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What is a black hole?
A region where gravity is so strong that nothing, not even light, can escape. view more
Latest Questions
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Who was the first US President?
George Washington (1789-1797) Served two terms. view more
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What is compound interest?
Compound interest is interest calculated on both your initial principal and the accumulated interest from previous periods. view more
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How do you convert 0.625 to a fraction?
0.625 = 5/8 Step by step: 1. view more
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What is an array?
An ordered collection of values in a single variable. view more
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How do you solve 2x + 5 = 13?
x = 4 Step by step: 1. view more
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What is the square root of 144?
The square root of 144 is 12. view more
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What is supply and demand?
The economic principle that determines prices. view more
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What is the acceleration due to gravity on Earth?
9.8 m/s² (or 32.2 ft/s²) This means a falling object increases speed by 9.8 meters per second every second (ignoring air resistance). view more
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What does BPM mean?
BPM stands for Beats Per Minute and measures how fast a piece of music is. view more
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What is the Pythagorean theorem?
a² + b² = c² Where: - a and b are the legs (shorter sides) - c is the hypotenuse (longest side, opposite right angle) Example (3-4-5 triangle): 3² + 4² = 9 + 16 = 25 = 5² view more
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What do mitochondria do?
Produce ATP (energy) through cellular respiration. view more
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How far is the Moon from Earth?
384,400 km (238,855 miles) average Variation due to elliptical orbit: - Closest (perigee): 356,500 km - Farthest (apogee): 406,700 km Light takes ~1.3 seconds to travel from Moon to Earth. view more
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What is HTML?
HyperText Markup Language The standard language for creating web pages. view more
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What is the cube root of 27?
The cube root of 27 is 3. view more
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What is a normal resting heart rate?
A normal resting heart rate for adults is between 60 and 100 beats per minute (BPM). view more
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What is Newton's Third Law?
For every action, there is an equal and opposite reaction. view more
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What is 25% of 200?
25% of 200 is 50. view more
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What is the area of a triangle?
Area = ½ × base × height The height must be perpendicular to the base. view more
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How much water should you drink daily?
The common recommendation is 8 glasses (about 2 liters or 64 ounces) per day, though individual needs vary. view more