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### Exam 4 Solutions

Course: PHY 303K, Spring 2007
School: University of Texas
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Word Count: 3417

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04 midterm ALIBHAI, ZAHID Due: May 2 2007, 11:00 pm Question 1 part 1 of 1 10 points The diagrams below show dierent standing waves on a 49.5 cm string. Which of these waves has a 33 cm wavelength? 8. 1. correct 1 7. 2. 9. 3. 4. 5. 6. Explanation: A standing wave on a string has nodes where the string does not vibrate; these nodes are spaced half-wavelength from each other: x0 = 0, x1 = , x2 = 2 , 2...

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University of Texas - PHY - 303K
practice 02 ALIBHAI, ZAHID Due: Jan 28 2007, 4:00 am Question 1 part 1 of 2 10 points A person travels by car from one city to another. She drives for 31.2 min at 69.8 km/h, 8.5 min at 112 km/h, 47.4 min at 42.3 km/h, and spends 16.5 min along the way eat
University of Texas - PHY - 303K
Husain, Zeena Homework 13 Due: Apr 27 2004, 4:00 am Inst: Sonia Paban This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001
University of Texas - PHY - 303K
homework 02 BAUTISTA, ALDO Due: Jan 25 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. The graph below shows the velocity v as a function of time t for an object moving in a straight
University of Texas - PHY - 303K
homework 34 BAUTISTA, ALDO Due: Apr 24 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 2. 10 points. A satellite with mass m is orbiting around the Earth on a circular path with a radius r. Denote
University of Texas - PHY - 303K
Shie, Gary Oldquiz 1 Due: Sep 13 2004, 1:00 pm Inst: Turner This print-out should have 26 questions. Multiple-choice questions may continue on the next column or page nd all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 poin
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = b 2 a4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( ) sin + sin = 2 sin + cos 2 2 2
University of Texas - PHY - 303K
homework 10 ALIBHAI, ZAHID Latest unpenalized work: Apr 2 2007 Monday 04:00 (after this date you can not make a perfect score). Work cutoff: Apr 4 2007, 4:00 am. Question 1 part 1 of 1 10 points A flywheel of radius 0.53 m and moment of inertia of 17.5 kg
University of Texas - PHY - 303K
practice 12 ALIBHAI, ZAHID Latest unpenalized work: Apr 15 2007 Sunday 04:00 (after this date you can not make a perfect score). Work cutoff: Apr 15 2007, 4:00 am. Question 1 part 1 of 1 10 points Consider a car engine running at constant speed. That is,
University of Texas - PHY - 303K
Husain, Zeena Homework 5 Due: Feb 23 2004, 4:00 am Inst: Sonia Paban This print-out should have 38 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001
University of Texas - PHY - 303K
Bautista, Aldo Homework 13 Due: Dec 2 2005, 4:00 am Inst: Maxim Tsoi This print-out should have 27 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of
University of Texas - PHY - 303K
homework 23 BAUTISTA, ALDO Due: Mar 27 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 3. 10 points. An air puck of mass 0.353 kg is tied to a string and allowed to revolve in a circle of radius 0
University of Texas - PHY - 303K
homework 10 BAUTISTA, ALDO Due: Nov 6 2006, 4:00 am1Mechanics - Basic Physical ConceptsMath: Circle: 2 r, r 2 ; Sphere: 4 r2 , (4/3) r3 b2 Quadratic Eq.: a x2 + b x + c = 0, x = -b 2 a-4 a cCartesian and polar coordinates: y x = r cos , y = r sin , r
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = b 2 a4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( ) sin + sin = 2 sin + cos 2 2 2
University of Texas - PHY - 303K
homework 05 ALIBHAI, ZAHID Due: Feb 21 2007, 4:00 am Question 1 part 1 of 4 10 points A box of mass m with an initial velocity of v0 slides down a plane, inclined at with respect to the horizontal. The coecient of kinetic friction is . The box stops after
University of Texas - PHY - 303K
practice 07 ALIBHAI, ZAHID Due: Mar 4 2007, 4:00 am So we obtain Question 1 part 1 of 1 10 points Two identical stars, a fixed distance D apart, revolve in a circle about their mutual center of mass, as shown below. Each star has mass M and speed v. G is
University of Texas - PHY - 303K
Husain, Zeena Homework 5 Due: Feb 23 2004, 4:00 am Inst: Sonia Paban This print-out should have 38 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001
University of Texas - PHY - 303K
Bautista, Aldo Homework 2 Due: Sep 13 2005, 4:00 am Inst: Maxim Tsoi This print-out should have 27 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of
University of Texas - PHY - 303K
homework 12 BAUTISTA, ALDO Due: Feb 20 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. Given: g = 9.8 m/s2 . Consider a boxcar accelerating up a 15.9 slope. Inside the boxcar, an obj
University of Texas - PHY - 303K
practicework 06 BAUTISTA, ALDO Due: May 8 2006, 6:00 pm Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 6. 10 points. Asteroids X, Y , and Z have equal mass. They orbit in the same angular direction around a pl
University of Texas - PHY - 303K
homework 01 HELD, ETHAN Due: Jan 23 2007, 4:00 am Question 1 part 1 of 1 10 points A piece of pipe has an outer radius, an inner radius, and length as shown in the figure below. Question 2 part 1 of 1 10 points14.5 cm 2.5 cmm 36 cOne cubic meter (1.0
University of Texas - PHY - 303K
midterm 03 ALIBHAI, ZAHID Due: Apr 4 2007, 11:00 pm Question 1 part 1 of 1 10 points Consider the collision of two identical particles, where the initial velocity of particle 1 is v1 and particle 2 is initially at rest. v1 1 21A 23.4 kg person climbs up
University of Texas - PHY - 303K
practice 01 ALIBHAI, ZAHID Latest unpenalized work: Jan 22 2007 Monday 04:00 (after this date you can not make a perfect score). Work cutoff: Jan 21 2007, 4:00 am. Question 1 part 1 of 1 10 points A newly discovered giant planet has an average radius 19 t
University of Texas - PHY - 303K
Husain, Zeena Homework 12 Due: Apr 20 2004, 4:00 am Inst: Sonia Paban This print-out should have 19 questions. Multiple-choice questions may continue on the next column or page find all choices before making your selection. The due time is Central time. 0
University of Texas - PHY - 303K
homework 01 BAUTISTA, ALDO Due: Jan 23 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. A newly discovered giant planet has an average radius 18 times that of the Earth and a mass 792
University of Texas - PHY - 303K
homework 33 BAUTISTA, ALDO Due: Apr 21 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 2. 10 points. Two satellites A and B orbit the Earth in the same plane. Their masses and radii have the relat
University of Texas - PHY - 303K
Nguyen, Don Final 1 Due: Dec 8 2004, 5:00 pm Inst: Charles Chiu This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 1
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = -b 2 a-4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( - ) sin + sin = 2 sin + cos -
University of Texas - PHY - 303K
homework 10 ALIBHAI, ZAHID Due: Apr 4 2007, 4:00 am Question 1 part 1 of 1 10 points A ywheel of radius 0.53 m and moment of inertia of 17.5 kg m2 rotates initially at a rate of 7.3 revolutions/sec. If a force of 3.1 N is applied tangentially to the ywhee
University of Texas - PHY - 303K
practice 12 ALIBHAI, ZAHID Due: Apr 15 2007, 4:00 am For the problem at hand, Question 1 part 1 of 1 10 points Consider a car engine running at constant speed. That is, the crankshaft of the engine rotates at constant angular velocity while each piston mo
University of Texas - PHY - 303K
Husain, Zeena Exam 1 Due: Feb 17 2004, 11:00 pm Inst: Sonia Paban This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001 (pa
University of Texas - PHY - 303K
Bautista, Aldo Homework 12 Due: Nov 22 2005, 4:00 am Inst: Maxim Tsoi This print-out should have 26 questions. Multiple-choice questions may continue on the next column or page nd all choices before answering. The due time is Central time. 001 (part 1 of
University of Texas - PHY - 303K
homework 22 BAUTISTA, ALDO Due: Mar 24 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. A uniform flat plate of metal is situated in the reference frame shown in the figure below. 1
University of Texas - PHY - 303K
homework 09 BAUTISTA, ALDO Due: Oct 30 2006, 4:00 am1Mechanics - Basic Physical ConceptsMath: Circle: 2 r, r 2 ; Sphere: 4 r2 , (4/3) r3 b2 Quadratic Eq.: a x2 + b x + c = 0, x = -b 2 a-4 a cCartesian and polar coordinates: y x = r cos , y = r sin , r
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = -b 2 a-4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( - ) sin + sin = 2 sin + cos -
University of Texas - PHY - 303K
homework 04 ALIBHAI, ZAHID Latest unpenalized work: Feb 12 2007 Monday 04:00 (after this date you can not make a perfect score). Work cutoff: Feb 14 2007, 4:00 am. Question 1 part 1 of 2 10 points Four forces act on a hot-air balloon, as shown from the si
University of Texas - PHY - 303K
practice 06 ALIBHAI, ZAHID Latest unpenalized work: Feb 25 2007 Sunday 04:00 (after this date you can not make a perfect score). Work cutoff: Feb 25 2007, 4:00 am. Question 1 part 1 of 3 10 points A block starts at rest and slides down a frictionless trac
University of Texas - PHY - 303K
Husain, Zeena Exam 1 Due: Feb 17 2004, 11:00 pm Inst: Sonia Paban This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001 (pa
University of Texas - PHY - 303K
Bautista, Aldo Homework 1 Due: Sep 8 2005, 4:00 am Inst: Maxim Tsoi This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page nd all choices before answering. The due time is Central time. 001 (part 1 of 1)
University of Texas - PHY - 303K
homework 11 BAUTISTA, ALDO Due: Feb 15 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 2. 10 points. The coefficient of static friction between the person and the wall is 0.75 . The radius of the
University of Texas - PHY - 303K
practicework 05 BAUTISTA, ALDO Due: May 8 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 6. 10 points. Asteroids X , Y , and Z have equal mass. They orbit in the same angular direction around a p
University of Texas - PHY - 303K
final 01 HELD, ETHAN Due: May 9 2007, 11:00 pm1
University of Texas - PHY - 303K
midterm 02 ALIBHAI, ZAHID Due: Mar 7 2007, 11:00 pm Question 1 part 1 of 1 10 points The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The 3 kg block lies on a rough horizontal surface with a con
University of Texas - PHY - 303K
practice 01 ALIBHAI, ZAHID Due: Jan 21 2007, 4:00 am Explanation: Question 1 part 1 of 1 10 points A newly discovered giant planet has an average radius 19 times that of the Earth and a mass 201 times that of the Earth. Calculate the ratio of the new plan
University of Texas - PHY - 303K
Husain, Zeena Exam 4 Due: Apr 23 2004, noon Inst: Sonia Paban This print-out should have 7 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001 (part 1
University of Texas - PHY - 303K
quiz 03 BAUTISTA, ALDO Due: Apr 5 2006, 9:00 pm Version number encoded for clicker entry: V1:1, V2:1, V3:5, V4:5, V5:1. Question 1 Part 1 of 1. 10 points. A uniform bar of length L and weight W is attached to a wall with a hinge that exerts on the bar a h
University of Texas - PHY - 303K
homework 32 BAUTISTA, ALDO Due: Apr 19 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. Consider a car engine running at constant speed. That is, the crankshaft of the engine rotates
University of Texas - PHY - 303K
final 01 BAUTISTA, ALDO Due: Dec 19 2006, 11:00 pmGravity^ F21 = -G m12m2 r12 ,r121for r R,g(r) = G M r2G = 6.67259 10-11 N m2 /kg2 Rearth = 6370 km, Mearth = 5.98 1024 kg2 Circular orbit: ac = v = 2 r = r2 2 r = g(r) T M U = -G mr , E = U + K =
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = -b 2 a-4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( - ) sin + sin = 2 sin + cos -
University of Texas - PHY - 303K
homework 09 ALIBHAI, ZAHID Latest unpenalized work: Mar 26 2007 Monday 04:00 (after this date you can not make a perfect score). Work cutoff: Mar 28 2007, 4:00 am. Question 1 part 1 of 1 10 points Two identical balls are on a frictionless horizontal table
University of Texas - PHY - 303K
practice 11 ALIBHAI, ZAHID Latest unpenalized work: Apr 8 2007 Sunday 04:00 (after this date you can not make a perfect score). Work cutoff: Apr 8 2007, 4:00 am. Question 1 part 1 of 1 10 points Two weights attached to a uniform beam of mass 38 kg are sup
University of Texas - PHY - 303K
Husain, Zeena Homework 4 Due: Feb 16 2004, 4:00 am Inst: Sonia Paban This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001
University of Texas - PHY - 303K
Bautista, Aldo Homework 11 Due: Nov 15 2005, 4:00 am Inst: Maxim Tsoi This print-out should have 25 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 o
University of Texas - PHY - 303K
homework 21 BAUTISTA, ALDO Due: Mar 22 2006, 4:00 am1Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. Two identical balls are on a frictionless horizontal tabletop. Ball X initially moves at 10 m
University of Texas - PHY - 303K
homework 08 BAUTISTA, ALDO Due: Oct 23 2006, 4:00 am1Mechanics - Basic Physical ConceptsMath: Circle: 2 r, r 2 ; Sphere: 4 r2 , (4/ r3 3) b2 Quadratic Eq.: a x2 + b x + c = 0, x = b 2 a4 a cCartesian and polar coordinates: y x = r cos , y = r sin , r
University of Texas - PHY - 303K
Mechanics - Basic Physical ConceptsMathematicsb Quadratic Eq.: a x2 + b x + c = 0, x = b 2 a4 a c Cartesian and polar coordinates: y x = r cos , y = r sin , r 2 = x2 + y 2 , tan = x Trigonometry: cos cos + sin sin = cos( ) sin + sin = 2 sin + cos 2 2 2
University of Texas - PHY - 303K
homework 04 ALIBHAI, ZAHID Due: Feb 14 2007, 4:00 am Fy,net = Fy,1 + Fy,2 Question 1 part 1 of 2 10 points Four forces act on a hot-air balloon, as shown from the side. Given: Fx,1 Fx,2 Fy,1 Fy,2 = 229 N = 111 N = 216 N = 80 N Fnet = (Fx,net )2 + (Fy,net
University of Texas - PHY - 303K
practice 06 ALIBHAI, ZAHID Due: Feb 25 2007, 4:00 am Ug = m g h Question 1 part 1 of 3 10 points A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track (as shown in the figure below).
University of Texas - PHY - 303K
Husain, Zeena Homework 4 Due: Feb 16 2004, 4:00 am Inst: Sonia Paban This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page nd all choices before making your selection. The due time is Central time. 001
University of Texas - PHY - 303K
Graham, Andrew Finalexam 1 Due: Dec 15 2005, noon Inst: Maxim Tsoi This print-out should have 40 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1
University of Texas - PHY - 303K
homework 10 BAUTISTA, ALDO Due: Feb 13 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. Two blocks are arranged at the ends of a massless string as shown in the figure. The system sta
University of Texas - PHY - 303K
practicework 04 BAUTISTA, ALDO Due: May 1 2006, 4:00 am Version number encoded for clicker entry: V1:1, V2:4, V3:2, V4:4, V5:3. Question 1 Part 1 of 1. 10 points. The system shown in the figure is in equilibrium. A 12 kg mass is on the table. A string att