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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?
The longest recorded pass in an NFL game traveled 83 yards in the air from the quarterback to the receiver. find the speed at which the ball left the quarterback's hand
A block of mass m1 = 3.90 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, What is the magnitude of the tension in the cord
Two point particles with masses m and 4m are placed along the x-axis at x = - a, Calculate the gravitational field and gravitational potential at x = 0
Three 3 uC charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 uC charge. Find the electric field at the center of the square
A gem-quality diamond has a small flaw located 1 mm directly below one face. How far below the face does this flaw appear to an observer
A 4.00-microF capacitor that is initially uncharged is connected in series with a 7.90-k ohm resistor and an emf source with E = 120 V and negligible internal resistance. what is the voltage drop across the resistor
A stone is thrown horizontally at 70.0 m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2.00 s intervals for the first 10.0s
The maximum torque experienced by a coil in a 0.65 T magnetic field is 8.4 10-4 N · m. find the length of the wire from which the coil is made
In a game of football outdoors on a cold day, a player will begin to feel exhausted after using approximately 7.8x105 J of internal energy. What is the magnitude of the heat that he has lost
The tallest volcano in the solar system is the 22km tall Martian volcano, Olympus Mons. An astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball's 22km fall at a value..
A student throws a baseball at a large gong 76 m away and hears the sound of the gong 1.95758 s later. What was the average speed of the base- ball on its way to the gong
A betatron is a charged particle accelerator that works by generating an induced electric field to accelerate the charged particles. What is the amplitude of the oscillating electric field at a distance 0.62 m from the axis of the betatron
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