/dt

where;

A is area of the coil = πr²

r is the radius of the wire coil = 0.112m / 2 = 0.056 m

A = π(0.056)²

A = 0.00985 m²

E = -0.00985(B₂-B₁)/t

E = 0.00985(B₁-B₂)/t

E = 0.00985(0.53 - 0.24)/0.1

E = 0.00985 (0.29)/ 0.1

E = 0.0286 V

Therefore, the average induced emf in the coil is 0.0286 V

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What is the atomic weight of a penny?
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