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Question: A balloon is directly west of two observing stations 10 km apart. The angles of elevation of the balloon from the two stations are 17 degrees and 78 degrees. How high is the balloon?
a rock is tossed off the top of a cliff of height 34.8 m. Its initial speed is 29.1 m/s, and the launch angle is 29.8 degrees with respect to the horizontal
A large wooden turntable in the shape of a flat disk has a radius of 2.05m and a total mass of 130kg. Find the angular speed of the turntable after the parachutist lands
A 25 kg cannon shell is subjected to a constant acceleration of 1200 g while in the cannon barrel. What force is the burning propellant exerting on the shell
A Federation starship ( 2.10×106kgkg ) uses its tractor beam to pull a shuttlecraft ( 2.10×104kgkg ) aboard from a distance of 15.0kmkm away. The tractor beam exerts a constant force of 4.0×104N4.0 \times 10^{4}\;{\rm N} on the shuttlecraft. Both spa..
Calculate the acceleration of the system and the tension(s) in the rope. Given m2 = 5Kg, with the friction coefficient of uK =0.4 and uS = 0.5 with the table, wieght m1 = 10Kg and angle = 40 degrees. Draw free body diagram.
A car travels for 33.1 km south, then west for 9.4 km, and, finally, 7.5 km in a direction 73.5 deg; east of north. Find the magnitude (in m) of the car's total displacement
A 1.03 kg mass is attached to a spring of force constant 11.0 N/cm and placed on a frictionless surface. By how much will the spring stretch
A constant net force of 75N acts on an object initially at rest as it moves through a parallel distance of 0.60m. What is the final kinetic energy of the object
A 1200 kg car pulls a 480 kg trailer. The car exerts a horizontal force of 3540 N against the ground in order to accelerate. What force does the car exert on the trailer
What is the average angular velocity of the Earth around the sun, Assume a circular counterclockwise orbit, and 365 days in a year
What is the maximum bandwidth of the amplifier
Swimmer stroiking along at 2.2 m/s ceases all body movement. Uniformly comes to a dead stop after 10m. How far swimmer moved during her 3rd second of unpowered drift
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