Elastic Definition and 1000 Threads

Perhaps this question is silly, but I don't entirely understand how elastic scattering of photons is even possible given that the directions of the incident/scattered photon differ. If there is a change in direction of the photons momentum, then there must be some momentum transferred to the...

Homework Statement When two balls are dropped like shown in situation 1 in the figure, the top ball shoots up after the impact, while the bottom ball loses some of its mechanical energy, as seen in situation 3. By simplifying the situation, we can assume that the bottom ball stops and...

Hey guys, we have ordered some spring rings made out of Inconel 718. For some reason the company didn't finish the heat treat and the parts are just annealed, in the "dead-soft" condition. I need to evaluate if these things are usable (they are actually supposed to be soft and were designed...

Homework Statement Ok so I have two objects of different masses {m}_{{1}} for the projectile and {m}_{{2}} for the spinning top. The projectile has only translational kinetic energy in the direction of the arrow (see attached image), with {v}_{{1}} and {v}_{{2}} as initial and final linear...

[b]A steel alloy specimen having a rectangular cross section of dimensions 18.8 mm × 3.2 mm (0.7402 in. × 0.1260 in.) has the stress-strain behavior shown in the Figure. If this specimen is subjected to a tensile force of 108900 N (24480 lbf) then (a) Determine the amount of elastic strain...

Came across this one in my freshman physics book: A particle of mass 1m is traveling along the x-axis at velocity V1. It collides elastically with a second particle of mass 3m traveling at velocity V2. The first particle (1m) moves off at 0.92m/s at 48º to the x-axic. The second particle (3m)...

Homework Statement A Pendulum weighs .5kg and has a string length of 70cm swings from a horizontal position downwards to hit a block that weighs 2.5 kg and is on a frictionless plain. Calculate the speed of both the ball and the block after the elastic collision. Homework Equations...

1/2m1v1,o=1/2m1v1f^2 +1/2m2v2f^2 and m1v1,0= m1v1f + m2v2f any idea on how to solve for m1v1f and m2v2f

Homework Statement A 2.00 kg block is at rest at the top of a frictionless inclined plane. The block is...

Why is the angle between products in non head on, perfectly elastic collisions always 90 degrees?

what formula/s should i use in this problem: 2 identical bodies move forward each other. One has a velocity of 4 m/s and the other has a velocity of 6 m/s assuming a perfeclty elastic collision. Find their velocities after collision pls help me p. elastic col is not included in...

Can someone please 'stupify' the definitions of an elastic and inelastic collision? Do objects bouncing off of each other undergo elastic collisions, while objects which stick together undergo completely inelastic collisions? This concept is very confusing to me :S thank you!

I don't usually ask questions here, but I've been stuck for a v-e-r-y long time on this problem. It goes like this: A ball is dropped 1 meter above a tray connected to a spring. This is what it looks like: O |____| >< <> >< <>Mass of ball - 1kg Mass of tray - 5kg Spring - K = 100...

ok so, i have an assignment due tomorrow, i know, late starting, but i can't figure out how to rearange the kinetic energy and momentum equation to get the v1f and v2f i know that you have to find one term in the for of the other, but i don't know how to rearange my equation so that i have...

hi, How do we differentiate between quasi elastic scattering and non elastic scattering? Was told that dynamic light scattering falls under the quasi elastic scattering... but it seems to me that light undergoing such scattering have its frequency shifted... this seems to me to be that...

Homework Statement In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 18 cm, the ball travels horizontally 5.2 m and lands on the floor 1.5 m below the point at which it left the spring. Homework Equations Us=...

Hello, The differential equation is question that models an elastic string is: \frac {\partial^2 u}{\partial t^2} - \frac{\partial}{\partial x}\left( p(x) \frac{\partial u}{\partial x}\right)= 0 Taking u(x,t) = e^{-i\lambda t} y(x) I simplify above diff.eqn. to: \lambda^2 y(x) +...

When two equal masses collide without having any rotational velocity before the collision, and they do attain some rotational velocity after the collision, then do we subtract the rotational momentum from the linear momentum which is given by the known equations, or is the rotational momentum...

Homework Statement An elastic object (F = k e) is thrown horizontally at a wall, so it is traveling at constant velocity, which then rebounds elastically (energy conserved). I'm only interested in when the object first makes contact and decelerates to 0ms-1 which will be when the object is...

"elastic off-center central collisions" (?) Hi, I'm new to the forums and, to a large extent, to physics in general. Anyway, I've been interested in the dynamics of simple collisions of spherical particles in 2D and 3D space. I've been searching for information on the collisions of this...

Elastic collision. I cannot find the after collision velocities (quantity and direction), when 2 spheres strike an immobile sphere. All three of them have the same shape and volume, and the same mass (say e.g. 1 kg each). The two moving ones move parallel to each other with the same velocity u...

Homework Statement 10. A red convertible of momentum mv traveling north on the Murdoch Drive collides, at the intersection of Murdoch Dr and South St, with a green sedan having the same magnitude of momentum, but traveling west on South St. a. What is the magnitude and direction of the...

Homework Statement hi everyone ,, how are you all ? ,, i have these two equations and i don't know how to get them : v1f=((m1-m2)/(m1+m2))*v1i +(2m2/(m1+m2))*v2i V2f=((2m1/m1+m2))*v1i+((m2-m1)/(m1+m2))*v2i Homework Equations m1v1i+m2v2i=m1v1f+m2v2f (conservation of momentum)...

1. Homework Statement The problem is in the picture(attached) 2. Homework Equations I know we have to use m1v1 + m2v2 = m1v1' + m2v2' (1/2)m1v1^2 + (1/2)m2v2^2 = (1/2)m1v1'^2 + (1/2)m2v2'^2 3. The Attempt at a Solution All I know is that it needs to be split up into components...

Homework Statement The problem states: A 0.140 kg block on a frictionless table is firmly attached to one end of a spring with k = 25 N/m. The other end of the spring is anchored to the wall. A 0.023 kg ball is thrown horizontally toward the block with a speed of 5.2 m/s. What is the ball's...

Homework Statement A 1 Kilogram object with speed of 2.0 m/s in the positive x direction has a head -on elastic collision with a stationary 0.70Kg object located at x=0. What acceleration does the stationary object experiences during the collision if the collision occurs over 0.2 seconds...

Homework Statement A block of mass m1= 5kg is released from point 1 which is 5 meters above the horizontal frictionless surface and slides down a frictionless track. It makes a head-on collision at point 2 with a block of mass m2= 10kg that is initially at rest. Calculate the maximum...

Hello, Homework Statement I wondered if someone could help me show / give hints on how to show the (simplified) elastic differential equation (below) is related to the classical Schrodinger equation (in quantum mechanics)? I am a maths undergraduate. 2. Homework Equations - (i had some...

Homework Statement A 70.0 kg person steps through the window of a burning building and drops to a rescue net held 8.00 m below. If the surface of the net is 1.40 m above the ground, what must be the value of the spring constant for the net so that the person just touches the ground when the...

Homework Statement A wire of diameter 0.2mm stretches by 0.20% when a 6.28-N force is applied. What is the elastic modulus of the wire? Homework Equations Elastic Modulus=F/A/L/\DeltaL The Attempt at a Solution r=.1mm=1x10-4m 6.28N/(2\pi1x10-8/.02=5x109N/m2 The right answer...

elastic collision help! Homework Statement A spherical satellite of radius 4.7 m and mass M = 195 kg is originally moving with velocity v1i = < 2800, 0, 0 > m/s, and is originally rotating with an angular speed w = 2 radians/second, in the direction shown in the diagram. A small piece of...

Homework Statement A 1.2kg mass moving 2.4m/s [East] has an elastic collision with a 2.4kg mass moving 1.8m/s [North]. What are the final velocities? ------------------------------------- I know that I need Ek before and after the collision, but I'm not sure how to calculate it for this...

If two cars are going towards each other, collide, and then are separated (have separate masses and separate velocities)... that is an elastic collision, correct?

What could you do to obtain a more precise measure of the elastic modulus of a material in tensile testing?

1. Homework Statement [/b] Block 1, with mass m1 and speed 3.6 m/s, slides along an x-axis on a frictionless floor and then undergoes a one-dimensional elastic collision with stationary block 2, with mass m2 = 0.69m1. The two blocks then slide into a region where the coefficient of kinetic...

Homework Statement A particle of mass M1 collides elastically with a particle of mass M2 at rest. Show that if M1>M2 then the angle of M1 after the collision cannot exceed the value arcsin(M2/M1). Homework Equations conservation of momentum: M1v1=M1v1`+M2v2` conservation of kinetic...

Where i can find complete data for material elastic constants?? I need elastic constants, piezoelectric coefficients & permittivity for different semiconductor alloy? Someone could kindly help...

An object with mass 3.6 kg is moving in the positive x direction when it strikea second object head-on. THe collision is elastic and afterwards both objects are moving in the positive x direction. If the final speed of the second object is equal to 8 times the final speed of the first object...

I have read that when a gas atom or molecule collides with the wall of a container that the collision is completely elastic, and that the gas particle has the same energy after the collision as it did before the collision. I don't understand how it could transfer pressure to the container wall...

Homework Statement a) State the law of conservation of linear momentum. b) A proton of mass 1.6*10-27kg traveling with a velocity of 3*107ms-1 collides with a nucleus of an oxygen atom of mass 2.56*10-26kg (which may be assumed to be at rest initially) and rebounds in a direction at 90 degrees...

In this problem we will examine the collision between a baseball (the cowhide) and a bat (the ash). We assume a one-dimensional problem. That is, the bat hits the ball squarely, so that the ball reverses its direction after the collision. We also assume that the ball hits the bat at the center...

Homework Statement A hockey puck B rests on a smooth surface of ice and is struck by a second puck A , which was originally traveling at 40.0 m/s and which is deflected 30.0 degrees from its original direction. Puck B acquires a velocity at a 45.0 degree angle to the original direction of A...

Homework Statement Homework Equations MaVa+MbVb=MaV'a+MbV'b PE=mgh KE=.5mv^2 mgh=.5mv^2=KE of small ball just before collision The Attempt at a Solution I first determined the starting height of the pendulum using the pythagorean theorem through sin15=y/.95 y=.2459 m...

1. An 8 g rubber bullet was fired into a 2.5 kg pendulum bob, initially at rest, and becomes embedded in it. The pendulum rises a vertical distance of 6.0 cm.Calculate the initial speed and how much kinetic energy is lost in this collision? 2. An 8 g rubber bullet was fired into a 2.5 kg...

Hi there. I have a bead of mass m, which slides down a frictionless parabolic wire in the form y=x^2, and is attached by elastic to the point (0,h), and I want to write down total energy f(x) (= elastic energy + gravitational potential energy) (no mention of kinetic energy...) of the bead at...

Homework Statement Q: Consider two identical particles A and B have the same mass m in the inertial frame R where B is at rest. The two particles collide and their trajectories after impact are symmetrical with respect to the incident direction. Let t be the angle between the trajectories...

Homework Statement Two elastic balls, one with mass m = 50 g and the other with mass M = 3m experience a head-on elastic collision after initially traveling in opposite directions at the same speed v = 15 m/s. Use the conservation of momentum strategy to obtain symbolic expressions and...

Homework Statement The deepest point in any ocean is in the Mariana Trench, which is about 11 km deep, in the Pacific. The pressure at this depth is huge, about 1.13 108 N/m2. (Take the bulk modulus of seawater to be 2.34 109 N/m2) (a) Calculate the change in volume of 1.2 m3 of seawater...

Homework Statement How do i prove 0.5kx2=elastic energy? Homework Equations 0.5kx2=elastic energy Energy in= Energy out The Attempt at a Solution I understand how to use the formula but what i don't understand is where the formula comes from. I am guessing it has to do with Fx=Kx...

Homework Statement A 6 gram ball moving north at a rate of 3 m/s collides head on with an identical ball moving south at 2.0 m/s. The collision is elastic and the first ball moves south at 1 m/s. What is the velocity of the second ball? Homework Equations Law of conservation of...