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A wrecking ball (weight = 4400 N)is supported by a boom, which might be assumed to be uniform and has a weight of 3000 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle among the support cable and the horizontal is 32°, and the angle among the boom and the horizontal is48°.
A hardworking ant must supply 0.00955 N to pull a small piece of fruit at constant velocity over a distance of 8.60 cm up a small hill to the entrance of the colony. If the coefficient of kinetic friction between the piece of fruit and the 16.2° s..
A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 7.7 m/s. What will be its speed when it hits the opposing wall
A mass m2 = 1.8 kg, on a 39.4° incline, is connected to a mass m1 = 5.2 kg, on a horizontal surface. find the magnitude of the tension in the connecting cord
A model rocket is constructed with a motor that can provide atotal impulse of 21.0 N·s. The mass of the rocket is 0.243kg. What is the speed that this rocket achieves when it is launchedfrom rest? Neglect the effects of gravity and air resistance.
A sinusoidal voltage ?v = (75 V) sin (100t) is applied to a series RLC circuit with L = 50 mH, C = 160 ?F, and R = 34 ?. What is the impedance of the circuit
A 33.2 m steel wire and a 25.6 m copper wire both with 1.00 mm diameters, are connected end to end and are stretched to a tension of 120 N. How long does it take the transverse wave to travel the entire length of the two wires.
you make a capacitor by cutting the 12.5-cm-diameter bottoms out of two aluminum pie plates separating them by 3.50 mm
A mirror produces an image that is located 38.00 cm behind the mirror when the object is located 7.60 cm in front of the mirror. What is the focal length of the mirror?
When B-10 is bombarded by neutrons, a neutron can be absorbedand an alpha particle emitted. If the B-10 target isstationary the kinetic energy of the reaction products is equal to
A dentist's chair with a patient in it weighs 1960 N. The output plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of 56 N to the input piston.
An isolated capacitor of unknown capacitance has been charged to a potential difference of 100V. Calculate the unknown capacitance
A uniform ladder is 10m long and weighs 400 N. It rests with itsupper end against a frictionless vertical wall. Its lower end rests on the ground and is preventedfrom slipping by a peg driven into the ground. The ladder makes a 30?
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