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Author Question: A person makes iced tea by adding ice to 1.8 kg of hot tea, initially at 80C. How many kilograms ... (Read 36 times)

clippers!

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on: Jul 29, 2018
A person makes iced tea by adding ice to 1.8 kg of hot tea, initially at 80C.
 
  How many kilograms of ice, initially at 0C, are required to bring the mixture to 10C? The specific heat of water (and tea) is 4186 J/kg  K, and the latent heat of fusion of ice is 3.34  105 J/kg. A) 1.0 kg
  B) 1.2 kg
  C) 1.4 kg
  D) 1.7 kg

Question 2

X-rays with a wavelength of 0.00100 nm are scattered by free electrons at 130 from their original direction.
 
  What is the kinetic energy (in keV) of each recoil electron? (melectron = 9.11  10-31 kg, c = 3.00  108 m/s, 1 eV = 1.60  10-19 J, h = 6.626  10-34 J  s)
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emily12345

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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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clippers!

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

raenoj

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Reply 3 on: Yesterday
Wow, this really help

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