An AU, or astronomical unit, is the distance between the Sun and the Earth. An AU is about 149,600,000 km.
The planet Venus is about 0.72 AU from the Sun. What is the average distance of Venus from the Sun in kilometers? |
The average flow rate of a kitchen faucet is about 8.3 liters per minute.
An Olympic-sized pool can hold about 2,500,000 liters of water. Approximately how many months would it take to fill up an Olympic-sized pool with a kitchen faucet? |
The Bugatti Veyron's top speed is about 408.84 km/h (254.04 mph) and costs around $2 million.
A typical top speed of a bicycle is about 40 km/h (25 mph) and costs about $1,000 for a nice one. What is the ratio of bicycle to Bugatti in terms of speed per dollar? |
A billion is a large number. For example, a billion seconds add up to about 32 years!
An average annual income of a full-time worker in the U.S. in 2018 was about $50,000. How many years would it take for this worker to make $1 billion? |
A human brain can compute at a rate of 2.2 billion megaFLOPS.
A cat's brain can compute at a rate of 61 million megaFLOPS. What is the computing rate of humans to cats? |
A human brain can store about 3.5 quadrillion bytes of data.
A cat's brain can store about 98 trillion bytes of data. What is the brain storage capacity of humans to cats? |
As of April 2020, the U.S. National Debt per citizen is about $72,000, while the debt per taxpayer is about $191,000.
There are 330,515,290 U.S. citizens as of March 31, 2020. How many taxpayers are there in the U.S. based on the numbers above? |
Apple came out with the iPhone 2G in 2007. The 8 GB model sold for $599 when it first came out.
In 2020, Apple will sell the iPhone 11 with 256 GB for $849. What is the ratio of dollar per GB of the iPhone 2 to the iPhone 11? |