PhysicsLAB AAPT Quiz
PhysicsBowl 2016 (Part 1)

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All Division I students, START HERE.
All Division II students – skip the first 10 questions, begin on #11.
*** Treat g = 10 m/s2 in ALL problems, #1-#50.

1. Which one of the following choices represents the smallest amount of time?
2. The position vs. time graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest speed?
3. A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleration of the car?
4. The following four length measurements are recorded: 5.4 × 10−1 m, 5.4 × 100 m, 5.40 × 101 m, and 5.400 × 102 m. Which one of the following choices best represents the sum of these values using the rules of significant digits?
5. In the figure shown, the mass m = 6.0 kg and the mass M = 14.0 kg are stationary. The mass M rests on the floor. Which one of the following choices represents the tension in the string connecting the masses?
6. An object, thrown straight downward with a speed of 20.0 m/s, takes 2.00 s to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.
7. Three cylindrical resistors are made of the same material. The length and radius of each resistor is:
Which one of the following choices correctly ranks the resistance of these resistors (R1, R2, R3)?
8. In the history of physics, the names Nicolaus Copernicus, Galileo Galilei, James Clerk Maxwell, and Isaac Newton are very recognizable. Which one of the following choices correctly orders these names chronologically by the approximate dates of each person’s scientific work (ending with the most recent)?

9. In the circuit shown, an electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the electric field through the interior of the resistor?
10. A person wishes to accelerate an object upward uniformly. Which one of the following choices must be true of the force, F, provided by the person onto the object? W represents the magnitude of the gravitational force acting on the object. Ignore any effects of the air or of the Earth’s rotation.

All Division 1 students continue to question #40.
All Division 2 students START HERE. Numbers #1 – #10 on your answer sheet should be blank. Your first answer should be for #11.
*** Treat g = 10 m/s2 for ALL questions #1 – #50.

The next two questions share the same information Base your answers to questions 11 and 12 on the information and diagram below.

A 12.0 N net force directed to the right is exerted on a 3.0 kg block for 5.0 s. The block was initially at rest and slides on a horizontal surface.
11. What is the speed of the block at the end of the 5.0 s interval?
12. What is the kinetic energy associated with the block after the 5.0 s interval?
13. For the inclined plane shown, which one of the following choices best represents the value of the incline’s ideal mechanical advantage?
14. A scientist obtains an answer that has units equivalent to those from computing the square root of the ratio of the Universal Gravitational constant to Coulomb’s constant. Which one of the following choices has these same units?

15. A radio station broadcasts its signal at a frequency of 100.0 MHz. What is the wavelength of the station’s signal
16. A uniform stick is fixed to rotate about an axis through its center. The stick starts from rest and rotates through an angle of 90° in a time of 1.0 s. If the angular acceleration of the stick is constant, what is the angular speed of the stick about its rotation axis after one full revolution?
17. “All planets in the solar system follow elliptical orbits with the Sun located at one focus of the ellipse.” This statement is best summarized by which one of the following choices?

18. For any motion in two dimensions, which one of the following choices identifies quantities that must have the same direction?

19. An ideal gas in a sealed container with 1.20 × 1024 particles has a pressure of 1.0 atm at a temperature of 27.0 ºC Which one of the following choices best represents the volume of the container?

20. A uniform 10.0 m long plank is pivoted about its center of gravity. A mass M1 then is placed at the left edge of the plank and a second mass M2 is placed 1.0 m from the right end. This system is in static equilibrium (shown). If each mass now is moved 2.0 m closer to the center of the plank, which one of the following choices best describes the subsequent motion of the plank?

21. At 1.94 s after launch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?
22. For the following nuclear reaction, which one of the following choices correctly identifies the quantity labeled X?
23. At a party, two spherical balloons are expanded to have the same radius. Balloon #1 is filled with helium gas while balloon #2 is filled with xenon gas. Which one of the following statements about the buoyant forces on the balloons is correct?

24. A proton moves with constant non-zero velocity in a region of space that has a uniform magnetic field directed into the plane of the page. The proton moves directly up the plane of the page. What is the direction of the electric field in this region of space? Ignore gravity.

25. The plates of a large parallel-plate capacitor are separated by a distance of 0.05 m. The potential difference between the plates is 24.0 V. A charge released from rest between the plates experiences an electric force of 1.00 N. What is the magnitude of the charge released between the plates?

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