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Author Question: A polar bear of mass 200 kg stands on an ice floe that is a uniform 1.0 m thick. What is the minimum ... (Read 91 times)

armygirl

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on: Jul 29, 2018
A polar bear of mass 200 kg stands on an ice floe that is a uniform 1.0 m thick. What is the minimum area of the floe that will just support the bear in saltwater of density 1030 kg/m3? The density of ice is 980 kg/m3.
 
  A) 1.0 m2
  B) 2.0 m2
  C) 3.0 m2
  D) 4.0 m2

Question 2

A magnifying glass of focal length 150 mm is used to examine an old manuscript very closely by a person with a near point at 25 cm.
 
  (a) What is the maximum angular magnification given by the lens?
  (b) What is the angular magnification for relaxed eye-viewing, with the image at infinity?
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flexer1n1

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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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armygirl

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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