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A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, twelve years have elapsed on earth, and 9.2 years have elapsed on board the ship. How far away (in meters) is the planet according to the observers on earth?
A 30-caliber rifle with a mass of 2.84 kg fires a 9.73- g bullet with a speed of 556 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder
An object of mass 2.2 kg is moving in the negative x direction at a velocity of 2 m/s. find the final velocity after the object has experienced the impulse
A small steel sphere of mass 0.40kg is attached by a 5.0m long cord to a swivel pin set into the surface of a frictionless table top. What is the magnitude of the centripetal accerleration of the sphere
A 2.15 multiplied by102 g metal block at 80.0°C is placed in 1.50 multiplied by102 g of water at 10.0°C. What is the specificheat of the metal
a double slit separated by 0.0582 mm is placed 1.40 m from a screen.a if yellow light of wavelength 590 nm strikes the
A grl is strapped to a board that is moving so that gamma along the length of the board is 2.0. what is the diameter of your hole in her reference frame when she arrives
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 2.00 104 Pa, Find the speed of flow in the upper section
A 32.0 kg hammer strikes a steel spike 2.70 cm in diameter while moving with speed of 24.0 m/s. The hammer rebounds with speed 11.0 m/s after 0.110 s. What is an average strain in the spike all through the impact.
The mass density of an object is 16.0 g/cc, and its mass is determined to be 134 g. What is the volume of the object
A pilot flying from Honolulu to California flies at an airspeed of 300.0 m/s ("airspeed" - airplane's speed through the surrounding air) with her airplane pointed 67.0 degrees to the east of north. find the magnitude and compass bearingof the airpl..
For the two conducting balls as described in problem 1, when one ball is attached to a torsion balance the wire is twisted by a torsional angle of 1°. find the torsion constant of the wire
A speed skater moving across frictionless ice at 8.1{\rm m}/{\rm s} hits a 6.0{\rm m} -wide patch of rough ice. What is her acceleration on the rough ice
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