What are the differences between deterministic forces and thermal agitation?
1 answer:
You might be interested in
Answer:
a) fem = 5.709 V, b) t = 0.196 s, c) t = 0.589 s, d) T = 0.785 s
Explanation:
This is an exercise in Faraday's law
fem= - N
fem = - N
The magnetic field and the area are constant
fem = - N B A
fem = - N B A (-sin θ)
fem = N B (π d² / 4) sin θ w
fem= N B d² w sin θ
with this expression we can correspond the questions
a) the peak of the electromotive force
this hen the sine of the angle is 1
sin θ = 1
fem = 77 1.18 0.10² 8.0
fem = 5.709 V
b) as the system has a constant angular velocity, we can use the angular kinematics relations
θ = w₀ t
t = θ/w₀
Recall that the angles are in radians, so the angle for the maximum of the sine is
θ= π/2
t =
t = 0.196 s
c) for the electromotive force to be negative, the sine function of being
sin θ= -1
whereby
θ = 3π/ 2
t =
t = 0.589 s
d) This electromotive force has values that change sinusoidally with an angular velocity of
w = 8 rad / s
angular velocity and period are related
w = 2π / T
T = 2π / w
T = 2π / 8
T = 0.785 s
Answer : Total electrical energy is 36000 J.
Explanation :
It is given that,
Power of electric toaster, P = 1200 Watts
Voltage, V = 120 Volts
Time, t = 30 s
Electric energy is defined as the product of the power and the time taken.
Total electrical energy used to operate the toaster for 30 seconds is 36000 J.