{[['
']]}
']]}
161: What name is given to those elementary particles for which there is symmetry under intrapair production? Included are photons, pi mesons, and nuclei with an even number of particles.
ANSWER: BOSONS
162: When a fast charged particle traverses a dielectric medium at a velocity exceeding the velocity of light in that medium, radiation is emitted. This radiation is known as:
w) Point radiation
x) Cerenkov radiation
y) Synchrotron radiation
z) Bremsstrahlung
ANSWER: X -- CERENKOV
163: Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE?
w) The acceleration is largest when the oscillating mass is instantaneously at rest.
x) The larger the spring force constant the larger the period.
y) The period of the motion depends linearly on the amplitude of the motion.
z) The acceleration is larger when the oscillating mass has its greatest velocity.
ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST
164: An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE?
w) Her moment of inertia is increased.
x) Kinetic energy is conserved.
y) The skater does work when pulling in her arms.
z) Angular momentum is increased.
ANSWER: Y -- THE SKATER DOES WORK WHEN PULLING IN HER ARMS
165: If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's:
w) Frequency
x) Wavelength
y) Velocity
z) Amplitude
ANSWER: Z -- AMPLITUDE
166: If a sled has a constant acceleration of 2 meters per second squared and starts from rest, the distance in meters that it will have covered after 5 seconds is:
w) 10 meters
x) 20 meters
y) 25 meters
z) 50 meters
ANSWER: Y -- 25 METERS
167: The neutrons in an atom:
w) Are part of the nuclear charge
x) Rotate about the nucleus in elliptical orbits
y) Vary in number with different isotopes
z) Are always equal in number to the total number of protons
ANSWER: Y -- VARY IN NUMBER WITH DIFFERENT ISOTOPES
168: Which of the following phenomena suggest that light may be a transverse wave?
w) Reflection
x) Polarization
y) Photoelectric effect
z) Diffraction
ANSWER: X -- POLARIZATION
169: In simple harmonic motion, the acceleration is:
w) constant
x) Proportional to the distance from the central position
y) Greatest when the velocity is greatest
z) None of the above
ANSWER: X -- PROPORTIONAL TO THE DISTANCE FROM THE CENTRAL POSITION
170: When a liquid moves through a pipe having a varying diameter, the pressure against the inside walls of the pipe will be:
w) The same throughout
x) Lowest where the diameter is smallest
y) Lowest where the diameter is largest
z) Lowest where the velocity of flow is lowest
ANSWER: X -- LOWEST WHERE THE DIAMETER IS SMALLEST
Post a Comment