• AN AIRPLANE PROPELLER WITH BLADES 2.00 M LONG IS
ROTATING AT 1150 RPM.
a) EXPRESS ITS ANGULAR SPEED IN RAD/S.
b) FIND ITS ANGULAR DISPLACEMENT IN 4.00 S.
c) FIND THE LINEAR SPEED (IN M/S) OF A POINT ON THE
END OF THE BLADE.
d) FIND THE LINEAR SPEED (IN M/S) OF A POINT 1.00 M
FROM THE END OF THE BLADE.
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Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference