Answer:
(C) zero (there is no net horizontal component of the E-field)
Explanation:
If we subdivide the bar into small pieces, each piece (dx) contains a charge (dq), the electric field of each piece is equivalent to the field of a punctual electric charge, and has a direction as shown in the attached figure. For each piece (dx) in the negative axis there is another symmetric piece (dx) in the positive axis, and as we see in the figure for symmetry the sum of their electric fields gives a resultant in the Y axis (because its components in X are cancelled by symmetry).
Then the resultant of the electric field will be only in Y.
(C) zero (there is no net horizontal component of the E-field)
Answer:
d. H + O2 ------ H2O
that's the formation of water
Answer:
The heavy body
Explanation:
The heavy body because it's heavier and the heavier something is the more kinetic energy it has.
Pretty sure this is correct
Hope it helps
Answer:
For the purposes of your question, we can think of speed and velocity as being the same thing. Therefore, the kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four.
Explanation:
Answer:
Part a)
so the polarization axis of two polarizers must be at 90 degree
Part b)
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.
Explanation:
Part 1)
As per law of Malus we know that the intensity of light coming from the second polarizer and the intensity of the light from first polarizer is related as
now we know that we rotate the second polarizer till the intensity of the light becomes zero
so we will have
so we will have
so the polarization axis of two polarizers must be at 90 degree
Part b)
when two axis are inclined at 90 degree then scale reads 104.3 degree
so here the scale exceeds the reading by
so in order to make them inclined at 20 degree we will have
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.
