Wichita native Dr. Brain Mueller returned to a Wichita stage for a marimba solo. Mueller‚ a Wichita State University graduate‚ joined the WSU Impulse Percussion Group for their Marimba Spiritual concert. The concert was held at Miller Concert hall Monday evening. Directed by Gerald Scholl‚ the IPG played a diverse set of seven songs. The first song‚ titled “Fractalia” was a beautiful piece. It was slow‚ but powerful and sounded as if the audience was transported to the rainforest. The next
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followed by the expulsion of water and air out of the nozzle until the internal and atmospheric pressures are equalised. This action creates a downward force and‚ by applying Newton’s Third Law of Motion‚ it can be shown that in order for the total momentum of the system to remain constant and equal to zero (i.e. the
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of the conservation of linear momentum from three main different types of momentum‚ namely: head on collision of equal masses‚ head on collision on unequal masses and exploding carts. Theory In the 17th century‚ Isaac Newton was the one who realized that the momentum is conserved in collision. Momentum is the product of mass and velocity (direction). In the other way‚ momentum is also a vector so the direction is important to the determination of the total momentum of a system of objects. Furthermore
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Box pushed with a force 125 N for 2.00 min. What is the impulse? Impulse=125N*120s Impulse=15000Ns=15000(kg*m/s^2)(s) Impusle=15000kg*m/s 7. 15.0g bullet fired. Muzzle velocity 3250m/s from a rifle with mass 4.74kg and barrel length 75.0 cm. A) How long is bullet in barrel? d/s=t B) what is the force on the bullet while in the barrel? C) Find the bullet’s momentum as it leaves barrel. a) t=75cm/3250m/s 100cm=1m 75cm/1* 1m/100cm= .75m t=.75m/3250m/s=2
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Used Equations Mechanics velocity Δ s v= Δ t ds v= dt acceleration Δ v a= Δ t dv a= dt equations of motion v = 0+at v x =x0+v 0 +½ 2 t at weight W =m g momentum p =m v dry friction ƒ μ =N centrip. accel. v2 ac = r 2 ac =−ω r impulse J =F Δ t impulse–momentum F Δ= Δ t m v J =⌠ dt F ⌠ dt =Δ F p ⌡ kinetic energy potential energy ⌡ K =½ mv 2 gravitational p.e. Δ g =mgΔ U h Δ =−⌠ · U F ds ⌡ F =−∇U v
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Assignment – Physics 1 1. Two carts‚ one twice the mass of the other‚ experience the same force for the same time. What is their difference in momentum? What is their difference in kinetic energy? 2. A 12 g bullet is fired horizontally into a 96 g wooden block initially at rest on a horizontal surface. After impact‚ the block slides 7.5 m before coming to rest. If the coefficient of kinetic friction between block and surface is 0.60‚ what was the speed of the bullet immediately before impact
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Physics Preliminary 8.2 The World Communicates 1. The wave model can be used to explain how current technologies transfer information 1. Describe the energy transformations required in one of the following: – Mobile telephone – Fax/modem – Radio and television A. An energy transformation is a change in the type of energy‚ for example a change from sound energy to electromagnetic waves. Relating this to the mobile telephone‚ it undergoes basic energy transformations of‚ sound wave
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[pic] The product of average force and the time it is exerted is called the impulse of force. From Newton’s second law [pic] the impulse of force can be extracted and found to be equal to the change in momentum of an object provided the mass is constant: |[pic] |Calculation | The main utility of the concept is in the study of the average impact force during collisions. For collisions‚ the mass and change in velocity are often
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Physics in Everyday Life 1 Just about everything you do from moving to eating to listening to music involves physics. Now that I have really explored them I think it is hard to go about our day and not do something that involves physics. Some of the things I will talk about are getting out of bed‚ the eye and how eye glasses help a person see better‚ speakers‚ the Frisbee‚ sailing‚ and the pulleys I use to get my jeep unstuck in the mud when I ride in the woods. All of these
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successful steam turbine appeared at the end of nineteenth century when Gustaf De Laval designed a high speed turbine built on the principle of reaction turbine in 1883. Before this in 1629 G. Branca developed the first impulse turbine. Branca’s impulse turbine and Hero’s reaction turbine are shown in Fig. 1.1. Figure 1.2 Hero and Branca’s turbine. In nineteenth century some more steam turbines were developed by Sir Charles A. Parsons and C.G. Curtis which gave a filip to the development
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