If a body p with a positive charge is placed in contact with a body q (initially uncharged), then the nature of charge gained by q must be positive, because rubbing an uncharged body with a charged body or placed in contact with a positive charged body, helps gain a charge to the uncharged body.
There are a variety of methods to charge an object. One method is known as induction. In the induction process, a charged object is brought near but not touched to a neutral conducting object.
Let's know, how a element gain positive charge?
A positive charge occurs when the number of protons exceeds the number of electrons. A positive charge may be created by adding protons to an atom or object with a neutral charge. A positive charge also can be created by removing electrons from a neutrally charged object.
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From the calculations, the angular momentum is 10 Kg m^2/s while the new force is 50N.
<h3>What is the angular velocity?</h3>
The angular velocity is defined as the product of the mass, velocity and the radius of the material.
Thus;
L = mvr = 2 Kg * 1m * 5 m/s = 10 Kg m^2/s
b) Given that;
F= Gm^2/r^2
If the distance is halved then the force is reduced by 1/4 thus the new force is 50N.
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A wall uses diffuse reflection while a mirror uses specular reflection. For example, when parallel light rays enter a mirror, they remain parallel when exiting the mirror, allowing you to see a reflection of the light rays. On the contrary, when incident light rays enter a wall which is painted, the rays scatter, not allowing you to see anything but a painted wall.
They are malleable and lustrous, and can conduct both electricity and thermal heat
