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A 28000 kg rocket has a rocket motor that generates 309200 N of thrust.
What is the rocket's initial upward acceleration?
At an altitude of 4580 m the rocket's acceleration has increased to 1.983 m/s2 What mass of fuel has it burned?
One of the 61.0cm -long strings of an ordinary guitar is tuned to produce the note B3 (frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
Light of a particular wavelength shines on a single slit of width 1.150e-4 m, creating a diffraction pattern with the first dark fringe at an angle of 0.224° from the centerline. What is the distance between the centers of the two slits
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on the ground
Setting a world record in a 100m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.0 s. Accelerating uniformly, Maggie took 2.0 s and Judy 2.5 s to attain maximum speed that they maintained for the rest of race.
a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. find the initial height of the ball
A woman walk up a flight of stairs. The gain in her gravitational potential energy is U, and her power output isP. what's her gain in potental energy
A speeder is racing down the road at a constant speed of 90mi/h. A police officer is having coffee while the speeder zips past her. How Far down the road does the officer catch the speeder
An electrically neutral model airplane is flying in a horizontal circle on a 4.0-m guideline, which is nearly parallel to the ground. Find the magnitude of the charges
What is the net upward force on an airplane wing of area 20.0 m2 if the speed of air flow is 221 m/s across the top of the wing and 206 m/s across the bottom
shows a particle with positive charge q = 1.60 x 10-19 C is moving with speed v = 8.43 x 104 m/s toward a long straight wire with current i = 371 mA. find the magnitude of the force on the particle due to the current
an ambulance moving at 42 ms sounds its siren whose frequency is 450hz. a car is moving in the same direction as the
A river 108.0 m wide flows toward the south at 35.6 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. How long does it take her to cross the river
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