What is the ratio of the relativistic momentum to the classical momentum?
a. 
b. 
c. 
d. 
e. 
a.
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Compound Microscope: A compound microscope has a 18-cm-long barrel and an objective lens with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnification of 240? It is adjusted for minimum eyestrain for persons with a near point of 25 cm.
A. 1.3 m B. 1.5 cm C. 1.9 cm D. 2.1 cm E. 2.3 cm
Two parallel flat planes of positive charge are separated by a distance d. Plane #1 has charge density ?1 and plane #2 has a charge density ?2. ?1> ?2
(a) In the region between the planes, the magnitude of the electric field is (b) In the region outside the planes the magnitude of the electric field is
A major source of chlorine gas, ci2, is from the electrolysis of brine, which is concentrated salt water, NaCI(aq). What is the sign of the electrode where the chlorine gas is formed? Is it negative or positive?
A) Positive, since the chloride ions lose electrons to form chlorine molecules. B) Negative, since the chlorine gas needs to deposit electrons to form chloride ions. C) Neither, since chlorine gas is a neutral molecule, there is not electrode attraction. D) Both, since the chloride ions from NaCl (aq) are attracted to the positive electrode to form chlorine molecules while the produced chlorine gas molecules move to deposit electrons at the negative electrode.
Time Dilation: You are a passenger on a spaceship. As the speed of the spaceship increases, you will observe
A. your watch slowing down. B. your watch speeding up. C. your watch losing time. D. your watch gaining time. E. nothing unusual about the behavior of your watch.