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A 15 kg cannon ball is firedfrom a cannon with muzzle speed of 867 m/s at an angle of51.3? withthe horizontal. The acceleration of gravity is9.8m/s2 . Use conservation of mechanical energy to findthe maximum height reached by first ball. Answer in units ofm.
A second identical ball is firedat an angle of 98?. What is the totalmechanical energy at the maximum height of the second ball. Answer in units of J.
Suppose a satellite is in a circular orbit 3.425 Earth radii above the surface of the Earth (4.425 Earth radii from the center of the Earth). By how much does it have to increase its speed
A plane flies at 1.25 times the speed of sound. The sonic boom reaches a man on the ground exactly 1 min after the plane passed directly overhead. What is the altitude of the plane
A 12.0 kg box resting on the horizontal, frictionless surface is attached to a 5.00 kg weight by a thin, light wire that passes without slippage over the frictionless pulley. The pulley has the shape of the uniform solid disk of mass 2.10kg and diame..
consider a 150 ohm and 180 ohm resistor connected in a parallel combination with a 9 volt battery. determine the total resistance of the parallel combination.
What is the difference in blood pressure ({rm mm-Hg}) between the top of the head and bottom of the feet of a 1.80-{rm m}-tall person standing vertically.
A bus accelerates at 1.5 m/s/s from rest for 12s. It then travels at constant speed for 25s, How far did the bus travel
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
an elephant can runat a steady speed of 10m/sec and can stop in 2.5 sec what is the average acceleration of the elephant while stopping
The horizontal acceleration of a projectile
A man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t..
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, What is the compressional strain of the humerus
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 180 N. What is the actual frictional force when the man has climbed 1.0 m along the ladder
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