PhysicsLAB AAPT Quiz
PhysicsBowl 2022 (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. A 20,000 kg truck is traveling at 25 km/hr. At what speed does a 1000 kg car need to travel to have the same kinetic energy as the truck?
 
2. Who was the last person to walk on the Moon?
 
3. Two bodies of equal mass are moving in circular paths at equal speed. The first body moves in a circle whose radius is twice that of the second. The ratio of the radial acceleration of the first body to that of the second is:
 
4. A bullet with a mass of 5.0 g is fired horizontally into a 2.0 kg wooden block which is resting on a horizontal table. The bullet stops in the block and the block and bullet combination move 2.0 m. The coefficient of kinetic friction between the block and
surface of the table is 0.2. Find the initial speed of the bullet.
 
5. A car is moving along a straight horizontal road at a speed of 20 m/s. The brakes are applied and a constant force of 5000 N brings the car to a stop in 10 s. What is the mass of the car?
 
6. Two forces have magnitudes of 11.0 N and 5.0 N. The magnitude of their sum could NOT be equal to which of the following values?
 
7. Which of the following colors of visible light has the longest wavelength?
 
8. An increase in the translational motion of the molecules of a gas confined in a steel tank will be observed in one of the following ways. It will produce an increase in:




 
9. When descending mountain roads, large trucks pulling a heavy load can burn up the brakes. Once the brakes are no longer useful, the driver may need to guide the truck up a “runaway truck lane” on the side of the road. The runaway truck lane is directed uphill and often has a thick layer or sand or gravel or both on the surface. Which of the following is one of the reasons the truck will stop?




 
10. A 4.0 kg mass at the end of a spring moves with simple harmonic motion on a horizontal frictionless table with a period of 2.0 s and an amplitude of 2.0 m. Determine the maximum force exerted on the spring.
 
The following information is to be used for Questions #11 & #12:
 
The James Webb Space Telescope was launched on December 25, 2021 and arrived at its destination, LaGrange Point 2, on January 24, 2022. This point is approximately 1,500,000 km from the Earth and it is where the telescope will orbit the sun.
 
11. What was James Webb’s former occupation?




 
12. How long will it take the radio signal sent by the James Webb Space Telescope to reach the Earth?
 
13. A car engine moves a piston with a circular cross-section of 7.500 cm in diameter a distance of 3.250 cm to compress the gas in the cylinder. By what amount is the gas decreased in volume?
 
14. A fisherman watches a dolphin leap out of the water at an angle of 35o above the horizontal. The horizontal component of the dolphin’s velocity is 7.7 m/s. Find the magnitude of the vertical component of the velocity.
 
15. Two simple pendula are 60 cm and 63 cm in length. They hang vertically, one in front of the other. If they are set in motion simultaneously, find the time taken for one to gain a
complete cycle of oscillation on the other.
 
16. If a copper wire is stretched to make it 0.1% longer, what is the percentage change in its resistance?
 
17. A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is:




 
18. In the last one second of a free fall, an apple traveled three-fourths of its total path. From what height did the apple fall?
 
19. A helicopter with a mass of 700 kg will hover when its rotating blades move through an area of 50 m2. Find the average speed imparted to the air (density of air = 1.3 kg/m3)
 
20. A refrigerator has a mass of 150 kg and rests in the open back end of a delivery truck. If the truck accelerates from rest at 1.5 m/s2, what is the minimum coefficient of static friction between the refrigerator and the bed of the truck that is required to prevent the refrigerator from sliding off the back of the truck?
 
21. Three blocks (m1=1 kg, m2=2 kg, m3=3 kg) connected by cords are pulled by a constant force, F, of 18 N on a frictionless horizontal table. T2 is the tension in the rope between m2 and m3. What is T2?
 
 
22. An object starting from rest moves on a circular path with a radius 40 cm and a constant tangential acceleration of 10 cm/s2. How much time is needed after the motion begins for the centripetal acceleration of the object to be equal to the tangential acceleration?
 
23. The distance between the electron and the proton in the hydrogen atom is about 0.53 x 10-10 m. By what factor is the electrical force between the electron and proton stronger than the gravitational force between them?
 
24. A 3.00 kg bucket of water is raised with an upward acceleration of 2.20 m/s2 from a well by means of an attached rope. What is the tension in the rope?
 
25. Two light waves, initially emitted in phase, will interfere constructively with maximum amplitude if the path-length difference between them is:
 



 
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