quiz1_key_jjl052

quiz1_key_jjl052 - Name (Last, First): K Quiz 1 UCSD PID:...

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Unformatted text preview: Name (Last, First): K Quiz 1 UCSD PID: |A|_|_|_|_|_|_|_|_| Chemistry 6A Fa/i 2008 Signature: Form 506 Total Points: /20 You have 10 minutes to comp/ete this quiz. Please show all your work, but write the answers in the designated spaces. The points a/lotted for each question are indicated in parenthesis. I.“ Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.10938 x 10‘31 kg EK = J/Zmi/ Mass of proton, m, = 1.67262 X 10'27 kg gig. Mass of neutron, mn = 1.67493 x 10'27 kg Ep — 4/78} Fundamental charge, e = 1.60218 x 10‘19 C 0 g = 9.80665 m-s‘2 Ep 2 mgh c = 2.99792 x 108 mos‘1 c = v1 Potentially Helpful Conversion Factors: 1 J = 1 Nom 1 N = 1 kg m s2 1 L = 103 cm3 . What property of electrons was discovered from Robert Millikan‘s oil drop eypeiimei it? Keep it brief( < one sentence)! (“7 mil-its) [’Ul/‘iclimiirk’m‘ (“u-“r “Y2” In each pair, circle the type of radiation with the longest wavelength: (6 points) blue visible lights/yellow visible light) Qltraviolet light). x-ray radiation (adio waves . microwaves \mfl/ Jerry tells you that sodium and potassium are chemically very different. Do you think he's correct? Why or why not? (3 points) U C) v z; i . ee ‘I’W kill l [x’J‘ % { §¢Wie (Ox/l €21) Hf Fl QPV‘F l MVQ’f'ql 4) Name (Last, First): Quiz 1 UCSD PID: |A|_|_|_|_|_|_|_|_| Chem/Sty 6A Fa//2008 Signature: Form 506 4. Jerry's 1.00 x 103 kg car is in neutral at the bottom of two hills. His friends roll a 2.35 x 103 kg truck down the first hill from a height of 40.0 m, colliding with Jerry's car and dissipating 5. 3b " 10'; m heat and sound. Jerry's car is completely intact and rolls up the second hill. (a) Neglecting friction, how fast is Jerry's car moving immediately after the collision? VTFWVKf ‘1 12,39 “0.32% éotwgt) mom) : 42:55-25.» 3 as», kET (4 points) // WW4 W”. 3 KET ‘ Callblx‘. £131.77 iris"? ; 93535, l 3 V3”; ‘59 M779" ‘1}..‘2 m/s {5‘ i‘deqlecting friction, how far up the second hill docs Jerry's car roll? If you did not get a value. to: part (a), use 70.km/h. (4 points} Kai : PEJ - "$393254 3 ,- my. . M ' Kt : looogq. gong 5?.) (flag v41“) #0. Km/h “fid‘m groggy, iw— low“ L (“f—{’m/S v1! 73LGQ‘J “CM 1453 " “LT ’75)]. 2 Wt 0%. L] j m FE} 1 (were?) (‘1.ch¢.)%) X2 l 1 H, m; *1, K~______—\ Name (Last, First): [1' Quiz 1 ucso PID: |A|_|_|_|_|_|_|_|_| Chemistry 6A Fall2008 S/ynature: Form 507 Total Points: / 20 You have 10 minutes to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.10938 x 10'31 kg EK = J/vaz Mass of proton, mp = 1.67262 x 10‘27 kg E _ qqu Mass of neutron, mn = 1.67493 x 10'27 kg P _ 47,61, Fundamental charge, e = 1.60218 x 10‘19 C 9 = 9.80665 m-s‘2 _ C = 2.99792 X 108 mos'1 C - VK Epzmgh Potentially Helpful Conversion Factors: 1 J = 1 Norm 1N=il.l<gms'2 '1 L = 103 cm3 1. What property of electrons was discovered from J. J. Thompson's cathode ray experiment? Keep it briet( < one sentence)! 7? points) _ , fi'. , _ ‘i (L Electrode; out/(o drawiflmdl‘i. WV‘W/ 3(- 2. In each pair, circle the type of radiation with the highest frequency: (6 points) . yellow_visiple\|ight ultraviolet light LX/iayradiation) .:.._-... ..__‘ radio waves .(r'nicroanES\ »\_‘___/ 3. Jerry tells you that silicon is better conductor of electricity than copper. Do you think he's correct? Why or why not? (3 points) No ,. {L204 (5 'mQ‘f/(fxl 04L] killm , , C0?P&( \5 “r‘ 97”“; mad" Name (Last, First): bi Quiz 1 UCSD PID: |A|_|_|_|_|_|_|_|_| Chemist/y 6A Fall 2008 Signature: Form E07 4. Jerry's 1.00 x 103 kg car is in neutral at the bottom of two hills. His friends roll a 2.35 x 103 kg truck down the first hill from a height of 40.0 m, colliding with Jerry's car and dissipating heat and sound. Neglecting friction, Jerry's car rolls 39.3 m up the second hill undamaged. (a) How much energy was dissipated as sound and heat from the collision? (4 points) TM -’ 3 Mia)” : Zanic‘ :6 (44%«tttin/fllliosg 3 ‘lllgbg l inf .’ ; Md)“ : lwofiw‘gkj ("l-40%} '7?) (#130 ‘— 3rfi§tol ,3 COHISKQQ (184197 Sgt 7‘90 53 \ ( b) Considering the energy lost in part (a), at what speed was Jerry's car moving in‘media’ceiy after the collision? If you did not get a value for part (a), use 200 id. (4 points) Mgr/L3 Pmr‘l’ (a) FE) : ; ;, )1sz #411090 if) ) 'VY’ \fivfirié” \/ ‘.. , l. A "z - 1, r u fl. \ Uri; V } Name (Last, First): Quiz 1 UCSD PID: |A|_|__|_|_|_|_|_|_l Chemistry 6A Fol/2008 Signature: Form E08 Total Points: / 20 You have 10 minutes to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.10938 x 10'31 kg EK : I/2mv2 Mass of proton, mp = 1.67262 x 10'27 kg E = ‘1qu Mass of neutron, mn = 1.67493 x 10‘27 kg ’7 47reor Fundamental charge, e = 1.60218 x 10'19 C E], = mgh g = 9.80665 mos"2 C : vx c = 2.99792 x 108 mos"1 Potentially Helpful Conversion Factors: 1J=1N0m 1N=1kgms‘2 1L=103cm3 1. What property of atoms was postulated from Geiger and Marsden's metal foil experiment? Keep it brief ( < one sentence)! (3 points) Dante Festive, AMZL-ts , ‘______’___,.,. 2. In each pair, circle the type of radiation with the shortest wavelength: (6 points) \ /blue visible light. How visible light ultraviolet ligW4‘a radio waves @crowav/eg/QV 3. Jerry tells you in discussion section that tin and antimony are nearly physically indistinguishable and carry similar chemical properties because they are in the same period. Do you think he's correct? Why or why not? (3 points) Mltfllcrxl eff; a; dept/ml Mvgtl 7 on "43: \Mliflce 7,17 v ‘1‘ _. ,, «"A .,V 14 UL “If” 5’ Clm’k if ‘5 (4 Cl‘p‘Wl/‘WPl w’l ’l'o a‘l’t/ linth (la [NJ/’7, J.) 4%) (;‘M(l(:Lr r“ N‘Ilkc‘r: (5 Name (Last, First): Quiz 1 UCSD PID: |A|_|_|_|_|_|_|_|_| Chemistry 6A Fall 2008 Signature: Form E08 4. Jerry's car is in neutral at the bottom of two hills. His friends roll a 2.35 x 103 kg truck down the first hill from a height of 40.0 m, colliding with Jerry's car and dissipating 5.36 x 105J in sound and heat. Jerry's car travels at 100. km/h immediately after the collision and rolls up the second hill, completely intact. (a) How much does Jerry's car weigh? (4 points) [1'1 I /' " ‘1‘!) K»! V P " (A. ’ f7. : P \) Prat/M “‘6 C J \ < .L j I 3.}41 i M'ng‘mry'o"m I ’ _ ,- n - -. V" 7W» W 4AM Hair Kb:— 5s>2v§ l 1’ J (b) Neglecting friction, how far up the second hill does Jerry's car travel? If you did not get a value for part (a), use 1.50 t. (4 points) / 7r 4' - M: KIWMW J i 2%, Z‘l’ In MW , , ‘ W5:- sv v r?” a ‘ K‘ _ Ll‘zt. ‘1/9) 1 zygx’ 7 m \A‘Sfl3 Ir 2 1A; 3%3‘513 ' . Z An Won't; (‘léctténisq m J ...
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quiz1_key_jjl052 - Name (Last, First): K Quiz 1 UCSD PID:...

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