In an electric motor, periodically changing the direction of current in the electromagnet can cause the axle to spin because of the reversing of magnetic field direction.
Explanation
An electric motor consists of a long rod termed as axle which is connected to the electric current.
When the current will be flowing through the axle, a magnetic field will be generated around the axle due to magnetic induction.
The axle is positioned between two strong electromagnets. So when the magnetic field is generated around the axle, depending upon the direction of flow of current, the magnetic field can get attracted or repelled by the electromagnets.
Thus the change in the direction of current flow will lead to reverse in the direction of magnetic field generated around the axle causing it to spin.
Wave speed = frequency * wavelength
We need to rearrange this equation because we are finding the wavelength :
Wavelength = wave speed / frequency
To rearrange it, I just divided it by frequency so that wavelength was the subject.
Now, input these numbers into this equation :
Wavelength = wave speed / frequency
Wavelength = 25 / 5
Wavelength = 5m
<span>The correct answer is B - Light can travel in a vacuum, and its speed is constant if the source is moving or stationary.</span>
Answer:
B) krypton
Explanation:
Electron configuration of Br: [Ar] 3d10 4s2 4p5
Since we have the bromide ion with a negative charge, Br's atom acquired an electron and therefore another electron is added to the electronic configuration
.
Electron configuration of Br-: [Ar] 3d10 4s2 4p6
And now this electronic configuration coincides with that of Krypton as we see below
:
Electron configuration of Kr: [Ar] 3d10 4s2 4p6
Answer: that's where the fuel pump comes in handy. The fuel pump pumps the gas out and brings it throught the fuel lines to the engine. With the fuel pump you would have to have the line to the engine on the bottom.
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