Hope this helps you.
(a) Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.500-μC charge and flies due west at a spee
1 answer:
Answer:
(a) Magnitude of Magnetic force on jet will be 2.64 × N and direction will be towards South.
(b) The value obtained in part (a) will have negligible effect.
Explanation:
(a) The magnetic force acting on a moving charge is given by :-
<em /><em> = q ( </em>
<em>)</em>
So, magnitude of Force will be:-
F = 0.5 × × ( 660 × 8 ×
) × sin (90⁰)
= 2.64 × N.
And direction can be found out using Right Hand Thumb Rule.
It comes out to be towards South.
(b) The gravitational force acting on the jet is massive as the mass of jet is very large. Compared to that, the value obtained above is negligible.
If the jet can overcome gravitational force and fly, the magnetic force will have negligible effect.
You might be interested in
Answer:
Yes, if the system has friction, the final result is affected by the loss of energy.
Explanation:
The result that you are showing is the conservation of mechanical energy between two points in the upper one, the energy is only potential and the lower one is only kinetic.
In the case of some type of friction, the change in energy between the same points is equal to the work of the friction forces
= ΔEm
=
-Em₀
As we can see now there is another quantity and for which the final energy is lower and therefore the final speed would be less than what you found in the case without friction.
=
+ Em₀
Remember that the work of the rubbing force is negative, let's write the work of the rubbing force explicitly, to make it clearer
½ m v² = -fr d + mgh
v = √(-fr d 2/m + 2 gh)
v = √ (2gh - 2fr d/m)
Now it is clear that there is a decrease in the final body speed.
Consequently, if the system has friction, the final result is affected by the loss of energy.