Heat engines use heat to do work. true or false.

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)