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AleksandrR [38]
3 years ago
15

Which two statements are true?

Physics
2 answers:
Orlov [11]3 years ago
8 0
<span>B) Electric forces and magnetic forces are different aspects of a single electromagnetic force. 
C) The operation of a motor depends on the relationship between electric and magnetic forces. hope this helps

</span>
andrezito [222]3 years ago
3 0

Answer: The true statements are "the operation of a motor depends on the relationship between electric and magnetic forces" and "Electric forces and magnetic forces are different aspects of a single electromagnetic force.".

Explanation:

The electric force is due to the forces acting between the charges. The magnetic force is the force exerted between the magnets or moving charged particles.

The electromagnetic force is created by the magnetic field and the electric field.

The magnetic force is related to the electric force. These forces are different aspects of single electromagnetic force. The moving charge produce the magnetic force. The moving magnet produce the electric forces. The interplay of electric field and the magnetic force is the basis for motor.

Motor converts the electrical energy into mechanical energy. The operation of a motor depends on the relationship between electric and magnetic forces.

Therefore, the true statements are "the operation of a motor depends on the relationship between electric and magnetic forces" and "Electric forces and magnetic forces are different aspects of a single electromagnetic force.".

     

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I hope the answer will help you. 
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3 years ago
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An electron with a velocity of 10^7 m/s enter into a region of magnetic flux density of 0.10T,the angle between the direction of
wolverine [178]

Answer:

F = q v B sin Θ       describes force on the electron

F = m v^2 / R          describes force required to keep electron in circular path

q v B sin Θ = m v^2 / R

R = m v / (q B sin Θ)

R = 9.1E-31 * 1E7 / (.1 * 1.6E-19 * .423)

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2 years ago
A metal ring 4.00 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpend
liq [111]

Answer:

a) 0.21N/C

b) counterclockwise

Explanation:

a) to find the magnitude of the electric field you can use the following formula:

\int Eds=-\frac{\Delta \Phi_B}{\Delta t}=-\frac{\Delta AB}{\Delta t}

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E: electric field

Ф_B: magnetic flux

In the line integral you can assume E as constant. Furthermore, you calculate the change in the magnetic flux by taking into account that the time interval is 1.12/0.21=5.33s. By replacing in the formula you obtain:

\frac{\Delta \Phi_B}{\Delta t}=\frac{A(B_f-B_i)}{5.33s}=\frac{\pi(0.04m)^2(1.12T)}{5.33}=1.056*10^{-3}W/s

E\int ds=E(2\pi r)=1.056*10^{-3}W/s\\\\E=\frac{1.056*10^{-3}W/s}{\pi(0.04m)^2}=0.21\frac{N}{C}

the magnitude if the induced electric field is 0.21N/C

b) By the Lenz's law you can conclude that the current has a direction in a counterclockwise

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Verizon [17]

Answer:

how the areas are at

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The tilt of the Earth's AXIS is the most important reason why seasons occur... The area depends why there's  a certain differnt season on differnt areas , its because one area is closet to the sun which mostky they get summer full time (like a normal year), but  Alaska,it just winter , the reason why Alaska is just cold because its not close to the sun.

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kirill115 [55]
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4 years ago
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