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These are all properties of waves and their definitions are useful to remember for exams. It can also be helpful to draw diagrams of each to help you to remember the difference. On the diagram it is us...
Our first step in this physics problem should be to identify all of the forces that act on the objects. There are two forces here,electrical and gravitational. Since both objects have the same charge i...
The first law is that an object will remain at a constant velocity or stationary (which is just a constant velocity of zero) unless acted upon by an external force.
Once acted upon by thi...
The alternating current creates an alternating magnetic field across the transformer. A magnetic field develops in the iron core of the transformer. This causes a potential difference to be induced acr...
V=IR, where V is voltage (volts), I is current (amps) and R is resistance (ohms). Since V and R are known, I needs to be found. Rearranging the equation gives: I=V/R. Inputting the value...
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