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along long long long time
6 hours.
If there are enough nutrients in the water, a plant can live on indefinately under artificial light. Just light and water alone would not be enough to support the plant for very long.
Proxima Centauri is 4.2 light years away, so it would take 4.2 years for light from that star to reach us.
4.37 years.
6
Solar home lighting, though more expensive to install is more cost effective to light your home with in the long run than most other ways to light your home.
along long long long time
The Moon is about 1.4 light-seconds away.
14 Billion years
How long will depend on the velocity. The closest star would be 4.24 light years away
If you are referring to the light bulb that goes into the flood light, they usually last 3-6 months. You can always install a motion activated one to extend the life of the bulb.
bananas
Light years.
Its suddenly seems that your computer can't keep up and the drive light is flickering like crazy, it's probably to install a new ram witch can take 5-15 minutes
The time is would take a contractor to install a handicapped chair lift would depend on their experience. One that is experienced in the business could successfully get a chair lift installed in a couple of hours.
Not long. Just download xampp and run the installation.