2)What is the weight density of water(lb/ft3 or N/m3)? 3)Explain the behavior of layers in the density column in relation to their specific gravities.

4)Calculate the mass density of a 2kg object with a volume of 0.00465 m3

5)Which substance in the chart on slide #5 has a density close to this?

6)Using that substance's density(from 4 and 5) calculate the specific gravity.

7)Would this substance sink or float in water? Explain why?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.