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Determine if it is safe for a 225 lb worker to stand all the way to the right of the scissor jack with it fully extended.
Steam enters a nozzle at 400C and 800kpa with a velocity of 10m/s, and leaves at 300C and 200kPa while losing heat at a rate of 25kW, for an inlet area of 800cm^2.
When [theta=2/3*pi] rad, the angular velocity and angular acceleration of the circular plate are [theta_1=1.4 ] rad/s and [theta_2..=3.5] rad/s^2 respectively. Determine the magnitude of the velocit
Determine the present worth of series of annual deposits of 2000 during years 3 through 14 and a series of withdrawals of 1900 through 3 to 10. The interest rate is 4 %.
During the compression process the change in pressure varies linearly with volume and the gas can be consirdered ideal. Determine a) the initial and final volumes b) the work done by the piston during
Suppose it is known that the graph of the function y= ax^3+bx^2+cx+d passes through four points (xi,yi), i=1,2,3,4. Write a user-defined function that accepts these four points as input.
A 40 mph wind blowing past your house speeds up as it flows up over the roof, elev effects are negligible. Determine the pressure in the roof where speed is 60mph.
The atmospheric pressure is 100 kPa. Derive and plot the variation of pressure with radius from the center. Assume no elevation change.
Which component of the ideal regenerative Rankine cycle loses the greatest amount of work potential where the ideal regenerative Rankine cycle with an open feedwater heater uses water as the working
If the guy wire can support a maximum tensile force of 500lbs, and if the pole AC can support a maximum compressive force of 800lbs before buckling, determining the largest force P that can be suppo
The external surrounding air at 300 K has a convective coefficient of 25 w/m^2 K. Calculate the fin efficiency and the heat loss from the fin per 1.0 m of length.
Calculate the entropy change and entropy production for the hydrogen gas during the process, both in KJ/K, if the boundary temperature for the gas is the same as the gas temperature throughout the p
The shaft was known to be carrying a fluctuating bending moment of 1000 N-m. Estimate the amount of torsion the shaft was also carrying.
Paddle-wheel work is used to change the state. Determine the total entropy production for the process, in kJ/K.
Determine (a.) the equilibrium temperature, in kelvins, and (b.) the entropy production for the overall process, in KJ/K. Use CO and CO2 tabular data.
What is the corresponding angular frequency? (2) What is the corresponding frequency? Show steps involved.
What is the angular displacement and its unit respectively? If an angle displacement is 90 degree, what is the corresponding angle in radians?
One of the requirements for tennis balls to be used in an official competition is that, when dropped onto a rigid surface from a height of 100 in. Determine the range of coefficients of restitution
A piston cylinder holds 2 kg of refrigerant 134a at 320 kPa and a quality of .9 while the piston is resting on a stop (state 1). Determine the heat transfer durng the first process 1 to 2 in kJ.
Design the suspension of an automobile such that the maximum vertical acceleration felt by the driver in less than 2 g at all speeds between 40 and 50 mph while traveling on a road.
What is the work done by the water on the piston? For safety reasons, pressure vessels are usually tested with water pressure rather than with air pressure.
Find the stiffness of the isolator that is necessary to reduce the force transmitted to the floor to 6,000 N over the operating-speed range of the engine.
Determine (a) the time required for the flywheel to reduce its clockwise angular speed to 900 rev/min. (b) the time required for the flywheel to reverse its direction of rotation.
An electric motor weighing 700 lb and running at 1800 rpm is supported on four steel helical springs. Find the amplitude of vibration of the motor and the force transmitted through the springs to the