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In the United States, some scientists, sociologists, and politicians propose that the access to environmental quality is not evenly distributed across.
If this bump can be approximated as a Rankine half-body what is the maximum velocity as water moves over the bump.
What is the solute potential (in head units) of the solution? State assumptions. Estimate the concentration of the sodium chloride solution.
Determine the weight of the bucket of soil after the rainfall (you may disregard the weight of the empty bucket).
Briefly describe the principle of operation of Neutron Attenuation (neutron probe) and Time Domain Reflectometry. What do these measure and how?
Discuss the precautions that must be followed to avoid contamination of evidence that may contain DNA evidence.
Two runners are in a race. Both runners start at the same time. The first runner travels at a constant velocity of 6 m/s.
You drop a stone with initial velocity v0; air drag is negligible (and take g = 10 m/s2). Calculate the final speed of the stone when it hits the ground if:
The vector representing the acceleration of system A is shown at right. Draw the acceleration vectors for systems B and C using the same scale. Explain.
A 12 m long bar, when heated from 20 °C to 70 °C, becomes 12.008 m long. Calculate the linear expansion coefficient of that bar.
What is the magnitude of the lift force? Determine the magnitude of the air resistance that opposes the motion.
Find the maximum upward acceleration experienced by the crewman. Find the maximum downward acceleration experienced by the crewman.
Describe the basic concept of the Atwood's machine. What is the net applied force? What is the mass to which this net force is applied' Show your work.
Calculate the coefficient of friction between the 2 surface in contact.write the free body diagram.
What is the magnitude of the acceleration of the vertically hanging mass, if the rope does not slip on the pulley?
What is the speed of the bomb when it hits the ground? Calculate the horizontal range of the bomb.
When turned ON, the tank system of Figure alternately fills to level L and then empties to level E. The level switches are activated on a rising level.
When the On button is pushed, the system motor moves the arm to the rightlimit switch position and waits 30 seconds.
The system of Figure has the following functions: move a work piece into position, clamp it, start the drill, move it down to drill a hole.
The temperature of water in a tank is controlled by a two-position controller. When the heater is off the temperature drops at 2 K per minute.
A floating controller with a rate gain of 6%/min and has a deadband. Plot the controller output for an input given by Figure. The setpoint is 60 gal/min.
For a proportional controller, the controlled variable is a process temperature with a range of 50 to and a setpoint of 73.5°C.
Develop the physical ladder diagram for a motor with the following: NO start button, NC stop button, thermal overload limit switch.
Construct a state variable description of the process shown in Figure. The timer output (TU) is initially low when its input (TM) is low.
Design a state variable solution to the system of Figure such as in below problem. Assume another binary input, R, that is 1 when the system is running.