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A coast guard helicopter hovers between an island and a damaged sailboat. How would you calculate the direct distance between the helicopter and the sailboat?From the island, the angle of elevation to the helicopter is 73 degrees.From the helicopter, the island and the sailboat are 40 degrees apart.A police rescue boat heading toward the sailboat is 800 m away from the scene of the accident. From this position, the angle between the island and the sailboat is 35 degrees.At the same moment, an observer on the island notices that the sailboat and the police rescue boat are 68 degrees apart.Explain how you would calculate the straight-line distance, to the nearest metre, from the helicopter to the sailboat. Justify your reasoning with calculations.
A closed, rigid container with a volume of 1 m3 contains H2O initially at a pressure of 800 kPa and temperature of 500 C. Heat transfer occurs to the surroundings. At what temperature, in deg C, will condensation start to occur
Determine the batch weights needed for all materials for a 1yd^3 batch yielding an f'c= 2500 psi given the following information.
A solution containing 30% methanol (by mol) is flashed to 1 bar, 70.82°C. Determine the phase of the system; if 2 phases, report the compositions and relative amounts of each phase.
Determine the maximum force P that can be applied without causing the two 50-kg crates to move. The coefficient of static friction between each crate and the ground is 0.25 The crates are next to each other connected
A pipe line of 1.25 m diameter has a circular gate at its end. This gate can be operated around its horizontal diameter. If the pipe is flowing full with velocity almost equal to zero, calculate the turning moment required to operate the gate
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
A differential leveling loop began and closed on BM bridge (elevation 103.895m). The plus sight and minus sight distances were kept approximately equal
A machine has an initial cost of $10,000. Its market value declines by 20% annually. The repair costs are covered by a warranty in year 1, and then they increase $600 per year. The firm's MARR is 15%.
Use modern software tools to analyze a structural system of a building.
A steel tank with 2.5 m high vertical walls and a flat triangular floor is filled with three immiscible liquids layered upon each other. Two of the walls are 1.2 m long and perpendicular to each other.
A dam project specifies 97% compaction. Lab tests on the soil being used indicate that it has a maximum dry density of 1900 kg/m3 at an optimum water content of 13.2%. Field tests give the following results: Field dry density is 1790 kg/m3 and 16...
There are three reactors degrading a chemical biologically, at three degradation rates; i.e., 0.2 d^-1, 0.4 d^-1, and 1.0 d^-1. The residence time of the chemical in these reactors are 10 d, 5 d, and 55 d, respectively
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