If some people think that the percentage of people drop litter everday is much lower than 93 percent , and then 10 people were asked if they drop litter everyday, what reasons are there that might not...
A flywheel is rotating at high speed. No energy is being supplied to it. The flywheel is used to turn a dynamo, and the energy from the dynamo is used to light a bulb. The bulb is left connected until...