anonymous
  • anonymous
The period of a wave: a. decreases with increasing frequency. b. increases with increasing frequency. c. increases with decreasing wavelength. d. a and c only. none of the above.
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Astrophysics
  • Astrophysics
\[T = \frac{ 1 }{ f }\] what can we say about this formula (period)?
anonymous
  • anonymous
That whichever number is below the 1 in the fraction is going to be the number itself?
Astrophysics
  • Astrophysics
Plug in some large and small numbers and see what happens and relate it to your options.

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More answers

anonymous
  • anonymous
That whichever number is below the 1 in the fraction is going to be the number itself?
Astrophysics
  • Astrophysics
\[f = \frac{ v }{ \lambda }\]
Astrophysics
  • Astrophysics
I don't know what you mean, can you elaborate, I don't see how it has to do with your question?
anonymous
  • anonymous
You asked what could I tell you about the first equation.
Astrophysics
  • Astrophysics
\[T = \frac{ 1 }{ 10000000 }\] what happens if the frequency is that high, will the period decrease or increase?
anonymous
  • anonymous
decrease.
Astrophysics
  • Astrophysics
Yes, now if we have \[T = \frac{ 1 }{ 0.000000001 }\]
anonymous
  • anonymous
Then we have a frequency that goes higher.
Astrophysics
  • Astrophysics
Exactly!
anonymous
  • anonymous
*increases
anonymous
  • anonymous
The answer is D
anonymous
  • anonymous
A & C
anonymous
  • anonymous
oops no. A
Astrophysics
  • Astrophysics
Now if we plug \[\huge T = \frac{ 1 }{ \frac{ v }{ \lambda } } \implies \frac{ \lambda }{ v }\] what happens?
anonymous
  • anonymous
Im lost with everything passed T = 1
anonymous
  • anonymous
First time in physics ....
anonymous
  • anonymous
I know wavelength symbol.
Astrophysics
  • Astrophysics
Well lets say the speed is constant, \[T = \frac{ \lambda }{ c }\] now if the period increases will the wavelength decrease or increase (the upside down y called lambda is the wavelength).
anonymous
  • anonymous
Right
Astrophysics
  • Astrophysics
All of these formulas are related so it's kind of neat you can rearrange them to find relations between them.
anonymous
  • anonymous
indeed
Astrophysics
  • Astrophysics
So it's not c, if the period increases the wavelength will as well
Astrophysics
  • Astrophysics
That means the only answer will be? :)
anonymous
  • anonymous
I had come back and say A
Astrophysics
  • Astrophysics
Right A, seems best to me as well :)
anonymous
  • anonymous
said*
Astrophysics
  • Astrophysics
Yes, I know but we had to go through all the options to make sure.
anonymous
  • anonymous
Which produces a period of 0.1 seconds? a. a wave with a frequency of 5 Hz b. a wave with a wavelength of 7 m c. a wave with a frequency of 10 Hz d. a wave with a speed of 5 m/s
Astrophysics
  • Astrophysics
Use the formula I provided earlier, \[T = \frac{ 1 }{ f }\]
anonymous
  • anonymous
Well that means the answer can only be either a or c ha.
Astrophysics
  • Astrophysics
and \[T = \frac{ \lambda }{ v }\]
Astrophysics
  • Astrophysics
No don't just assume that because I did not give you all the formulas
Astrophysics
  • Astrophysics
Try it yourself
anonymous
  • anonymous
T=1/10. T= 0.1. The answer is C.
Astrophysics
  • Astrophysics
Looks good
anonymous
  • anonymous
The frequency of a wave: a. increases with increasing period. b. decreases with increasing period. c. increases with increasing wavelength. d. a and c only.
anonymous
  • anonymous
I am thinking d.
anonymous
  • anonymous
Because frequency goes up and down.
Astrophysics
  • Astrophysics
We're just going backwards from your first question here, do the same thing plug in some numbers
Astrophysics
  • Astrophysics
\[T = \frac{ 1 }{ f } \implies f = \frac{ 1 }{ T }\]
anonymous
  • anonymous
A
anonymous
  • anonymous
The number change up when plugging in the digits was pretty cool to see.
Astrophysics
  • Astrophysics
Are you sure? Would frequency increase if period increases? \[f = \frac{ 1 }{ T } = \frac{ 1 }{ 100000000 }\]
anonymous
  • anonymous
Oh. Frequency decreases with the increased period. That earlier question had me a little confused.
anonymous
  • anonymous
So, B.
Astrophysics
  • Astrophysics
Yeah :)
anonymous
  • anonymous
The period of a vibrating object is halved if its frequency: a. triples. b. increases by one and a half times. c. increases by three and a half times. d. quadruples. e. doubles.
anonymous
  • anonymous
Doubles

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