When one travels west while passing over the International Date Line,
a. the date is decreased one day.
b. the time is decreased one hour.
c. the time is advanced one hour.
d. the date is advanced one day.
e. none of these occurs.
d
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What are the 2 types of reflection discussed in chapter 18?
A. Diffuse and specular B. Point and specular C. Diffuse and scattered D. Scattered and specular
A neutron makes a better "nuclear bullet", for fissioning a nucleus, than does a proton. This is because
A) it is easy to accelerate neutrons to high speeds in nuclear accelerators. B) the negative charge on the neutron attracts it to the nucleus. C) protons do not feel the strong nuclear force and thus do not interact appreciably with the nucleus. D) neutrons are so much more massive than protons. E) unlike the proton, the neutron is not repelled by the charge on the nucleus.
The current through two identical light bulbs connected in series is 0.25 A. The voltage across both bulbs is 110 V. The resistance of a single light bulb is
A) 22 ohms. B) 44 ohms. C) 220 ohms. D) 440 ohms. E) none of the above
A Venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (? = 1.2 kg/m3.)
a. 70 Pa b. 85 Pa c. 100 Pa d. 120 Pa e. 81 Pa