The answer to this question is False
The correct answer is C july-september plz mark as brainliest!
Since the Units presented are not in the International System we will proceed to convert them. We know that,

So the speed in SI would be


The change in frequency when the wave is reflected is

Or we can rearrange the equation as

f' = Apparent frequency
f = Original Frequency
c = Speed of light


Replacing,


Since the waves are reflected, hence the change in frequency at the gun is equal to twice the change in frequency



Therefore the increase in frequency is 2979.63Hz
Answer:
Explanation:
The centripetal acceleration requirement must equal gravity at the top of the circle
mg = mv²/R
v = √Rg
v = √(1.0(9.8))
v = 3.1304951...
v = 3.1 m/s
Calcium ions have a +2 charge and sulfur ions have a -2 charge, so the formula is CaS