What material would make the best heating element for an electric range?

a.
a resistor, which converts some electric energy to thermal energy

b.
an insulator, which stops the flow of electricity

c.
a conductor, which carry electric currents

d.
a conductor surrounded by an insulator

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure