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A steel 'stay' of effective length 5m is fitted in between the walls of a ships refrigerated compartment when the temperature is 18 degrees centigrade.
Assume zero stress in the stay on completion of fitting. when the temperature falls to -10 degrees centigrade, the gap between the walls is reduced by 0.5mm.
Determine the stress in the 'stay' at this temperature.
Coefficient of linear expansion = 11 x 10^-6 per degrees centigrade.
Modulus of Elasticity = 210 GN m^-2
A parcel is lowered onto a conveyor belt that is moving at 4 m/s. If the coefficient of kinetic friction between the parcel and the belt is 0.25, calculate the time that it takes for the parcel to reach the speed of the belt.
Sodium Fluoride (NaF) exhibits ionic bonding due to the valance structures of sodium (Na)and fluorine(F) atoms.
.How does data screening differ from data cleaning?
Problem 1: A small city four transportation alternatives for a bus depot based on three criteria: architectural worth, cost and public opinion. The serviceable life of the depot is 40 years.
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