Computer chip (5 mm squared) is operated at 85c and is cooled by forced air at 27c, which offers a heat transfer coefficient of 200 w/m2-k. with emissivity of the chip surface being 0.9 and the constant temperature of the computer case enclosing the chip being 15c, determine (a) the rate of heat transfer from the chip by convection (qconvection), (b) the rate of heat transfer from the computer chip by radiation (qradiation), and (c) the ratio qradiation/qconvection

Which changes of state do the labels represent? a: b: c:

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.