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A level is set up midway between two wood stakes that are about 300 feet apart. The rod reading on Stake A is 9.65 ft and the reading on stake B is 4.23 ft. The level is then set up 6 feet in front of stake B. Now the reading at stake A is 10.78 feet and at stake B is 5.42 feet. What is the correct difference in elevation between stakes A and B? If the level was in perfect adjustment, what would have the reading been on stake A at both setups?What is the line of sight error in 300 feet? Show this in a sketch.
Is the correct difference in elevation between A and B just 9.65 - 4.23 ft? Being that the level is halfway between the two points, does that mean that the light of sight error is really just 0? In order to solve for the reading on A, would you have to subtract the difference in elevation after the level is moved?
an average vehicle puts out nearly 20 lbm of carbon dioxide into the atmosphere for every gallon of gasoline it burns, thus one thing we can do to reduce global warming is to buy a vehicle with higher fuel economy.
The velocity along a pathline is given by V (m/s) = s^2 x t^(1/2) where s is in meters and t is in seconds. The radius of curvature is 0.5 m. Evaluate the acceleration along and normal to the path at s = 2m and t = 0.5 seconds.
A water-filled U-tube manometer is used to measure the pressure inside a tank that contains air. The water level in the U-tube on the side that connects to the tank is 5 ft above the base of the tank.
A 10cm diameter vertical tank holds 20cm of water topped with 15cm of ethyl alcohol. The cylinder is rotated about its central axis at a rotation rate of 20 rad/s. (a) What will be the shape of the air-alcohol and alcohol-water interfaces (include ..
Determine the number of man-hours required to form the structure using data from R. S. Means or other appropriate reference. What is the difference between labor cost and labor pro-ductivity?
The crate has a wieght of W = 350lb., and the coefficients of static and kinetic friction are us = 0.3 and uk = 0, respectively. Determine the friction force on the floor. Theta = 45 degrees and P = 100lb.
a spot speed study was conducted on a freeway on which the mean speed and the standard deviation were found to be 72 .4 mi/hr and 5.4 mi/hr, respectively. what is the range of the values that would be expected to contain the middle 95 percent of s..
The transportation agency would like to determine the maximum spacing of stations to allow trains to arrive no more than 5 minutes apart. 1. Draw a time-space diagram depicting the above scenario
Using the ADA code, what is the allowable minimum length of the ramp base if base if it is 2 ft high and the code is 1:12
Data obtained from aerial photography showed six vehicles on 900 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 4.3 sec. Determine (a) The density on the highway. (b) The flow on the road, and
The condenser in a refrigerator receives R-134a at 700 kPa and 50C, and it exits as saturated liquid at 25 C, The flow rate is 0.1 kg/s,and the condenser has air in at an ambient temperature of 15 C and leaving at 35 C. Find the minimum flow rate ..
A sample of neon has a volume of 555 mL when it is at a pressure of 813 mmHg. What will be the volume when the pressure is increased to 1138 mmHg?
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