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# express the following physical quantities using prefix notation watch

1. and numbers between 1 and 999
4.8*10^-5 V
????? what???? plz help
2. (Original post by p29)
and numbers between 1 and 999
4.8*10^-5 V
????? what???? plz help
Not that you can rewrite that as 4.8 * 10^(-6) V = 4.8 "x"V.

Now what x can you think of that makes 4.8 xV = 4.8 * 10^(-6) V?

If you had 4.8 * 10^(-9) V you'd use 4.8 V for nano. In this case, it's...?
3. (Original post by Zacken)
Not that you can rewrite that as 4.8 * 10^(-6) V = 4.8 "x"V.

Now what x can you think of that makes 4.8 xV = 4.8 * 10^(-6) V?

If you had 4.8 * 10^(-9) V you'd use 4.8 V for nano. In this case, it's...?
ugh im so confused, the question also says there is no decimals allowed
4. (Original post by Zacken)
Not that you can rewrite that as 4.8 * 10^(-6) V = 4.8 "x"V.

Now what x can you think of that makes 4.8 xV = 4.8 * 10^(-6) V?

If you had 4.8 * 10^(-9) V you'd use 4.8 V for nano. In this case, it's...?
wouldnt you use n for nano as it equals 10^-9? instead of as it equals 10^-6
5. (Original post by p29)
wouldnt you use n for nano as it equals 10^-9? instead of as it equals 10^-6

And my previous post was wrong btw, I misread the question. It's 4.8 * 10^(-5). So change it to 48 * 10^(-6) V.

But you know that 10^(-6) V is the same as a micro Volt. So you can write it as

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