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How would you determine the extension of the spring when a force is applied to it?
a. Use the length before the force is added.
b. Use the length after the force is added.
c. Add the before and after lengths together.
d. Subtract the length before the force is added from the length after the force is added.
Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 547m in 221s.
A regular hexagon shaped wire loop with a side length of a = 68.0 cm carries an electric current of I = 19.5 A as shown in the figure. Determine the size of the magnetic field at point P, the center of the hexagon.
You want to use a lever to lift a dumpster that weighs 5200 N. You arrange the lever so that it is approximately horizontal and makes contact below the dumpster's center of mass at a distance of 0.40 m from the lever's pivot. About how much torque..
The engine produces 375 kJ of work. How much heat is rejected to the surroundings?
Three attempts are made to read data in a magnetic storage device before an error recovery procedure that repositions the magnetic head is used.
the fundamental resonance on a string of 60 cm length fixed at both ends is 440 hz. what is the speed of a wave
You are the ground-control commander of a 2000 kg scientific rocket that is approaching Mars at a speed of 25,000 km/h . It needs to quickly slow to 15,000 km/h to begin a controlled descent to the surface.
Calculate the total binding energy, and the binding energy per nucleon, for 7/3Li. The masses of the atoms of 7/3Li and 1/1H are 7.016004 u and 1.007825 u, respectively
A cyclist is at rest at a traffic light. When the light turns green he accelerates at a uniform rate of a = 1.2 m/s2. How many seconds after the light turn green does he reach his cruising speed of 6 m/s? Please explain step by step.
A uniform rod of length L1 = 1.9 m and mass M = 3.0 kg is supported by a hinge at one end and is free to rotate in the vertical plane. The rod is released from rest in the position shown. A particle of mass m is supported by a thin string of lengt..
A 0.66-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.14 to 0.25 m (relative to its unstrained length) the speed of the sphere decreases from 6.15 to 4.55 m/s. What is the spring constant of the spring?
A solar collector that can provide 1.0W of power forcharging the 3.0V batteries. What is the maximum charging current the solar collector could supply to fully discharged 3.0V bateries.
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