A particular nucleus of the element erbium contains 68 protons and 90 neutrons. What is the total charge of the erbium nucleus?
A) zero
B) 1.4 × 10-17 C
C) 2.5 × 10-17 C
D) 1.1 × 10-17 C
E) 3.5 × 10-18 C
Correct Answer:
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Q1: Q2: A positively charged rod is brought near Q4: How many electrons must be transferred to Q4: Electrons Q5: Silicon can behave as a conductor or Q6: Two small spheres repel one another electrostatically. Q8: An initially neutral glass rod is rubbed Q9: Two small spheres attract one another electrostatically.
A)are about 2000 times more massive than
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