Of course there are. Cooking, cleaning and ironing immediately spring to mind, but I'm sure there are others.
As for women being better at multitasking, that is true. Women can do lots of things badly, men are only capable of doing one thing well at a time.
1/f=1/u+1/v <<note that the left hand side of the equation is a constant for any mirror.
Therefore, the two equations will be equal and you don't actually need to calculate the focal distance:
1/19+1/-24=1/f=1/12+1/d where d is the distance of the image.
Hence 1/19+1/-24=1/12+1/d
I'll...
You have probably havesheared the wires away from the plug and, as the plugs are usually part of the wire, you will need to replace them. You must either remake the plugs by cutting back the wires and re-soldering some new ones on or buy a new 3.5mm stereo to stereo lead, cut it in half and...