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A 2.50 kg mass is pushed againsta horizontal spring of force constant 25.0 N/cm on a frictionless air table. The spring is attached to the table top, and mass is not attached to the spring anyway. When the spring has been compressed enough to store 11.5 J of potential energy in it, the mass is suddenly released from rest. Find the greatest speed the mass reaches. When does th is occur?
determine: (a) the cutting time to complete the facing operation, (b) the cutting speeds and metal removal rates at the beginning and end of the cut.
pushing a book against the wall.you are holding a book against a vertical wall by pushing upwards with your hand. the
an expander receives 1 lbms air at 300 psia 540 r with an exit state of 60 psia 540 r. assume the process is reversible
a fossil-fuel steam power plant operates at about 50 of carnot thermal efficiency. it has been suggested that the air
air enters a 0.8 cm i.d tube at 20 degree c with an average velocity of 0.8 ms. the tube wall is kept at 40 degree c.
the decarburization of a steel can be carried out by placing the steel in a vacuum i.e. the carbon concentration is
steam at 500 kpa 300c is used to heat cold water at 15c to 75c for domestic hot water supply. how much steam per kg
An internally reversible heat engine has a thermal efficiency of 60 percent, with 600 kJ/cycle of heat transfer added at a temperature of 447 C. Calculate the heat-rejection temperature, in degrees Celsius, and the heat transfer rejected, in kJ/cycle..
question a 80 g frisbee is thrown from a point 0.71 m above the ground with a speed of 10 ms. when it has reached a
for a turning operations you have selected an hss tool and turning a hot rolled free machining steel bhn 300. your
A crane has a loading hook that is hanging in a steel wire. The allowable normal tensile stress in the wire gives an allowable force of 100,000 N. Estimate the safety factor that should be used.
2 kg of saturated vapour water and 8 kg of saturated vapour refrigerant-134a both at 100 kPa. Which substance will release more energy to completely condense the vapour? Explain
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