1. What force is needed to give an electron an acceleration of 1.00*10^10 meters per second2?(adsbygoogle = window.adsbygoogle || []).push({});

1) 9.11*10^-41 N 2) 9.11*10^-31 N 3) 9.11*10^-21 N 4) 1.10*10^43.

I used electron's mass times acceleration, but non of these is the answer.

2. Two concurrent forces of 6 newtons and 12 newtons could produce the same effect as a single force of _____

1) 5 N 2) 15 N 3) 20 N 4) 72 N

It just says the two concurrent forces, but I don't know the angle between them, then how can I find the resultant?

3. Two concurrent forces of 40 newtons and X newtons have a resultant of 100 newtons. Force X could be ____

1) 20 N 2) 40 N 3) 80 N 4) 150 N

It's like the same thing as the previous one, so how can I find it?

Thanks a lot.

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# Homework Help: Force needed to accelerate electron

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