Size of the Nucleus: Calculate the estimated density of the nucleus of 
Sr? (mneutron ? mproton = 1.67 × 10-27 kg)
A. greater than 3.0 × 1020 kg/m3
B. 90 kg/m3
C. 2.1 × 1019 kg/m3
D. 2.0 × 1015 kg/m3
E. 2.3 × 1017 kg/m3
Answer: E
You might also like to view...
The resultant force R (in newtons) for the force system shown in the figure is:
(A) 29.5i 1 36.4j – 81.4k
(B) 229.5i – 36.4j 1 78.3k
(C) 236.4i 1 29.5j 1 81.4k
(D) 239.3i 1 36.4j 1 122.2k
Spectral lines for an element are often in the
A) infrared region. B) ultraviolet region. C) both of these D) neither of these
At the summer solstice in June, at what latitude is the sun directly overhead at solar noon?
A. 0.0
(the equator)
B. 23.5
N
C. 23.5 S
D. 66.5 N
E. 40.0N
Consider some material that has been cooled until it has become a superconductor. If it is cooled even further its resistance will:
a. increase. b. decrease. c. stay constant and non-zero. d. None of the above.