Chapter 9 Problems 1‚ 2‚ 3 = straightforward‚ intermediate‚ challenging Section 9.1 Linear Momentum and its Conservation 1. A 3.00-kg particle has a velocity of [pic]. (a) Find its x and y components of momentum. (b) Find the magnitude and direction of its momentum. 2. A 0.100-kg ball is thrown straight up into the air with an initial speed of 15.0 m/s. Find the momentum of the ball (a) at its maximum height and (b) halfway up to its maximum height. 3. How fast can you set the Earth
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Journal of Manufacturing Systems Vol. 16/No. 5 1997 A Systems Model and Simulation of the Vibratory Bowl Feeder Gary P. Maul and M. Brian Thomas‚ The Ohio State University‚ Columbus‚ Ohio ture of a vibratory bowl feeder is the maximum speed at which it can convey parts. Though not the first to research vibratory feeders‚ he worked independently of other investigators to develop a basic theory of operation. He defined the essential parameters for bowl analysis and with these defined the
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3.2.1 Study: Therein Lies the Rub Study SheetStudy Sheet Physical Science (S2541215) Claire Hasenoehrl Date: ____________ Use the spaces below to take notes on the key concepts presented in this study. Main idea: Friction is the force that opposes motion when two surfaces rub together. The force that opposes motion when two materials touch each other. causes object to accelerate downward The force between two objects at rest that opposes their sliding relative to each other. The frictional
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Introduction Super-hydrophobic surfaces‚ as well as‚ low adhesion and friction are desirable for various industrial applications. Hydrophobic (water-repellent) surfaces can be constructed either by using low surface energy materials or by chemically treating surfaces with materials such as polytretafluoroethylene‚ silicon‚ or wax. Another technique that can be used to increase the hydrophobic properties of a hydrophobic surface is to increase the surface area by increasing surface roughness. If
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block. 4. Place the mode of friction (felt‚ aluminum foil‚ carpet‚ or sandpaper) on top of the incline plane. 5. Place the wooden block on top of the incline plane on the side closest to the floor. 6. Connect the spring scale to the wooden block and steadily drag the block up the incline plane. 7. Record the initial force and the continuous force of the wooden block in Newtons. 8. Change the mode of friction and repeat steps 3-5 over again. Data Table- Friction Material Sandpaper Aluminum
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FIRST MID-QUARTER ASSESSMENT IN SCIENCE (8th Grade – Candid Puffin) Name: _____________________ Date: ________________ I. KNOWLEDGE A. Identification. Identify the law/concept that explains each of the given phenomena. Write only the letter of the correct answer on the space provided. A – Law of Inertia B – Law of Acceleration C – Law of Interaction _____ 1. Recoil of a gun when fired _____ 2. Two men find a car harder to push than a tricycle _____ 3. A body moves backward
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kg from the floor to a height of 1.98 m. How much work does he do? W=FΔd=Eg Eg=mgΔh m=254 kg Δh=1.98 m Eg=(254)(9.8)(1.98) Eg=49528.62 J W=49528.62 J A child drags a 20-kg box across a lawn for 10 m and along a sidewalk for 30 m the coefficient of friction is 0.25 for the first part of the trip and 0.55 for the second. If the child always pulls horizontally‚ how much work does the child do on the box? WTotal=F1Δd1+F2Δd2 F1=FN=μmg Δd1=10 m m=20 kg μ=0.25 W1=(0.25)(20)(9.8)(10)
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PHYS 1401 College Physics I Test 2 Page 1 of 6 Houston Community College System PHYS 1401 Test # 2 PHYS 1401 College Physics I Test 2 Page 2 of 6 Name ______________________________________________________ Date ____________ PHYSICS 1401. Test 1 Chapters 3‚ 4 and 5 _____________________________________________________________________________ INSTRUCTIONS: Answer all questions from Section I (2 points per question). And Solve at least four problems from Section II (20 points
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BASE ISOLATION: FRICTION PENDULUM SYSTEM SARNOT ANUP A.‚ JAIN KRUTIK P‚ CHOUDHARY JUNAID A‚ U.G.Students Department of Civil Engineering D.M.College of Engineering Sector-3‚ Airoli‚ New Mumbai- 400 708 Abstract: The Base Isolation is one of the passive control techniques to reduce the earthquake effect on the structure up to negligible level. Base isolation system are‚ Elastomeric Bearing‚ Sliding Isolation System and Combined Systems. Elastomeric bearing has a problem of tearing of rubber
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Part One: The friction model is the idea that there are various sources that work together to keep policies in place so that the status quo prevails for extended periods of time. There are many different players within the friction model that try to help protect the status quo‚ but other ideas that try to go against the model and change it. The friction model has a head start as it is much easier to protect the status quo than to change it. A major problem policy changer’s face is lack of attention
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