A plane area has its centroid C at point (2 cm, 4 cm). If the area of the plane is 100 cm2 and the moment of inertia, Iy is 2000 cm4, what is the centroidal moment of inertia, (Iy)Ca. 800cm4b. 1000cm4c. 1200cm4 d. 1600cm4

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer