Answer:
Explanation:
Magnitude of force per unit length of wire on each of wires
= μ₀ x 2 i₁ x i₂ / 4π r where i₁ and i₂ are current in the two wires , r is distance between the two and μ₀ is permeability .
Putting the values ,
force per unit length = 10⁻⁷ x 2 x i x 2i / ( 6 x 10⁻³ )
= .67 i² x 10⁻⁴
force on 3 m length
= 3 x .67 x 10⁻⁴ i²
Given ,
8 x 10⁻⁶ = 3 x .67 x 10⁻⁴ i²
i² = 3.98 x 10⁻²
i = 1.995 x 10⁻¹
= .1995
= 0.2 A approx .
2 i = .4 A Ans .
Yes, that is truly amazing.
They significantly reduced the noise's intensity by 90%, that might be proper reaction.
<h3>What is noise?</h3>
- Unwanted sound that is regarded loud, unpleasant, or disruptive to hearing is called noise.
- Physically speaking, there is no difference between unwanted sound and desired sound because both are vibrations traveling through a medium like air or water.
- When the brain receives and interprets a sound, a difference occurs.
- Decibels are used to measure sound (dB).
- A motorcycle engine operating is roughly 95 dB louder than regular conversation, which is around 60 dB louder than a whisper.
- Your hearing may begin to be harmed if exposed to noise over 70 dB for an extended period of time.
- Your ears can suffer instant damage from loud noise above 120 dB.
<h3>What is sound intensity?</h3>
- The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity.
- The watt per square meter is the SI measure of intensity, which also covers sound intensity.
Learn more about sound here:
brainly.com/question/14595927
#SPJ4
False. What actually determines the properties of elements are the electrons, or aka valence electrons. They are used to bond, which determines its properties.
Answer:
circuit b will have the higher current than circuit a
(a) The period of the oscillation is 0.8 s.
(b) The frequency of the oscillation is 1.25 Hz.
(c) The angular frequency of the oscillation is 7.885 rad/s.
(d) The amplitude of the oscillation is 3 cm.
(e) The force constant of the spring is 148.1 N/m.
The given parameters:
- <em>Mass of the ball, m = 2.4 kg</em>
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From the given graph, we can determine the missing parameters.
The amplitude of the wave is the maximum displacement, A = 3 cm
The period of the oscillation is the time taken to make one complete cycle.
T = 0.8 s
The frequency of the oscillation is calculated as follows;
The angular frequency of the oscillation is calculated as follows;
The force constant of the spring is calculated as follows;
Learn more about general wave equation here: brainly.com/question/25699025
