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A 1100- kg car rolling on a horizontal surface has speed v= 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14cm in diameter and 60cm in length, What is the total length of wire you will need to meet these specifications
A toy of mass 0.155 kg is undergoing SHM on the end of a horizontal spring with forces constant 305 N/m. When object is a distance 1.20×10-2 m from its equilibrium position, it is observed to have the speed of 0.255 m/s.
A photon is scattered 60.0° during a collision with an electron, which is initially at rest and gains a speed of 6.00× 106 m/s during the collision
A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 12°C when it was installed. What is its change in length when the temperature drops to a frigid -38°C?
q1. a skier starts from rest at the top of a hill that is inclined at 12.0deg with the horizontal. the hillside is
An automobile tire has a volume of 1 .64 x 10-2 m3 and contains air at a gauge pressure of 165 kPa when the temperature is 0.000C. What is the gauge pressure of the air in the tires
A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground he comes to rest in a time of 0.040 s. From what height did the student fall
A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 197 N · m for 0.24 s to his arm, Find his arm's angular acceleration and final angular velocity
A television screen is illuminated using a beam of electrons traveling at 7.50×106 m/s in a 1.75×10?2 T magnetic field. find the direction of the acceleration of the electron
A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.714, What horizontal pushing force is required to just start the crate moving
During a 75-ms interval, a change in the current in a primary coil occurs. What is the change in the primary current
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
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