The brick wall (of thermal conductivity

1.16 W/m ° C) of a building has dimensions

of 5 m by 7 m and is 18 cm thick.

How much heat flows through the wall in

a 17.2 h period when the average inside and

outside temperatures are, respectively, 24°C

and 8°C?

Answer in units of MJ.

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?