Results 21 to 30 of about 197,944 (293)
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Novello, M., Bergliaffa, S. E. Perez
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Investigation into the Trampoline Dynamic Characteristics and Analysis of Double Bounce Vibrations
Double bounce is an unusual and potentially very hazardous phenomenon that most trampoline users may have experienced, yet few would have really understood how and why it occurs.
David Eager +5 more
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Repellent materials are known for their ability to make impacting water recoil and takeoff, which keeps them dry after rain.
Jha, Aditya +3 more
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The Effect of the Width of an Aluminum Plate on a Bouncing Steel Ball [PDF]
The effect of the distance between clamping supports of an aluminum alloy plate on the coefficient of restitution of a bouncing steel ball was investigated. The plate was supported on two wooden blocks with a meter stick secured on either side.
Christine Hathaway, Hanh Nguyen
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Finite element modelling and experimental study of oblique soccer ball bounce [PDF]
In this study, we develop a finite element model to examine the oblique soccer ball bounce. A careful simulation of the interaction between the ball membrane and air pressure in the ball makes the model more realistic than analytical models, and helps us
Degrieck, Joris +3 more
core +1 more source
By demanding that a bounce is nonsingular and that perturbations are well-behaved at all times, we narrow the scope of possible models with one degree of freedom that can describe a bounce in the absence of spatial curvature. We compute the general properties of the transfer matrix of perturbations through the bounce, and show that spectral distortions
Abramo, L. Raul, Peter, Patrick
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Two classical scalar fields are minimally coupled to gravity in the Kachru-Shulz-Silverstein scenario with a rolling fifth radius. A Tolman wormhole solution is found for a R x S^3 brane with Lorentz metric and for a R x AdS_3 brane with positive definite metric.
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Spectrum of Cuscuton bounce [PDF]
Abstract It has been recently shown that a cosmological bounce model based on Cuscuton gravity does not have any ghosts or curvature instabilities. We explore whether Cuscuton bounce can provide an alternative to inflation for generating near scale-invariant scalar perturbations.
Kim, J. Leo, Geshnizjani, Ghazal
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Spin Rate of a Racquetball Due To Angular Impact [PDF]
The relationship between the impact angle of a racquetball and the resulting angular velocity of the ball was investigated. Impact angles ranging from 0° to 80° were tested.
Dolev Illouz
doaj
9 pages, 1 figure, revtex, accepted for publication in Phys.
Shtanov, Yuri, Sahni, Varun
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