Chromium-55 (54.9408 u) emits an electron leaving a daughter nucleus of manganese-55 (54.9380 u). How much energy is released in this reaction? (1 u = 931.5 MeV/c2)
a. 2.61 MeV
c. 5.59 MeV
b. 0.70 MeV
d. 1.40 MeV
A
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Suppose the planet Uranus were much brighter in the sky, so that it was as easily visible to the naked eye as Jupiter or Saturn. Which one of the following statements would most likely be true in that case?
A) Its brightness would make it possible to read by starlight at night. B) Its gravity would cause the tides to be much higher than they actually are. C) Its slow motion through the sky would have led it to be named after the Goddess of Procrastination. D) The discovery that Earth is a planet going around the Sun would have come hundreds of years earlier. E) A week would have eight days instead of seven, despite the year length being unchanged.
One of the problems with adopting a one-dimensional biological causal model of abnormality is...
a). it ignores that contributions of psychological & sociocultural factors to the disorder b). it ignores any interactions with other contributing factors c). it ignores any environmental influences on the disorder d). all of these e). none of these
Satellite A has twice the mass of satellite B, and moves at the same orbital distance from Earth as satellite B. Compare the speeds of the two satellites
A) The speed of B is twice the speed of A. B) The speed of B is one-half the speed of A. C) The speed of B is one-fourth the speed of A. D) The speed of B is equal to the speed of A. E) The speed of B is four times the speed of A.
Of the two main types of waves, light is a(n) ______________ wave
Fill in the blank(s) with correct word