Which choice is a potential drawback of nanotechnology? Check all that apply. Ideas might not work.
Research is expensive.
There is high demand for new technology.
Building and applying nanotechnology is time consuming.
There might be unknown health effects.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

When does your body conduct current more readily?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire