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A fighter jet is launched from an aircraft carrier with the aidof its own engines and a steam-powered catapult. The thrust of itsengines is 3.90 x 105 N. In being launched from rest itmoves through a distance of 72.8 m and has a kinetic energy of 6.03x 107 J at lift-off. What is the work done on the jet by the catapult?
The electric field everywhere on the surface of a charged sphere of radius 0.190 m has a magnitude of 585 N/C, What is the net charge on the sphere
A 61.0kg skater moving initially at 3.78m/s on rough horizontal ice comes to rest uniformly in 3.24s due to friction from the ice
A hollow non-conducting spherical shell has inner radius R1 = 8 cm and outer radius R2 = 15 cm. a) Write an equation for the radial electric field in the region r
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
In a Broadway performance, an 65.2-kg actor swings from a 4.50-m-long cable that is horizontal when he starts. What maximum height do they reach after their upward swing
a worker exposure to noise in a given plant is measured as follows during various time periods in an 8-hour shifta.
A stunt man drives a car at a speed of 20 m/s off a 27-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20?. How far from the base of the cliff does the car land
At the factory, a noon whistle is sounding with the frequency of 464 Hz. As a car travelling at 76 km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..
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
A seagull flies with a velocity of 12.5 m/s straight into the wind. (ie.. this the velocity of the gull relative to the wind), Calculate the speed of the wind
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. calculate the final speeds of the particles
The drawing shows a skateboarder moving at 6.78 m/s along a horizontal section of a track that is slanted upward by 51.6 ° above the horizontal at its end, find the maximum height H to which she rises above the end of the track
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