Which career professionals are part of the architecture and construction career cluster? check all that apply.

a. civil engineers

b. carpenters

c. landscapers

d. plumbers

e. surveyors

f. civil drafters

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Hydrogen and helium are both members of?

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.