Recent content by fxacx

  1. F

    MHB What fraction of light do these glasses transmit

  2. F

    MHB What fraction of light do these glasses transmit

    Welders use a logarithmic scale to identify protective eyewear. The shade number n, is given by the equation n = 1 − 7logT/3 , where T is the fraction of visible light that glass transmits. a. What shade number should a welder use that only transmits ⅛ of the light entering the glass? b Viewing...
  3. F

    MHB Find Glass Thickness to Block 25% of Light in Sunglasses

    The intensity, I of light in lumens, passing through the glass of a pair of sunglasses is given by the equation I(x) = I0 (0.8)^x , where x is the thickness of the glass in millimetres and I0 is the intensity of light entering the glasses. How thick should the glass be so that it will block 25%...
  4. F

    MHB What is the average profit on producing and selling 40 items per day

    business has an average cost of AC(x)= 100x+2x/x and its average revene per day is AR(x)= 100x+3/x what is the average profit on producing and selling 40 items per day how many must we sell to get an average daily of $80?
Back
Top