Answer:
a. They will be tie
b. Win the wood cylinder
Explanation:
a.
The both cylinders will reach the bottom at the same time notice the relation in the equation in indepent of the length and both have the same radius and the same rotational inertia.
![I=\frac{1}{2}*m*r^2](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B1%7D%7B2%7D%2Am%2Ar%5E2)
![a=\frac{g*sin(\beta)}{1+I_{com}/m*r^2}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bg%2Asin%28%5Cbeta%29%7D%7B1%2BI_%7Bcom%7D%2Fm%2Ar%5E2%7D)
So both will be tie
b.
![a_{brass}=\frac{g*sin(\beta)}{1+I_{brass}/m*r^2}=a_{wood}=\frac{g*sin(\beta)}{1+I_{wood}/m*r^2}](https://tex.z-dn.net/?f=a_%7Bbrass%7D%3D%5Cfrac%7Bg%2Asin%28%5Cbeta%29%7D%7B1%2BI_%7Bbrass%7D%2Fm%2Ar%5E2%7D%3Da_%7Bwood%7D%3D%5Cfrac%7Bg%2Asin%28%5Cbeta%29%7D%7B1%2BI_%7Bwood%7D%2Fm%2Ar%5E2%7D)
The acceleration of the wood cylinder is larger than the acceleration of the brass cylinder so the cylinder of wood will reach the bottom first
![a_{brass}](https://tex.z-dn.net/?f=a_%7Bbrass%7D%3Ca_%7Bwood%7D)
So the wood win the race
Answer:
Explanation:
An insulator. You can see ceramic insulators on telephone poles and power poles if you look carefully. If you live in a city, somewhere in that city is a power station. The insulators are huge. They have to be. The currents are very large in many cases.
The relationship between current and voltage and resistance is described by ohlm's law. This equation i=v/r tells that the current i flowing through a circuit is directly proportional to the voltage v, and inversely proportional to resistance r. This desceibes the relationship of voltage, current and resistance.
Explanation:
Fgravity = G*(mass1*mass2)/D²
so, if you double one of the masses, what does that do to our equation ?
Fgravitynew = G*(2*mass1*mass2)/D²
due to the commutative property of multiplication
Fgravitynew = 2* G*(mass1*mass2)/D² = 2* Fgravity
so, the correct answer will be 2×45 = 90 units.
The molecular geometry of both F2 and HF is linear.There are only two atoms which are covalently bonded and thus, the bonding scheme with the atoms looks like this;
F --- F
H---F
So, both are linear.