If an electromagnetic wave has components Ey = E0 sin(kx - ωt) and Bz = B0 sin(kx - ωt), in what direction is it traveling?
1 answer:
You might be interested in
Answer:
The power of lens is 2.22 D.
Explanation:
Given that,
Distance of image v= 45 cm
We know that,
Distance of object u= ∞
Power of lens is the reciprocal of focal length.
We need to calculate the power of lens
Using formula of lens
Where, f = focal length
v = image distance
u = object distance
Put the value into the formula
Hence, The power of lens is 2.22 D.
The efficiency of a machine is the ratio between the output power and the power in input:
in our problem, the output power is 3760 W while the input power is 4000 W, so the efficiency is
So the efficiency of the machine is 94%.
in our problem, the output power is 3760 W while the input power is 4000 W, so the efficiency is
So the efficiency of the machine is 94%.