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A rocket, which has a rest mass of 235,000 kg, including186,000 kg of fuel is sitting "at rest" in space. When this fuel is burned iti is exhausted from the rocket witha velocity of 38,500 m/s.
For simplicity assume that all the fuel is emitted atonce! What will be the velocity the final velocity of the rocket.
A turntable that spins at a constant 80 rpm takes 3.70s to reach this angular speed after it is turned on. Find its angular acceleration (in rad/s^{2}), suppose it to be constant, and the number of degrees it turns through while speeding up.
Two loudspeakers on a concert stage are vibrating in phase. A listener is 57m from the left speaker and 30m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz.
Dimitri walks 27.66 m due north, 40.58 m due east, and then 17.98 m due south. What is the magnitude of his displacement
Two neutrons are in an infinite square well with L=2.0 fm. What is the minimum total energy that the system can have? (Neutrons, like electrons, have antisymmetric wave functions. Ignore spin.)
A pendulum of Length L= 42.1cm and mass m=169g is released from rest when the cord makes an angle of 65.4 degrees with the vertical
what is the rate of heat loss through a glass window 3.0 mm thick if the outside temperature is -20 degrees c and the
A 2.0-kg block slides along a rough horizontal surface. A force(P=6.0N) is applied to the block at a 30degree angle. find the magnitude of the force of friction acting on block
The fan blades on a jet engine make one thousand revolutions in a time of 81.8 ms. What is the angular frequency of the blades
How to find out the magnitude of the acceleration
One particle has a mass of 2.00 10-3 kg and a charge of +9 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. The two particles are initially held in place and then released. The particles fly apart, and when the separation between..
A rotating wheel requires 9.00 s to rotate 26.0 revolutions. Its angular velocity at the end of the 9.00-s interval is 95.0 rad/s. What is the constant angular acceleration
An object of mass 50.5 g is initially placed in boiling water so that it is at 101° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
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