The direction of current in a solenoid depends on the direction of magnetic field’. Do you agree with this statement? Showthe pa
ttern of magnetic field lines of a solenoid through which a steady current flows. What does the pattern of field lines insidethe solenoid indicate
1 answer:
Answer:
1) Yes the direction of the magnetic field is found based on Fleming's Right Hand Rule
2) The pattern indicates the direction of the magnetic force field lines
Explanation:
1) The solenoid is the is the coil of electric conductor that when it carries an electric current produces a magnetic field
According to Fleming's Right Hand Rule, the direction of the magnetic field produced by a solenoid, depends on the direction of the current such that when the direction of the conventional current is in the direction of the wrapped fingers, the thumb points in the direction of the magnetic field which is North N.
2) The pattern of field lines inside the solenoid indicates the direction of the generated magnetic field moving from left to right within the solenoid as the electric current moves around in the direction shown in the diagram.
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Answer:
minimum number of photon is 4.05 ×
Explanation:
given data
energy = 50 keV = 50 × eV = 50 ×
× 1.602×
J
thickness = 10^-3
contrast = 1%
to find out
number of incident photons
solution
we know here equation that is
E = n × h × ν .......................1
put here all these value
50 × = n × 6.6×
× c/ 1×
50 × × 1.602×
= n × 6.6×
×( 3 ×
/ 1×
)
solve it and find n
n = 4.05 ×
so here minimum number of photon is 4.05 ×
The braking distance is the distance traveled by a car experiencing a braking force until it comes to rest.
Our initial energy is solely kinetic:
And, since the car goes to rest, it is no longer in motion. It will have no kinetic energy.
Therefore, there was work done by the braking force.
Recall the definition of work:
Or in this case, since the displacement and breaking force are antiparallel:
This is equivalent to the dissipation of kinetic energy:
Now, to visualize this, let's rearrange the equation to solve for displacement.
<u>There is a direct, SQUARE relationship between necessary braking distance speed. </u>
If the speed was reduced by 10.3 percent, its new speed is only 89.7% percent of the original, so:
The reduction by a percentage is: