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Water flows in the symmetrical, unfinished concrete trapezoidal channel shown in Fig. P10.77 at a rate of 120 ft3 /s. The slope is 4.2 ft/2000 ft. Determine the number of cubic yards of concrete needed to line each 1000 ft of the channel.
An object is located 20.8 cm in front of a convex mirror, the image being 4.48 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location.
A 70kg hiker climbs to the second base camp on Nanga Parbat in Pakistan, at an altitude of 3900m, starting from the first base camp at 2200m. The climb is made in 4.7hr. Calclate the following A)the work done against gravity B) the average power outp..
A 1.30-kg ball, moving to the right at a velocity of +4.52 m/s on a frictionless table, collides head-on with a stationary 8.40-kg ball. Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
A proton accelerates from rest in a uniform electric field of 600 N/C. At one later moment, its speed is 1.50 Mm/s, Find the acceleration of the proton
the drawing shows two situations in which charges are placed on the x and y axes. they are all located at the same
A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8mm, A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8m
The diameter of a blood vessel narrows by 70% due to the presence of a plaque on the blood vessel walls. By what factor does the blood velocity increase?
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
If a 1000 hertz signal has a time base measurement that is off by 15 percent, determine the possible ranges in the value for the period of the signal
A 4-L pressure cooker has an operating pressure of 175 kPa. Initially, one-half of the volume is filled with liquid and the other half with vapor. If it is desired that the pressure cooker not run out of liquid water for 1 h, determine the highest..
Suppose that the brakes in your vehicle create a constant deceleration of 2.9 m/s2 regardless of determine how fast you are driving. Assume you double your driving speed from 15 m/s to 30 m/s
The atomic mass of 5626Fe is 55.934939 u, How much kinetic energy will the products of the decay have
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