Answer:
Explanation:
Given that,
Power of electromagnetic energy, P = 100 W
We need to find the intensity at a distance of 10 m from the source. Intensity is equal to the power per unit area. So,
So, the intensity at a distance of 10 m is
If a 60-watt bulb is used to light a room, how much current is flowing through the bulb given that the voltage is 120 volts?
1 answer:
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Answer:
if there is any phase between the waves this value is less
if the sine function is ±, the amplitude of the total wave is
A_total = A₁ + A₂ + A₃+ A₄ +A₅
Explanation:
When several waves travel in the same direction, the process of adding them can take place.
y_total = ∑
where
y_{i} = A_{i} sin (k x - w t + Ф)
with fi the phase of each wave
To produce the largest possible result, all waves must come with the same phase
y_total = (A₁ + A₂ + A₃ + A₄ + A₅) sin (k x - wt)
if there is any phase between the waves this value is less
if the sine function is ±, the amplitude of the total wave is
A_total = A₁ + A₂ + A₃+ A₄ +A₅
<h3>Answer:</h3>
3. 0.0125 V
4. change in time, ∆t
<h3>Explanation:</h3>3. Faraday's law says ...
With suitable units, the magnetic flux Φ is the product of the magnetic field strength and the area of the loop. So ...
EMF = (∆B/∆t)·A = (0.250 T/s)·(0.05 m²) = 0.0125 V
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4. Refer to the discussion for problem 3. EMF is proportional to the change of flux with respect to time.