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A mass m = 17.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4047.0 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is ?k = 0.42. The mass leaves the spring at a speed v = 2.9 m/s.1) The mass is measured to leave the rough spot with a final speed vf =1.2 m/s2) What is the length of the rough spot?3) In a new scenario, the block only makes it half-way through the rough spot. How far was the spring compressed from its unstrectched length?4) In this new scenario, what would the coefficient of friction of the rough patch need to be changed to in order for the block to just barely make it through the rough patch?
At a certain time a particle had a speed of 84 m/s in the positive x direction, What was the average acceleration of the particle during this 2.7 s intervl
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 50.6 m when its initial speed is 79..
A 0.002 m^3 block of wood is fully submerged in water of density 1000kg/m^3 by a string with tension 10 N. Find the density of the wood
once upon a time, a stunt man would jump across the grand canyon a motorcycle. What minimum initial speed would be required to make across the canyon
A textbook of mass 2.10kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.190m, What is the tension in the part of the cord attached to the book
An electron enters a region of space containing a uniform 0.0000217-T magnetic field. Its speed is 189 m/s and it enters perpendicularly to the field. Find the radius of the electron\'s orbit
A 100-kg streetlight is supported equally by two ropes. One rope pulls up and to the right, 40° above the horizontal; What is the tension in each rope
A ball traveling in a circle with a constant speed of 3 m/s has a centripetal acceleration of 4 m/s2. What is the radius of the circle
what is the sign of the charge on the electroscope that you charged by induction, What evidence do you have to support your answer
A square loop of wire of edge length a carries current i. Find the magnitude of the magnetic field produced at a point on the central perpendicular axis of the loop and a distance x from its center?
After being accelerated to a speed of 1.76×105m/s , the particle enters a uniform magnetic field of strength 0.800T and travels in a circle of radius 35.0cm, Find the ratio m/q for this particle
The speed of a bobsled is increasing, because it has an acceleration of 2.99 m/s2. compute the magnitude of the net force that acts on the bobsled
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