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A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is 0.2 . Use work and energy principle to find velocity.
A material with a true stress strain curve? = 350 E0.25 MPa is used in wire drawing. Calculate the maximum reduction in cross sectional area per pass based on ideal conditions.
liquid water is cooled at a constant pressure of 200 kpa in a piston-cylinder device from a temperature of 110 degc to
Outside air at 1 bar, 5 °C and RH 70% is heated to 25 °C. The flow rate of air is 50 m 3/min. Find (a) the final relative humidity, (b) the rate of heat transfer (in kW) needed to heat up the air?
Air at 22 kPa, 220K and 250 m/s enters a turbojet engine in flight at an altitude of 10,000m. The diffusor slows the air down to a very low speed relative to its inlet. The pressure ratio across the compressor is 12. The turbine inlet temperature is ..
a rigid container is separated into 2 compartments by a very thin solid membrane. one side initially holds 2 m3 of air
air enters an adiabatic diffuser operating at steady state at 540 degrees r with a velocity of 600 fts and exits with a
a pipe tapers from a diameter of 0.5 m at the inlet to a diameter of 0.25 m at the outlet and turns by an angle of 45
water is boiled at 90 c by a horizontal brass heating element of diameter 7 mm. determine the surface temperature of
The kinematic viscosity and specific gravity of a liquid are 3.5*10^-4 and .79. What is the dynamic viscosity of the liquid in SI units also determine the acoustic velocity, assuming a bulk modulus of 1.06E9 Pascals
Describe the methods used. Show a simple schematics sketch of the joining method and briefly describe the process. Compare the advantages and disadvantages of each joining method.
a fossil-fuel steam power plant operates at about 50 of carnot thermal efficiency. it has been suggested that the air
a mass that weighs 8 lb stretches a spring 4 in. the mass is attached to a dashpot mechanism that has a damping
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