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The cost Y in dollars per hour to produce electricity is Y = 12+ .3x+.27x2, where x is in megawatts. Revenue in dollars per hour from the sale of electricity is 15x-.2x2. Find the value of X that gi
The surfaces air temperature is 15 degree C. A parcel of air is released at the ground with a temperature of 25 degree C. Calculate the maximum mixing height, in m.
Calculate the percentage of the cans that is expected to be rejected on the basis of the given criterion. If the filling equipment is adjusted so that the average weight becomes 8.10 oz.
If an air parcel at the surface was heated to 65 degree F by solar radiation and accelerated vertically by buoyant forces, at what height would the parcel achieve neutral stability.
Calculate the heat emitted to the environment (Btu/sec), the coal feed rate (tons/day), the degree (%) of sulfur dioxide control needed to meet an emission standard of 0.15 lb SO2/million Btu of hea
Find the specific work of the turbine 2) Find the specific work of the pump 3) Fin the specific heat input to the boiler 4) Find the thermal efficiency of the cycle.
Determine the stress in AB and BC as well as the displacement of joint B. The two circular members are solid with E=200GPa.
A cylinder containing a mixture of 90% N2 and 10% C2H6, and a cylinder of pure N2. Determine the proportions in which the respective gases from each cylinder should be used.
If the average German's mouth is located 140 cm above the level of the nozzle, how much pressure must be applied to the bellows so that the column of beverage (density = 1 g/cm3) just reaches mouth
If there is no change in potential energy and the speed changes from rest to 32 ft/sec. What is the change in the internal energy of the system?
Knowing that at t=3 s slider block C has moved 57 mm to the right, determine (a) the velocity of slider block C at t=0, (b) the acceleration of A and C, (c) the change in position of block A after 5
Knowing that at the instant shown assembly A has a velocity of 9in./s and an acceleration of 15 in./s^2 both directed downward, determine (a) the velocity of block B, (b) the acceleration of block
The load to be applied to the chain is 9,000 lbs. Plot the reliability of the chain vs. the number of links comprising the chain, with the number of links varying from 1 to 1000.
If a particle's position is described by the polar coordinates r = ( 2 sin 2u) m and u = ( 4t) rad, where t is in seconds, determine the radial and tangential components of its velocity and acceler
A vapor in a cylinder is compressed frictionlessly from 20 to 60 psia in such a manner that pv=constant. The initial specific volume is 25.0 ft^3/lbm. Sketch the process on a pv diagram and calculat
If all transitions between these states and ground occurred, what energy gamma (cant type symbol)-rays would be observed?
If the velocity of the particle at x = 55 mm is 0.30 m/s, determine the velocity at x = 175 mm. y axis goes from 3.3 to 6.6.
This mixture is heated at constant pressure in a closed system from 120 KPa and 30 degrees C to 200 degrees C. Calculate the work produced during this heating, in kJ/kg.
If the max allowed normal acceleration is equal to 2g where g is the acceleration due to gravity, determine the tightest radius of curvature possible and the time needed to complete the turn.
Sketch three-dimensional views of the unit cell of a b.c.c. crystal, showing a (100) plane, a (110) plane, a (111) plane and a (210) plane.
The radius of the curvilinear path is 4 in. What is the magnitude of the acceleration of the particle at theta = 40°?
Determine the pressure difference (in psi) associated with this phenomenon if it occurs during at 100-ft elevation change.
If the true mean is really 20, what sample size must be used to ensure that the probability of type II error is no greater than 0.10? Assume that alpha = 0.05.
Test the hypothesis that the two process have identical fractions nonconforming. Use alpha =0.05. Construct a 90% confidence interval on the difference in fraction nonconforming between the two proc