Answer: whats the speed of the arrow?
Explanation:
As we know that induced EMF is given by rate of change in magnetic flux
so here we can say
here we know that
so here we can say
now by relation of EMF and electric field we can say
now plug in all values
r = 2.5 cm
f = 17 Hz
so electric field is given as E = 0.085 N/C
Answer:
17 N
Explanation:
Constant velocity means acceleration is 0.
If acceleration is 0, then the net force is 0. Which means the i components add up to 0, the j components add up to 0, and the k components add up to 0.
0 = 2.0 N − 8.0 N + Fi
Fi = 6.0 N
0 = 4.0 N + 9.0 N + Fj
Fj = -13 N
0 = -2.0 N − 8.0 N + Fk
Fk = 10. N
The magnitude of the force is:
F² = Fi² + Fj² + Fk²
F² = (6.0 N)² + (-13 N)² + (10. N)²
F = √305 N
F ≈ 17 N