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Author Question: Two large parallel plates are separated by 1.0 mm of air. If the potential difference between them ... (Read 63 times)

rmenurse

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on: Jul 29, 2018
Two large parallel plates are separated by 1.0 mm of air. If the potential difference between them is 3.0 V, what is the magnitude of their surface charge densities? (0 = 8.85  10-12 C2/N  m2)
 
  A) 2.7  10-8 C/m2
  B) 1.6  10-4 C/m2
  C) 5.3  10-8 C/m2
  D) 3.3  10-4 C/m2

Question 2

A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 by a crane, using a 20-m long steel cable that is 1.5 cm in diameter. Young's modulus for steel is 2.0  1011 N/m2.
 
  What is the change in length of the cable caused by lifting the car? A) 8.4 mm
  B) 8.4 cm
  C) 4.9 mm
  D) 4.9 cm
  E) 4.9 m
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daiying98

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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rmenurse

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

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Reply 3 on: Yesterday
Excellent

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