Capillarity in soils ________
A) involves both adhesion and cohesion
B) is not involved in the process of water uptake from soils
C) is independent of the matric potential in soils
D) is enhanced by the symmetrical nature of the water molecule
E) does not account for unsaturated water movement in soils
A
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? Identify and state the historical significance of Nathanael Greene.
What will be an ideal response?
The Beat Generation can be described in all of the following ways EXCEPT
A. they formed the protest culture of the late 1950s and early 1960s. B. they promoted interest in bebop jazz and Eastern religious mysticism. C. in founding their own movement, the hippies later rejected many of the Beat notions. D. they embraced sexual liberation. E. their name came from the term "beatnik," meant as a Cold War insult.
The article “Modeling Arterial Signal Optimization with Enhanced Cell Transmission Formulations” presents a new method for timing traffic signals in heavily traveled intersections. The effectiveness of the new method was evaluated in a simulation study. In 50 simulations, the mean improvement in traffic flow in a particular intersection was 654.1 vehicles per hour, with a standard deviation of 311.7 vehicles per hour.
a. Find a 95% confidence interval for the improvement in traffic flow due to the new system. b. Find a 98% confidence interval for the improvement in traffic flow due to the new system. c. A traffic engineer states that the mean improvement is between 581.6 and 726.6 vehicles per hour. With what level of confidence can this statement be made? d. Approximately what sample size is needed so that a 95% confidence interval will specify the mean to within ±50 vehicles per hour? e. Approximately what sample size is needed so that a 98% confidence interval will specify the mean to within ±50 vehicles per hour?
Which of the following statements about asynchronous and synchronous counters is true?
A) The clock pulse for a synchronous counter is applied only to the LSB flip-flop. B) The clock pulse is applied directly to all flip-flops in a synchronous counter. C) The clock pulse is applied directly to all flip-flops in an asynchronous counter. D) An asynchronous counter runs freely without an input clock pulse.