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What is the distance the spring compressed?

What is the distance the spring compressed? Topic: Case springs
June 25, 2019 / By Peace
Question: A 150 g block on a frictionless table is firmly attached to one end of a spring with k = 26 N/m. The other end of the spring is anchored to the wall. A 21 g ball is thrown horizontally toward the block with a speed of 5.4 m/s. If the collision is perfectly elastic, what is the maximum compression of the spring? By the way, the ball's speed immediately after collision is 4.1 m/s I have a test tomorrow night any help would begreat!
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Best Answers: What is the distance the spring compressed?

Marilene Marilene | 8 days ago
in this cases, assuming there are energy is in conserved....... firstly,you have to find the kinetic energy of the ball ke=mv^2 ke=(0.021)(5.4)^2 ke=0.61236 j kinetic energy is equal to the elastic potential energy ke=ep 0.61236=0.5kx^2 0.61236/0.5(26)=x^2 x=0.217035977
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Marilene Originally Answered: From where does a jet engine gets its initial compressed air?
There are several different ways to start a jet engine. Some use an electric starter motor. Others use bleed air from another engine, or from an on-board APU, or compressed air from a ground support unit that plugs into the airplane when it's parked on the tarmac. Early military jets even used explosive cartridges like big shotgun shells to get the engine's compressor section spinning. In any case, once the engine is spinning fast enough to provide an adequate supply of compressed air to the burners, fuel is injected into the engine and ignited to create the rapidly expanding flow of hot air that is required to spin the turbines and continue "spooling up" to operating speed.
Marilene Originally Answered: From where does a jet engine gets its initial compressed air?
So many incorrect answers. Most planes use free and efficient way to spin up the turbine by using compressed gases collected in the septic tanks of the lavatories. Since quite a bit of pressure can build up in there, they can be effectively used to start up the engines. Where do you think the gases from hundreds of passengers go....yes, to start the engines.

Krissy Krissy
Given: mass, m = 0.059 kg top,h = a million.9 meter Spring consistent, ok = 13 N/m Sol'n: rigidity, F = kx This rigidity is with the help of energies being relese unto to the spring. ability ability, PE = mgh PE = 0.059* 9.80 one*a million.9 PE = a million.a million Joules Kinetic ability, KE = 0.5mV^2 V-V0 = gt V0 = 0, preliminary unfastened fall speed. V = 9.80 one t discover t, the full time travelled of the falling mass. y = V0t -0.5gt^2 y =-h, because of the fact under the reference factor. -a million.9 = -0.5(9.80 one)t^2 t = 0.sixty two sec So the suited velovity, V earlier it hits the spring is. V = 9.80 one (0.sixty two) V = 6.a million meter/sec So, KE = 0.5(0.059)(6.a million)^2 KE = a million.a million Joules PE + KE = F*d -----this is the artwork a million.a million + a million.a million = F*d d = x, the spring compression distance. F = kx So, 2.2 = (kx)*x x^2 = 2.2/ok x^2 = 2.2/13 x = 0.411 meter ----this is the gap of spring compression because of the falling mass.
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Krissy Originally Answered: How do you build a car without using chemical reactions, electricity, or compressed gas?
ask fred flinstone. jk what energy source are you allowed to use? fire!! solar? or a bicycle-type of vehicle. since no one has invented a perpetual motion machine yet, you will have to power it with something. ?? sorry OK,,, QUESTION: how big is this car? is it a toy, or are people supposed to ride in it? do they mean "build" w/out that stuff....or "operate the car" without that stuff? if it is a toy....you could go to a hobby store and research what they have available, then build it yourself. if you use rubber bands, you would need to attach both ends to the frame along the axle, and attach the center of the bands to the center of the axle, so when you roll the car backwards a few revolutions, it will want to un-roll and push the car forward. that, i think, would be considered "potential energy" in physics. hope that helps

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