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A 6-m-long pole AB is placed in a hole and is guyed by three cables. Knowing that the tensions in cables BD and BE are 442 N and 322 N, respectively, determine
(a) The tension in cable CD,
(b) The reaction at A.
Gravity is the only force acting on a 2 kg mass. The potential energy of the mass increases by 144 J, What is the change in velocity of the mass
It is desired to magnify reading material by a factor of 2.21× when a book is placed 7.96 cm behind a lens. What is the power of the lens in diopters
A car is traveling down a hill that makes an angle of 14° with the horizontal. Find the acceleration of the car
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
For a wavelength of 420nm, a diffraction grating produces a bright fringe at an angle of26°. What is the unknown wavelength
Two 10-cm-diameter charged rings face each other, 18.0cm apart. Both rings are charged to + 50.0nC . What is the electric field strength at the center of the left ring
a newly proposed device for generating electricity from the sun is a heat engine in which the hot reservoir is created
A proton enters the region between the two plates shown in the figure moving in the x-direction with a speed v = 1.61 106 m/s. The potential of the top plate is Vt = 245 V, and the potential of the bottom plate is Vb = 0 V.
Which will give the greater improvement in the efficiency of a Carnot engine, a 10 degree C increase in the high-temperature reservoir, or a 10 degree C decrease in the low-temperature reservoir?
Illustrate energy bar graphs to solve the problem . What is amplitude of the oscillations.
A 50.0 kg child stands at the rim of a merry-go-round of radius 1.65 m, rotating by an angular speed of 2.50 rad/s. What is the child's centripetal acceleration? What minimum coefficient of static friction is needed?
A listener increases his distance from a sound source by a factor of 3.62. what is the change in the sound intensity level in dB
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