Electromagnets can be turned off, this makes it easier to release things from the magnetic field.
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The average speed between 0 h and 2.340 h is 6.97 Km/h
Average speed is defined as the total distance travelled divided by the total time taken to cover the distance.

With the above formula, we can obtain the average speed between 0 h and 2.340 h as illustrated below:
- Total time = 2.340 – 0 = 2.340 h
- Total distance = 16.3 – 0 = 16.3 Km
- Average speed =?

Learn more about average speed: brainly.com/question/24884027
Answer:
A
Explanation:
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True because all switches use contacts to start or stop the flow of electrons in a circuit
Compared to the charge on a proton, the amount of charge on an electron is same and has the opposite sign