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A 20 kg satellite has a circular orbit with a period of 2.3 h and a radius of 6.5 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.6 m/s2, what is the radius of the planet?
A football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player
At some instant and location the electric field associated with an electromagnetic wave in vacuum has the strength 86.9 V/m. Find the magnetic field strength
Light wavelenght 590nm fall on a double slit, and the first bright fringe of the interference pattern is seen at an agle of 13 from the central maximum
A jet with mass m = 1.3 × 105 kg jet accelerates down the runway for takeoff at 2.4 m/s2, What is the net vertical force on the airplane as it levels off
A man looks at himself in a concave shaving mirror whose radius of curvature is 48 inches. What is the image's magnification
A small plane tows a glider at constant speed and altitude. If the plane does 2.09 105 J of work to tow the glider 130m, what is the angle between the two rope and the horizontal
As they go around, they experience a centripetal acceleration of 2.20 . What is the diameter of this particular Ferris wheel
Using the Bohr model, calculate the speed of the electron in a hydrogen atom in the n=1,2, and 3 levels. Calculate the orbital period in each of these levels
A ball is thrown horizontally from the top of a 85 m building and lands 140 m from the base of the building. What is the vertical component of the velocity just before the ball hits the ground in m/s
Light from a helium-neon laser (lamda=633nm) is incident on a single slit. What is the largest slit width
a branch is wedged under a rock and rests on a small object. the small object is 1.5 m from the large rock and the branch is 11.0 m long. what force must be exerted on the smaller rock
A piece of string wraps around a cylinder 8 times. The length of the string is 14 cm. calculate the circumference of the cylinder.
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