Chips of width l = 15 mm on a side are mounted to a substrate that is installed in an enclosure whose walls and air are maintained at a temperature of tsur =t=25c. the chips have an emissivity of 0.60 and amaximum allowable temperature of ts = 85 c. (a) if heat is rejected from the chips by radiation and natural convection, what is the maximum operating power of each chip? the convection coefficient depends on the chip-to-air temperature difference and may be approximated as h = c(ts – t) 1/4, where c = 4.2 w/m2 k 5/4 . (b) if a fan is used to maintain air flow through the enclosure and heat transfer is by forced convection, with h = 250 w/m2 k, what is the maximum operating power?

What is the greatest common factor of 8 and 36

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.