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A 2000-N load Q is applied to the pulley C, which can roll on the cable ACB. The pulley is held in the position shown by a second cable CAD, which passes over the pulley A and supports a load P. Determine
(a) The tension in the cable ACB,
(b) The magnitude of load P.
A rock is thrown vertically upward with a speed of 11.0 from the roof of a building that is 40.0 above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground?
Two 6.0 kg objects head toward each other. Object A moves with a velocity of +7.0 m/s and Object B travels with a velocity of -5.0 m/s. What are their resulting velocities if the collision is perfectly elastic
A 10 kg box slides 4.0 m down a frictionless ramp and collideswith a spring as shown in the figure. The spring constant is 250N/m. At what compression of the spring does the box have its maximum speed?
an asteroid fragment wandering through space is often referred to as a meteoroid. when entering earths atmosphere some
A gold prospector finds a solid rock that is composed solely of quartz and gold.The total mass and total volume of the rock are, respectively, 13.0 kg and 3.50 10-3 m3. determine the mass mG of gold in the rock
How to compute the average force
A light bulb is wired in series with a 124 resistor, and they are connected across a 120.0-V source. What is the resistance of the light bulb
Two sinusoidal waves of the same period, with amplitudes of 4.0 and 6.0 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 9.225 mm. The phase constant of the 4.0 mm wave is 0. What is the..
two parallel metal plates have area a 255 cm2 and are separated by l 0.50cm. they have a potential difference of 0.25
60 cm^3 of gasoline are mixed with 50cm^3 of water. What is the average density of the mixture? 55g of gasoline are mixed with 60g of water. What is the average density of the mixture
At a distance of 1.41 m from a point charge of +2.74 ?C, how many of the additional equipotential surfaces are crossed by the time the electric field has shrunk to one-half of its initial value
an electron in a cathode-ray tube is traveling horizontally at 2.60times109 cms when deflection plates give it an
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