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A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel of radius 0.4 m and observes that drops of water fly off tangentially. She measures the height reached by drops moving vertically. A drop that breaks loose from the tire on one turn rises 38.8 cm above the tangent point. A drop that breaks loose on the next turn rises 36.6 cm above the tangent point (the angular speed of the wheel is decreasing). Find the angular deceleration of the wheel. The acceleration due to gravity is 9.8 m/s2 . Assume the angular deceleration is constant.
In a two-slit experiment, the third bright fringe away from the central fringe is observed at an angle 7 degrees. what is the distance between the two slits
A convex spherical mirror with a radius of curvature of 11.0 cm produces a virtual image one third the size of the real object. Where is the object
how fast was the car going on the table. find the vertical and horizontal components of the pendulum's displacement.
A 7 kg sled is initially at rest on a horizontal road. determine the change in the kinetic energy of the sled
A spool of thread has an average radius of 1- cm. If the spool contains 62.8 m of thread, how many turns of thread are on the spool.
A sound wave with intensity 4 mW/m2 interferes destructively with a sound wave that has an intensity of 13 mW/m2
A person with nearsightedness was prescribed with contact lenses of power -2.0 D. What is the range of object distances that this person can see clearly with the wrong lenses
A 300 g block on a 50.0 cm -long string swings in a circle on a horizontal, frictionless table at 60.0 rpm, What is the speed of the block
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.2 mm, What is the resistance ratio RA/RB , measured between their ends
A generator rotates at 87Hz in a magnetic field of 9.0×10?2T . It has 600 turns and produces an rms voltage of 180V, find the area of each turn of the coil
A block of mass m1 = 0.55kg is placed on top of another block of mass m2 =0.91kg, What minimum coefficient of static friction between the two blocks will prevent the upper one from slipping
Two long, parallel wires are separated by a distance of 3.40. The force per unit length that each wire exerts on the other is 3.20×10-5, and the wires repel each other. The current in one wire is 0.6690.
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