A charged ball is fired straight up, starting from a point at which the electric potential is +200 V. The equipotentials are equally spaced, as shown in the picture below, with successive lines in the picture being exactly 1.00 meter apart. This is done at the surface of the Earth, where the gravitational field has a value of g = 10.0 m/s2, directed straight down. The ball has a mass of 200 grams, and the magnitude of the charge on the ball is 10 millicoulombs. 1.00 m Vi +800 V +700 V +600 V +500 V +400 V +300 V +200 V
A charged ball is fired straight up, starting from a point at which the electric potential is +200 V. The equipotentials are equally spaced, as shown in the picture below, with successive lines in the picture being exactly 1.00 meter apart. This is done at the surface of the Earth, where the gravitational field has a value of g = 10.0 m/s2, directed straight down. The ball has a mass of 200 grams, and the magnitude of the charge on the ball is 10 millicoulombs. 1.00 m Vi +800 V +700 V +600 V +500 V +400 V +300 V +200 V
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Transcribed Image Text:(b) If the ball has a positive charge, what initial velocity must it have at the +200-V level for it to reach its maximum height at the +500-V level?
9.165
X m/s
(c) If the ball has a negative charge instead, what initial velocity must it have at the +200-V level for it to reach its maximum height at the +500-V level?
X m/s
6
Transcribed Image Text:A charged ball is fired straight up, starting from a point at which the electric potential is +200 V. The equipotentials are equally spaced, as shown in the picture below, with successive lines in the
10.0 m/s², directed straight down. The ball has a mass of 200 grams,
=
picture being exactly 1.00 meter apart. This is done at the surface of the Earth, where the gravitational field has a value of g
and the magnitude of the charge on the ball is 10 millicoulombs.
1.00 m
Vi
+800 V
+700 V
+600 V
+500 V
+400 V
+300 V
+200 V
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