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It is pressurised internally until the outer layer (surface) has a hoop stress of 300 MPa. Calculate the pressure on the inside surface.
Determine the maximum stress and the direction of the plane on which the maximum stress occurs relative to the axis of the shaft.
The strut has a solid circular cross section and is 6 m long. The strut collapses under a load of 100 kN. Calculate the diameter of the strut. assume E = 200 GPa.
Fluids mechanics, I want the same tutor who did my last assignment (fluids mechanices) ...................................
The Carnot cycle is defined as having a certain specific first step, the isothermal expansion of a gas. Can a Carnot cycle start at step 2, the adiabatic expansion? Why?
The load bearing piston in a certain hydraulic has an area 50 times as large as the input piston. If the larger piston supports a load of 6000N, how large a force must be applied to the input system
A diesel engine performs 2090 J of mechanical work and discards 4125 J of heat each cycle. What is the thermal efficiency of the engine?
Fluids mechanics, Fluid mechanics boundary layer theory...................................................................
Tom kicks the ball with a speed of 5m/s horizontally and Jim kicks it back to Tom with a speed of 9m/s. If the contact time between Jim's foot and the ball is 0.003s, what is the average force betwee
You are trying to loosen a bolt from a piece of metal with a wrench but fail. What kind of wrench should you look for? one made out of wood or plastic.
A typical bacterial motor turning at a constant angular velocity has a radius of 1.28 10-8 m, and a tangential speed at the rim of 2.24 10-5 m/s. How long does it take the motor to make one revolu
If the efficiency of this engine is 58% of the efficiency of a Carnot engine, what is the ratio of the low temperature to the high temperature in the Carnot engine?
If excess energy is carried away from the plant by a river with a flow rate of 1.0 multiplied by 106 kg/s, what is the rise in temperature of the flowing water?
A 250 g , 23.0-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 2000 rpm in 4.50s?
The collectors deliver aeat at 70 degrees C and the engine releases heat to the surroundings at 35 degrees C. What is the maximum possible efficiency of this engine?
A Carnot engine operates between temperatures of 700K and 400K and does 150 J of work in each cycle. What is the efficiency? How much heat does it take from the higher remperature reservior in each cy
In each cycle of its operation, a refrigerator removes 17J of heat from the inside of the refrigerator and releases 40J of heat into the room. How much work per cycle is required to operate this
A heat engine operates in a Carnot cycle between72.0°C and345°C. It absorbs 21,600J of energy per cycle from the hot reservoir. The duration of each cycle is5.00s. What is the mechanical pow
Hi i need your help, hi i study in university in greece...i need your help until tomorrow for a mechanical draw.. I must draw the front view and right view and the down-view. The draw is below.. can
A student plays two notes on the piano keyboard simultaneously. The white key has a frequency of 352 Hz and the black key has a frequency of 373. What beat frequency will be measured by the student?
In a railroad switchyard, a 50 ton freight car is sent at 7.4 mi/h toward a 27 ton car that is moving in the same direction at 2.0 mi/h.
A soap bubble with walls 398 thick floats in air. If this bubble is illuminated perpendicularly with sunlight, what wavelength of visible light will be absent in the reflected light? Assume that the
A circular coil having 19 turns and a radius of R = 17.6cm carries a current of 3.80A. It is placed in a uniform magnetic field of 80.0mT. The initial angle between the plane of the coil and the ma
In an EM wave traveling north the E field oscillates vertically and has a frequency of 85.0 kHz and an rms strength of 3.95 V/m. What are the frequency and rms strength of the magnetic field?
A 517-kg cannon fires a 16.5-kg projectile with a speed of 265 m/s with respect to the muzzle. The cannon is on wheels and can recoil with negligible friction. Just after the cannon fires the projec