Inside a windowless room there are three light bulbs Outside the room there are three light switches Each of the light switches outside the room controls one of the three bulbs inside the room You?

Switch first bulb for few min and then turn it off. Switch on the second one and then go to the room with switches.. one will be warm, other two will be lit and off. I hope rest is easy.

turn 2 switches on wait one minute, turn one off go in the room if the bulb is off and warm it was the last one you turned off if its cold its the one you didnt touch and if its on its the only...

Is that really meant to be a question? It is like saying"There are six wheels on a car: four road wheels, a spare wheel and a steering wheel?" Please explain what you want to know and someone may be...

If a room is extremely well insulated and the wattage of the bulb is greater that the wattage heat loss then, yes a light bulb can heat up a room. The time that it takes to heat up a room would be...

You turn on two switches wait 5 min. and turn one of the switches off! go in the next room the cold one belongs to the switch you never turned on..the warm one the switch you only left on 5 min and...