The Standard Kilogram Is a Platinum-Iridium Cylinder 39 Mm in Height
The standard kilogram is a platinum-iridium cylinder 39 mm in height and 39 mm in diameter.What is the density of the material?
A 2.00 m by 3.00 m plate of aluminum has a mass of 324 kg.What is the thickness of the plate? (The density of aluminum is 2.70 103 kg/m3. )
What is the mass of air in a room that measures 5.0 m 8.0 m 3.0 m? (The density of air is 1/800 that of water).
The basic function of a carburetor of an automobile is to atomize the gasoline and mix it with air to promote rapid combustion.As an example,assume that 30 cm3 of gasoline is atomized into N spherical droplets,each with a radius of 2.0 105 m.What is the total surface area of these N spherical droplets?