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Object A, which has a mass m and a velocity v0, collides head-on with object B, which has a mass 2m and a velocity 1/2v0. Following the collision, object B has a velocity of 1/4v0. (a) Determine the velocity of object A after the collision. v = ? If not, express the change in the kinetic energy in terms of m and v0. (Enter 0 if the collision is elastic.) ?E = ?
Conservation of energy tells us that energy cannot be created or destroyed. Clearly energy is required for radioactivity to occur. a. Where exactly is this energy coming from? b. How could the age of this fragment be determined?
Two point charges q = 63.0 nC and q = -63.0 nC are in vacuum located on the x axis at -46.0 cm and 46.0 cm, calculate the total electric flux through the y-z plane
A bug of mass 1.0 grams is caught up in the center of an oscillating spider web. show that this motion is generated by hooke's law force, f=-kx
A 1850-kg car experiences a combined force of air resistance, At what angle is the hill inclined above the horizontal
A spaceship of proper length 308 m takes 0.76 µs to pass an Earth observer. Determine the speed of this spaceship as measured
Find an expression for the loop's velocity as a function of time as it enters the magnetic field. You can ignore gravity, and you can assume that the back edge of the loop has not entered the field
Two parallel wires of length 17 m are separated by a distance of a = 0.13 cm, What is the magnetic force on each wire
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
An airplane travels a distance 270 m down the runway before taking off. If it starts from rest, moves with a constant acceleration, what is its speed when it takes off
Precisely 1.10 after the speeder passes, the policeman steps on the accelerator. If the police car's acceleration is 2.10 m/s2, Explain how much time elapses after the police car is passed until it overtakes the speeder
A uniform thin rod of length 0.40 m and mass 3.0 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
A uniform beam of mass M and length L is pinned to the wall and supported in equilibrium by a thin cable attached a distance d from the free end of the beam. Calculate the force exerted by the pin on the beam in vector form
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