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Find the mass of air in a closed chamber measuring 35 ft by 20 ft by 10 ft, when the pressure is 17 lb/in^2 and the temperature is 75°F, assuming air to be an ideal gas
Assuming steam to be an ideal gas, calculate its specific volume and density at a pressure of 90 lb/in^2 and a temperature of 650°F.
water from a reservoir is being supplied to a powerhouse that is located at an elevation 935 ft below that of the reservoir surface. Discharging through a nozzle, the water has a jet velocity of 240
Offshore in deep water, a wave gage measures the height and period of a train of waves to be 2m and 7.5 s respectively. The wave train propagates toward the shore in a normal direction without refra
The motion of a particle is defined as x=t^2-8t+7 and y=0.5t^2+2t+4, where x and y are in meters and t is in seconds. Determine the magnitude of the smallest velocity reached by the particle, and th
What is the runoff coefficient in a basin located near the middle of the climatic spectrum, with annual precipitation P = 32 in, ecosystem evapotranspiration ET = 22 in, and baseflow U = 3 in
Over a 100-mi^2 surface area, the average level of the water table for an unconfined aquifer has dropped 10 ft due to the removal of 128000 acre*ft of water from the aquifer. Determine the storage c
When you allow a can of carbonated beverage to sit open so that the carbon dioxide is released to the air, does the pH of beverage remain the same, increase, or decrease Why
Consider tetrachloroethene (PCE) in water. The vapor pressure of PCE is 0.0251atm. Henry's constant for PCE at 25°C is 26.9 atm-L/mol. Estimate the aqueous concentration of PCE in water at equil
A separatist Droid Army bettlestation is damaged during an intense battle over Coruscant, and it begins to fall towards to planet with an acceleration of s' = -gR^2/s^2 where s is the bettlestation'
The position of a particle P moving in the horizental plane is described by r(t)= (5t^2 i +2te^0.1t j) m. Find the magnitude of the particle's position, velocity, and acceleration at time t=2 sec.
make an inline function g(x)= x+ cos(x^5). plot it using vectors x= -5:.1:5; and y= g(x);. what is wrong with this graph. find a way to make it look more like the graph of g(x) should turn in both p
A particle which moves with curvilinear motion has coordinates in meters which vary with time t in seconds according to x = 3.3t2 + 3.1t - 5.3 and y = 5.1t - 4.0. Determine the coordinates of the ce
A separate hopper-bottomed grit storage tank has a usable volume of 3 cubic yards. Compute the detention time in the aerated unit and the estimated length of time required to fill the storage tank w
The two cylinder containers are joined by bolting their flanges together. How many 1-inch diameter steel bolts are required to hold the cylinders together when the assembly is subjected to an interna
A car is traveling at 30 mph on a good, dry pavement at sea level. The front-wheel-drive car has a drag coefficient of 0.35, a frontal area of 30 ft2 and a weight of 2500 lbs. The wheelbase is 120 i
A 3000 lb vehicle has a drag coefficient of 0.32 and a frontal area of 30 ft2. What is the minimum tractive effort required for this vehicle to maintain a 65 mph speed on a 2% upgrade through an air
An aluminum link is subjected to axial tension. The loading is limited by the conditions of not yielding and not elongating excessively. The yield limit is satisfied if the stress remains below 50%o
A barge measures 10 ft (depth) by 35 ft by 120 ft and weighs 100 U.S. tons. The barge floats in fresh water (specific weight = 62.4 lb/ft3) and is evenly filled with 38,000 bushels of corn (60 lb/bu
A train moving at 100 km/hr decreases its speed to 80 km/hr in 3.5 seconds. How far, in meters, did the train travel during this time
a circular aluminum tube of L=600 mm is loaded in compression by forces P. The outside and inside diameters are d2=75 mm and d1=63mm, respectively. A strain Gage is placed on the outside of the tube
An equal-tangent crest vertical curve connects a +3.2% and -1.1% grade. The PVI is at station 98+20. Due to drainage considerations, the highest point of the curve is at station 100+79.35.
calculate the density and specific weight of carbon dioxide at a pressure of 300 kN/m^2 absolute and 60º C
What is the smallest particle size (density 2.65 g/cm3) that will be removed in a horizontal grit chamber 10 m long and 1.0 m deep if the flow rate is 1000 m3/hr. Assume the temperature of the water
Water at 20ºC flows at a velocity of 2 m/s in a 200-mm diameter horizontal ductile-iron pipe. a) Estimate the friction factor in the pipe, and state whether the pipe is hydraulically smooth or