Athick plate made of stainless steel is initially at a uniform temperature of 300 c. the surface is suddenly exposed to a coolant at 20 c with a convective surface coefficient of 110 w/m2⋅k. evaluate the temperature after 3 min of elapsed time
(a) at the surface
(b) a depth of 50 mm
work this problem both analytically and numerically.

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?

Boiling water is an example of physical change. true or false

What is the difference between mass density and weight density?