A charged particle (m = 2.0 g, q = ?50 ?C) moves in a region of uniform field along a helical path (radius = 4.0 cm, pitch = 8.0 cm) as shown. What is the angle between the velocity of the particle and the magnetic field?
A. 27°
B. 72°
C. 63°
D. 18°
E. 58°
Answer: B
Physics & Space Science
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A. 41 N/m B. 22 N/m C. 34 N/m D. 46 N/m
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A. 240 nm B. 328 nm C. 365 nm D. 656 nm E. 820 nm
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A surface explosion on a white dwarf, caused by falling matter from the atmosphere of its binary companion, creates what kind of object?
A) hypernova B) nova C) gamma ray burstar D) type I supernova E) type II supernova
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Exactly 500 grams of ice are melted at a temperature of 32°F. (LF,ice = 333 J/g.) The change in entropy (in J/K) is
A. 321. B. 146. C. 512. D. 610. E. 5230.
Physics & Space Science