MATHEMASCIAN QUIZ CONTEST

QUIZ CONTEST9 questions will be allotted for this round.Each question will be read twice.You will have 10 seconds to answer each question.The timer will start after the second reading of the question.Every correct answer will gain 5 points.EasyRoundQuestion #1Time starts now...910876543210Which has the larger density, an ounce of uranium or a pound of uranium?Question #2Time starts now...910876543210 When a silk cloth is used to charge a glass rod, the glass rod obtains a net positive charge. Thus the silk cloth has a net _____________ charge.Question #3Time starts now...910876543210In the Rutherford model of the atom, nearly all the all of the volume occupied by the atom consists of _____________a. protons.b. neutrons.c. a vacuum.Question #4Time starts now...910876543210The North poles of two magnets will ____________a. repel each otherb. attract each otherc. sometimes attract and sometimes repel each otherQuestion #5Time starts now...910876543210A strong magnet attracts a thumbtack with a 100 N force. The force that the tack exerts on the magnet is equal to _____________Question #6Time starts now...910876543210If you push for 20 minutes on a stationary wall with a force of 5 Newtons, the work that you do is _________________ J.Question #7Time starts now...910876543210An object has a velocity toward the south. If a force directed toward the south acts on the object, it will cause the kinetic energy of the object to?a. increaseb. decreasec. remain the sameQuestion #8Time starts now...910876543210A woman with a mass of 50 kg climbs a set of stairs that are 3 m high. How much gravitational potential energy does she gain?a. 50 Jb. 150 Jc. 450 Jd. 1500 JQuestion #9Time starts now...910876543210A bowler lifts a bowling ball from the floor and places it on a rack. If you know the weight of the ball, what else must you know in order to calculate the work she does on the ball?EasyRoundEnd ofAverageRoundMECHANICS4 questions will be allotted for this round.Each question will be read twice.You will have 15 seconds to answer each question.The timer will start after the second reading of the question.Every correct answer will gain 10 points.AverageRoundQuestion #110

48167529314121513110Time starts now...At which point in the swing of an ideal pendulum (ignoring friction) is the kinetic energy a maximum?a. at either end.b. at the lowest point.c. It's always the same.Question #210

48167529314121513110Time starts now...What is the momentum change of a 1,400 kg car traveling at 20 m/s when it is brought to rest in 2.0 s?Question #310

48167529314121513110Time starts now...If a marathoner can run with an average speed of 10 mi/hr, how far could she run in 120 min?Question #410

48167529314121513110Time starts now...At an average speed of 125 mi/hr, how long would it take a race car to complete a 500-mile race?End ofAverageRoundMECHANICS2 questions will be allotted for this round.Each question will be read twice.You will have 20 seconds to answer each question.The timer will start after the second reading of the question.Every correct answer will gain 15 points.

Question #110

48167529314121513112018191716Time starts now...0In the ideal gas law (PV=NkT or PV=nRT) the temperature T is measured in ______________ . Question #210

48167529314121513112018191716Time starts now...0To the nearest degree, what is absolute zero on the Celsius scale?26ANSWERDWythevilleQuestion #310

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Which aspect of this rock formation occurred most recently?ANSWERAdeposition of rock layers labeled AQuestion #410

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The diagrams show that as life forms changed on Earth so did the composition of the atmosphere. The correct order of these changes over geologic time is:ANSWER3, 2, 4, 1Question #510

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Which of these stars has completed its life cycle?ANSWERBlack dwarfDifficultRoundEnd ofclincherQuestion #110

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