If you apply a force of 130 N to the lever, how much force is applied to lift the crate?
2 answers:
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Part a) The relationship between the electric field and the magnetic field of an electromagnetic wave is
where
E is the intensity of the electric field
B is the intensity of the magnetic field
c is the speed of light
Using the formula, we find:
part b) it is not specified in the text what is the verse of the magnetic field on the y-axis: I assume its direction is y+.
We can find the direction of the electric field by using the right-hand rule, where:
- the index finger gives the direction of E
- the middle finger gives the direction of B
- the thumb gives the direction of propagation of the wave
since the direction of propagation is x+, and the direction of the magnetic field is y+, we can see that the direction of the electric field (index finger) is z-.
where
E is the intensity of the electric field
B is the intensity of the magnetic field
c is the speed of light
Using the formula, we find:
part b) it is not specified in the text what is the verse of the magnetic field on the y-axis: I assume its direction is y+.
We can find the direction of the electric field by using the right-hand rule, where:
- the index finger gives the direction of E
- the middle finger gives the direction of B
- the thumb gives the direction of propagation of the wave
since the direction of propagation is x+, and the direction of the magnetic field is y+, we can see that the direction of the electric field (index finger) is z-.