Solving Simple Oscillation Frequency: A Quick Guide

[bobacity]

Homework Statement

A medical imaging device produces ultrasound by oscillating with a period of 0.400 μs. What is the frequency of this oscillation? Answer in units of Hz.

Relevant Equations

f = 1/T

I think I can solve the frequency by doing 1/0.400 μs, but I'm not sure.

 

[TSny]

Yes . Careful with the units.

 

[PeroK]

Be mega-careful!

 

[bobacity]

Would 0.400 μs be 4*10^7 seconds?

 

[TSny]

Would 0.400 μs be 4*10^7 seconds?

No. Are you sure that you typed what you meant to type? Check the sign of the power of 10.

 

[bobacity]

No. Are you sure that you typed what you meant to type? Check the sign of the power of 10.

oops, I meant 4*10^-7 seconds! Is that correct?

 

[malawi_glenn]

What power of 10 is µ ?

 

[TSny]

oops, I meant 4*10^-7 seconds! Is that correct?

Yes, that is the period. What do you get for the frequency in Hz?

 

[PeroK]

Would 0.400 μs be 4*10^7 seconds?

That's mega-careless!

 

[TSny]

That's mega-careless!

PeroK is never rude. But he can be punny.

 

[bobacity]

Yes, that is the period. What do you get for the frequency in Hz?

Would it be 2500000 Hz?

 

[PeroK]

Would it be 2500000 Hz?

My spreadsheet agrees with you:

T	f
4.00E-07​	2500000​