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Science & Nature

5,023 questions • Page 23 of 72

# Question Answer
1541 Which of these Cherry MX mechanical keyboard switches is both tactile and clicky? Cherry MX Blue
1542 What is known as "the brain" of the Computer? Central Processing Unit
1543 Which virtual assistant is developed by Amazon? Alexa
1544 Microphones can be used not only to pick up sound, but also to project sound similar to a speaker. True
1545 Who built the first laser? Theodore Harold Maiman
1546 Which company developed the Hololens? Microsoft
1547 The Western Electric Model 500 telephone uses tone dialing to dial phone numbers. False
1548 Which of the following cellular device companies is NOT headquartered in Asia? Nokia
1549 What does GPS stand for? Global Positioning System
1550 Which buzzword did Apple Inc. use to describe their removal of the headphone jack? Courage
1551 Which of the following is used to measure blood pressure? Sphygmomanometer
1552 Who patented a steam engine that produced continuous rotary motion? James Watt
1553 What is the "Mitsubishi Wakamaru"? A robot
1554 During the early parts of the Vietnam War the M16 had a record for having bad reliability True
1555 Which of the following is not a type of computer mouse? Smoothie mouse
1556 Which gaming console is developed by Sony? PlayStation
1557 What is the name of a simple machine that is made up of a stiff arm that can move freely around a fixed point? Lever
1558 In what year was the Oculus Rift revealed to the public through a Kickstarter campaign? 2012
1559 Mobile hardware and software company "Blackberry Limited" was founded in which country? Canada
1560 Which round does a WW2 M1 Garand fire? .30-06
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1561 What round is a classic AK-47 chambered in? 7.62x39mm
1562 Which company designed the "Betamax" video cassette format? Sony
1563 When was the Tamagotchi digital pet released? 1996
1564 What does SSD stand for in the context of computer storage? Solid State Drive
1565 When was the iPhone released? 2007
1566 Which company manufactured the iconic TR-808 drum machine? Roland
1567 What are the base station trackers used for the HTC Vive called? Lighthouse
1568 What is the most significant side venture the popular firearms company, Remington, has pursued? Typewriters
1569 The communication protocol NFC stands for Near-Field Control. False
1570 The term "battery" to describe an electrical storage device was coined by? Benjamin Franklin
1571 Out of all of the NASA Space Shuttles, which 2 have been destroyed in disasters? Challenger and Columbia
1572 When did the CD begin to appear on the consumer market? 1982
1573 Which of the following is the standard THX subwoofer crossover frequency? 80 Hz
1574 When was the DVD invented? 1995
1575 What numbers are in the 5th row of Pascal's Triangle? 1 4 6 4 1
1576 What shape does sin(x) or cos(x) make on a graph? Waves
1577 What is the plane curve proposed by Descartes to challenge Fermat's extremum-finding techniques called? Folium of Descartes
1578 L'Hôpital was the mathematician who created the homonymous rule that uses derivatives to evaluate limits with indeterminations. False
1579 How many zeros are there in a googol? 100
1580 The proof for the Chinese Remainder Theorem used in Number Theory was NOT developed by its first publisher, Sun Tzu. True
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1581 In the complex plane, multiplying a given function by i rotates it anti-clockwise by how many degrees? 90
1582 What is the area of a circle with a diameter of 20 inches if π= 3.1415? 314.15 Inches
1583 Which greek mathematician ran through the streets of Syracuse naked while shouting "Eureka" after discovering the principle of displacement? Archimedes
1584 To the nearest whole number, how many radians are in a whole circle? 6
1585 How many sides does a heptagon have? 7
1586 The binary number "101001101" is equivalent to the Decimal number "334" False
1587 What is the first Mersenne prime exponent over 1000? 1279
1588 Which of these probability distributions is NOT discrete? Normal
1589 Integration is the reverse of what mathematical operation? Derivation
1590 The French mathematician Évariste Galois is primarily known for his work in which? Galois Theory
1591 Which of the following famous mathematicians died in a duel at the age of 20? Galois
1592 How many books are in Euclid's Elements of Geometry? 13
1593 A scalene triangle has two sides of equal length. False
1594 What prime number comes next after 19? 23
1595 What is the approximate value of mathematical constant e? 2.72
1596 How many Millibars (mbar) to 1 Inch of Mercury (inHg) 33.9
1597 Which of the following mathematicians made major contributions to game theory? John Von Neumann
1598 You can square root a negative number with an imaginary number "i". True
1599 What Greek letter is used to signify summation? Sigma
1600 What is the derivative of sin(x) cos(x)
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1601 The metric prefix "atto-" makes a measurement how much smaller than the base unit? One Quintillionth
1602 What's the square root of 49? 7
1603 Zero factorial is equal to zero. False
1604 In Roman Numerals, what does XL equate to? 40
1605 If you could fold a piece of paper in half 50 times, its' thickness will be 3/4th the distance from the Earth to the Sun. True
1606 What is the equation for the area of a sphere? (4/3)πr^3
1607 The set of all algebraic numbers is countable. True
1608 At what temperature does temp in °C equal temp in °F? -40
1609 A universal set, or a set that contains all sets, exists. False
1610 An equilateral triangle always has every angle measuring 60°. True
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