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Chapter 16: Q3Q (page 443)
Explain why fog or rain droplets tend to form around ions or electrons in the air.
Due to the polarity of the water molecules, they are affected by ions or electrons in the air.
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Contrast the net charge on a conductor to the 鈥渇ree charges鈥� in the conductor.
The balloon in Fig. 16鈥�48 was rubbed on a student鈥檚 hair. Explain why the water drip curves instead of falling vertically.
(II) What is the electric field strength at a point in space where a proton experiences an acceleration of 2.4 million 鈥�g鈥檚鈥�?
(II) An electron is released from rest in a uniform electric field and accelerates to the north at a rate of\({\bf{105 m/}}{{\bf{s}}^{\bf{2}}}\).Find the magnitude and direction of the electric field.
Question: (II) In Fig. 16鈥�62, two objects, \({{\bf{O}}_{\bf{1}}}\) and \({{\bf{O}}_{\bf{2}}}\) have charges \({\bf{ + 1}}{\bf{.0}}\;{\bf{\mu C}}\) and \({\bf{ - 2}}{\bf{.0}}\;{\bf{\mu C}}\), respectively, and a third object, \({{\bf{O}}_{\bf{3}}}\), is electrically neutral. (a) What is the electric flux through the surface \({A_1}\) that encloses all three objects? (b) What is the electric flux through the surface \({A_2}\) that encloses the third object only?
FIGURE 16鈥�62 Problem 39.
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