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A spacecraft consists of a 32500 kg engine and a 12600 kg nosecone. The rocket is initially traveling at 22000 m/s when the engine and nosecone separate. After the separation, the engine is moving at 18900 m/s. How fast is the nosecone moving?
A 73kg human sprinter can accelerate from rest to 12m/s in 3.2s . During the same interval, a 31kggreyhound can accelerate from rest to 19m/s. Compute the average power output for each
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. find how fast does the hanging mass rise
A merry-go-round starts from rest and accelerates uniformly over 16.5 s to a final angular velocity of 7.65 rev/min. Find the person's tangential acceleration
Hair dryer draws a current of 9.2a. How long does it take 1.9*10^3 C of charge pass through? How many electrons does this represent.
A mass m = 4.5 kg hangs on the end of a massless rope L = 2.01 m long. The pendulum is held horizontal and released from rest. What is the magnitude of the tension in the string at the bottom of the path
Two charged spheres are 8.45cm apart. They are moved, and the force on each of them is found to have been tripled. How far apart are they now.
A steel ruler is calibrated to read true at 21.4 °C. A draftsman uses the ruler at 37.6 °C to draw a line on a 37.6 °C copper plate. To what temperature should the plate be cooled
The lines in a grating are uniformly spaced at 1520nm. Analyse the angular separation of the second order bright fringes between light of wavelength 603nm and 615.4 nm. Reply in units of mrad.
A 75 kg bobsled is pushed along a horizontal surface by two athletes. After 4.5 m from rest, the bobsled has a speed of 6.0 m/s. How much force did the two athletes push with
Calculate the maximum KE of electrons emitted from a photo surface of work function 3.2 ev for the incident radiation of wavelength 300 nm
A pendulum bob of mass m is attached to a massless string of length L. If the bob is released from rest at a horizontal position, What is the tangential acceleration of the bob
In order to fabricate a uniform wire of resistance 1.2 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the diameter of the wire
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