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You are given a pendulum composed of a 0.038 kg mass on the end of a 0.6 m long massless string. If the pendulum is moved 30° from the vertical and released, find the velocity of the mass as it passes through the vertical.
A pair of speakers separated by 0.900 m is driven by the same oscillator at a frequency of 672 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers. (Assume the spe..
A 1.5 ?F capacitor is charged to 57 V by a battery, which is then removed. At time t = 0, Calculate the potential difference VL(t) across the inductor as a function o
A railroad car of mass 3.3 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
The velocity graph of a car accelerating from rest to a speed of 60 km/h over a period of 30 seconds is shown. Approximation the distance, d travelled throughout this period.
A 2.40kg mass is pushed against a horizontal spring of force constant 26.0N/cm on a frictionless air table. The spring is attached to the tabletop, Find the greatest speed the mass reaches
The coefficient of static friction between the block and table's surface is &mu s = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan & theta = n2. What is the minimum value of mass, n3 Kg t..
A 64 Ω resistor is connected in parallel with a 115 Ω resistor. This parallel group is connected in series with a 20 Ω resistor. The total combination is connected across a 15V battery.(a) Find the current in the 115 Ω resistor.(b) Find the power ..
A uniform plank of length 4.50 m and weight 275 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 456 N walk on the overhanging part of the plank before it just be..
Two equal masses collide in space away from any gravitational object. Mass A is moving in a straight line at 45 m/s, Find the speeds of the two masses after the collision
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
You are so tired after studying that you leave all of these household devices turned on for 13.0 hours, Calculate the cost (in dollars) of the electric bill
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