The applied magnetic field that it is necessary to reduce the intensity of magnetization of a ferromagnetic material to zero after saturation in the forward direction is the _________field.
Fill in the blank(s) with the appropriate word(s).
coercive
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The density of a column of air decreases as altitude increases because
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A microscope has a tube length of 15.0 cm, an objective focal length of 0.95 cm, and an eyepiece focal length of 2.50 cm. What is the magnification of the microscope? Assume it is adjusted so that the eye is relaxed
a. 122 b. 132 c. 148 d. 12