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A 2.50 kilogram workbook or textbook is forced against a horizontal spring of negligible mass and force constant 250 N/m, compressing the spring a distance of 0.250 meter. When released, the workbook slides on a horizontal tabletop with coefficient of kinetic friction uk=0.30. Use the work-energy theorem to obtain how far the textbook moves from its initial position before coming to rest.
The driver of a car travelling at a speed of 144.0 km/hr along a horizontal road suddently hits the brakes. how far will the car travel before stopping
A -kg box is being lifted by means of a light rope that is threaded through a single, light, frictionless pulley that is attached to the ceiling, what average power is delivered by the person pulling on the rope
An electron and a positron, each moving at 3.0*10^5 m/s, collide head on, disappear, Determine the momentum of each photon
A magnifier has a magnification of 8 times. How far from the lens should an object be placed so that its (virtual) image is at the near-point distance of 25 {rm cm}.
A thermodynamic system is operated at a constant pressure of 2 atm. Initially the volume of the system is 1m3. How much work is done by the system
A 1120 kg four door sedan hits a 1420 kg minivan that is at rest. The two cars lock together and skid 12.0 m on a level surface before stopping. what is the frictional force acting on the two cars
An emphysema patient is breathing pure O2 through a face mask. how long will the cylinder last
Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star
q1. a student in a parked car honks the horn that has a proper frequency of 310.00 hz. an observer in an approaching
how long does it take for a person to radiate. Calculate the time of flight.
What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 580
An electron is moving to the north with a speed of 325 m/s when it encounters a magnetic field of 5 x 10^-5 T. What is the direction of the magnetic force acting on this particle
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