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Two bumper cars in an amusement park ride collide elastically as one approaches the other directly from the rear. Car A has a mass of 455 kg and car B 505 kg. Car A approaches at 4.50 m/s and car B is moving at 3.70 m/s.
-v'A = 3.66m/s v'B before impact = 4.46m/s
a) Calculate the change in momentum of car A after the collision.
b) Calculate the change in momentum of car B after the collision.
A 20 kg piece of steel pipe that is 20 cm in diameter, 80 cm long, What is its angular velocity and its total kintetic energy
Two identical batteries of emf ε = 5.07 V and internalresistance r = 0.208 Ω are to be connectedto an external resistance R, either in parallel (Fig.27-52) or in series (Fig. 27-53). If R = 0.467Ω, what is the current i (in A) in the external resi..
The nucleus of Be (atomic mass=8) is an unstable isotope of beryllium, and decays into two alpha particles (helium nuclei) via the process 8Be "decays to" 4He+4He. Find the kinetic energy of each of the alpha particles
A block of mass 2.50 kg is pushed 3.00 m along a frictionless horizontal table by a constant 18.0 N force directed 25.0° below the horizontal. Determine the work done by the net force on the block
In the circuit the resistance are 17.0 kΩ and the battery's emf is 22 Volt. If the time constant is measured to be 37.0 μs, Compute the total capacitance of the circle
A spherical cavity of radius 4.00 is at the center of a metalsphere of radius 18.5 . A point charge 6.00 rests at the very center of the cavity, whereas the metal conductor carries no netcharg Determine the electric field at a point 2.00 from the ..
(a) What is their translational velocity immediately thereafter? (b) What fraction of their original kinetic energy is still mechanical energy.
A 116 gram cube of ice at 0°C is dropped into 1.0 kilogram of water that was originally at 82°C. Determine what is the final temperature of the water after the ice has melted
If one observes a very red celestial object, its color can be due to the temperature if being; a cold star or due to the very high speed which it moves away from us. EXPLAIN how spectral lines can be used to conclude one way or the other
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. As a sedan passes by the first cruiser, its speed is measured to be 99.7 mph.
what are the formulas for these questions1. if stiffness of the medium inceases and the time remains unchanged what
A 1.0-kg copper rod rests on 2 horizontal rails 1.0 m apart and carries a current of 50 A from 1 rail to the other.the coefficient of static friction is 0.60.What is the smallest magnetic field (vertical) that would cause the bar to slide with accele..
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