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Author Question: How much thermal energy must be removed from 456 g of water at 25.0C to change it into ice at ... (Read 123 times)

evelyn o bentley

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on: Jul 29, 2018
How much thermal energy must be removed from 456 g of water at 25.0C to change it into ice at -10.0C?
 
  The specific heat of ice is 2090 J/kg  K, the latent heat of fusion of water is 33.5  104 J/kg, and the specific heat of water is 4186 J/kg  K.
  A) 105 kJ
  B) 153 kJ
  C) 57.3 kJ
  D) 47.7 kJ
  E) 210 kJ

Question 2

A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5 with the normal in the plastic. In the water, this beam makes an angle of 21.8 with the normal.
 
  What is the speed of light in the plastic cube? (c = 3.0  108 m/s)
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kristenb95

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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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evelyn o bentley

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Reply 2 on: Jul 29, 2018
Excellent

kalskdjl1212

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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