Which of these describes the heating element of a toaster oven?
a. a conductor surrounded by an insulator.
b. a conductor, which carries electric currents.
c. a resistor, which converts some electric energy to thermal energy.
d. an insulator, which stops the flow of electricity.

Which sound characteristic is not affected by the relative motion of an object

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation

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