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An object of mass 6.8 kg is attached to aspring of force constant 1720 N/m. The object is set into simple harmonic motion, with an initial velocity of vo=4.1m/s and an initial displacement of xo=0.11m. Calculate the maximum velocity the object has during its motion.
A person weighs 689 N and the head is 53 N the average density of the person is 1010 kg/cubed meters how much force in N is required to keep a persons head out of the water.
In a classic carnival ride, patrons stand against the wall in a cylindrically shaped room. What is the minimum coefficient of friction needed between the wall and the person
A factory worker pushes a 34.0 kg crate a distance of 3.7 m along a level floor at constant velocity by pushing horizontally on it, How much work is done on the crate by the normal force
a one pound weight is released 3 feet off the ground. at the same time a two pound weight is released 5 feet off the
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. The temperature increases by 9?C. By how much is it off at the end of one day
What work is done when a 2 C is moved through an electric potential difference of 2 V? Calculate to two decimal places
An electron confined in a harmonic potential well emits a 1280nm photon as it undergoes a 5 ? 4 quantum jump. What is the spring constant of the potential well
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
A potter's wheel (a solid, uniform disk) of mass 6.0kg and radius 25cm spins about its central axis with an angular speed of the wheel is 15rpm. Find the new angular speed of the system
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
A bat can detect small objects such as an insect whose size is approximately equal to one wavelength of the sound the bat makes. what is the smallest insect a bat can detect
One end of an iron rod 40 cm long and 3.3 cm in diameter is in ice water, the other in boiling water. What is the heat-flow rate along the rod
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