Assignment 1 - Density

Please read Sections 2.1 - 2.3 before doing this Assignment

Please provide the best answer for each of the questions below.

1. The density of water is 1.0 gram per cubic centimeter. The density of gasoline is 0.7 grams per cubic centimeter. The two liquids do not mix. If you pull into a gas station  with 3 gallons of gas in the tank of the car and somehow pump water into your gas tank, what will happen? (please note: gas leaves the tank for the engine from the bottom of the tank)

2. Mercury has a density of 13. 6 grams per cubic centimeter. Iron has a density of 7.9 grams per cubic centimeter. If you place an iron cannon ball into the vat of mercury will it (a) sink to the bottom (b) float in the center of the vat or (c) float near the top of the vat? Why?

3. Using the table of densities below answer the following question:

In Arkansas and some other places there are natural diamonds lying around on the surface of the ground. Explain how you could quickly separate diamonds from a shovelful of common gravel containing mostly quartz and feldspar, using a liquid of appropriate density. Write your answer carefully, detailing the steps. Please use the chart below to answer this question.

4. What is the oblateness of a watermelon  with a length of 15 inches and a diameter of 10 inches? Remember the formula for oblateness: Ob = (max - min) / (max + min) x 100   We express oblateness as a percent.