A block of wood measures 3 cm X 2 cm X 1 cm and has a mass of 4.27 g. What type of wood is this block made of? Justify
your answer. D=m/v

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

What is the mass of the same rock on the earth