# Work­Energy Theorem Reviewed - Physics and Astronomy at TAMU

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Work on a Sliding Block Description: A box is pushed up a frictionless incline. Find the work done by gravity, the pushing force, and the normal force. A block of weight sits on a frictionless inclined plane, which makes an angle with respect to the horizontal, as shown. A

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Work­Energy Theorem Reviewed - Physics and Astronomy at TAMU
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(30) 7, The capacitors in the figure are initially uncharged and are connected, as in the diagram, with switch S open. The applied potential Wfference is V, 210 V.
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A test car travels in a straight line along x axis. The figure below shows the car’s position x as a function of time. Find: a) Position of the car at t0=Os,t1=3s,t2=5sand t3=6s b) x-componentof car’s displacement and average velocity during time interval from to to t1andt2 tot3
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When a gas is taken from a to c along the curved path, the work done by the gas is W =-35J and the heat added to the gas is is Q =-63J. Along the path abc, the work done is W =-54J. a) What is Q for path abc? b) IfP = P1,/2,what is W for path cda?
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F E = qE F B = qvB qE = qvB v = E B = 10 V m 2T = 5m s If it is a proton, the electric eld will push it in the direction of 225 degrees. To counter it, the magnetic eld must produce a force at 45 degrees. Using the right-hand rule, we nd that the velocity must be at 315 degrees. It doesn’t matter what the particle is, it must have a velocity ...
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A sinusoidal wave traveling on a string in the negative x direction has amplitude 1.00 cm, wavelength 3.00 cm, and frequency 245 Hz. At t=0, the particle ofstring at x=0 is displaced a distance y= 0.80 cm above the origin and is moving upward. a) Sketch the shape ofthe wave at t=0.
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(20) 5. The figure shows a system of four capacitors, where the potential difference across ab is 50 volts. a. Find the equivalent capacitance of this system between a and b.
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A force acting on a particle moving in the xy plane is given by F = 2yi + x2jwhere x and y are in meters. The particle moves from the origin to a final point having
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Physics 218: Exam 1 Sections 501-533, 558, 561, 565, 573-583, 591-595 October 1, 2014 Please read the instructions below, but do not open the exam until told to do so . Rules of the Exam: 1. You have 75 minutes to complete the exam. 2. Formulae are provided on the last page. You may NOT use any other formula sheet. 3.
Chapter 6 Homework Assignment – Work-Energy Theorem Work
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Once you have decided to solve a problem using Newton's 2nd law, there are steps that will lead you to a solution. One such prescription is the following: Visualize the problem and identify special cases. Isolate each body and draw the forces acting on it. Choose a coordinate system for each body.
1 Problem 9 - Physics and Astronomy at TAMU
Start with the Maxwell-Boltzmann distribution for velocity: n(v)dv= 4ˇN V m 2ˇkT 3=2 v2e mv 2 2kT dv Remember that for kinetic energy, we have E= 1 2 mv2 ... Sketch C. Where is it maximized? Explain the relationship in physical terms. 4. 6.1 Solution ... Show that the average kinetic energy in a Fermi gas is E 3 5 E F. 10. 9.1 Solution For a ...
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has velocity —4.00 m/s and displacement ±0.200 m. 13.13. The point of the needle of a sewing machine moves in SHM along the x-axis with a frequency of 2.5 Hz. At t = 0 its position and velocity components are +1.1 cm and — 15 cm/s. respectively (a) Find the acceleration component of the needle at t = 0.
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MP Chap. 7 - Physics and Astronomy at TAMU
Consider a uniform gravitational field (a fair approximation near the surface of a planet). Find U(Yf) — U(yo) — where and Express your answer in terms of , and m, g, Yo Potential Energy Calculations Description: Calculate the changes in potential energy by integrating the force laws for the uniform gravity, for the spring that obeys
Exercise 14 - Physics and Astronomy at TAMU
Description: A certain simple pendulum has a period on the earth of T. (a) What is its period on the surface of Mars, where g = 3.71 ( m/s)^2? A certain simple pendulum has a period on the earth of 2.00 .
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1 Problem 6.2 A system is de ned by the wavefunction: (x) = Acos 2ˇx L for L 4 x L 4 (a) Determine the normalization constant A. (b) What is the probability that the particle will be found between x= 0
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Description: Two uniform spheres, each of mass 0.260 kg, are fixed at points A and B (the figure ). (a) Find the magnitude of the initial acceleration of a uniform sphere with mass 0.010 kg if released from rest at point P and acted on only by forces of...
MP Chap. 6 - Physics and Astronomy at TAMU
We will start with a special case: a particle of mass m moving in the x direction at constant acceleration a. During a certain interval of time the particle accelerates from Vinitial to Vfinal undergoing displacement given by S — Part A Find the acceleration a of the particle Express the acceleration in terms of and MasteringPhysics.
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PROBLEMS? 14.3 Answer: (1) Consider the water, the statue, and the container together as a system; the total weight of the system does not depend on whether the statue is immersed. The total supporting force, including the tension T and the upward force F of the scale on the container (equal to the scale reading), is the same in both cases.
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D e s c r i p t i o n : The earth has a radius of 6380 km and turns around once on its axis in 24 h. (a) What is the radial acceleration of an object at the earth's equator? Give your answer in (m/s)^2. (b) What is the radial acceleration of an object at the earth's...
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P a r t A Find the tension in the cable in the arrangement (a). Express your answer in terms of . ANSWER: P a r t B Find the magnitude of the force exerted on the strut by the pivot in the arrangement (a). Express your answer in terms of . ANSWER: P a r t C Find the direction of the force exerted on the strut by the pivot in the arrangement (a ...
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Description: A 12.0­kg box resting on a horizontal, frictionless surface is attached to a 5.00­kg weight by a thin, light wire that passes without slippage over a frictionless pulley (the figure ). The pulley has the shape of a uniform solid disk of mass M and...
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Work-Energy Theorem The kinetic energy is dened as K = 1 2 mv2 The work done by the net force on the system equals the change in kinetic energy of the system Wnet = Kf Ki = K This is known as the work-energy theorem Units of K and W are the same (joules) Note: when v is a constant, K = 0 and Wnet = 0, e.g. Uniform circular motion 3
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Earth / l) = (√9.80 / 3.71) ×1.60 s = 2.60 s. That is, the period is longer on Mars, because lower gravitational acceleration on . Mars makes the swinging motion slower. (13.52) 1.80 kg monkey wrench pivoted 0.250 m from its center of mass. Allowed to . swing as a physical pendulum. Period of small-angle oscillation = 0.940 s. (a)
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CHAPTER 22 GAUSS’S LAW ... Flux of bullets is number of bullets times area of sheet perpendicular to bullets. » Î Å Å ¾ Í Ì » Î Å Å ¾ Í Ì Ì Á ¾ ¾ Í 3 Turn sheet on edge. ... Charge on wire? Charge per unit length λ ...
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A computer disk drive is turned on starting from rest and has constant angular acceleration. P a r t A If it took 0.680 for the drive to make its second complete revolution, how long did it take to make the first complete
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Exam4 2004 Sinova - Physics and Astronomy at TAMU
of wavelength 600 nm. Which one of the following statements best describes the diameter of the lens in the telescope? A) It is less than 0.14 m. B) It is greater than 0.14 m and less than 0.23 m. C) It is greater than 0.23 m and less than 0.35 m. D) It is greater than 0.35 m and less than 0.52 m. E) It is greater than 0.52 m. (5)6.
Exam2 practice 2004 - Physics and Astronomy at TAMU
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CHAPTER 25 HOMEWORK SOLUTIONS 25.8.IDENTIFY: IQt / .Positive charge flowing in one direction is equivalent to negative charge flowing in the opposite direction, so the two currents due to Cl and Na+are in the same direction and add. SET UP: Na+ and Cl each have magnitude of charge qe EXECUTE: (a) 16 16 19 Qnnetotal Cl Na( ) (3.92 10 2.68 10 )(1.60 10 C) 0.0106 C.
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A rocket fires two engines simultaneously. One produces a thrust Of 957 N directly forward while the other gives a 558 N thrust at 36.5 degrees above the forward dirction. Find the magnitude of the resultant force ONLY in the forward direction Give your answer in Newtons to the nearest whole number.
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Work and Energy 1. If the velocity of a moving object is doubled, the object's kinetic energy is (1)unchanged (3)doubled (2)halved (4)quadrupled 2. Which cart shown below has the greatest kinetic energy? (1) (3) (2) (4) 3. As a block is accelerated from rest along a horizontal surface, its gravitational potential energy (1)decreases (3)remains ...
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