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A student investigating circular motion places a dime 10 cm from the center of a 33 1/3-rpm record on a turntable. The record player can accelerate at 1.42 rad/s squared. The student notes that the dime slides outward 2.25 s after she has switched on teh turntable. (a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime and the record?
A solid cylinder carries a current that is uniform over its cross section. Where is the magnitude of the magnetic field the greatest ?
What is the net force on an object with a force of 0.99N at a 25 degree angle, force of 1.03N at a 195 degree angle
In a marathon race, Chad is out in front, running due north at a speed of 3.95 m/s. John is 92 m behind him, running due north at a speed of 4.53 m/s. How long does it take for John to pass Chad
An Indy car with a speed of 125km/h goes around a level, circular track with a radius of 1.3km. What is the centripetal acceleration of the car.
A particle with a charge of 4C and a mass of 12kg is travelling in a circular path around a fixed particle of charge -3C. The velocity is observed to be 3x10^3 meters per second. what is the radius of the circular path?
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What angle does the velocity vector make with the horizontal
A 2.10-cm-high insect is 1.50m from a 139-mm-focal-length lens. Where is the image? Follow the sign conventions, How high is the image
A certain freely falling object requires 1.45 s to travel thelast 38.0 m before it hits the ground. From what height above theground did it fall
A golf club strikes a 0.044-kg golf ball in order to launch it from the tee. For simplicity, With what speed does the ball leave the club
If it takes an average force of 8.79 N to push a 4.35-g dart 4.65 cm into a dart gun, assuming the barrel is frictionless, how fast will the dart exit the gun
A 1000 car pushes a 2000 truck that has a dead battery. What is the magnitude of the force of the truck on the car
A wall clock has a second hand 20.0 long. What is the radial acceleration of the tip of this hand?
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