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The Mariana Trench, in the Pacific Ocean, is about 10.1 km deep. The acceleration of gravity is 9.81 m/s2 . If atmospheric pressure at sea level is 1.01 x 105 Pa and the density of sea water is 1.025 x 103 kg/m3, how much pressure would a submarine need to be able to withstand to reach this depth?
Water flows at speed of 5 m/s through a horizontal pipe of diameter 3.4 cm. The gauge pressure P1 of the water in the pipe is 1.5 atm. A short segment of the pipe is constricted to a smaller diameter of 2.3 cm. What is the gauge pressure of the wa..
A generator rotates at 87Hz in a magnetic field of 9.0×10?2T . It has 600 turns and produces an rms voltage of 180V, find the area of each turn of the coil
A 722-kg car stopped at an intersection is rear-ended with a 1620-kgtruck moving with a speed of 14.5 m/s. If the car was in neutral and its brakes were off, so that the collision is approximately elastic, discover the final speed of both vehicles af..
a father racing his son has half the kinetic energy of the son who has half the mass of the father. the father speeds
The motion of the bucket illustrated below is controlled by the hydraulic cylinders AD, CG and EF. As a result of an attempt to disclose a portion of a slab, a force 2P is exerted on the bucket at the teeth J. Determine the force exerted by each c..
A wire whose resistance is R = 140 is cut into 9 equally long pieces, which are then connected in parallel. What is the resistance of the parallel combination
A 1.0 kg ball is at rest on the floor in a 2.0 m x 2.0 m x 2.0m room of air at STP. Air is 80% nitrogen (N2) and 20%oxygen (O2) by volume. what is the thermal energy of the air in the room
A hockey puck is given an initial speed of 5.4m/s. how far does the puck slide before coming to rest
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the ea..
A parallel-plate capacitor has a capacitance of 19.0 µF. What charge on each plate would produce a voltage of 36.0 V between the plates? What is the voltage between the plates?
In both (a) and (b) the acceleration on the 5-kg box (M) is as large as it can be without the box sliding. Find the coefficient of static friction for each case if the magnitude of the acceleration is 4 m/s2.
A uniform rod (L= 3 m) and mass (M = 1 kg) is pivoted about a horizontal frictionless pin through one end. What is the angular speed of the rod when it passes through the vertical position
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