Answer:
The number of revolutions turned by the centrifuge is 8250 revolutions.
Explanation:
Given;
number of revolution per minutes, ω = 15000 rpm
time of motion, t = 330 s = 5.5 minutes
The number of revolutions turned by the centrifuge is given by;
![N = \frac{1500 \ Rev}{minutes} *5.5 \ minutes\\\\N = 8250 \ revolutions](https://tex.z-dn.net/?f=N%20%3D%20%5Cfrac%7B1500%20%5C%20Rev%7D%7Bminutes%7D%20%2A5.5%20%5C%20minutes%5C%5C%5C%5CN%20%3D%208250%20%5C%20revolutions)
Therefore, the number of revolutions turned by the centrifuge is 8250 revolutions.
Answer:
Mass = Size, Weight = Heaviness
Explanation:
Mass is how much matter that is in an object
Weight is a measurement that indicates how heavy something
Answer:
Silicon (2.33 g/cm3) < Titanium (4.51 g/cm3) < Nickel (8.9 g/cm³) < Copper (8.96 g/cm³)
Explanation:
Density of copper = 8.96 g/cm³
Density of Nickel = 8.9 g/cm³
Density of Titanium = 4.51 g/cm3
density of silicon = 2.33 g/cm3
The correct order of above metals based on the increasing density is as follow
Silicon (2.33 g/cm3) < Titanium (4.51 g/cm3) < Nickel (8.9 g/cm³) < Copper (8.96 g/cm³)
Thus, copper has the highest density among all.
<span>This statement is true - humans require a certain percentage of body fat to function effectively. As a result of childbearing, women's bodies require a higher level of body fat than men: roughly 10-13%, compared to 2-5%. </span>
![\qquad\qquad\huge\underline{{\sf Answer}}](https://tex.z-dn.net/?f=%5Cqquad%5Cqquad%5Chuge%5Cunderline%7B%7B%5Csf%20Answer%7D%7D)
As we know, period (t)of a wave and it's frequency (f) are Reciprocal of each other, so if one is know then we can just reverse the order to get the other one.
that is :
![\qquad \sf \dashrightarrow \: frequency = \dfrac{1}{period}](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20%20frequency%20%3D%20%20%5Cdfrac%7B1%7D%7Bperiod%7D%20)
Now, let's move on to problems ~
# 11. f = 15 hertz, t = ?
![\qquad \sf \dashrightarrow \: t = \dfrac{1}{15} \: \: sec](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20t%20%3D%20%20%5Cdfrac%7B1%7D%7B15%7D%20%20%5C%3A%20%20%5C%3A%20sec)
![\qquad \sf \dashrightarrow \: t \approx0.067 \: \: sec](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20t%20%5Capprox0.067%20%5C%3A%20%20%5C%3A%20%20sec)
#12. f = 292 hertz, t = ?
![\qquad \sf \dashrightarrow \: t = \dfrac{1}{292} \: \: sec](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20t%20%3D%20%20%5Cdfrac%7B1%7D%7B292%7D%20%20%5C%3A%20%20%5C%3A%20sec)
![\qquad \sf \dashrightarrow \: t \approx0.0034 \: \: sec](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20t%20%5Capprox0.0034%20%5C%3A%20%20%5C%3A%20%20sec)
#13. t = 12 seconds, f = ?
![\qquad \sf \dashrightarrow \: f= \dfrac{1}{12} \: \: hertz](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20f%3D%20%20%5Cdfrac%7B1%7D%7B12%7D%20%20%5C%3A%20%20%5C%3A%20hertz)
![\qquad \sf \dashrightarrow \: f \approx0.083 \: \: hertz](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3A%20f%20%5Capprox0.083%20%5C%3A%20%20%5C%3A%20%20hertz)