If the Sun rises precisely due east,
A. you must be located at Earth's equator.
B. it must be the day of either the March or the September equinox.
C. it must be the day of the June solstice.
Answer: B. it must be the day of either the March or the September equinox.
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You are designing a generator to have a maximum emf of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of 0.030 m2, what should be the frequency of the generator in a uniform magnetic field of 0.030 T?
A) 7.1 Hz B) 7.5 Hz C) 8.0 Hz D) 22 Hz E) 44 Hz
A proposed explanation for gamma-ray bursters is:
A) hypernova-making black holes and bi-polar jets. B) coalescence of a neutron star binary. C) collisions between two white dwarfs. D) Both A and B are possible. E) All three are possible.
Laser light sent through a double slit produces an interference pattern on a screen 3.00 m from the slits. If the eighth-order maximum occurs at an angle of 63.4°, at what angle does the third-order maximum occur?
a. No third-order maximum occurs. b. 0.34° c. 19.6° d. 23.8° e. Not enough information is given.
If the Q-value is greater than zero for a nuclear reaction, the reaction is
A) exoergic B) endoergic C) endothermic D) exdoergic E) not possible