A device on the end of a crane to lift cars and junk
It will pick up the nails the same way a bar magnet would do!
The amount of voltage needed to lift a car with an electromagnet depends on several factors. The size of the coil, as well as the amperage will need to be factored in to know how much voltage will be used.
Most metals. eg Aluminium, copper, tin, uranium
A DNS server would most likely be used first by a network client in a corporate environment.
The Mercalli scale would most likely be used to measure earthquake damage.
Retail
As a source of energy.
Most likely it would be used in the pyrotechnics industry.
It would most likely white, as he would most like hav used canvas.
Spinning the loops on an electromagnet will not make it stronger. The strength of an electromagnet depends on factors such as the number of loops in the coil, the current passing through the coils, and the core material used in the electromagnet. Spinning the loops will not change these factors.
determine genetic relationships.
thermometer