Example 3.1
The mass of the earth is
the earth is approximately 80 times the mace
nes the mass of the moon
and the earth's radius is 3.7 times that of the
of free fall on the earth is 10m s-2. estimate
hes that of the moon. If the acceleration
ms-2. estimate its value on the moon.
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Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c