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Rainbow [258]
2 years ago
14

Thirty beats are heard in one minute when two notes are played together. If the higher note has a frequency of 740 Hz, what is t

he frequency of the lower note
Physics
1 answer:
SashulF [63]2 years ago
6 0

Answer:

739.5 Hz

Explanation:

Frequency is the the number of wave oscillation that occur in a second. It is measured in Hertz (Hz).

In this question, the frequency of the note is the number of beats that occur in a second. Given that they are Thirty beats are heard in one minute, hence:

Frequency = 30 beat / 1 minute = 30 beats / 60 seconds = 0.5 beat per second = 0.5 Hz

Higher note - lower note = frequency

lower note = higher note - frequency

lower note = 740 Hz - 0.5 Hz

lower note = 739.5 Hz

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2 years ago
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3 years ago
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How high can a body vertically thrown with a speed of 40m/s raise after 3 sec (neglecting air
Tcecarenko [31]

y = 75.9 m

Explanation:

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If we put the origin of our coordinate system at the point where a body is launched, then y0 = 0.

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5 0
2 years ago
A -0.00325 C charge q1 is placed 5.62 m from a second charge q2. The first charge is repelled with a 48900 N force. What is the
blagie [28]

Answer: q2 = -0.05286

Explanation:

Given that

Charge q1 = - 0.00325C

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E = F/q

Substitute F and q into the formula

E = 48900/0.00325

E = 15046153.85 N/C

The value of the repelled second charge will be achieved by using the formula

E = kq/d^2

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d = 5.62m

Substitutes E, d and k into the formula

15046153.85 = 8.99×10^9q/5.62^2

15046153.85 = 284634186.5q

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