Multiple Choice Questions
1) In a head-on collision, an alpha particle (Z = 2) of energy 8.20 MeV bounces straight back from a nucleus of charge 80.0 e. How close were the centers of the objects at closest approach?
A) 2.81 × 10-14 m
B) 3.39 × 10-12 m
C) 6.56 × 10-15 m
D).
Multiple Choice Questions
1) Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at a frequency of 3.6 MHz. All radio measurements are made far from the antennas. The smallest angle, reckoned east of north from the antennas, at which constructive interference of.
11) A certain electromagnetic field traveling in vacuum has a maximum electric field of 1200 V/m. What is the maximum magnetic field of this wave?
A) 3.4 × 10-4 T
B) 4.0 × 10-6 T
C) 2.2 × 10-5 T
D) 9.6 × 10-6 T
E) 8.7 × 10-6 T
12) What is the wavelength used.
41) A star is moving toward the Earth with a speed of 0.9 c (90% the speed of light). It emits light, which moves away from the star at the speed of light. Relative to us on Earth, the speed of the light moving towards us (emitted by the star).
Short Answer Questions
Figure 21.25
1) In Figure 21.25, a uniform magnetic field B is confined to a cylindrical volume of radius 0.05 m. B is directed into the plane of the paper and is increasing at a constant rate of ΔB/Δt = 0.900 T/s. Calculate the magnitude and direction of the.
Multiple Choice Questions
1) Two fixed navigation beacons mark the approach lane to a star. The beacons are in line with the star and are 40 Mm apart. A spaceship approaches the star with a relative velocity of 0.30 c and passes the beacons. The passage of the ship between the.
Situation 30.1
An excited nucleus undergoes fission into two fragments.
→ +
The following atomic masses are known:
91.926270 amu
143.922845 amu
236.045563 amu
41) In Situation 30.1, the reaction energy, in MeV, is closest to:
A) 150
B) 160
C) 170
D) 180
E) 190
42) In Situation 30.1, assume, at a given instant, that the two.
21) An 18 mm wide diffraction grating has rulings of 710 lines per mm. Light is incident normally on the grating. Monochromatic light of 506 nm wavelength is used. The largest angle from the normal at which an intensity maximum is formed is closest to:
A) 46°
B) 44°
C) 42°
D) 40°
E) 38°
22).
31) The half-life of cobalt-60 is 5.3 years, while that of strontium-90 is 28 years. Suppose you have a sample of each, such that they initially contain equal numbers of atoms of these nuclides. How will the activities (number of decays per unit time) of the samples compare?
A) The.
Multiple Choice Questions
1) As you walk away from a plane mirror on a wall, your image
A) gets smaller.
B) may or may not get smaller, depending on where the observer is positioned.
C) is always a real image, no matter how far you are from the mirror.
D) changes from being a virtual.
31) If you hold a sheet of copper in a strong permanent magnet, with the plane of the sheet perpendicular to the magnetic field, and quickly jerk it out,
A) you will experience a magnetic force opposing your action.
B) you will experience a magnetic force assisting your action.
C) you will feel.
11) If you were in a spaceship traveling at a speed close to the speed of light (with respect to earth) you would notice that
A) some of your physical dimensions were smaller than normal.
B) your mass is different than normal.
C) your pulse rate is different than normal.
D) None of these.
Multiple Choice Questions
1) A 7.55 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of
2.05 × 108 m/s. The wavelength of the wave in carbon tetrachloride is closest to:
A) 272 nm
B) 301 nm
C) 338 nm
D) 361 nm
E) 397 nm
2) A 1.90 × 1014 Hz electromagnetic wave.
Figure 21.24a
41) An R-L circuit is shown, with a 17 ohm resistor and an ideal 49 H inductor, that has zero resistance. At time t = 0 s, there is a 12A current in the circuit. In Figure 21.24a, at time t = 0 s, the rate of change of.
Multiple Choice Questions
Situation 29.1
An atom has completely filled inner shells and a single valence electron in an excited p state. The filled inner shells have an orbital momentum equal to zero.
1) In Situation 29.1, the magnitude of the orbital angular momentum of the atom is closest to:
A) 1.0
B) 1.2.
Figure 20.5b
11) A rigid rectangular loop, which measures 0.30 m by 0.40 m, carries a current of 5.5 A, as shown. A uniform external magnetic field of magnitude 2.9 T in the negative x-direction is present. Segment CD is in the x-z plane and forms a 35° angle with the.
31) Someone in Earth's rest frame says that a spaceship's trip between two planets took 10.0 y, while an astronaut on the space ship says that the trip took 5.78 y. Find the velocity of the spaceship in terms of the speed of light.
A) 0.816 c
B) 0.735 c
C) 0.975 c
D).
31) A diffraction grating has 450 lines per mm. What is the highest order that contains the entire visible spectrum from 400 nm to 700 nm?
A) m = 2
B) m = 3
C) m = 4
D) m = 5
E) m = 6
32) Which of the following changes would increase the separation.
11) A farsighted boy has a near point at 2.0 m and requires eyeglasses to correct his vision. Corrective lenses are available in increments in power of 0.25 diopters. The eyeglasses should have lenses of the lowest power for which the near point is no further than 25 cm. The.
Multiple Choice Questions
1) An alternating current is supplied to an electronic component with a rating that it be used only for voltages below 16 V. What is the highest Vrms that can be supplied to this component while staying below the voltage limit?
A) 8 V
B) 16 V
C) 256 V
D) 8.
Short Answer Questions
1)A photoelectric surface has a work function of 2.10 eV. Calculate the maximum kinetic energy, in eV, of electrons ejected from this surface by electromagnetic radiation of wavelength 356 nm.
2)(Note: h = 6.63 x 10-34 J ? s, e = 1.60 × 10-19 C, and c =.
11) A blue laser beam is incident on a metallic surface, causing electrons to be ejected from the metal. If the frequency of the laser beam is increased while the intensity of the beam is held fixed,
A) the rate of ejected electrons will decrease and the maximum kinetic energy will.
Figure 21.5
11) In Figure 21.5, a straight wire carries a steady current I. A bar is in contact with a pair of circular rails, and rotates about the straight wire. The induced current through the resistor R is:
A) zero
B) from a to b
C) from b to a
Figure 21.6
12) In Figure.
Short Answer Questions
1) If the radius of a nucleus is given by R = RoA1/3 where Ro = 1.20 × 10-15 m, calculate the density of a nucleus that has A = 139. The mass of a nucleon (proton or neutron) is 1.67 × 10-27 kg.
2) The unstable isotope 234Th.
31) A cylindrical tank is 50.0 ft deep, 31.0 ft in diameter, and filled to the top with water. A flashlight shines into the tank from above. What minimum angle φ can its beam make with the water surface if the beam is to illuminate part of the bottom? (nwater.
Multiple Choice Questions
1) Find the energy (in eV) of an optical photon of frequency 6.43 × 1014 Hz.
A) 2.66 eV
B) 1.62 eV
C) 1.94 eV
D) 3.27 eV
2) Find the wavelength (in nm) of a 6.32 eV photon.
A) 196 nm
B) 167 nm
C) 216 nm
D) 234 nm
3) The work function of a particular.
Multiple Choice Questions
1) A 35 mm camera equipped with a 45 mm focal length lens is used to photograph a tree 15 m tall. The aperture of the lens is set at f/2. The aperture diameter at f/2, in mm, is closest to:
A) 23
B) 14
C) 18
D) 27
E) 31
2) A 35.
41) A 29.0 pm wavelength photon is scattered by a stationary electron. The maximum energy loss of the photon is closest to:
A) 4 KeV
B) 6 KeV
C) 10 KeV
D) 12 KeV
E) 15 KeV
42) An 18.0 pm wavelength photon is scattered by a stationary electron through an angle of 120°. The.
Short Answer Questions
1) A sinusoidal electromagnetic wave is propagating in vacuum.
(a)At a given point and at a particular time the electric field is in the +x direction and the magnetic field is in the -y direction. What is the direction of propagation of the wave?
(b) At the above point the.
Situation 27.3
A relativistic proton has a momentum of 1.0 × 10-18 kg ? m/s. The rest energy of a proton is 0.150 nJ.
21) In Situation 27.3, the kinetic energy of the proton, in nJ, is closest to:
A) 0.13
B) 0.16
C) 0.19
D) 0.22
E) 0.25
22) In Situation 27.3, the speed of the.
21) A very long wire generates a magnetic field of 0.0020 × 10-4 T at a distance of 1.0 mm. What is the magnitude of the current?
A) 1.0 mA
B) 2.0 mA
C) 4000 mA
D) 3100 mA
22) Two parallel, straight wires are 7.0 cm apart and each carries a 18.0 A current.
21) Why do heavy nuclei contain more neutrons than protons?
A) Neutrons dilute the electric repulsion of the protons.
B) Neutrons are lighter than protons.
C) Neutrons are heavier than protons.
D) Neutrons are radioactive, and so are heavy nuclei.
22) Modern nuclear bomb tests have created an extra high level of 14C in our.
11) How many electrons can be found with principal quantum number n = 3 in a suitably heavy atom?
A) 18
B) 6
C) 20
D) 9
12) Estimate the most energetic X-ray you can get from a heavy atom with Z = 93.
A) 118 keV
B) 0.865 eV
C) 164 MeV
D) 5.19 × 107 eV
13) Radioastronomers.
Figure 21.15
21) In Figure 21.15, a straight wire carries a current I. The wire passes through the center of a toroidal coil. The current is quickly reduced to zero. The induced current through the resistor R is:
A) zero
B) from a to b
C) from b to a
Figure 21.16
22) In Figure 21.16,.
Figure 22.2c
21) A series ac circuit is shown. The inductor has a reactance of 60 ohms and an inductance of 210 mH. A 30 ohm resistor and a capacitor whose reactance is 80 ohms are also in the circuit. The rms current in the circuit is 2.2 A. In Figure.
21) Find the energy of the photon emitted when an electron drops from the n = 20 state to the n = 7 state in a hydrogen atom.
A) 0.244 eV
B) 0.263 eV
C) 0.283 eV
D) 0.302 eV
22) Calculate the radius of the n = 4 Bohr orbit in O7+ (oxygen with.
Figure 20.8
31) A circular loop of radius 10 cm and three long straight wires carry currents of I1 = 20 A, I2 = 50 A, I3 = 20 A, and I4 = 40 A, respectively, as shown. Each straight wire is 20 cm from the center of the loop. In.
11) Scandium 44Sc decays by emitting a positron. The nuclide which is the product of the decay is:
A)
B)
C)
D)
E)
12) A radioactive source of a single nuclide emits 2.4 MeV neutrons at the rate of 7100 neutrons per second. The number of atoms in the source is.
21) Which statement about thin lenses is correct? In each case, we are considering only a single lens.
A) A converging lens always produces a real inverted image.
B) A diverging lens always produces a virtual inverted image.
C) A converging lens sometimes produces a real erect image.
D) A diverging lens always produces.
Situation 23.2
A bichromatic source produces light having wavelengths in vacuum of 450 nm and 650 nm. The indices of refraction are 1.440 and 1.420, respectively.
41) In Situation 23.2, a ray of the bichromatic light, in air, is incident upon the oil at an angle of incidence of 50.0°. The angle.
Situation 25.3
The angular magnification of a refracting telescope is 40. When the object and final image are both at infinity, the distance between the eyepiece and the objective is 143.5 cm. The telescope is used to view a distant radio tower. The real image of the tower, formed by the.
Multiple Choice Questions
1) A 2.0 m conductor is formed into a square and placed in the horizontal xy-plane. A magnetic field is oriented 30.0° above the horizontal with a strength of 1.0 T. What is the magnetic flux through the conductor?
A) 0.12 T ? m2
B) 0.22 T ? m2
C) 0.25.
11) A series RLC circuit has a peak voltage of 116 V and a peak current of 2.00 A. If the current lags the voltage by 52.0°, what is the average power of the circuit?
A) 71 W
B) 142 W
C) 148 W
D) 296 W
12) An RLC circuit has a reactance, due.
31) The longest wavelength of a photon that can be emitted by a hydrogen atom, for which the initial state is n = 3, is closest to:
A) 550 nm
B) 575 nm
C) 600 nm
D) 625 nm
E) 650 nm
32) The shortest wavelength of a photon that can be emitted by a hydrogen.
11) An oil film (n = 1.48) of thickness 290 nm floating on water is illuminated with white light at normal incidence. What is the wavelength of the dominant color in the reflected light?
A) Green (541 nm)
B) Blue-green (493 nm)
C) Violet (404 nm)
D) Yellow (572 nm)
E) Blue (470 nm)
12) A.
Short Answer Questions
1) Light of wavelength 519 nm passes through two slits. In the interference pattern on a screen 4.6 m away, adjacent bright fringes are separated by 4.0 mm. What is the separation of the two slits?
2) Light is incident perpendicularly from air onto a liquid film that is.
Short Answer Questions
1) A wire along the z-axis carries a current of 4.9 A in the positive z direction. Find the force (magnitude and direction) exerted on a 3.3 cm long length of the wire by a uniform magnetic field with magnitude 0.43 T in the -x direction.
2) A proton,.
21) Light having a frequency in vacuum of 6.0 × 1014 Hz enters a liquid of refractive index 2.0. In this liquid, its frequency will be
A) 12 × 1014 Hz
B) 6.0 × 1014 Hz
C) 3.0 × 1014 Hz
D) 1.5 × 1014 Hz
E) None of the above choices are correct.
22).
Multiple Choice Questions
1) Alpha particles (charge = +2e, mass = 6.68 × 10-27 kg) are accelerated in a cyclotron to a final orbit radius of 0.30 m. The magnetic field in the cyclotron is 0.80 T. The period of circular motion of the alpha particles is closest to:
A) 0.16 μs
B).
11) A double convex thin glass lens has equal radii of curvature. The focal length of the lens is +37.3 cm and the index of refraction of the glass is 1.52. The radius of curvature of each convex surface, in cm, is closest to:
A) 39
B) 35
C) 31
D) 43
E) 46
12) A.
