Q. The brick wall of a building has dimensions of by and is thick. How much heat ?ows through the wall a period when the average inside and outside temperatures are, in that order.
Q. A shell is fired from the ground with an initial speed of 1.58 x10^3 m/s at an initial angle of 51° to the horizontal.
(1) Neglecting air resistance, find the shell's horizontal range.
(2) Find the amount of time shell is in motion.