If a 1.0 mm thick piece of plastic sheeting is being placed around a ball to mass of Earth's atmosphere, what is the diameter of the ball needed to mo 1.2756 x 10 km for the Earth's diameter and 12 km for the thickness of 7 Earth's atmosphere. Express the answer in standard scientific notation.

The density of ordinary air is 1.19 g/L. What is the mass, in kilograms, of the airin a room that measures 14.5 ft x 16.5 ft x 8.0 ft?(Hint: Density is defined as d= m/v, so you need to find the volume of the roomand solve for the mass in the density equation. Make sure you do the appropriateconversions to carry out your operations. Use the correct number of significantfigures to express your answer).

Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.5 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the individual spheres) equal to the surface area of a cube 1.2 m on an edge?

Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume?

- Your answer is partially correct. A partly-full paint can has 0.515 U.S. gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If all the remaining paint is used to coat a wall evenly (wall area = 12.1 m²), how thick is the layer of wet paint? Give your answer in meters. (a) Number i 1.949 (b) Number i 312.1 Units Units m^3 m^2

(a) A pyramid has a height of 465 ft and its base covers an area of 12.0 acres (see figure below). The volume of a pyramid is given by the expression V = 1 3 -Bh, where B is the area of the base and h is the height. Find the volume of this pyramid in cubic meters. (1 acre = 43,560 ft²) 2294276.22 m³ (b) What If? If the height of the pyramid were increased to 520 ft and the height to base area ratio of the pyramid were kept constant, by what percentage would the volume of the pyramid increase? 99.95 X %

One cm3 of gold is 19.32 g. What is the density (ratio of mass to volume) of gold inkg per m3 ?  I know the answer is 19.32x10^3 but can someone tell me the steps to get there?

the average density of an atom is approximately 103 kg/m3. The nucleus of an atom has a radius about 10-5 times that of the entire atom, and contains nearly all the mass of the atom.  What is the approximate density, in kilograms per cubic meter, of a nucleus?

NASA The radius of the planet Saturn is 5.85 × 107 m, and its mass is 5.68 x 1026 kg (Fig. P1.48). (a) Find the density of Saturn (its mass divided by its volume) in grams per cubic centimeter. (The volume of a sphere is given by (4/3) 3.) (b) Find the area of Saturn in square feet. (The surface area of a sphere is given by 4πr².) Figure P1.48 A view of Saturn.

Physics Question: A bottle of wine known as a magnum contains a volume of 1.5 liters. A bottle known as a jeroboam contains 0.792 U.S. gallons. How many magnums are there in one jeroboam?