Answer:
W=0.94J
Explanation:
Electrostatic potential energy is the energy that results from the position of a charge in an electric field. Therefore, the work done to move a charge from point 1 to point 2 will be the change in electrostatic potential energy between point 1 and point 2.
This energy is given by:
So, the work done to move the chargue is:
The work is positive since the potential energy in 1 is greater than 2.
Hello there,
<span>When a wave moves what happens to the medium
</span><span>it only moves parallel to the energy of the wave
</span>
Answer:
Explanation:
For an electromagnetic wave, the relationship between magnetic field amplitude and electric field amplitude is given by
where
E is the amplitude of the electric field
c is the speed of light
B is the amplitude of the magnetic field
For the electromagnetic wave in this problem, we have
E = 10 V/m is the amplitude of the electric field
So if we solve the formula for B, we find the amplitude of the magnetic field:
Answer:
55.56%
Explanation:
We'll begin by calculating the work done in pushing the wedge. This can be obtained as follow:
Force (F) = 900 N
Distance (s) = 0.1 m
Workdone (Wd) =..?
Wd = F × s
Wd = 900 × 0.1
Wd = 90 J
Finally, we shall determine the efficiency. This can be obtained as follow:
Work output = 50 J
Work input = 90 J
Efficiency =?
Efficiency = work output / work input
Efficiency = 50 / 90 × 100
Efficiency = 55.56%
Thus, the efficiency is 55.56%
Answer they require organelles
Explanation: