PHYSICS I PHYS 1100
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This 2 page Class Notes was uploaded by Justine Nitzsche on Monday October 19, 2015. The Class Notes belongs to PHYS 1100 at Rensselaer Polytechnic Institute taught by Christian Wetzel in Fall. Since its upload, it has received 8 views. For similar materials see /class/224879/phys-1100-rensselaer-polytechnic-institute in Physics 2 at Rensselaer Polytechnic Institute.
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Date Created: 10/19/15
Part A Part B Part C Act 25 Practice Exam Solns 1B 2C 3A 43 5b 1b 2a 3c 4a 5d 6b Fy FX Gy FyGy26N FXGX 26Na2 Fxa0 L GX eql eq2 torque about lower bearing FX13N 2 Forces add vectorially to zero and it must be closer to the small charge so electron at X must be greater than 10cm 8 eXA22 eXlOcmA2 4X l 0cmA2 XAZ 2X10cmx X20cm keep only positive soln 3 Long way The man absorbs detects a doppler shi ed wave with lower frequency ffvuv where u is the man s speed The re ected wave corresponds to a wave emitted from the moving man with frequency fquotf39vvufvuvu28kHz 343 7 085343 095 28kHz0994 beats f7 fquot 28kHzl994155 Hz In the short version each factor above is approximately the same number In this case the intruder is moving away from the source with a speed u satisfying uv ltlt 1 The Doppler shi with u 70950 ms leads to z 2 u l f 2 2095ms280 kHz f m v 343 ms fr fs 155Hz 4 GMmr2 mvzr v 2139CrT r GMT241t213 667 x 103911 N mzkg225 x 1030 kg300 d86400 sd241t213 r 142 X1011m 5 For nodes at both ends 7 2Dn or equivalently D nkZ Figure shows that within the distance D there are 32 Therefore n 3 Part D 1 Fx 9 x 109 N mzC210399 C203 m2 9 x 109 N mzC210399 C2 cos30 03 m2 9 x 109 N mzC210399 C2 cos30 03 m2 Fx 10397 N Fy 9 x 109 N mzCZ10399 C2sin30 03 m2 9 x 109 N mzC210399 C2sin30 03 m2 Fy 10397 N
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