How many physicists to change a light bulb?
1, but it's only approximately changed, because it was assumed to be a sphere.
Hint: Physics jokes aren't funny!
An engineer, a physicist, and a mathematician all check into a hotel. By freak chance all wake up in the middle of the night to a fire in their wastebasket.
The engineer jumps up, grabs the fire extinguisher off the wall and sprays the fire, putting it out immediately.
The physicists jumps up, sees the fire extinguisher, runs over to the table, does a bunch of calculations, decides how much of the extinguisher to use and eventually puts out the fire.
The mathematician wakes up, looks over at the fire extinguisher and says, "AH! A solution exists!" and goes back to sleep.
(okay, it's not a physicist joke...
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