Which of the following is not required by OSHA on the label of all laser safety glasses?
A) Weight of the wavelengths B) Visible light transmission
C) Laser wavelength the glasses are for D) Density of wavelengths
A
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What are the three main components of a programmable logic controller (PLC)?
What will be an ideal response?
Pollution control equipment for a pulverized coal cyclone furnace is estimated to cost $190,000 two years from now and an additional $120,000 four years from now. If Monongahela Power wants to set aside enough money now to cover these future costs, how much must be invested at an interest rate of 8% per year, compounded semiannually?
What will be an ideal response?
To get the AW of a cash flow of $10,000 that occurs every 10 years forever, with the first one occurring now, it is correct to:
(a) multiply the $10,000 by (A?P,i,10 ) (b) multiply the $10,000 by (A?F,i,10 ) (c) multiply the $10,000 by i (d) multiply the $10,000 by (A?F,i,n) and then multiply by i
Average height of 10 trees planted on reclaimed, mined-over land
Growth factor added Nothing added 100 kg/ha N 50 kg/ha P 2 cm/wk water no lime 56 45 63 50 lime added 85 170 58 62 Consider the data in the accompanying table giving the average height of 10 trees planted in order to revegetate a disturbed soil. What was the first limiting factor for tree growth on this soil? A) soil pH B) nitrogen C) phosphorus D) water