Answer:
x = 0.081 m.
Explanation:
a) To find how much does the atmospheric pressure cause the spring to compress we need to use the following equation:
(1)
<u>Where</u>:
F: is the force
k: is the spring constant = 3300 N/m
x: is the distance of compression =?
The force can be found as follows:
<u>Where</u>:
P: is the atmospheric pressure = 101325 Pa
A: is the area of the piston = πr²
r: is the radius = 0.029 m
Now, from equation (1) we can find x:
Therefore, the atmospheric pressure causes the spring to compress 0.081 m.
I hope it helps you!
Answer:
Option d
Explanation:
From Maxwell's law, we know that;
where
E = Electric Field
B = Magnetic Field
Also from Lenz Law:
emf, e = - 
where
= magnetic flux linkage
Now, in order for the current not to be induced in the loop, option a and c do not hold.
Since from the above equations, variation in both or any of the magnetic and electric fields will result in the induction of current as both are vector.
For the option b, if we rotate the loop about the diameter or increase the size or area of the loop, it will result in the change in its magnetic flux and current will be induced as is clear from the given equation:
Now, in case of option d, if we consider a uniform magnetic field, then there won't be any variation and hence no current will be induced while we slide the wire perpendicular to the loop.
The technical name was kinda given in the question, and I'm guessing that's what they want: Dispersion. It refers to the phenomenon of different frequencies traveling at different speeds through a medium. This is due to the fact that the relative electric permittivity is a complex quantity that is a function of frequency. The relative electric permittivity,
, is related to the speed of the wave in the medium by the relation:
Since this speed is a function of permittivity, and permittivity is a function of frequency, speed is a function of frequency.
Probably more info than you needed....
Answer:
DUDE USE UR BRAOIIINNNNNNNNNNNNN ITS B
Explanation:
