A classroom that has a 200-square meter floor area and a 3.5 meter-high ceiling. a) What is the volume of the room (in m^3). b) Assuming a room temperature of 20 deg C, what is the density of the air in the room? c) How many kilograms of air occupy the room? d) What is the weight of the air in Newtons (N)? e) What is the weight of the air in Pounds (lbs.)?

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.