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Is it cheaper to leave a fluorescent light on or switch it on and off?
Always cheaper to switch it off and on rather than leaving it on.
Does leaving the light switch up but turning off the light with the string on the fan run up the light bill?
No, you only pay for the power used. Light on you pay, light off no cost.
If you are 11 years old now how old will you be when light that is leaving today reaches earth?
One light-year is about 9 trillion kilometers.Arcturus is a star that is 37 light-years from Earth.
Which area is affected by decreased amounts of ozone?
area 4: more UV light reaches the earth causing damage to organisms <3
Why did John Henry Holmes invent the light switch?
John Henry Holmes did not invent the light switch! Light switches were in use well before his invention. What he invented was a light switch that did not develop a sustained arc on opening or closing, this arc would damage the switch contacts causing early failure. He used a design called "quick-break" that opened and closed the contacts much faster then earlier light switches.
How long will it take for light rays leaving the sun to reach mars?
it will take 1.5 times longer for light from the sun to get to mars than to get to earth
The sun os about 90 millionfor earth approximately how long does it take for light leaving the sun to get here?
It takes light 8 minutes to get to the earth. (Actually it's 8 minutes and 20 seconds).
Does the sunlight takes 4 minutes to reach earth?
No. Four minutes after leaving the sun, the light has progressed only to an areabetween the orbits of Mercury and Venus. The journey from sun to earth at thespeed of light is about 8minutes and 20seconds.
What is a stop light switch?
It is the brakes light switch
Where is brake light switch?
where is brake light switch
How do you connect an ON-OFF switch to control the light?
To control a light with a switch, the switch has to be connected in series with the light fixture.
Why theres a light bulb on youtube logo?
I think it is about earth day.... were the world switch off there lights for an hour
