# Help with conversion of equation

1. Jun 10, 2005

### maverickmathematics

Hey guys, I'm trying to convert this equation into terms of y

Q = C (of v) ^n
Q = C (of rho.v) ^ y

v is the veloctiy and rho v is the flow of a material although that doesn't really matter. C is a contant, and rho is equal to 1.42.

When i write of v - i mean if writing it out on paper i would write C with a little v beneath it - the same with rho v.

Dots mean multiplication.

Please help me soon i'm sure i'm being dense but need help!! Also my value for rho might be wrong!

Regards,

M

2. Jun 12, 2005

### maverickmathematics

Please Help!!

3. Jun 12, 2005

### whozum

$$Q = C_v ^n$$
$$Q = C_v ^ y$$

Solved for y?
Just use logarithms.

4. Jun 12, 2005

### maverickmathematics

Whozum -
in the first equation, it is C of v as you wrote
but in the second equation, it is C of rho times v

So logarithms cannot be used can't they?

Regards,

M

5. Jun 12, 2005

### whozum

That doesn't make sense. The subscript is used to identify or elaborate on the variable, it doesn't hold any mathematical informaiton.

6. Jun 12, 2005

### p53ud0 dr34m5

$$Q=C_{\rho*v}^y$$
i agree with whozum. you should just use logarithms. it doesnt matter about the subscript.

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