What is the density of the nucleus of 90Sr?
A) greater than 3 × 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
E
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A salesman attempts to convince you to purchase a "solar neutrino shield" to protect you and your family. (It's even "on sale!") Why do you turn down this excellent offer?
A) Neutrinos rarely, if ever, interact with other matter. B) There's no such thing as a solar neutrino. C) Solar neutrinos are generated by solar winds, but we're in a solar minimum now, so the risk of damage is very low. D) The Earth's natural magnetic field already offers excellent protection against the onslaught of solar neutrinos.
The belts of Jupiter are best described as :
A) regions of downward moving material and low pressure. B) regions of upward moving material and low pressure. C) regions of upward moving material and high pressure. D) regions of downward moving material and high pressure. E) turbulent regions with no organized circulation pattern.
The potential difference between the plates of a parallel plate capacitor with the plate separation of 6 cm is 60 V. What is the electric field between the plates of this capacitor?
A) 60 V/m B) 500 V/m C) 1000 V/m D) 2000 V/m E) 3600 V/m
The general formula ROH is that of
a. an amine. b. an alkyl halide. c. an alcohol. d. none of these