41. A pipe open at both ends has a fundamental frequency of f..A second pipe closed at one end and o
42. A converging glass lens with a refractive index of 1.5 is placed in water with a refractive inde
43. An object is located at 40 cm from the first of two thin converging lenses of focal lengths 20 c
44. Two stars are separated by an angle of 3 × 10−5radians. What is the diameter of the smallest tel
45. Unpolarized light of intensity I0is incident on a series of three polarizing filters. The axis o
46. If a gas undergoes a series of pressure (P) and volume (V) changes, as shown below, how much wor
49. Water is flowing at 4.0 m/s in a circular pipe. If the diameter of the pipe decreases to 1/2 its
50. A 5.0 nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0 cm) whic
51. A 5.0 A current flows along a wire with m. The wire resides in a uniform magnetic fieldT. The ma
53. A stiff wire bent into a semicircle of radius a = 2.0 cm is rotated at constant angular speed 40
54. Three long wires parallel to the x axis carry currents as shown. If I = 20 A, what is the magnit
55. The coil shown below has 2 turns, a cross-sectional area of 0.20 m2, and a field (parallel to th
56. A series RLC circuit is connected to an ac source ( ). The resistance, capacitive reactance andi
58. In the hydrogen spectrum, the ratio of the wavelengths for Lyman-α radiation (n = 2 to n = 1) to