Use information on the endpapers of this book to calculate the average density of the Earth. Where does the value fit among those listed in Tables 1.5 and 14.1? Look up the density of a typical surface rock like granite in another source and compare the density of the Earth to it.

If the density of an object is 8.060 lb/ft3, then the density in SI units, is what? (1 lb = 454 g, 1 in = 2.54 cm, 1 ft = 12 in)

Is it the quantity of 8.21 cm, greater than, less than or equal to 821 mm? Please let me know and explain. Thanks

The hydraulic diameter of a rectangular duct is calculated using the equation D = 4, where Dr is the hydraulic diameter, A is the cross-sectional area of the duct and p is the perimeter of the duct. If the dimensions of the rectangular duct are a = 26 cm+0.4 mm, and b = 33 cm +1.3 mm, what is the uncertainty of D, in percentage format? Enter the answer as a numerical value without any sign. Retain 3 significant figures. a

The area of a well is 700cm2. what is the radius?

One gallon of paint (volume = 3.78 × 10-³m³) covers an area of 25.0m². What is the thickness of the fresh paint on the wall?

An element makes up 0.0021% of the Earth's continental crust by mass. Express this in ppm (parts per million), to an appropriate number of significant figures

Example 3: How many one-gallon milk jugs would need to be emptied in order to fill up a shallow rectangular lake that is 4.00 km long, 1.88 km wide, and 226 cm deep? One gallon is 3760 cm³.

1. The floor of a rectangular building has an area of 120 square meter. The length of the floor / is 4m bigger than its width, w. Solve for I. Hint: Start with the equation of the area in terms of I. What kind of equation do you get? /= 48.11 X feet ! No, that's not the correct answer.

The density of aluminum is 2.7 g/cm3g/cm3. What is the mass of a cube of aluminum that is 5.000 cmcm on a side? (Recall that density is mass divided by volume.)