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