PhysicsLAB AAPT Quiz
PhysicsBowl 2024 (Part 2)
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26. A 2.0-kg mass suspended from a vertical spring stretches it a distance of 5.0 cm. The mass is then pulled down a distance of 10 cm and released. What is the frequency of oscillation?
 
27. Mars has a mass of 6.46 x 1023 kg and a radius of 3.39 x 106 m. How much would a 65-kg person weigh on Mars?
 
28. A person with a mass m, falls from a height of h onto a crash mat. The speed of the person when they reach the mat is equal to:
 
29. When an inelastic collision occurs, the total kinetic energy of the colliding bodies…
 
30. A submarine emits a sonar signal to detect the distance to, and velocity of, a second nearby submarine. Which pair of wave behaviors is most closely associated with these two measurements?




 
31. A 2-cm thick wall separates two rooms with temperatures of 20 ΒΊC and 10 ΒΊC respectively. The wall has a thermal conductivity of 0.1 π‘Š/(π‘š)(𝐾) and a surface area of 10 π‘š2. What is the rate of heat transfer through the wall?
 
32. It is determined that a 500 mF capacitor loses half its remaining charge every second. If, after 5.0 s, its charge is q, what was its initial charge?
 
33. A top-fuel dragster starts from rest and accelerates at +17.0 π‘š/𝑠2 for 402 m. A parachute then opens behind the dragster to slow it down with an acceleration of -6.10 π‘š/𝑠2. How fast is the dragster moving 350 m after the parachute opens?
 
34. The relativistic equations for time dilation, length contraction, momentum, and energy are accurate…




 
35. An electrical circuit is constructed with a battery and four resistors as shown in the diagram below. What is the current measured by the ammeter shown in the diagram?
Β 
 
36. A beaker is filled with 800 mL of water. A wooden cylinder will be placed into the beaker. If the wood’s density is 800 π‘˜π‘”/π‘š3, what mass cylinder will raise the water level to the beaker’s maximum volume of 1000 mL?
 
37. A small sphere of mass m is attached to one end of a light string of length L with the other end of the string attached to a fixed point. The ball is moving at a constant speed v in a horizontal circle of radius r such that the string makes an angle ΞΈ with the vertical. Given that the tension in the string is T, what is the correct expression for the object's speed v?
 
38. Two objects both move and uniformly accelerate to the right. At time t=0, the objects are at the same initial position, but Object 1 has an initial speed twice that of Object 2. Object 1 has one-half the acceleration of Object 2. After some time, T, the velocity of the two objects is the same. What is the ratio of the distance traveled in this time, T, by Object 2 to that traveled by Object 1?
 
39. An increase in the average speed of the molecules of a gas confined in a rigid cylinder will correspond to an…




 
40. A metal spherical shell with a charge +Q surrounds a point charge with a charge –Q.
Β 
Β 
Which of the following correctly ranks the electric potentials at the lettered points (W, X, Y and Z). Assume 𝑉 β†’ 0 as π‘Ÿ β†’ ∞




 
41. A rope is used to connect two boxes, one with a mass of m and the other with a mass of 2m as shown in the diagram below. The boxes are resting on a smooth surface. A force F is then applied to the larger box. What is the tension in the connecting rope?
Β 
 
42. In the circuit shown, the voltage source, switch, capacitor and connecting wires have no resistance. The switch is closed until the circuit achieves steady state, at which point the switch is opened. Which of the following statements about the potential differences after the switch is opened is true.
Β 




 
43. The temperature of a black body is increased. The wavelength of electromagnetic radiation that is emitted with the greatest intensity will…




 
44. When NASA began conducting test flights for the space shuttle, they used a β€œglider” that had a mass of 980 kg (including pilot). This glider was launched horizontally at 500 π‘˜π‘š/β„Žπ‘Ÿ from a height of 3500 m. The glider eventually landed at a speed of 200 π‘˜π‘š/β„Žπ‘Ÿ . What was the average force of air resistance exerted on the glider if it came in at a constant angle of 10ΒΊ to the Earth?
 
45. The Moon orbits the Earth on a nearly circular orbit with a period, T, of 27.3 days. The radius of orbit is 3.84 x 105 km. What is the acceleration of the Moon toward the Earth?
 
46. A small object is placed in front of a concave mirror and to the left of the center of curvature at point P in the picture.
Β 
As the object is moved from point P to point Q, the size of the image produced will …




 
47. Each of the two blades in the rotor of a helicopter is 6.4 m long, has a mass of 230 kg, and is attached at one end to the rotor hub at the center. The blades are rotating with a frequency of 401 π‘Ÿπ‘’π‘£/π‘šπ‘–π‘› . What is the total rotational kinetic energy of the spinning blades?
 
48. A drop of liquid is spherical and has a diameter of 2.0 mm. It is given a charge of 2.0 x 10-15 C. This charged drop then combines with an identical uncharged drop and the two form one single drop. What is the electric potential at the surface of newly formed drop?
 
49. Wire A has a length of 2.0 m, a mass of 4.0 g, and it carries 10 A of current. The wire, which is parallel to the floor and can only move vertically, is placed above wire B that is carrying 15 A of current in the opposite direction. What separation distance between the two wires will allow the weight of wire A to be supported by magnetic force?
 
50. A gas undergoes radioactive decay with time constant Ο„. A sample of 10000 particles is put into a container. After one time constant has passed, the experimenter adds another 10000 particles into the container. How much time passes from the addition of the particles until the container of gas reaches 10000 total particles again?
 



 
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