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Calculate momenta before collision of the objects with masses m1=10g and m2=20g, moving with speeds v1=2m/s and v2=7m/s.
Calculate momenta after collison, is the new velocities are v1' = 1m/s and v2' = 7m/s.
Suppose you wish to make a solenoid whose self-inductance is 1.6 mH. How many turns of wire are needed
A semicircle of radius a is in the first and second quadrants, What is the direction of the net electric field at the origin produced by this distribution of charge (+x,-x,+y,-y direction)
In a certain laboratory experiment a steel ball is released from rest near the top of a 30 incline ramp from vertical height h above the end of the ramp. Determine the magnitude of the linear velocity of the center mass of the sphere at the bottom ..
Two people hear a tornado siren, What is the intensity level (in dB) at the farther listener relative to the other listener
A straight wire in a magnetic field experiences a force of 0.029 N when the current in the wire is 2.5 A. What is the new current
For the two conducting balls as described in problem 1, when one ball is attached to a torsion balance the wire is twisted by a torsional angle of 1°. find the torsion constant of the wire
A 3.50-kg ball, moving to the right at a velocity of +2.72 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
The woman then starts walking clockwise around the rim at .75 rad/s. in what direction and with what angular speed does the turntable rotate.
A nuclear power plant generates 3000 MW of energy from nuclear reactions in reactor%u2019s core. What is the maximum thermal efficiency of the power plant
A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, When does the second fragment reach the ground
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.55 106 N/m, What was the speed of the car before impact
Heather and Matthew walk eastward with the speed of 0.99 m/s east. If it takes them 37 minutes to walk to the store, how far have they walked? Reply in units of km.
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