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A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 4.65 x 105 N. In being launched from rest it moves during a distance of 60.3 m and has a kinetic energy of 5.88x 107 J at lift-off. What is the work done on the jet by the catapult?
An automobile with 0.200 m radius tires travels 70,000 km before wearing them out. How many revolutions do the tires make
an asteroid has a mass of 3.66 x 1020 kg and a radius of 8.2 x 105 m. if a 25 kg mass is dropped from 10 m above the
A hockey puck moving at 34m/s slams through a wall of snow 40cm thick. It emerges moving at 17m/s. find the time the puck spends in the snow
A 109-kg horizontal platform is a uniform disk of radius 1.69 m and can rotate about the vertical axis through its center. A 61.5-kg person stands on the platform at a distance of 1.15 m from the center and a 27.5-kg dog sits on the platform near ..
A spherical hydrogen-filled balloon is used to lift a load of 5595 N (in addition to the weight of the hydrogen). Find the minimum necessary radius for the balloon
A 3000 pound car crashes into a concrete jersey barrier moving 3 sections (totaling 12,000 pounds) laterally 24 inches. How fast was the car going on impact.
A centrifuge in a medical laboratory rotates at an angular speed of 2000 rev/ min. Find the constant angular acceleration of the centrifuge
A steel ball of mass m is fastened to a light cord of length Land released when the cord is horizontal. Find the tension in the cord when the ball's height above itslowest position is 1/2 L
Using Newton's Version of Kepler's Third Law II Calculate the orbital period of the Space Shuttle in an orbit 200 above Earth's surface. Express your answer using two significant figures. T= s
A 2.30-MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. Calculate the speed of the fetal heart wall at the instant this measurement is made
A speedboat starts from rest and accelerates at +2.01 m/s2 for 6.95 s. At the end of this time, the boat continues for the additional 5.70 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.20 s.
A block of mass 2.50 kg is pushed 2.20 m along a frictionlesshorizontal table by a constant 16.0 N force directed 25.0 degrees below the horizontal. Determine the work done by the applied force.
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