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A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time. Round to the nearest hundredth, if necessary.Less than 460 hours

Determine the y-component (cm) of the centroid of area as measured from the bottom edge of the rectangle.  The dimension A = [x].  All dimensions are cm.  Enter your answer to 2 decimal places.  

Two stars of masses and are separated by a distance Determine the distance (measured from ) to a point at which the net gravitational force on a third mass would be zero.

Which of the following statements about promoter structure are TRUE? Multiple answers are possible!

Truss ABCD is simply supported at joints A and C.  Force F = [z] N and acts downward at joint D.  Length AB = BC = [x]m and length BD = [y]m.  Determine the magnitude of the force (N) acting in member AB.  Enter your answer to 1 decimal place.

Histones are proteins that ______________________________________.

What can be performed to assess the degree of airway reversibility?

A respiratory therapist is about to perform spirometry on a patient with kyphoscoliosis. How should the respiratory therapist estimate the patient’s height?

Determine the sequence of the following nucleic acid! For a nucleic acid based on deoxyribose (DNA), enter the sequence according to this example:   d(ACTG) For a nucleic acid based on ribose (RNA), enter the sequence according to this example:   ACUG Do NOT add any spaces or characters in between bases or parentheses!

Which of the following lung defects reduce the DLCO? I.     Emphysema II.    Asthma III.   Pulmonary Embolus IV.   Pulmonary Fibrosis V.    COPD