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The scale of a spring balance that reads from 0 to 15.0 kg is 12.0 cm long. A package suspended from the balance is found to oscillate vertically with a frequency of 2.00 Hz.
(a) What is the spring constant?
(b) How much does the package weigh?
A spherical cavity of radius 4.31 cm is at the center of a metal sphere of radius 15.0 cm, Determine the electric field at a point 3.06 cm from the center of the cavity
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When driving west toward the Rocky Mountains, you see a peak 2.8 above the horizon. Your GPS gives your current elevation as 1500, Find the peak's elevation
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