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A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.50 hours. What is the density of the planet? Assume that the planet has a uniform density.
The 150-lb man lies against lies against the cushion for which the coefficient of static friction is 0.5. Determine the resultant normal and frictional forces the cushion exerts on him if, due to rotation about the z axis, he has a constant speed v =..
Evaluate the stability of of Na in the NaCl structure
A fly wheel turns through 30 rev(1 rev=2pie rad) as its slows from an angular speed of 6 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
Two very small spheres, each with a mass m = 1.5 g, are suspended from a common axis by insulating threads of length L= 6.0 cm, What is the magnitude of the unknown charge q
A block of mass 1 kg is on a turntable 0.5 m from the center of the turntable. Find the angular speed of the turntable as a function of time
An athlete does the 100 m dash. If observers on a spaceship moving with a speed of 0.741c relative to Earth see the athlete's run, find the time that was recorded on Earth
A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal. How much work is done by the gravitational force
Two ice skaters, Daniel (mass 70.0 ) and Rebecca (mass 45.0 ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
What is Neptune's semimajor axis of the transfer orbit if the semimajor axis is 4497.1*10^6 and the mass of Neptune over the Earth is 17 and the eccentricity of 0.01?
Tension is maintained in a string. The observed wave speed is 25 m/s when the suspended mass is 3.0 kg. (a) What is the mass per unit length of the string? (b) What is the wave speed when the suspended mass is 1.7 kg?
Consider two particles, each with a charge of +Q located at the opposite corners of a square of side d. What is the direction of the net electrical field at point P
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