hewwo everyone, im 4 and i have outer space stickers

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?

What is a monomer? how do they form a ploymer from the view point of chemical bonding?