Answer:
We, apply equal torque to both spheres and measure their final angular acceleration.
Explanation:
The moment of Inertia of solid sphere will be (2/5)mr²
The moment of Inertia of hollow sphere will be (2/3)mr²
Thus, the moment of inertia of inertia of hollow sphere is greater than that of the solid sphere. Since, the torque is equal to the product of moment of inertia and angular acceleration.
Therefore, we design a test such that we apply the same amount of torque to both the spheres. Due to greater amount of moment of inertia the hollow sphere will acquire high angular acceleration, while solid sphere will acquire low angular acceleration.
Hence, by the measurement of final angular acceleration, we can determine, which sphere is which.
Hello!
How many molecules are in 30 liters of methane (CH4) at STP ?
We have the following information:
Knowing that by Avogadro's Law for each mole of substance we have 6.02 * 10²³ molecules, it is known that in STP (Standard Temperature and Pressure) one mole of any gas equals 22.4 L, then:
22.4 L ----------------- 6.02*10²³ molecules
30 L -------------------- y molecules
![\dfrac{22.4}{30} = \dfrac{6.02*10^{23}}{y}](https://tex.z-dn.net/?f=%5Cdfrac%7B22.4%7D%7B30%7D%20%3D%20%5Cdfrac%7B6.02%2A10%5E%7B23%7D%7D%7By%7D)
multiply the means by the extremes
![22.4*y = 30*6.02*10^{23}](https://tex.z-dn.net/?f=22.4%2Ay%20%3D%2030%2A6.02%2A10%5E%7B23%7D)
![22.4*y = 1.806*10^{25}](https://tex.z-dn.net/?f=22.4%2Ay%20%3D%201.806%2A10%5E%7B25%7D)
![y = \dfrac{1.806*10^{25}}{22.4}](https://tex.z-dn.net/?f=y%20%3D%20%5Cdfrac%7B1.806%2A10%5E%7B25%7D%7D%7B22.4%7D)
![\boxed{\boxed{y = 8.0625*10^{23}\:molecules}}\:\:\:\:\:\:\bf\green{\checkmark}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cboxed%7By%20%3D%208.0625%2A10%5E%7B23%7D%5C%3Amolecules%7D%7D%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5Cbf%5Cgreen%7B%5Ccheckmark%7D)
Answer:
8.0625*10²³ molecules of methane
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![\bf\green{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}](https://tex.z-dn.net/?f=%5Cbf%5Cgreen%7BI%5C%3AHope%5C%3Athis%5C%3Ahelps%2C%5C%3Agreetings%20...%5C%3ADexteright02%21%7D%5C%3A%5C%3A%5Cddot%7B%5Csmile%7D)
In a 0.01 M solution of HCl, Litmus will be red. Litmus paper will turn into red in acidic conditions. Hydrochloric acid is an acid. Litmus is an indicator for acidity and alkalinity made from inchens.
Need be in english because I don’t understand spanish