GAP1_Exam1 - Name.k'=E-L'Y PhYsics Department Duquesne...

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Name , ------'.k-'-'=E'--L'Y __ PhYsics Department Duquesne University EXAM #1 PH2<1-01 GAP I September 30, 2008 Read everything carefully! This test covers Chapters 1 ~ 4. There are 5 multiple-choice questions worth 5 points each, and 5 long-answer questions worth 15 points eacIL There are 100 points possible. Partial credit will be given. but only if you show your work and your reasoning is clear!!!" Please also show yom work on the multiple-choice questions. 1. A sphere has a smf.ace area of24 cm 2 . This iseqwvalent to: (:2'1 r.w.~)( " ~O~/(l~~ · J , ~.:;;;;;, - ~ 4~ 00-:> A) 2.4 x 10-' m 2 B) 2.4 x 10-' m' ~4 x 10-5 0) 0.07-m 2 E) 24 m 2 A battleship fires two shells, each onc bitting a different target ship floating on the same -rt-... "" ~ -Itv>!2, surface of water (that is, the elevations of all three ships are the same). Shell #1 travels 3. ~ ki:ll...,y- - twice asf;iPto its taJ;get but goes half as high (comparing maximum heights) than Shell .Jo.,k.esl""7l-e.,. - #2. Which shell takesihe longest amount oftllne to reach ' (ts target? , ~" j-<.e. ~ .""",l;C"" ~.It A) Shell #1 B) Shell #2 ' C) The heights are the same.
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