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Author Question: A small 1.4-N stone slides down a frictionless bowl, starting from rest at the rim. The bowl itself ... (Read 196 times)

strangeaffliction

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on: Jul 29, 2018
A small 1.4-N stone slides down a frictionless bowl, starting from rest at the rim. The bowl itself is a hemisphere of radius 75 cm. Just as the stone reaches the bottom of the bowl, how hard is the bowl pushing on it?
 
  A) 0.70 N
  B) 1.4 N
  C) 2.8 N
  D) 4.2 N
  E) 5.6 N

Question 2

Two spaceships are traveling through space at speeds of 0.600c and 0.900c, respectively, with respect to Earth.
 
  If they are headed directly toward each other, what is their approach speed (in terms of the speed of light) as measured by the captain of either ship?
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Expo

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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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strangeaffliction

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Reply 2 on: Jul 29, 2018
:D TYSM

xthemafja

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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