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Two bumper cars moving on a frictionless surface collide elastically. The first bumper car is moving to the right with a speed of 20.4 m/s and rear-ends the second bumper car, which is also moving to the right but with a speed of 9.16 m/s. What is the speed of the first bumper car after the collision? The mass of the first bumper car is 193 kg, and the mass of the second bumper car is 143 kg. Assume that the collision takes place in one dimension.
A 38.00 kg girl is bouncing on a trampoline. All throughout a certain interval after she leaves the surface of trampoline, her kinetic energy decreases to 185J from 425J. How high does she rise all through this interval? Avoid air resistance.
How far should you place the lens from the slide. Express the direction as an angle with respect to the +x axis.
A circular surface with a radius of 0.062 m is exposed to a uniform external electric field of magnitude 1.55 104 N/C, What is the angle between the direction of the electric field and the normal to the surface
A parachutist descending at the speed of 25 m/s loses a shoe at an altitude of 50 m. (Assume the positive direction is upward.)
Albert pushes a 6-kg box across a level floor. He pushes with a force of 43 newtons, and observes that the box accelerates in the direction of his push, What must be the net force acting on the box
A stationary block of mass M - m is struck by a bullet of mass m traveling at speed v0. During the impact, obtain the speed of the block
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. What is the speed of the electron when it exits the hole in the plate
The atomic planes in a crysral are spaced d = 0.50 nm apart. These planes are used in a diffraction experiment with X-rays with ? = 0.05 nm. What are the diffraction angles for the first three bright fringes
The automobile afterwards undergoes a uniform acceleration of -4 m/s2 because of a red light and comes to rest. It remains at rest for 54.6s and next accelerates back to a speed of 25.6m/s at a rate of 2.85m/s2.
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
A frictionless pulley has the shape of a uniform solid disk of mass 2.1 and radius 10. A 1.10 stone is attached to a very light wire that is wrapped around rim of pulley and the system is released from rest.
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