Answer:
a) E_{L} = -360 V
, b) t = 3 s
Explanation:
The electromotive force in an inductor is
= - L dI/ dt
in the exercise they give us the relation of i (t)
i (t) = 1.00 t² -6.00t
we carry out the derivative and substitute
E_{L} = - L (2.00 2t - 6.00 1)
a) the electromotive force at t = 1.00 s
E_{L} = - 90.0 (4.00 1 - 6.00)
E_{L} = -360 V
b) for t = 4 s
E_{L}= - 90 (2 4 2 - 6 4)
E_{L} = - 720 V
c) for the induced electromotive force to zero, the amount between paracentesis must be zero
(2.00 t2 - 6.00t) = 0
t (2.0 t-6.00) = 0
the solutions of this equation are
t = 0
2 t -6 = 0
t = 3 s
to have a different solution the trivial (all zero) we must total t = 3 s
It atmosphere is compsosed promarly of hyrogen and helium
'Acceleration' means ANY change in speed or direction
of motion.
A). Acceleration. The satellite is in a curved orbit, so
its direction is constantly changing.
B). Acceleration. The person is on a curved track, so
his direction is changing.
C). Acceleration. The car is following a curve, so
its direction is changing.
D). No acceleration. Straight, at constant speed.
No change of speed or direction.
Answer:
So electric field between the plates will be equal to 
Explanation:
We have given potential difference between accelerating plates = 24 KV = 24000 volt
Distance between the plates d = 1.5 cm = 0.015 m
We know that potential difference is given by V = Ed, here E is electric field and d is distance between plates
So 
E = 1600000 N/C =
So electric field between plates will be equal to
Explanation:
let vertical distance from A to C be 
the constraint equation is:
we want to find 
distance can be written as 
which we will find by using Pythagorean theorem h 1 is a constant and can be written as h:
taking derivative w.r.t time we get
given 
which gives us
