Engineering, 21.08.2019 21:30 aryal191
Aprojectile in flight canties with it a more or less conical-shaped shock front. from physical reasoning it appears that at great distance from the projectile this shock wave becomes truly conical and changes in vclocity and density across the shock becomes vanishingly small. photographs of a bullet in light show that at a great distance from the bullet the lotal included angle of the conç is 50,30°. the pressure and lymperature of the undisturbed air ir 100.801 kpa and 22.78°c. respectively. calculate thç velocity of the bullet, and the mach number of the bullcl. relative lu the undisturbed air.
Answers: 1
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
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Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
Aprojectile in flight canties with it a more or less conical-shaped shock front. from physical reaso...
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