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vagabundo [1.1K]
3 years ago
15

Which device will allow you to reduce the voltage from 120 vac to vdc in order to charge a cell phone?

Physics
1 answer:
Darina [25.2K]3 years ago
6 0
It should be 4. An alternator
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densk [106]

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Touching the stove and getting burned, ice melting in your hand

Explanation:

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If you do 1500 J of work hoisting a 20 kg bale of hay , to what height did you lift it
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A constant force is applied to an object, causing the object to accelerate at 10 m/s^2. What will the acceleration be if: a) The
Liula [17]
What you need to know is that the force is

F=ma

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a=F/m

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a=\frac{F}{2m}

So the accelaration will also he halved (it's the original acceleratation divided by 2)


 b) The object's mass is halved?
a=\frac{F}{m/2}=a=\frac{F2}{m}

which is the original acceleration times two!! so it will double


c) The force and the object's mass are both halved?
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a=\frac{F/2}{m/2}=a=\frac{2F}{2m}=a=\frac{F}{m}

so they will cancel each other out and the acceleration will stay the same!











5 0
2 years ago
Are you country or are you city?
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Answer:

Neither lma0 I'm from a town :P

Explanation:

Hbu?

Have a nice dayyy <3

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