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Author Question: A object is 20 cm in front of a concave mirror, and the image is 5.0 cm in front of the mirror. What ... (Read 134 times)

Chelseaamend

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on: Jul 27, 2018
A object is 20 cm in front of a concave mirror, and the image is 5.0 cm in front of the mirror. What is the focal length of the mirror?
 
  A) 0.25 cm
  B) 25 cm
  C) 6.7 cm
  D) 4.0 cm
  E) 2.1 cm

Question 2

Over geological time periods, the Earth's climate has been
 
  A) relatively stable
  B) continuously unstable
  C) constant and unchanging
  D) gradually becoming more unstable
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BUTTHOL369

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Reply #1 on: Jul 27, 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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Chelseaamend

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

yeungji

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Reply 3 on: Yesterday
:D TYSM

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