A wave has a frequency of 325 Hz. What is its period?
I did 1/325 = 0.003076 & I answered 0.003 and this answer was wrong. Can anyone help me?
T=1/f
Your answer is correct
T=3.0769•10^-3 s
To calculate the period of a wave, you need to find the reciprocal of the frequency. The period of a wave is the time it takes for one complete cycle of the wave to occur.
In this case, the frequency of the wave is given as 325 Hz. To find the period, you need to take the reciprocal of the frequency.
The reciprocal of a number is found by dividing 1 by that number. So, to find the period, you should divide 1 by 325:
1/325 = 0.00307692307
When you rounded the answer to three decimal places, you got 0.003. However, this value is not rounded correctly.
To round the answer to three decimal places properly, you need to consider the fourth decimal place. If it is 5 or greater, you round up the third decimal place. Otherwise, you simply drop the fourth decimal place.
In this case, the fourth decimal place is 9, which is greater than 5. Therefore, you need to round up the third decimal place, which gives you a final answer of 0.004.
Therefore, the correct answer is 0.004 seconds (s).