# PHYSICS - please help!!!

posted by
**sam** on
.

In the product F = qv · B , take q = 4,

v = 2.0i + 4.0j + 6.0k and F= 136i -176j + 72k.

What then is in unit-vector notation if Bx = By?

I still can't get the right answer though...

I am stuck here:

136i-176j+72k=(8i+16j+24k)x(Bxi+Byj+bzk)

How do I solve for Bxi + Byj + Bzk???

Everything that I have tried is incorrect. Please help. thanks.

that should be F=qv x B. not dot product.

thanks, i figured it out.