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You stand on a long flat bed railroad car which you estimate weighs about 4 times your own weight. Initially, the car rolls straight along the ground 20 m/s with negligible friction. You then begin to run across the top of the car opposite its own direction of motion to the ground. You estimate that your speed is about 5m/s relative to the car. What is the resulting increase in the speed of the car?
An electron is suspended at a distance of 1.48 cm above a uniform line of charge. What is the linear charge density of the line of charge
The distance between a node and the nearest antinode of a standing sound wave in air is 8.25 m. obtain the frequency of this wave
An object is located 10 cm in front of a mirror that forms an image of the object on a wall 300 cm, What type of mirror is required to form this image?
You hit a 0.2 kg golf ball up at 40o from the horizontal. It travels for 4.86 s and stops on an elevated green 10 m above its initial height traveling down at an angle of 35.4o below the horizontal
The space shuttle is in a 400km -high circular orbit. It needs to reach a 580km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
a spacecraft drifts through space at a constant velocity. it then turns on a jet that provides a constant force in the
A femur is a bone in the leg whose minimum cross sectional area is about 4.0 x 10^-4 m^2. Find the maximum stress that this bone can withstand
The magnitude of the field produced by a point charge of +5.4 micro-coulombs has a magnitude of 5.9 x 106 N/C, How far is the point from the charge
An electric charge on the x-axis oscillates sinusoidally about the origin. A distant observer is located at a point on the positive z-axis. In what direction will the electric field oscillate at the observer's location
A uniform electric field of 5.4 N/C is set up between two parallel plates such that the electric field is directed vertically downward and the field outside the plates is zero. Determine the vertical acceleration of the electron
A negative charge of -0.535 µC exerts an upward 0.190Nforce on an unknown charge 0.325m directly below it. What is the unknown charge
a golfer imparts a speed of 37.1 ms to a ball and it travels the maximum possible distance before landing on the green.
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