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A cyclist is riding a bicycle at a speed of 20 mph on a horizontal road. The distance between the axles is 42 in., and the mass center of the cyclist and the bicycle is located 26 in. behind the front axle and 40 in. above the ground. If the cyclist applies the brakes only on the front wheel, determine the shortest distance in which he can stop without being thrown over the front wheel.
What is the electric current flowing in the circuit? What is the power dissipated by the external resistor? How much power is dissipated inside the battery?
An object with a mass of 23 kg lies on a horizontal frictionless surface. What is the normal force on the object in Newtons
The image of an object placed 30cm from the lens is formed at 20 cm from the lens on the other side. Find the refractive index of the material of the lens.
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown directly forward in one case and directly backward in another
Use this algorithm to encode the string 0100001000100010101000001. Highlight the bits that follow a prefix on the second occasion that that prefix is used. (As discussed earlier, these bits could be omitted.)
A 10 kg box is being pushed up a slippery ramp at and angle of 10 degrees. What force does the man need to apply to the box to keep it traveling up the ramp at a steady speed
Choose a system consisting only the ball A. What is the momentum change of the system during the collision? What is the momentum change of the surroundings
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 , length 91.1 and diameter 2.45 from a storage room to a machinist. Calculate the weight of the rod, . The acceleration due to gravity, = 9.81 .
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C) . After traveling a distance of 0.520 m in this region, the particle has a kinetic energy 0.080 J. Determine the charge of the particle.
An electron that has velocity v = (2.0 x 106 m/s)i +(3.0 x 106 m/s) j moves through the uniform magneticfield B = (0.30 T)i - (0.15 T)j. Find the force on the electron
Does the current in the solenoid run clockwise orcounterclockwise? Explain, including physics diagrams. What is the magnitude of the magnetic field made by the solenoid?
A circular copper loop is placed perpendicular to a uniform magnetic field of 0.75 T. Due to external forces, the area of the loop decreases at a rate of 7.26 x 10-13 m2/s. Determine the induced emf in the loop.
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