Answer:
<em>Speed of the electron is 2.46 x 10^8 m/s</em>
<em></em>
Explanation:
momentum of the electron before relativistic effect = 
where 
is the rest mass of the electron
V is the velocity of the electron.
under relativistic effect, the mass increases.
under relativistic effect, the new mass M will be
M = 
where
c is the speed of light = 3 x 10^8 m/s
V is the speed with which the electron travels.
The new momentum will therefore be
==> 
It is stated that the relativistic momentum is 1.75 times the non-relativistic momentum. Equating, we have
1.75 =
the equation reduces to
1.75 = 
square both sides of the equation, we have
3.0625 = 1/
3.0625 - 3.0625
= 1
2.0625 = 3.0625
= 0.67
β = 0.819
substitute for
V/c = 0.819
V = c x 0.819
V = 3 x 10^8 x 0.819 = <em>2.46 x 10^8 m/s</em>
Answer:
Energy absorbed or hidden when water evaporates
Explanation:
The heat that is required to make a phase change is known as latent heat.
A phase change occurs when matter changes state. For example from solid to liquid, from liquid to gas, among others.
When changing from liquid to gas (for example when water evaporates), the heat necessary for this to happen is called latent heat of vaporization. The word latent means hidden, because a change in temperature is not perceived during the phase change, even when heat is being added, thus it is said that the heat is hidden or latent.
So the answer is:
- Energy absorbed or hidden when water evaporates.
*Another type of latent heat is the latent heat of fusion, which is when a solid becomes liquid.
Consider the formula ...
Current = (voltage) / (resistance) .
If the resistance doesn't change, then the current is
directly proportional to the voltage.
If the voltage decreases to 1/3 of what it used to be,
then the current does the same thing.
1.2 A ----> 0.4 A
Answer:
The discharging current is 
Explanation:
From the question we are told that
The radius of each circular plates is R
The displacement current is 
The radius of the central circular area is 
The discharging current is mathematically represented as
where A is the area of each plate which is mathematically represented as
and k is central circular area which is mathematically represented as
![k = \pi [\frac{R}{2} ]^2](https://tex.z-dn.net/?f=k%20%20%3D%20%20%5Cpi%20%5B%5Cfrac%7BR%7D%7B2%7D%20%5D%5E2)
So
![I_d = \frac{\pi R^2 }{\pi * [ \frac{R}{2}]^2 } * I](https://tex.z-dn.net/?f=I_d%20%20%3D%20%20%5Cfrac%7B%5Cpi%20R%5E2%20%7D%7B%5Cpi%20%2A%20%5B%20%5Cfrac%7BR%7D%7B2%7D%5D%5E2%20%7D%20%2A%20%20I)
substituting values
