Can somebody please explain how a compass can be used to find North?

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.

Which is not true about oxygen-17 and oxygen-18?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest