A woman wishing to know the height of a mountain measures the angle of elevation of the mountaintop as θ1 = 11.6°. After walking d = 0.81 km closer to the mountain on level ground, she finds the angle to be θ2 = 13.7°. a. Draw a picture of the problem, neglecting the height of the woman's eyes above the ground. b. Select variable names for the mountain height (suggestion:y) and the woman's original distance from the mountain(suggestion: x) and label the picture. (Do this on paper. Your instructor may ask you to turn in this work.)c. Using the labeled picture and the tangent function, write two trigonometric equations relating the two selected variables. (Dothis on paper. Your instructor may ask you to turn in thiswork.)d. Find the height y of the mountain by first solving one equation for x and substituting the result into the other equation.
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Physics, 22.06.2019 03:00
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
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An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
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Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
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Physics, 22.06.2019 20:30
Acold front traveling southeast collided with a warm front traveling northwest the following map shows the weather on monday the day the two fronts collided which of these describes the weather forecast for mississippi on tuesday and wednesday
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A woman wishing to know the height of a mountain measures the angle of elevation of the mountaintop...
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