A student wishes to build a telescope. She has available an eyepiece of focal length -5.0 cm. What focal length objective is needed to obtain a magnification of 10x?
What will be an ideal response?
50. cm
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Nuclear Binding Energy: The binding energy per nucleon of a nucleus
A. increases steadily as we go to heavier elements. B. decreases steadily as we go to heavier elements. C. is approximately constant throughout the periodic table, except for very light nuclei. D. has a maximum near iron in the periodic table and decreases after that for heavier elements. E. has a minimum near iron in the periodic table and increases after that for heavier elements.
As the radius of the orbit of an artificial satellite increases, its orbital period __________
Fill in the blank(s) with correct word
Resistance
a) is measured in amperes. b) is the opposition to the flow of electric current. c) is the driving force that moves electrons in conductors. d) is not affected by temperature changes.
When de Broglie's matter waves are applied to electrons in the Bohr atom, which of the following occurs?