Its a chemical change. Think of it in a way of being able to change it back to its original state. You cant change something back to its original state if its a chemical change. You can however turn something back to its original state when it under goes a physical change.
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:
When we plug in the numbers we get:
The distance covered as the crane does work is 76 m.
Recall that the work done in lifting the crane is the product of force and distance covered. In this case, we are talking about the distance through which the crane is raised. Therefore;
Work done = Fs
F = Force applied
s = Distance covered
Substituting values;
Work done/Force applied = Distance covered
Distance covered = 9,500 J/125 N
Distance covered = 76 m
Learn more: brainly.com/question/17638582
D = <span>
2.4 g/cm3We learned this in my physics class as well.
</span><span><span>
p = m/v</span></span>
Where:
p = density
m = mass
V = volume
So to find the density you solve 36/16
=2.4
Hope this helped. Have a great day!
Answer:photon energy
Explanation:
Photon energy is energy carried by a single photon