A vector of magnitude 3 CANNOT be added to a vector of magnitude 4 so that the magnitude of the resultant is:
a. 7
b. 3
c. 5
d. 1
e. Zero
Answer: e. Zero
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The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. D. B. E. C. F. D. G. E. H.
Newton discovered
A) gravity. B) that gravity is universal. C) neither of these
It is often possible to use atomic masses when calculating the binding energy of a nucleus. This is not true for calculating the Q value for the e+ decay process since
a. the electron masses do not cancel. b. a positron is an antiparticle. c. the electron masses cancel. d. the mass of a positron cannot be neglected when compared to the mass of a nucleus. e. none of the above.
The velocity of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s2)t - (6.2 m/s3)t2. What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?
A) -13 m/s2 B) -15 m/s2 C) 13 m/s2 D) 15 m/s2 E) 0 m/s2