Calculation: X706kp - 1

F  = 
 
 μ* μ0* I1* I2* l
/ ( 2* π* r)
F =  
 μ* μ0* I1* I2* l
/ ( 2* π* r)
$$F$$ = $$\frac{\mu\cdot \mu0\cdot I1\cdot I2\cdot l}{2\cdot \pi\cdot r}$$
F =  
 I1* I2* l* μ* μ0
/ 2/ r/ π
$$F$$ = $$\frac{I1\cdot I2\cdot l\cdot \mu\cdot \mu0}{2\cdot r\cdot \pi}$$
F =  
 0.5* I1* I2* l* μ* μ0
/ r/ π
$$F$$ = $$\frac{0.5\cdot I1\cdot I2\cdot l\cdot \mu\cdot \mu0}{r\cdot \pi}$$