What is a bob in a pendulum?

A bob is the mass on the end of a pendulum found most commonly, but not exclusively, in pendulum clocks.

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Is 20 questions a yes or no game?

Only 20 questions are allowed, each phrased so that it may be answered "yes" or "no." The winner is the person who guesses the correct answer; if there is no correct guess, the answerer is the winner. The game may be played one against all or between two opposing teams. Correspondingly, what are yes and no questions called? polar interrogative Also known as a polar interrogative, a polar question, and a bipolar question, a yes-no question is an interrogative construction (such as, "Are you ready?") that expects an answer of either "yes" or "no." Wh- questions, on the other hand, can have a number of answers, and potentially more than one correct answer.

What are good random questions?

And now...for the most random questions ever! If You Had Three Wishes, What Would You Wish For? What Would You Rather Throw Away: Love Or Money? What's The Most Beautiful Place You've Ever Seen? What Was Your Fondest Memory Of High School? What's Your Favorite TV Show? What's The Strangest Thing In Your Refrigerator? Why is the pendulum important? It states that a body at rest, stays at rest and a body in motion stays in motion, unless acted on by an outside force. Pendulums provide proof of Newton's first law of motion.

Then, why was the pendulum clock invented?

In 1656 Dutch mathematician, astronomer, physicist and horologist Christiaan Huygens invented the pendulum clock in 1656 and patented it in 1657. This technology reduced the loss of time by clocks from about 15 minutes to about 15 seconds per day. Keeping this in consideration, is a pendulum a wave? A pendulum may be considered an example of Simple Harmonic Motion, but it can't be considered a wave due to its characteristics.