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D. 5.76 W
144 W 11 Numerical Response
6. The magnitude of the force between two charged particles that are a fixed
distance apart is 3.80 × 10– 4 N. If the distance between their centres is
exactly doubled, then the magnitude of the force between the particles,
expressed in scientific notation, is a.bc × 10– d N. The values of a, b, c, and d
are _____ , _____ , _____ , and _____.
(Record all four digits of your answer in the numerical-response section on the answer sheet.) 18. The electric field strength 2.0 × 10–10 m from an alpha particle is
D. 7.2 N/C
3.4 × 1010 N/C
7.2 × 1010 N/C 12 19. If the source of Earth’s magnetic field were a bar magnet, then the best diagram to
show this field would be 13 Use the following information to answer the next two questions.
A Mass Spectrometer
A particular lithium sample contains two isotopes. These isotopes are singly
charged in an ion generation and acceleration chamber. Since individual
atoms are ionized at different points in the acceleration chamber, their speeds
vary when they enter the velocity selection chamber. In the velocity selection
chamber, the electric field strength is 5.95 × 102 N/C and the magnetic field
strength is 1.55 × 10–3 T. The velocity selection chamber allows ions of a
certain speed to pass through undeflected. The beam of undeflected ions then
enters the ion separation chamber where the magnetic field of 0.185 T splits
the beam into two beams. Beam 1 curves through a radius of 0.131 m.
E = 5.95 × 102 N/C
B2 = 0.185 T
Positive plate Beam 2 Electron
B1 = 1.55 × 10–3 T Beam 1 Negative plate Sample
chamber 20. Velocity selection
and The speed of the undeflected ionized lithium ions, Li+, as they leave the velocity
selection chamber is
D. 4.25 × 104 m/s
3.84 × 105 m/s
8.63 × 106 m/s
7.22 × 107 m/s 14 Use your recorded answer from Multiple Choice 20 to answer Numerical Response 7.*
7. The mass of a lithium ion in beam 1, expressed in scientific notation, is
b × 10–w kg. The value of b is __________.
(Record your three-digit answer in the numerical-response section on the answer sheet.) *You can receive marks for this question even if the previous question was answered incorrectly. Use the following information to answer the next question.
Bill notices that the picture on his television screen is distorted when a strong
magnet is placed near it. Magnet Note: This distortion can be permanent.
21. This distortion occurs because of the magnetic force acting on the
D. visible wavelengths of EMR
gamma radiation 15 Use the following information to answer the next two questions.
Radio telescopes detect radio waves emitted by objects throughout the
universe. They do not detect the visible light from stars and galaxies.
The Dominion Radio Astrophysical Observatory (DRAO), located in
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- Fall '09