Given that,
At 3.00 m from a source that is emitting sound uniformly in all directions, the sound level is 60.0 dB.
To find,
The distance from the source would the sound level be one-fourth the sound level at 3.00 m.
Solution,
The intensity from a source is inversely proportional to the distance.
Let I₁ = 60 dB, r₁ = 3 m, I₂ = 60/4 = 15 dB, r₂ =?
Using relation :
So, at a distance of 6 m the sound level will be one fourth of the sound level at 3 m.
The total number of lamps is mathematically given as
N=24
<h3>What is the t
otal number of
lamps?</h3>
Question Parameters:
How many 60-watt lamps could be connected in parallel on a 15-amp, 120-volt
Generally, the equation for the Power is mathematically given as
P=IV
Therefore
I=P/v
I=60/120
I=0.5A
Since the system does not exceed 80% of the rating
NI=I'(0.8)
N=15*0.8/0.5
N=24
In conclusion, the total number of lamps is
N=24
Read more about Arithmetic
brainly.com/question/22568180
Answer: The voltage the secondary coil of the transformer provides is 4.62V
Explanation: Please see the attachments below
Answer:
n = 1000 pulses
Explanation:
Given that,
The frequency of a pulse waveform,
To find,
The number of pulses counted during 100 ms.
Solution,
The frequency of a pulse waveform is equal to the number of pulses per unit time. It is given by :
n = 1000 pulses
So, there are 1000 pulses counted in a pulse waveform.
Answer:
knowledge nothin' nothin' nothing nothin' nothin' mysterious mmysterious m