About how many minutes would it take drizzle with a diameter of 200 µm to reach the surface if it falls at its terminal velocity from the base of a cloud 1000 m (about 3300 ft) above the ground? (Assume the air is saturated beneath the cloud, the drizzle does not evaporate, and the air is still.)
a. 5 minutes
b. 17 minutes
c. 20 minutes
d. 24 minutes
About how many minutes would it take drizzle with a diameter of 200 µm to reach...
A spherical raindrop 1.9 mm in diameter falls through a vertical distance of 4150 m. Take the cross-sectional area of a raindrop = πr2, drag coefficient = 0.45, density of water to be 1000 kg/m3, and density of air to be 1.2 kg/m3. (a) Calculate the speed a spherical raindrop would achieve falling from 4150 m in the absence of air drag. _________ m/s (b) What would its speed be at the end of 4150 m when there is air...
7. The nearest star is 4.1 x 1016 m away. Suppose you had a spaceship that could accelerate from rest at 10 m/s? for half a year, then continues at constant speed. How long would it take to reach the nearest star? Use 1 year 365 days, 24 hours -1 day, 60 minutes 1 hour, 60 seconds 1 minute. も. 15768111 vA: at 2 1.24 16 15 구 68 oooo 8. A roofer on the ground throws a hammer to...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
SYNOPSIS The product manager for coffee development at Kraft Canada must decide whether to introduce the company's new line of single-serve coffee pods or to await results from the product's launch in the United States. Key strategic decisions include choosing the target market to focus on and determining the value proposition to emphasize. Important questions are also raised in regard to how the new product should be branded, the flavors to offer, whether Kraft should use traditional distribution channels or...