A piece of wood is measured to have 2 cm x 5 cm x 3 cm of volume.  Its mass is 20.0 g.  What is its density?

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery