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Author Question: A concave spherical mirror with a radius of 20 cm creates a real image 30 cm from the mirror. How ... (Read 58 times)

rachel9

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on: Jul 29, 2018
A concave spherical mirror with a radius of 20 cm creates a real image 30 cm from the mirror. How far is the object from the mirror?
 
  A) 50 cm B) 5.0 cm C) 20 cm D) 15 cm E) 7.5 cm

Question 2

When a current flows through a metal wire, the moving charges are
 
  A) only electrons.
  B) negative metal ions.
  C) only protons.
  D) positive metal ions.
  E) both protons and electrons.
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shaquita

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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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rachel9

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Reply #2 on: Jul 29, 2018
Thanks


shaquita

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Reply #3 on: Jul 29, 2018
Welcome :)


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