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Knowing that the length of the cord is 3 feet and that the max allowable tension in the cord is 10-lb, determine (a)the max allowable speed, (b) the corresponding value of the angle theta.
At the end of a sunny stretch, the Glauber salt is all liquid at its 32 C melting point. If the weather then turns cloudy for a prolonged period, how long the Glauber salt stay at 32 C and thus keep
A solar hot-water system stagnates at 85 C under insolation of 740 W/m^2 and an ambient temperature of 17 C. Find its loss rare in W/m^2*C, assuming its glazing transmits 81 percent of the incident
A rigid container is separated into 2 compartments by a very thin solid membrane. Determine the following Draw the schematic and define the system used for analysis
If the energy of the system were to be changed this same amount by changing the kinetic energy, to what speed must the system be accelerated if it is initially at rest?
Calculate the maximum mass flow rate at the inlet condition that this compressor can handle without violating the second law of thermodynamics.
Seawater contains gold, too, at about 1 part per trillion by volume. (Gold has a specific gravity of 19.3, while seawater has a specific gravity of 1.03.) Calculate the tons of gold ore and of seawa
Write a MATLAB program that determines the probability of "4 of a kind" in a 5-poker draw. Don't use formula. Create a program that runs a simulation multiple times to determine the probability.
The isentropic efficiencies of turbine and compressor are 0.86 and 0.89 respectively . The unit is fitted with a heat exchanger of 70 % effectiveness. Sketch the cycle on a T-s diagram.
The chain and lever attached to the gate have negligible weight. Find the length of the chain such that the gate is just on the verge of opening when the water depth above the gate hinge is 10m.
The only question is the strength of the block in compression, how high could blocks be stacked if the limestone has a compressive strength of 4000 psi and a density of 135lb per cubic foot?
The density of atmospheric air is about 1.15 kg/m3,which we assume is constant. How large an absolute pressure will apilot encounter when flying 2000m above ground level, where thepressure is 101 k
Two lb of water vapor in a piston cylinder assembly is compressed at a constant pressure of of 250 lbf/in^2 from a volume of 6.88 ft^3 to a saturated vapor state.
Ethanol (C2H5OH) is burned with air in a SIE with a fuel-rich mixture. Consider MON = 89 and RON = 107 for this fuel. Determine Anti-knock index (AKI) and fuel sensitivity (FS) of this fuel.
Evaluate the thermal conductivity of copper and constantan at T300 K. Use kCh=19 W/mK and kA=l29 W/mK for the thermal conductivities of the chromel and alumel wires, respectively.
With a spring constant k=10 lb. /in. The spring is at its free length, i.e. x=0, with the block being held at the fluid surface. Calculate how far the block will sink into oil with specific gravity
Determine the largest allowable bending moment bending moment for a 1 meter wide section of the highway. Assume E=185 Gpa for steel and E=22 GPa for concrete.
Speculate on whether you would expect a mixture of AuAg3 to show a greater or lesser tendency toward ordering in this system and explain your rationale.
Refrigerant 134a enters a condenser operating at steady state at 70 lbf/in.2, 160F. Determine the volumetric flow rate of the entering cooling water, in gal/min.
Although you can't see it, the gasoline is rising in the tank at a rate of 4.3 inches per minute. What is the horizontal cross sectional area of your gas tank?
For your sink at home, the flow rate in is 5000 units/hr. Accumulation is 2500 units. What is the accumulation rate if the out flow is 60 units/min?
If the angular position of the slotted arm OA rotates ccw with constant angular velocity thetadot=1.5rads/s, determine the magnitudes of the velocity and acceleration of the pin P when theta = 60.
The system is returned to its initial state in a compression process with heat rejection requiring 1 MJ of work input. Is the cycle a power cycle? Quantify the cycle performance (use an appropriate
After a few minutes it is observed that the bit is hot. Discuss the direction and modes of heat flow in this situation. At what location is the temperature highest?
A stone of mass m is tied to one end of a string ans is rotated with constant angular vel. w. The length of the string is l. Find the value of torque exerted by the stone about the axis of the pers