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### Ph101-08&09-2md2

Course: PHY 101, Spring 2007
School: Kuwait University
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Word Count: 613

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1: Part Choose the right answer 1. A Newton is the force: a) that gives a 1 gm body an acceleration of 1 cm/s2 b) that gives a 1 kg body an acceleration of 1 m/s2 c) that gives a 1 kg body an acceleration of 9.8 m/s2 d) of gravity on a 1 kg body 2. A physics book is suspended on a scale in an elevator, of the following, the scale shows the highest reading when the elevator: a) moves downward with increasing speed...

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1: Part Choose the right answer 1. A Newton is the force: a) that gives a 1 gm body an acceleration of 1 cm/s2 b) that gives a 1 kg body an acceleration of 1 m/s2 c) that gives a 1 kg body an acceleration of 9.8 m/s2 d) of gravity on a 1 kg body 2. A physics book is suspended on a scale in an elevator, of the following, the scale shows the highest reading when the elevator: a) moves downward with increasing speed b) moves downward with decreasing speed d) moves upward with decreasing speed e) moves upward at constant speed v 3. If the block moves with constant speed by means of force P as shown which of the following must be true: a) P = fr and N = W b) P = fr and N > W c) P > fr and N < W d) P > f and N = W W N P fr v W : weight fr : friction v N : normal 4. A marble moves along the x-axis. The potential-energy function is as shown in the figure. If the marble is released from rest at position x = 1m then its kinetic energy at x = 4m is a) 30 J b) 20 J c) 10 J d) zero 30 20 10 40 u 1 2 3 4 5 6 m Part II: Solve the following problems: 1. Three blocks (m1 = 1kg, m2 = 2 kg, and m3 = 3 kg) are pushed along a horizontal frictionless surface v F = 30 N as shown. Find the magnitude of the force (in Newton) exerted by m3 on m2? v F a= F 30 = m1 + m 2 + m 3 6 m1 m2 m3 a =5m / s2 F32 = F23 = m 3 a F23 = 3(5) = 15N 2. If the maximum tension in the string is 30 N find the maximum value of m ( in kg) before the string breaks. [the coefficient of static friction s is 0.50, and = 37 ] Fx = mg sin s mg cos T = 0 m= T 30 = g (sin cos s ) 10[0.6 0.5 (0.8)] m T m = 15 kg 3. A 1.6 kg block slides down a plane inclined at 53 to the horizontal with a constant speed of 2 m/s. Find the instantaneous power (in Watt) due to friction? fk Fx = mg sin f k = 0 f k =1.6 (10) sin 53 =12.8 N rr P = f k v =12.8 (2) (cos180) = 25.6 Watt mg 4. A spring with constant k = 600 N/m is initially compressed by a 0.4 kg block a distance x= 0.10 m from its equilibrium position. The block is then released. How far ( in m) up the incline does it travel before coming momentarily to rest. E i = E f u ig + u is + k i = u fg + u fs + k f 1 0 + kx 2 + 0 = mg h + 0 + 0 2 h = d sin 1 (600) (0.1) 2 = 0.4 (10) sin 37 2 d = 1.24 m x 37 0 5. Two masses m1 = 4 kg and m2 = 2 kg are attached with a cord that passes over a massless pulley as shown in the figure. If they start from rest, then find their speed ( in m/s) when they travel a distance of 0.8 m. (k = 0.3) Wtot = K Wg1 + Wg 2 + Wf = K f K i m1gd m 2 g d sin k (m 2 g cos ) d 1 = (m 1 + m 2 ) v 2 2 m1 m2 1 4(10) (0.8) 2 (10) (0.8) sin 37 0.3 (2) (10) [cos 37] 0.8 = (4 + 2 ) v 2 2 v = 2.48 m / s 37 6. A small object of mass m slides along a frictionless surface with speed vo then up a frictionless track of radius R= 0.8 m. What is the smallest value of v ( in m/s) such that the object will slide without loosing contact with the track at the top as shown in the figure? Ei = Ef ui + Ki = uf + Kf 1 1 2 0 + mv 0 = mg (2R ) + mv 2 2 2 2 v N + mg = m R N = 0, then v 2 = gR 12 1 v 0 = 2gR + gR 2 2 2 v 0 = 5 (10) (0.4) v 0 = 4.47 m / s R vo m
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Kuwait University - PHY - 101
Kuwait UniversityDepartment of Physics PHYS 101Date : August 8, 2009Second Mid Term ExaminationGeneral Physics 1Time: 9.00- 10.30 AM 0.30Students Name:_KU ID:_Section:_ :_ Instructors : Drs. Ashraf Zaher, Adnan Yasin, Fatemah Al-Dousari, Drs. Hala A
Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics DepartmentFirst Midterm Exam (Summer Semester) J ul y 7 , 2 0 0 5-Time: 10.30 to 12.15 p.m.NameStudent No. Instructors: Drs. Bhatia, Farhan, Lajko, Marafi, Rakhshani, Razee, SharmaFundamental Constantsk= 1 = 9.0
Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics DepartmentFirst Mid Term Examination March 22, 2007 11.00 am 12.30 pmName Student No. Instructors: Drs. Abdel Karim, K. Bhatia, E. Davis, A. Farhan, Y. Kokay, P. Lajko, H. Manaa, M. Marafi, S. Razee, M. Sharma. Note
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
1. The uniform electric field between two conducting charged plates shown in the figure has a magnitude of E = 28.40 N/C. The plate separation is 1 m, and we launch an electron from the bottom plate directly upward with vo = 3106 m/s. Will the electron re
Kuwait University - PHY - 101
Part I: Problems1.Show units.yBelow, q1 (= 2.0 C) and q2 (= 3.0 C) are point charges; a = 2.0 mm. Find the y component (in N) of the net electric force on a point charge q (= 4.0 nC) at point P .q1x(3 points)F1 q2 F2 aPaFy = +F1 =k |q |q1 = +1
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
Kuwait UniversityPhysics DepartmentPhysics 102 First Midterm Exam Second Semester (2008-2009)April 16, 2009 (6.00- 7:30 p.m.)Name: Student No: .Instructors: Drs. Abel Karim, Afrousheh, Davis, Kokaj, Marafi, Rakhshani, Ramadan, Razee, and Sharma(Fun
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
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Kuwait University - PHY - 101
Kuwait UniversityPhysics DepartmentPhysics 102 Second Summer Midterm Examination July 24, 2005 Time: 5:00 pm 6:45 pm NameStudent No. Instructors: Bhatia, Rakshani, Farhan, Lajko, Marafi, Razee &amp; SharmaFundamental constantsk=1 = 9.0 10 9 N m 2 / C 2 4
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
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Kuwait University - PHY - 101
Part I: Problems1.Show working.A 315 F capacitor has dielectric (dielectric constant of 2.90) lling the 0.275 mm gap between its parallel plates. The charge on each plate has magnitude 0.167 C. What is the magnitude of the surface charge density on eac
Kuwait University - PHY - 101
Physics 102 Midterm (2) Solutions Summer 2206/2007 Part I: Solve the following Problems1. A copper wire of length L = 100 m connects two points A &amp; B. The electric potential at point B is 25 V less than that at point A. If the resistivity of copper is 1.
Kuwait University - PHY - 101
Problems - Show your solution in detail. 1. Find the potential difference between points a and b shown in the figure. Given C1 = 1 F, C2 = 2 F, C3 = 3 F, C4 = 4 F, C5 = 5 F, and V2 = 12 V. 3 pointsC1C2 V2C3Q 1 = Q2 = Q3 = C 2V2 = 24 C ; Q 24C V1 = 1 =
Kuwait University - PHY - 101
Solve the following 8 problems:1.(2 marks) Four identical capacitors, each of capacitance 1F, are connected to a source with emf as shown in the figure. Calculate the equivalent capacitance of the network. CC CCCeq = 3C/52.(5 marks) Two air-filled ca
Kuwait University - PHY - 101
Part I: Problems 1. Two parallel plate capacitors ( C1 = C2 = 10 F) are connected in parallel as shown in the figure below. Initially each capacitor carries a charge q = 10 C. An insulating material with dielectric constant K = 4 is inserted between the p
Kuwait University - PHY - 101
Problems1.Please show all working; give only one solutionA proton moves in a region of uniform electric and magnetic elds: E = (75.0 N/C)b and B = (0.200 T)b + (0.300 T)b + (0.400 T)b. Find the components of the protons acceleration a when its velocity
Kuwait University - PHY - 101
Kuwait University Physics 102 Fall Semester 2008-2009Physics DepartmentSecond Midterm Examination December 20, 2008 Time: 3.00 p.m. to 4.30 p.m. Name:. Student No:.Instructors: Drs. AbdelKarim, Afrousheh, Davis, Kokay, Lajko, Marafi, Rakhshani, Razee,
Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics DepartmentSecond Midterm Exam Summer Semester (2008-2009)August 5, 2009 (6.00- 8:00 p.m.)Name: Student No: .Instructors: Drs. Abel Karim, Afrousheh, Davis, Marafi, Ramadan, Razee, Manaa, Kota Rao(Fundamental con
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
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Kuwait University - PHY - 101
Kuwait University Physics 102Physics DepartmentFinal Exam - Semester II (2006-2007)May 30, 2007 (11.00 a.m. - 1:00 p.m.)SolutionsName: Student No: .Instructors: Drs. M. Abel Karim, Bhatia, Davis, Farhan, Lajko, Manaa, Marafi, Razee, and Sharma(Fund
Kuwait University - PHY - 101
Problems - Detailed solution is required. (Solutions) 1. Four point charges are located on the x-y-plane as shown in the figure. Given q = 1 nC, the x-component of the electric field at the origin is:3 pointsa) 18.0 N/C b) 12.7 N/Cq (1m, 1m)yq (1m, 1
Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics DepartmentFinal Examination January 9, 2008 Time: 11.00 a.m. 1.00 p.m.Name Student No. Instructors: Drs. AbdelKarim, Bhatia, Farhan, Kokaj, Davis, Manaa, Lajko, Razee,(Fundamental constants) k=1 = 9.0 10 9 N. m 2
Kuwait University - PHY - 101
1 1. The point charge Q below is stationary. The electric potential energy U of the system is 37 nJ if point charge q is at A. As q moves from A to B , the work done on q (by the electric eld of Q) is +23 nJ. What is U when q is at B ? [2] Q B AqU = UB
Kuwait University - PHY - 101
1Part I: Solve the following 10 problems1. An electron escapes from the surface of a conducting sphere with radius 5 cm and charge -5 C. What is the highest acceleration which the electron experiences? (2 points)F= a= kQe R2F = 3.2 1018 ms 2 m2.What
Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics Department Final ExaminationJanuary 18, 2009 Time: 11.00 a.m to 13.00 p.m. -NameStudent No.Instructors: Drs. Abdel-Karim, Afrousheh, Davis, Kokay, Lajko, Marafi, Rakhshani, Razee, Sabah &amp; Sharma Fundamental constan
Kuwait University - PHY - 101
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Kuwait University - PHY - 101
Kuwait UniversityPhysics 102Physics DepartmentFinal Exam Summer Semester (2008-2009)August 16, 2009 (5:00- 7:00 p.m.)Name: Student No: .Instructors: Drs. Abel Karim, Afrousheh, Davis, Marafi, Ramadan, Razee, Manaa, Kota Rao(Fundamental constants)
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