What's the density of copper (in g/cm³)?
What is the population of the United States?
What's the average speed of the Mississippi River?
What's the speed of the fastest recorded baseball pitch?
What's the average size of a car parking space?
What's the average upload speed of 4G LTE?
What's the average thickness of the Earth's crust?
What's the average wattage of a household microwave?
What's the market cap of Intel?
At what speed does light travel in a vacuum?
How long is the Great Wall of China?
What's the average speed of a rabbit?
How much electricity does the average solar panel generate?
What's the average growth rate of human hair?
What is the market capitalization of Apple Inc.?
What's the diameter of a basketball?
What is the total length of the human circulatory system?
What's the average temperature of the surface of the Sun?
How long does it take for the Moon to rotate once on its axis?
How many gallons of paint are needed to paint the White House?
How much caffeine is in a typical cup of coffee?
What's the average annual budget for a small business in the U.S.?
How many bricks are in the Great Wall of China?
How much does the average bicycle weigh?
How much water does the average person drink per day?