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A car is accelerating while its horn is sounding. Just after the car passes a stationary person, the person hears a frequency of 1004.8 Hz. Sixteen seconds later, the frequency heard by the person has decreased to 1002.8 Hz. When the car is stationary, its horn emits a sound whose frequency is 9.90 102 Hz. The speed of sound is 343 m/s. What is the acceleration of the car?
A satellite is in a low circular orbit about the Earth (such as it just skims the surface of the Earth). How long does it take to make one revolution around Earth.
A partcile is moving along the x-axis has a position given by x=(24t-2.0t^3)m, where t is measured in seconds. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?
The work function for platinum is 6.35 eV. Ultraviolet light of wavelength 150 nm is incident on the clean surface of a platinum sample. What is the photon energy of the ultraviolet light
The internal energy of a system changes becasue the system gains 176 J of heat and performs 312 J of work. During this return process, what work is involved
Two spheres with uniform surface charge density, first with a radius of 7.5cm and the second with a radius of 4.5cm , What is the surface charge density on the second sphere
Consider a Ferris wheel in which the chairs hang down from the main wheel via a cable. The cable is 2.0 m long and the wheel is 24 m in diameter. Find the speed of the chair
a closed frictionless piston-cylinder assembly contains 4 lbm of h20. beginning with an initial volume of 10 ft3 the
a man with mass m1 61 kg stands at the left end of a uniform boat with mass m2 168 kg and a length l 2.6 m. let the
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands.
I have a problem in mechanical physics where I'm given the linear mass density of a rigid plastic material. Here's the problem for context: A 42 cm diameter wheel, What is linear mass density
The partnership earnings before partners' withdrawals for 2005 totaled $484000. Calculate José's gross income from the partnership from the above for 2005.
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.595m from the axis of rotation of the stool. She is given an angular velocity of 3.05rad/s , after which she pulls the dumbbells in until they ar..
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