Consider a 3-m-high, 6-m-wide, and 0.3-m-thick brick wall whose thermal conductivity is k 5 0.8 W/m·K. On a certain day, the temperatures of the inner and the outer surfaces of the wall are measured to be 14°C and 2°C, respectively. Determine the rate of heat loss through the wall on that day.

What are the factors that affect the resistance of a wire?

If a balloon is taken outside on a very cold day, what will occur?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)