Answer:
Hits per second=199 hit/s
Explanation:
#Given the angular velocity, 
, radius of the record 
and the distance between any two successive bumps on the groove as 
.
The linear speed of the record in meters per second is:
#From 
above, if the bumps are uniformly separated by 1m, then the rate at which they hit the stylus is:
Hence the bumps hit the stylus at around 199hit/s
How does the different type of music such as classic, hiphop, or rock affect the human mind
Answer: Load divided by it effort
Explanation:
Mechanical advantage of any machine is its load divided by its effort
"physical science" is a branch of science that is based on practical tests and explanations of the different phenomena. It is based on scientific evidence and tests/experiments.
Some of the branches that are based on physical science are:
1- Astronomy
2- Electronics
3- Engineering
4- Radiology
Answer:
n=-1 and m=2
Explanation:
A particle is moving uniformly with acceleration "a"
Uniform speed is v
And radius of circle is r
The acceleration is proportional to
r^n and v^m
i.e
a∝ rⁿ
a ∝v^m
Combing the two
Then, a∝rⁿv^m
Let k be constant of proportionality
Then, a=krⁿv^m. Equation 1
So, we know that the centripetal acceleration keeping an object in circular path is given as
a=v²/r
Rearranging
a=v²r^-1. Equation 2
So comparing this to the proportional
Equating equation 1 and 2
krⁿv^m = v²r^-1
This shows that,
k=1
rⁿ = r^-1
Then, n =-1
Also, v^m =v²
Then, m=2
Therefore,
n=-1 and m=2
