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A satellite is in a circular orbit just above the surface of themoon. The radius of the moon is 1738 km. What is the period of the satellite orbit?
A rocket moves with a velocity of 0.91c to the right with respect to a stationary observer A. What is the velocity of observer
Two identical 1.50 kg masses are pressed against opposite ends of a light spring of force constant 1.75 N/cm , Find the Speed of each mass when it has moved free of the spring on a frictionless horizontal table
A block hangs in equilibrium from a vertical spring. When two other identical blocks are added, the original block sags by 5.0 cm. What is the oscillation frequency of the three-block system
The driver of a car sets the cruise control and ties the steering wheel so that the car travels at a uniform speed of 15m/s in a circle with a diameter of 130m. What arc length does it travel in this time
landing on the moon a spacecraft fires its rockets and comes to a complete stop just 16 meters above the lunar surface.
An athlete whirls a 7.49 kg hammer tied to the end of a 1.3 m chain in a horizontal circle. What is the centripetal acceleration of the hammer
You want to lift a heavy box with a mass of 98 kg using a two pulley system. If you lift the box by 1 m, how much work is done by gravity
A solid sphere is released from rest and allowed to roll down a board that has one end resting on the floor and is tilted at 22° with respect to the horizontal. find the sphere's speed when it reaches the lowest end of the board
a sledge loaded with bricks has a total mass of 17.7 kg and is pulled at constant speed by a rope inclined at 19.5deg
A car is driving directly north on the freeway at a speed of 106 km/h and a truck is leaving the freeway driving 91 km/h in a direction that is 40° west of north. What is the velocity of the truck relative to the car
An electric field of 10.6 N/C directed due north is superposed on an existing electric field of 15.3 N/C directed due east. What is the magnitude of the resultant field
Sound propagating through air at 30oC passes through avertical cold front into air that is 4.0oC. If the soundhas a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary?
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