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