Fundamental Forces: How does the range of an exchange force depend on the mass of the exchange particle?
A. The range is longer for a massive exchange particle than for a light exchange particle.
B. The range is shorter for a massive exchange particle than for a light exchange particle.
C. The range does not depend on the mass of the exchange particle.
Answer: B
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Interference: Two beams of coherent light start out at the same point in phase and travel different paths to arrive at point P. If the maximum constructive interference is to occur at point P, the two beams must travel paths that differ by
A. a whole number of wavelengths. B. an odd number of half-wavelengths. C. a whole number of half-wavelengths.
The cosmic background radiation comes from a time after the origin of the universe
a. when protons and neutrons were first formed. b. when the big bang first began to expand. c. the inflationary period. d. when gamma rays had enough energy to destroy nuclei. e. when electrons began to recombine with nuclei to form atoms.
An ac generator consists of a coil with 40 turns of wire, each with an area of 0.06 m2. The coil rotates in a uniform magnetic field B = 0.4 T at a constant frequency of 55Hz. What is the maximum induced emf?
A) 110 V B) 625 V C) 200 V D) 421 V E) 332 V
A proton strikes an Oxygen-18 nucleus producing Fluorine-18 and another particle. What other particle is produced by this nuclear reaction?
A) a neutron B) an alpha particle C) a gamma particle D) a ?- particle E) a ?+ particle