The full question is:
On a keyboard, you strike middle C, whose frequency is 256 Hz. What is the period of one vibration of this tone?
The period of a vibration is the time it takes for the particle to make one full oscillation. Frequency is by definition number of full oscillations per unit of time.
When the frequency is expressed in Hz that unit of time is one second.
So there is the following relation between frequency and period:
![T=\frac{1}{f}](https://tex.z-dn.net/?f=T%3D%5Cfrac%7B1%7D%7Bf%7D)
When we plug in the numbers we get:
Answer:
3rd choice
Explanation:
heat is transfered causing it to melt
Answer:
4
Explanation:
you have to divide the velocity by time so 40 divided by 10 and the answer should be 4
Answer:
2A
Explanation:
Given parameter:
Quantity of charge = 2C
Time taken = 1s
Unknown:
The current passing through the ring = ?
Solution:
Current can also be defined as the quantity of charge that passes through a conductor per unit of time:
I =
So;
I =
= 2A
Explanation:
Since, ∆ = − 0, we can find what temperature is required to cause the volume to be 0.15% larger than it is at 20℃: = 0 + ∆ = 20℃ + 29.4℃ = 49.4℃. Answer: = 49.4℃.