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You have a spring and you measure its natural length to be 10.0 cm. When you hang the massless spring from the ceiling and attach a 4kg mass to it, you measure the length to be 14.0cm. You then attach the spring to a 6.00kg mass in the configuration below and set it in harmonic motion. What is the period of this motion in seconds?
a 2.1-m-long vertical pole extends from the bottom of a swimming pool to a point 50.0 cm above the water. What is the length in meters of the shadow of the pole on the level bottom of the pool
A mine car (mass=490 kg) rolls at a speed of 0.50 m/s on a horizontal track, as the drawing shows. Determine the speed of the car-coal system
A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). How many free electrons does the battery contain
The largest fusion bomb ever detonated (called the Tsar Bomba) was tested by the Soviet Union in 1961. If this bomb used the deuterium-deuterium fusion reaction, how many kilograms of deuterium were required
A wooden cube of side 0.30 m has density of 700 kg/m^3 and floats partially submerged in seawater(density = 1025 kg/m^3). what is the total mass of the cube
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. What is the volume flow rate of the petroleum along the pipe
A disk-shaped merry-go-round of radius 2.73m and mass 185kg rotates freely with an angular speed of 0.681rev/s. What is the final angular speed of the merry-go-round
You and your surfing buddy are waiting to catch a wave a few hundred meters off the beach. The waves are conveniently sinusoidal, What is the frequency of the waves, Find the speed of the waves
Finally is the length is unchanged but the mass is equal to 0.500kg find the period T of the pendulum that is independent of the angle.
A certain waffle iron is rated at1.03kW when connected to a 120-V source. What current does the waffle iron carry?
When a 47.0-V emf device is placed across two resistors in series, a current of 15.0 A is flowing in each of the resistors. find the magnitude of the larger of the two resistances
A golf club 1.01 m long completes a downswing in .25 s through a range of 180 degrees. What is the tangential acceleration of the end of the club?
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