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(a)The annual energy use by all of humanity is about 400 QUADS – where 1 “quad” is 1 quadrillion (1 x 10^15) BTUs. There are at least 6 billion people living on earth now. If we take those two numbers above to be exact, what is the AVERAGE POWER use per person on the planet (expressed in kW)?
(b) The U.S. accounts for just about one-quarter of all of the energy used by people on earth, and has some 300 million people. What’s the average power usage of the average American?
For a triangular channel of z=2 side slopes tha tcarries a discharge of 100 cfs at a depth of 5 ft, determine the channel slope S under the assumption that normal flow exists and that n equals 0.022.
For a car traveling 35 mph the distance required to brake for a stop is normally distributed with mean of 55 feet and standar deviation of 8 feet. You are traveling 35 mph in a residential area and a car moves abrupt into your path at a distance o..
There are two ways to get from City One to City Three, (a) directly or (b) via City Two. Let A be the event that the road from City One to Three is open. Similarly, B is for City One to Two and C is for City Two to Three.
Estimate the convectice heat transfer coefficent on hte outside of oranges (external diameter = 5 cm) when submerged in a stream of chilled water pumped around the orange.
Two kg of oxygen at 40C are contained in a 2 m3 closed rigid tank. Assuming that oxygen behaves as an ideal gas under these conditions, what is the gas pressure in the tank in bar.
water from a waste water treatment plant is released into a receiving pond that has a volume of 5 ac-ft. one of the reasons for doing this is to assure that the chlorine residual is below 0.1mg/L before the water is released to a stream as require..
When the total pressure acting at midheight of a compressible clay layer is 100 kN/m^2, the corresponding void ratio is 1.09. When the total pressure increases to 400 kN/m^2, the corresponding void ratio decreases to 0.89.
if the sphere falls at a speed of 150mm/s, what is the mean velocity relative to the cylinder wall of the water in the gap surrounding the midsection of the sphere
Water with a static pressure of 1.96kN/M2 flows through an 800 mm diameter pipe. A pitot tube pressure gage in this pipe reads a pressure of 5.88 kN/M2. Determine the velocity (V)
A venturi water meter with a throatof 6 in registers a presssure head difference of 128 in of water between the inlet and throat. calculate the quantity of flowthrough the meter using a discharge coefficient of.93.
An energy efficiency project has a first cost of $300,000, A life of 10 years, and no salvage value. Assume that the interest rate is 9%. The most likely value for annual savings is $60,000.
A bar is under uniform axial loads. AB is 1 foot and has a area of .5 in^2 and BC is 1 foot and has an area of .3 in^2. AB has a 1000lb force putting it under tension and BC has a 500lb force putting it under compression
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