Solar powered radios will last far longer than wind-up radios, provided there is adequate sun.
Solar powered is definitely the way to go if you are in a place with adequate sun shine. If not then i would look into lithium battery ones that will last a long time. Also led's last longer than florescent and halogen.
Yes as long as both the 2450 mAh battery and 600 mAh battery have the same voltage. The larger one will just last longer and take longer to charge up (I am assuming these are the solar powered type lights).
Yes natural fuels like solar power is renewable because its powered by sun which will last millions of years
The lunar eclipse lasts longer than a solar one
There's no such thing as "inexhaustible energy". However, the Hubble is powered by solar cells, and the Sun is expected to last billions of years longer than the Hubble itself, so as far as the telescope is concerned it's "inexhaustible".
gas engines go faster that the batter powered engines and last longer (dont have to charge gas)
Planes are much easier to control and so will last longer.
Nothing. The sun charges their solar powered things during the day and that's enough power to last all night until the sun comes out to charge it again.
Radio waves from radio broadcasts last week have been travelling at the speed of light for one week. This means they are now leaving the solar system, out past the planets, past the kuiper belt and the sacttered disc. They are between the heliopause (limits of the solar wind) and the Oort cloud (cloud of local comets). They won't reach the nearest star for a little over four years.
A broncolor flashlight is powered by batteries or power packs depending on which model you buy. They also have lights that are run on solar energy that last for two hours.
Solar powered lights are lamps with small solar panels mounted on top that recharge a usually triple AAA (not included) Ni-Cad battery. The light is a LED which uses very little juice and in theory will last for months maybe even years. It depends on where you live in that rainy areas cause the battery to corrode onto the contacts. Other than that a cheap alternative to outside lighting
65000 miles is not bad for a 1997. Diseal engines usally last longer than gas powered engines