Students perform an experiment to collect data that that can be used to determine the density of an unknown liquid. they have a tall cylinder containing the liquid and some cubes of different sizes but the same known mass mthat all sink in the liquid. they only have a meterstick and a stopwatch to take measurements (a) describe a procedure the students could use to collect the data needed to create a graph that can be used to determine the density of the budincluding the measurements to be taken and any steps to reduce experimental uncertainty

How does convection affect our atmosphere? our layers of earth? our oceans?

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning