Express each of the following phasors in rectangular notation a) 25.95 / +60° b) 16.971 - - 45° c) 65/-_ 22.6° d) 701-_ 18.440​

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

Aplate of dimensions 3 m x 3 m is placed 0.37 mm apart from a fixed plate. the plate requires a force of 2n to move at speed of 45 cm/s. evaluate the viscosity of the fluid in between the plates

A75mm diameter shaft is supported in a journal bearing 75mm long with a diametral clearance of 0. 1mm. it supports a radial load of 1000 n and is lubricated with sae 50 oil at 70°c. find the friction torque and the power loss when the crankshaft rotates at 2900 rev/min.