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A 4.2 kilogram ball with a velocity of 4.2 m/s in the +x-direction collides head-on elastically with a stationary 2.0 kilogram ball. Evaluate the speed of the second ball after the collision?
question a plane is headed eastward at a speed of 156 ms. a 20.0 ms wind is blowing southward at the same time as the
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.137 liters per second, At what speed does the water exit the nozzle
The coil of a galvanometer has a resistance of 21.6 ?, and its meter deflects full scale when a current of 5.58 mA passes through it. What is the maximum current that this ammeter can read
Calculate the average kinetic energy and the average potential energy for the 2nd excited state of a harmonic oscilator. use expectation values to calculate a quantum mechanical average, show integrations.
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0398 s, compute the vertical components of the launch velocity
q1. sea launch mission planners are going to launch their russian launch vehicle from a lo 3 degrees into leo with an
A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0g steel wire. What is the mass of the sculpture
In an electroplating process, it is desired to deposit 40mg of silver on a metal part by using a current of 2.0A. How long must the current be allowed to run to deposit this much silver?
a person is to be fitted with bifocals. she can see clearly when the object is between 30 cm and 1.5 m from the eye.
q1. on a workday the average decibel level of the busy street is 82 db with 100 cars passing a given point every
a heat engine operating between a hot reservoir at 500c and a cold reservoir at 0c is 65 as efficient as a carnot
Consider an RC circuit with R = 3.10k? , C = 1.40?F . The rms applied voltage is 240V at 60.0Hz. compute the phase angle between voltage and current
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