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A plane flying horizontally at a speed of 50.0 m/s and at an elevation of 160 m drops a package. Two seconds later it drops a second package. How far apart will the two packages land on the ground?
A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, what is the mass of the landing craft
child whose mass is 30 kg sits on a merry-go-round at a distance of 2 m from the center. What is the magnitude of the net force (in Newton) acting on the child?
Three forces acting on an object are given by f1 = (?2.05i + 6.30j) N, f2 = (4.70i ? 1.95j) N, and f3 = (?42.5) N. What is the direction of the acceleration
a 125 lb person falls from height of 10 ft. he bends his legs so that he comes to a stop over a distance of 2 ft, What is the avg. force that his legs have to exert to stop him
A monoenergetic beam of electrons in incident on a single slit of width 1.05 nm. A diffraction pattern is formed on a screen 20 cm from the slit. what is the energy of the incident electrons
Sam is taking his girlfriend Sally out for a ride in his boat. He starts out at rest. He accelerates with an acceleration of 0.168 m/s^2 for 85.6 s. What is the total time the boat moves
An artificial satellite circling the Earth completes each orbit in115minutes. (The radius of the Earth is6.38106m. What is the value ofgat the location of this satellite
A 0.250 kg block is placed on a vertical spring (k = 5.0 x 10^3 N/m) and pushed downward, compressing the spring 0.10 m. As the block is free, it leaves the spring and continues to travel upward. What height above the point of release would the bl..
A bug that has a mass mb = 3 g walks from the center to the edge of a disk that is freely turning at 20 rpm. The disk has a mass of md = 13 g. what is the new rate of spinning in rpm
A 10-uF, a 20-uF, and a 50-uF capacitor are connected in series across a 160 volt source. What value of charge is on each capcitor
A mass m=4.8kg hangs on the end of a massless rope L=1.92m long. The pendulum is held horizontal and released from rest. what is the maximum mass that can be used
a soccer ball is kicked simultaneously by bryan and anthony. bryon kicks with 700 N force to the west while anthony kicks with 800 N force to the north. calculate the net force acting on the ball
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