A furnace with an aperture of 20-mm diameter and emissive power of 3.72 105 W/m2 is used to calibrate a heat flux gage having a sensitive area of 1.6 105 m2 . (a) At what distance, measured along a normal from the aperture, should the gage be positioned to receive irradiation of 1000 W/m2 ? (b) If the gage is tilted off normal by 20 , what will be its irradiation? (c) For tilt angles of 0, 20, and 60 , plot the gage irradiation as a function of the separation distance for values ranging from 100 to 300 mm.
IT 100 (10/410/6) A. Storage & Databases a. Primary Storage (temporary storage)loses content when computer loses power. i. Volatile Storage ii. Temporary iii. Refers to random access memory (RAM) b. Secondary Storage (permanent storage) permanently saves info for future use. i. Nonvolatile storage stores programs & data as opposed to temporary RAM. ii. Characteristics 1. Media or medium what holds data 2. Capacity amount of storage held 3. Storage devices hardware that reads data 4. Access speed measures amount