Glycerin at 20 ° C fills the space between a hollow sleeve ofdiameter 12 cm and a fixed coaxial solid rod of diameter11.8 cm. The outer sleeve is rotated at 120 rev/min.Assuming no temperature change, estimate the torque required,in N · m per meter of rod length, to hold the innerrod fi xed.

I need the answer at 20 minute

a 4 Exercise 7 -Opening and closing a boiler door for b) Calculate retracting speed, retracting time, travel speed ratio and travel time ratio. ictin Characteristic data required for calculation: Piston surface area: Ap = 2.0 sq. cm Piston ring surface area: APR = 1.2 sq. cm Stroke length: = 200 mm S Pump delivery rate: = 2 l/min b Retracting speed Retracting time Travel speed ratio Travel time ratio

A silicon carbide ball with 5 mm in diameter has volume based CLTE (a,) of 8.1 x106/°C. If the ball is heated from 100 to 1750°F, calculate the increase in diameter. Convert first the temperature to °C. Note: (AV/V) = (V-V.)/Vo= av AT