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A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.55 104 m/s, and the radius of the orbit is 5.40 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.80 106 m. What is the orbital speed of the second satellite?
Four particles are held in place at the corners of a square with sides of length L. Each particle has a charge q and mass m. (a) What is the potential energy of the system of charges.
The loaded cab of an elevator has a mass of 3x10^3 kg and moves 177m up the shaft in 23 s at constant speed. At what average rate does the force from cable do work on the cab.
A 60.0 g bullet is fired from a muzzle velocity of 525 m/s from a gun with mass 4.50 kg and a barrel length of 55.0 cm, Find the bullet's momentum as it leaves the barrel
Two teams of nine members each engage in a tug of war. what is the tension in the section of rope between the teams
Suppose that the separation between two speakers A and B is 3.20 m and the speakers are vibrating in-phase. They are playing identical 121-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker B in..
A hammer taps on the end of a 4.00-m-long metal bar at room temperature. What is the speed of sound in this metal
A ball thrown into the air lands on the same horizontal level, 31 m away, and 2.6 s later. Find the magnitude of the initial velocity
An object moving with uniform acceleration has a velocity of 16 cm/s in the positive x direction when its x coordinate is 3 cm. If its x coordinate 1 s later is -5 cm, what is its acceleration.
A step-down transformer produces a voltage of 6.0V across the secondary coil when the voltage across the primary coil is 140V, What voltage appears across the primary coil of this transformer
Order of magnitude estimation: Using physics intuition, estimate the muzzle velocity of a projectile launcher
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
When placed 1.2 m apart, the force each exerts on the other is 12 N and is repulsive. What is the charge on each? What if the force were attractive.
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