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sergey [27]
3 years ago
6

The field of a solenoid is most like the field of a: long, straight wire single bar magnet horseshoe magnet single pole

Physics
2 answers:
dimulka [17.4K]3 years ago
8 0

Answer:

Single bar magnet

Explanation:

As we know that magnetic field of solenoid inside the solenoid is strong and given by formula

B = \frac{\mu_0 N i}{L}

here we know

L = length of solenoid

i = current in the coil

now as we observe the field outside the solenoid the magnetic field will start decreasing as we go far away from the end.

so strength of magnetic field will be more near the end and start decreasing as we move away from it

this all characteristics are similar to the magnetic field of a bar magnet

so this solenoid is similar to a bar magnet

user100 [1]3 years ago
4 0
The outside magnetic field of a solenoid is similar to that of a bar magnet even though the inside field is strong and uniform.
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What force would be required to accelerate a 1,100kg car to 0.5 m/s2
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the force required to accelerate a 1,100kg car is 550N

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Two cars are initially separated by 2500 m and traveling towards each other. One car travels at 4.5 m/s and the second car trave
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Answer:

714.285s

Explanation:

use relative velocity

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7 0
3 years ago
Which of the following statements are true at some time during the course of the motion? Check all that apply. Check all that ap
eduard

Answer:

The object can have zero velocity and, simultaneously, nonzero acceleration.

The object can have zero acceleration and, simultaneously, nonzero velocity.

The object can have nonzero velocity and nonzero acceleration simultaneously.

Explanation:

An object in simple harmonic motion has a total mechanical energy (sum of elastic potential energy and kinetic energy) that is constant:

E=U+K=1/2kx^2 + 1/2}mv^2

where,

k is equal to the spring constant

x is equal to the displacement

m is the mass

v is the speed

We can note that the force on the spring is given by Hook's law:

F=-kx

In Newton's law F = ma, this can be also be written as

ma=-kx

a=-k/mx

This implies that the acceleration is proportional to the displacement.

From the first equation, we can now states that:

When the displacement is zero, x=0, the acceleration is zero, a=0, and the velocity is maximum

When the velocity is zero, v=0, the acceleration is maximum, which occurs when the displacement is maximum

In all the other intermediate situations, both velocity and acceleration are nonzero.

So the correct answers are

The object can have zero acceleration and, simultaneously, nonzero velocity.

The object can have nonzero velocity and nonzero acceleration simultaneously.

The object can have zero velocity and, simultaneously, nonzero acceleration.

4 0
3 years ago
Read 2 more answers
Init.
nikklg [1K]

Answer:

The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 when expressed in the unit J⋅s, which is equal to kg⋅m2⋅s−1, where the metre and the second are defined in terms of c and ΔνCs.

8 0
3 years ago
Read 2 more answers
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