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Bezzdna [24]
2 years ago
6

Your boss asks you compare two sound waves and determine which has the higher frequency. Wave A has a period of 4⁄100 second and

Wave B has a period of 1⁄7 second. What would you tell your boss?
A. Wave B has the higher frequency. Its frequency is 7 Hz.
B. Wave A has the higher frequency. Its frequency is 25 Hz.
C. Wave B has the higher frequency. Its frequency is 42 Hz.
D. Wave A has the higher frequency. Its frequency is 4 Hz.
Physics
2 answers:
s2008m [1.1K]2 years ago
8 0

<u>Answer</u>

B. Wave A has the higher frequency. Its frequency is 25 Hz.


<u>Explanation</u>

Frequency is the number of oscillation/revolutions in a unit time. On the other hand, period is the time taken to complete one oscillation/revolution.

From the definition above we can conclude that, frequency(f) is the reciprocal of period(T). That is;

f = 1/T and

T = 1/f


Wave A

f = 1/(4/100)

= 100/4

= 25 Hz

Wave B

f = 1/(1/7)

= 7/1

= 7 Hz

So, <em>wave A has the higher frequency. Its frequency is 25 Hz.</em>

a_sh-v [17]2 years ago
6 0

<u>Answer:</u> The correct answer is Option B.

<u>Explanation:</u>

Frequency is defined as the reciprocal of time period. It is measured in Hertz(Hz) or Sec^{-1}.

\nu=\frac{1}{\text{Time Period}}

For wave A:

Time period given is \frac{4}{100}seconds. So, frequency will be:

\nu_A=\frac{1}{4/100}=\frac{100}{4}=25Hz

For wave B:

Time period given is \frac{1}{7}seconds. So, frequency will be:

\nu_B=\frac{1}{1/7}=\frac{7}{1}=7Hz

From above, we can say that the frequency of wave A is more than the frequency of wave B.

Hence, the correct answer is Option B.

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skelet666 [1.2K]

Answer:first of all what is your question and i can give and example which is Use them when you have 2 forces named Fa & FF or Fg & Ff acting in opposite directions on an object and you need to know the resultant of your 2 forces.

Explanation:

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5 0
2 years ago
Question 4. A tuning fork ‘A’ produces 6 beats/sec with another fork ‘B’ of un-known frequency. On
8090 [49]

Clever problem.

We know that the beat frequency is the DIFFERENCE between the frequencies of the two tuning forks.  So if Fork-A is 256 Hz and the beat is      6 Hz, then Fork-B has to be EITHER 250 Hz OR 262 Hz.  But which one is it ?

Well, loading Fork-B with wax increases its mass and makes it vibrate SLOWER, and when that happens, the beat drops to 5 Hz.  That means that when Fork-B slowed down, its frequency got CLOSER to the frequency of Fork-A ... their DIFFERENCE dropped from 6 Hz to 5 Hz.

If slowing down Fork-B pushed it CLOSER to the frequency of Fork-A, then its natural frequency must be ABOVE Fork-A.

The natural frequency of Fork-B, after it gets cleaned up and returns to its normal condition, is 262 Hz.  While it was loaded with wax, it was 261 Hz.

4 0
3 years ago
Ions can have a positive or negative charge. Please select the best answer from the choices provided T F
mixas84 [53]

From among the choices provided, the more appropriate
answer is ' T ', the initial letter often used to represent
words that include 'true', 'truth', 'trust', etc., (as well as
'tree', 'train', 'transmit', 'Transylvania', 'trachea', 'travesty',
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This response is the most fitting and appropriate, because
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5 0
3 years ago
A 20 kg bike accelerates at 10 m/s2. What was the force?
agasfer [191]

Answer:

200 N = 200 Newtons

Explanation:

Just use the formula F = m*a

F = Force in Newtons

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a = acceleration and is 10 m/s^2

F = 20 * 10

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7 0
3 years ago
An AC generator consists of eight turns of wire, each of area 0.0775 m2 , and total resistance of 8.53 Ω. The loop rotates in th
Bad White [126]

Answer:

44.08 Volt

Explanation:

N = 8, A = 0.0775 m^2, R = 8.53 ohm, B = 0.222 T, f = 51 Hz

e0 = N B A w

e0 = 8 x 0.222 x 0.0775 x 2 x 3.14 x 51

e0 = 44.08 Volt

3 0
3 years ago
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