Astudent wants you to demonstrate that an electric current will produce a magnetic field. which set of objects could be used to demostrate this?
a. a battery, a coil of wire and a compass. eliminateb)a compass, some paper clips and a battery.
c. a battery, an iron nail and a long copper wire.
d. an iron nail, a permanent magnet and a battery.

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane

Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages

5volt is supplied to an electrical circuit. if the resistance of the circuit is 2.5ohms ,calculate the current flowing through the circuit.