Almost right. protons are positive and electrons are negative. so when you run the balloon on your hair, electrons are transferred between them (i’m not sure which direction) and now one is positively charged as it lost negative particles and one is negative as it gained negative particles (electrons). opposite charges attract
Answer:
8 N
Explanation:
Using the equation F=ma (F: force/ m: mass in kg/ a: acceleration),
F = (800/1000)(10)
F = 8 N
In the blank should go of friction.
Answer:
The magnitude of angular acceleration is
.
Explanation:
Given that,
Initial angular velocity, ![\omega_i=3500\ rev/min=366.5\ rad/s](https://tex.z-dn.net/?f=%5Comega_i%3D3500%5C%20rev%2Fmin%3D366.5%5C%20rad%2Fs)
When it switched off, it comes o rest, ![\omega_f=0](https://tex.z-dn.net/?f=%5Comega_f%3D0)
Number of revolution, ![\theta=46=289.02\ rad](https://tex.z-dn.net/?f=%5Ctheta%3D46%3D289.02%5C%20rad)
We need to find the magnitude of angular acceleration. It can be calculated using third equation of rotational kinematics as :
So, the magnitude of angular acceleration is
. Hence, this is the required solution.