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During a lunar eclipse, the moon, earth, and sun all lie on the same line, with the Earth between the Moon and the sun. The moon has a mass of 7.36x10^22 kg the earth has a mass of 5.98 x 10^24 kg and the sun has a mass of 1.99 x 10^30 kg. The separation between the Moon and the Earth is given by 3.84 x 108 m; the separation between the Earth and the sun is given by 1.496x10^11 m
a) Calculate the force exerted on the Earth by the moon.
b) Calculate the force exerted on the Earth by the Sun.
c) Calculate the net force exerted on the Earth by the moon and the sun.
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The resonant frequency of a series RCL circuit is 10.2 kHz. The inductance and capacitance of the circuit are each doubled. What is the new resonant frequency
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There is a uniform charge distribution of ?= 7.90 * 10^-8 C/m along a thin wire of length l=5.58 cm. Find the magnitude of the electric field at the center of the semicircle
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