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:
![v=\omega r=33\frac{1}{3}\times\frac{2\pi}{60}\times 10\times 10^{_2}\\\\=0.3843m/s\\](https://tex.z-dn.net/?f=v%3D%5Comega%20r%3D33%5Cfrac%7B1%7D%7B3%7D%5Ctimes%5Cfrac%7B2%5Cpi%7D%7B60%7D%5Ctimes%2010%5Ctimes%2010%5E%7B_2%7D%5C%5C%5C%5C%3D0.3843m%2Fs%5C%5C)
#From
above, if the bumps are uniformly separated by 1m, then the rate at which they hit the stylus is:
![Hits/second=v/d \ \ \ \ d=1.75mm\\\\=0.3483/0.000175\\\\=199.0385714\approx 199](https://tex.z-dn.net/?f=Hits%2Fsecond%3Dv%2Fd%20%20%20%20%5C%20%5C%20%5C%20%5C%20d%3D1.75mm%5C%5C%5C%5C%3D0.3483%2F0.000175%5C%5C%5C%5C%3D199.0385714%5Capprox%20199)
Hence the bumps hit the stylus at around 199hit/s
75 percent off of water and please water the light water and water water and then go back and please water pollution please 880m
Answer:
In the more scientific viewpoint, the most important thing that she must do is caring for her hygiene and put some plastic gloves in her hands.
This is because there are lots of particles that can be retained in the hands (dust, skin, etc), and when examining the scene, she may drop some of these particles, "contaminating" the scene in this way with information that only will affect the investigation.
So the most important thing is being prepared to not affect anything in the crime scene
media.discordapp.net/attachments/782414373888458783/826224189828366377/video0.mp4