What's the density of copper (in g/cm³)?

Approximately 8.96 g/cm³.

At what speed does light travel in a vacuum?

Approximately 299,792 kilometers per second (186,282 miles per second).

How long is the Great Wall of China?

Approximately 21,196 km (13,171 miles).

How many gallons of paint are needed to paint the White House?

About 570 gallons.

What is the total length of the human circulatory system?

About 100,000 kilometers (62,137 miles).

What's the average speed of a rabbit?

Up to 35 mph (56 km/h) in short bursts.

What's the average growth rate of human hair?

About 0.5 inches (1.25 cm) per month.

How much water does the average person drink per day?

About 2.4 liters (0.63 gallons).

What's the average size of a car parking space?

9 to 10 feet wide by 18 to 20 feet long (2.7 to 3 meters by 5.5 to 6 meters).

What is the market capitalization of Apple Inc.?

Approximately $2 trillion.

What is the population of the United States?

Around 331 million (as of the last known data).

How much does the average bicycle weigh?

20 to 30 pounds (9 to 13.5 kg).

What's the average temperature of the surface of the Sun?

About 5,500°C (9,932°F).

How much electricity does the average solar panel generate?

Around 250 to 400 watts per panel.

What's the average annual budget for a small business in the U.S.?

$30,000 to $150,000, varying widely by type and scale.

What's the average wattage of a household microwave?

600 to 1,200 watts.

What's the market cap of Intel?

Approximately $200 billion to $300 billion, fluctuating over time.

What's the average upload speed of 4G LTE?

2 to 50 Mbps (Megabits per second).

How much caffeine is in a typical cup of coffee?

About 95 mg per 8 oz cup.

How long does it take for the Moon to rotate once on its axis?

About 27.3 days (synchronous with its orbit).

What's the average speed of the Mississippi River?

About 1.2 miles per hour (1.9 km/h).

How many bricks are in the Great Wall of China?

Estimated to be over 3 billion.

What's the diameter of a basketball?

About 24.6 cm (9.7 inches).

What's the average thickness of the Earth's crust?

5 to 70 km (3 to 44 miles), varying between oceanic and continental.

What's the speed of the fastest recorded baseball pitch?

105.1 mph (169.1 km/h).