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Author Question: Two objects are thrown from the top of a tall building. One is thrown up, and the other is thrown ... (Read 79 times)

bobbie

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on: Jul 29, 2018
Two objects are thrown from the top of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street? Neglect air resistance.
 
  A) They are traveling at the same speed.
  B) The one thrown down is traveling faster.
  C) The one thrown up is traveling faster.
  D) It is impossible to tell because the height of the building is not given.

Question 2

A convex-concave thin lens is made with the radius of curvature of the convex surface being 25.0 cm and the concave surface 45.0 cm. If the glass used has index of refraction 1.500, what is the focal length of this lens?
 
  A) -32.0 cm
  B) 32.0 cm
  C) 113 cm
  D) 67.5 cm
  E) -113 cm
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krakiolit

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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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bobbie

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Reply #2 on: Jul 29, 2018
TY


krakiolit

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Reply #3 on: Jul 29, 2018
You're welcome


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