Once the crate in sample problem d is in motion, a horizontal force of 53 n keeps the crate moving with constant velocity find the coefficient of kinetic friction between the crate and the floor

Thank you for posting your question here at . Below is the solution. I hope it helps. 

m=24 kg, Ff=53 N, g=9.8 m/s^2,
use the formula Fg = mg,   Fg=24*9.8,
solve for Fg, Fg=235.2 N,
then use the formula Ff = ตkFn, 53=235.2ตk,
solve for ตk, ตk=.23

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling