An object placed 12 cm from a concave mirror produces a real image 8.0 cm from the mirror. If the object is now moved to a new position 15.0 cm from the mirror, where is the new image located as measured from the mirror?
a. 6.5 cm
c. 7.1 cm
b. 14.6 cm
d. 3.0 cm
C
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Exclusion Principle: A hydrogen atom is in the 6h state. Which one of the following numbers could be an orbital angular momentum quantum number ? for that state?
A. 5 B. 6 C. 7 D. 8 E. 9
A weightless astronaut in an orbiting satellite is
A) shielded from Earth's gravitational field. B) beyond the pull of gravity. C) like the satellite, pulled by Earth's gravitation. D) none of the above
An electron (m = 9.1 × 10?31 kg, q = ?1.6 × 10?19 C) starts from rest at point A and has a speed of 5.0 × 106 m/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VA?VB.
A. ?71 V B. +71 V C. ?26 V D. +26 V E. ?140 V
Using the relativistic velocity-addition formula for adding everyday velocities produces
A) nonsense. B) a significantly better result than adding them classically. C) a classical result.