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2- The electric potential at y =5 m is 100 V, and the electric potential at y=10 m is 170 V,assuming the field is uniform. The y component of the electric field in this region is:
a) -14 N/C
b) 14 N/C
c) -28 N/C
d) 28 N/C


3- An electron in the beam of a typical dental x-ray machine has a kinetic energy 1.07* 10-14 J,this energy is equivalent to: (e = 1.6*10-19 C)
a) 1.07* 10-14 eV
b) 1.07* 1014 eV
c) 6.69*10-4 eV
d) 6.69*10eV

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Physics for Scientists and Engineers, Technology Update (No access codes included)
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Publisher: Cengage Learning
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