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    Electromagnetic Induction Lab. Magnet through a coil

    I apologize in advance if some of my answers don't quite make sense. I'm generally articulate, but not when it comes to physics I'm barely grasping. I did a lab and part of it was dropping a magnet through a coil, which produced a Voltage vs Time graph using LabPro. For trial 1 we had the N...
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    Final velocity of a proton through parallel plates

    Homework Statement A moving proton has 6.4x10^-16 J of kinetic energy. The proton is accelerated by a potential difference of 5000 V between parallel plates. http://members.shaw.ca/barry-barclay/Self-Tests/test09/elecst17.gif The proton emerges from the parallel plates with what...
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    Collision. A moving object hits a stationary object and moves at an angle

    Thanks for the help. Not sure I followed it all exactly, and it was long past when it had to be handed in. I kind of gave him two papers and told him, "Take this one, no this one, wait, maybe this one" and he just took both so we'll see what happens. I don't know why my grasp of vectors is...
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    Collision. A moving object hits a stationary object and moves at an angle

    Ok so I found the difference in momentum for ball 1(.400kg) is 0.280kg m/s. Then I used that to find that ball 2's velocity is that divided by the mass (.500kg) to get 0.560m/s. Now I just need the direction. I know in a different question we assumed the y components were the same, so can I...
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    Collision. A moving object hits a stationary object and moves at an angle

    Yes I used the squared 0.500kg. Should I be using the 30, 60, 90 triangle made by the x and y components of the momentum of the .400kg ball? I'm not sure how to use ball 1 to figure out ball 2's(the heavier one) direction.
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    Collision. A moving object hits a stationary object and moves at an angle

    This is all I have. Some one please please pleeeeeaaaase check this over and see if I'm in any way on the right track. I haven't had much sleep the past few days and am really stressing over my courses. This is a take home part of our unit test. I hope I did this right because it could really...
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    Finding Momentum of a fragment after explosion

    Homework Statement A small explosive device slicing to the right breaks into two pieces. The momentum of fragment 1 after the explosion is 23kg.m/s 28°RCS What is the momentum of fragment 2 after the explosion? Homework Equations PT=PT' P=mv Rx= Rcos∅ Ry= Rsin∅ R= √x2+y2 The...
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    Kinetic Energy of a mass moving in horizontal circle

    Just to update, I got that question correct. In the solution the teacher showed us, he combined the two formulas and got the same answer.
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    Kinetic Energy of a mass moving in horizontal circle

    Homework Statement A mass moves in a circular path that has a radius of 24.6cm on a horizontal frictionaless surface. If the centripetal force acting on the mass is 96.5N, what is the kinetic energy of the mass? r=0.246m Fc=96.5N Homework Equations He told us to use these and "play...
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    Finding displacement with coefficient of friction, mass and velocity

    So the acceleration would be negative and friction would influence it. I just don't know what to use to find Fnet, not knowing Fa. Is Fnet -4.0N ? The negative force of friction?
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    Finding displacement with coefficient of friction, mass and velocity

    The only equations we have are: Fnet=ma Fg=mg Ff=μFN a=(Vf-Vi)/t Vf2=Vi2+2ad d=Vit+1/2at2 d=[(Vf+Vi)/2]t
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    Finding displacement with coefficient of friction, mass and velocity

    Homework Statement A physics student slides a 2.0kg textbook along the laboratory bench to her friend. She imparts to the book an initial velocity of 2.70m/s. μ=0.20. How far away is her friend if the book comes to a stop right in front of her friend Vi= 2.70m/s μ=0.20 m=2.0kg Vf= 0m/s...
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    Finding mass within a pulley system. Finding coefficient of friction

    Thanks for your help. I tend to overthink these things
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    Finding mass within a pulley system. Finding coefficient of friction

    I'm not having problems with the others, just when I need to find a mass with minimal info. Fg1-FT=ma Use the total mass of the system. The difference of force of gravity and tension on the rope would be the net force acting on the system.
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    Finding mass within a pulley system. Finding coefficient of friction

    --- Ok I think I solved it. Ff is Fnet in the direction of acceleration? So since it's decelerating, wouldn't it accelerate in the direction of the friction? So Ff=ma Ff=24N μ=Ff/FN μ=24N/441N μ=0.05442
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    Finding mass within a pulley system. Finding coefficient of friction

    I got the mass...I think. FT=ma. 6.0N=m1(9.81m/s2) So m1=0.6112kg Now for the other one...
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    Finding mass within a pulley system. Finding coefficient of friction

    Ok so I'm in college upgrading, and doing my physics 20. I have a hand in assignment due Wednesday and I can't for the life of me figure out these two questions. 6. The 4.0kg block shown accelerates across a frictionless horizontal table at 1.5m/s2. Find the mass of object m1 A. 0.61kg B...
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