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Two forces parallel to the x axis do 18.6 J of work on a small tray while moving it 23.9 m in the x direction across a gym floor. One of the forces has a value of +3.53 N in the x direction. What is the other force?
A 0.840 millimeter diameter silver wire carries a 50 mA current. Determine the electron drift speed in the wire
A car sounding its horn (rated by the manufacturer at 600 Hz) is moving at 20 m/s toward the east. What frequency will he hear the assuming that the speed of sound is 343 m/s
Estimate, or otherwise discuss, the amplitude of your wave. Please show all the physics formulas and all your calculations step by step.
A spacecraft passes you traveling forward at 0.271 the speed of light. By what factor would its relativistic momentum increase
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2. Calculate the characteristic frequencies of such a chain is th..
q1. bob of mass m drops from a tree limb at the same time that esther also of mass m begins her descent down a
A lead block is suspended from the underside ofa 0.5 kg block of wood of density of 668 kg/m3. what is the mass of the lead block
Three people are pulling on a box. The first person is pulling with a force of 100 N at 37 degrees with respect to the positive x-axis. find the force that the third person is exerting
Four particles with masses 8 kg, 4 kg, 2kg, and 2kg are connected by rigid rods of negligible mass as shown. calculate the moment of inertia of the system about the z axis
A mass of 125g is suspended from a spring of a spring constant of 38N/m. When this mass is pulled down 3mm and set in oscillation, what is the period and frequency of the oscillation? How different would be both, the period and frequency, if the m..
A parallel-plate capacitor having plates 5.8cm apart is connected across the terminals of a 12Vbattery. Do the same for the equipotential surface that is at 2.2V relative to the negative plate. What is the potential gradient among the plates?
A ball rolls down a board which is 20 degrees to the horizontal. This time there is a coefficient of kinetic friction of 0.1. What is its speed at the bottom of the board
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