Which law states that for any closed loop, the sum of the length segments times the magnetic field in the direction of the segme
2 answers:
Answer:
Ampere's law
Explanation:
As per Ampere Law we know that line integral of magnetic field along the closed ampere loop is equal to the product of permeability of the medium with total enclosed current in that ampere's loop
so it is given as
so here we can say that correct answer for the given condition is Ampere's law
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a) 0.94 m
The work done by the snow to decelerate the paratrooper is equal to the change in kinetic energy of the man:
where:
is the force applied by the snow
d is the displacement of the man in the snow, so it is the depth of the snow that stopped him
m = 68 kg is the man's mass
v = 0 is the final speed of the man
u = 55 m/s is the initial speed of the man (when it touches the ground)
and where the negative sign in the work is due to the fact that the force exerted by the snow on the man (upward) is opposite to the displacement of the man (downward)
Solving the equation for d, we find:
b) -3740 kg m/s
The magnitude of the impulse exerted by the snow on the man is equal to the variation of momentum of the man:
where
m = 68 kg is the mass of the man
is the change in velocity of the man
Substituting,