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A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines to full throtle. After 2 km, the jet is moving with a speed of 400 m/sec.
a) What is the acceleration of the jet?
b) How many "g's" does the pilot feel while moving in the forward direction during the acceleration?
Snow skier is racing down a 50-degree slope. If there is no friction between the skis and the snow. What is the component of the acceleration of gravity
A block of mass M = 0.8 kg hangs at the end of a massless spring. What is the new equilibrium extension of the spring
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What are the jets and the nozzles and how are they works and what their applications?
a sphere of radius r starts from rest and rolls without slipping along a curved surface dropping through a vertical
A 9.0 V battery is connected across two large parallel plates that are separated by 4.5 mm of air, creating a potential difference of 9.0 V between the plates. What is the electric field in the region between the plates
By what percentage did the Dow drop that day? This was the second-biggest one-day percentage drop ever.
A cycle receives 500 Btu of heat at 1000°F and rejects 200 Btu of heat at 200°F. There is work input of 275 Btu and work output of 575 Btu. Compute the cycle efficiency
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
When a 58-g tennis ball is served, it accelerates from rest to a speed of 44 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 38 cm. What is the magnitude of the net force acting on the ball?
Determine the least value of n for which there is total internal reflection on the vertical surface.
An object is placed 10 m before a convex lens with focal length 5.3 m . Another convex lens is placed 6.84 m behind the first lens with a focal length 6.2 m. At what distance is the second image from the second lens?
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