A particle (q = ?4.0 ?C, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a magnitude of 2.0 km/s and a direction that is 50° away from that of the magnetic field. The particle is observed to have an acceleration with a magnitude of 5.8 m/s2 . What is the magnitude of the magnetic field?
a. 5.3 mT
b. 4.9 mT
c. 5.1 mT
d. 4.7 mT
e. 3.6 mT
d
Physics & Space Science
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At approximately what time would a first quarter moon rise?
A) 6 P.M. B) noon C) 9 A.M. D) midnight E) 6 A.M.
Physics & Space Science
A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so that its pendulum motion takes 3.00 s. How far from the center of the rod should the pivot be located?
A) 7.98 cm B) 7.52 cm C) 8.73 cm D) 8.40 cm E) 23.4 cm
Physics & Space Science
At 9 a.m. on Monday a radioactive sample contained four million nuclei. At 9 a.m. on Friday three million of these nuclei had decayed. The half-life of this sample is:
a. 5 days b. 4 days c. 3 days d. 2 days e. 1 day
Physics & Space Science
Contrast a hypernova and a type II supernova
What will be an ideal response?
Physics & Space Science