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Ball 1, with a mass of 150 g and traveling at 11 m/s, collides head on with ball 2, which has a mass of 300 g and is initially at rest.
A. What are the final velocities of each ball if the collision is perfectly elastic?
B. What are the final velocities of each ball if the collision is perfectly inelastic?
It has been found that, on average, galaxies are moving away from Earth at a speed that is proportional to their distance from Earth. What is the expected recessional speed of a galaxy 4.80 1022 m from Earth
The sound level measured 5.2 m away from a jet engine is 140 dB. What is the intensity of the sound at 5.2 m? What is the power transmitted by the sound waves? At what distance is the sound level exactly half?
A goldfish bowl is spherical, 8 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside
A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration a = (4.40 m/s2)i + (7.00 m/s2)j. At time t = 0, the velocity is (4.2 m/s)i. What are magnitude and angle of its velocity when it has been displaced by 11.7 m..
describe how an electric current is generated and transported. assess the current state of our national grid in the
The electric motor of a model train accelerates the train from rest to 0.720 m/s in 27.0 ms. Find the average power delivered to the train during its acceleration
Item 4 To start her lawn mower, Julie pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its central axis of I = 0.660Kg(metersquared) and a radius of 6.00cm . There is an equivalent frictional torque impedin..
At the local grocery store, you push a 14.7-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 12.0 N, you now accelerate the cart from rest through a distance of 2.14 m in 3.00 s. What was the mass of the ..
Consider a deformed nucleus (shape of an ellipsoid, long axis 10% longer than short axis). If you compute the electric potential at the first Bohr radius, what accuracy can you expect if you treat the nucleus as a point charge? Make reasonable es..
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.77x1011 m apart. The larger of the two stars has a mass of 3.63x1030 kg, and its center is 2.03x1011 m from the system's center of mass. What is the ma..
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1200 N/C and points at an angle ?1 = 35o above the +x axis. Find the magnitude and direction of the total field
The charge is now taken out from the spherical shell and placed outside it at a distance 25cm from the center of the sphere. Calculate the electric field at the center of the spherical shell
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