Part 1
If water does not spill at the top point of the circular motion then for the minimum speed condition we can say normal force will be zero at the top position
![mg = m\frac{v^2}{R}](https://tex.z-dn.net/?f=mg%20%3D%20m%5Cfrac%7Bv%5E2%7D%7BR%7D)
![g = \frac{v^2}{R}](https://tex.z-dn.net/?f=g%20%3D%20%5Cfrac%7Bv%5E2%7D%7BR%7D)
![v = \sqrt{Rg}](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7BRg%7D)
given that
R = 1 m
g = 9.8 m/s^2
now from above equation we have
![v = \sqrt{1(9.8)} = 3.13 m/s](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B1%289.8%29%7D%20%3D%203.13%20m%2Fs)
Part b)
for minimum value of angular speed we will have
![\omega = \frac{v}{R}](https://tex.z-dn.net/?f=%5Comega%20%3D%20%5Cfrac%7Bv%7D%7BR%7D)
![\omega = \frac{3.13}{1}](https://tex.z-dn.net/?f=%5Comega%20%3D%20%5Cfrac%7B3.13%7D%7B1%7D)
![\omega = 3.13 rad/s](https://tex.z-dn.net/?f=%5Comega%20%3D%203.13%20rad%2Fs)
Answer:
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Explanation:
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A. The correctly balanced equation is that in which the number of atoms of a certain element at the left-hand side is similar to that in the right hand side or the reactant side and product side, respectively. From the given equation, the answer would be,
C. Cl2 + 2NaI --> 2NaCl + I2
B. In the given chemical reaction above, heat is emitted such that it appears in the product side of the equation. Hence, this is an example of a combustion reaction.
C. Similar with the reasoning in letter A, the answer to this item is,
B. 2H2 + O2 --> 2H2O
Answer:
I think the awnser is B (but don't qoute me on that) if its right then yay but if its wrong im sorry
Explanation:
Answer:
h = 3.1 cm
Explanation:
Given that,
The volume of a oil drop, V = 10 m
Radius, r = 10 m
We need to find the thickness of the film. The film is in the form of a cylinder whose volume is as follows :
![V=\pi r^2 h\\\\h=\dfrac{V}{\pi r^2}\\\\h=\dfrac{10}{\pi \times 10^2}\\\\h=0.031\ m\\\\h=3.1\ cm](https://tex.z-dn.net/?f=V%3D%5Cpi%20r%5E2%20h%5C%5C%5C%5Ch%3D%5Cdfrac%7BV%7D%7B%5Cpi%20r%5E2%7D%5C%5C%5C%5Ch%3D%5Cdfrac%7B10%7D%7B%5Cpi%20%5Ctimes%2010%5E2%7D%5C%5C%5C%5Ch%3D0.031%5C%20m%5C%5C%5C%5Ch%3D3.1%5C%20cm)
So, the thickness of the film is equal to 3.1 cm.