Answer:
The concentration of benzene in this contaminated lake would be 653549ng/L.
Explanation:
The concentration C of a contaminant over a body of water of volume V can be obtained as:
C=Mass contaminant / V
In this case, the volume of the body of water:

The mass of the contaminant (Benzene):

Therefore:

Engineers take periodic site measurements to verify the scale conveys true information
<h3>Site Measurements</h3>
measureants is the amount or extent of something ascertained through use of calibrated instrument called measuring instrument. When measurements are done on site it is called site measurements.
Engineers use the site measurements to scale their sketches hence to ensure the scale is always correct periodic measurements should be taken.
On-site measurements value and sketch measurement value gives the scale which is the ratio, should be maintained always
Read more on scale here: brainly.com/question/26467371
Answer:
The Voltag e Tester.
The Digital Multimeter.
The Non-Contact Voltage Tester.
Lineman's Pli ers.
A Quarter Inch Screwdriver.
Multi Wire Strip per and Cutting Tool.
Answer:
MRR = 1.984
Explanation:
Given that
Depth of cut ,d=0.105 in
Diameter D= 1 in
Speed V= 105 sfpm
feed f= 0.015 ipr
Now the metal removal rate given as
MRR= 12 f V d
d= depth of cut
V= Speed
f=Feed
MRR= Metal removal rate
By putting the values
MRR= 12 f V d
MRR = 12 x 0.015 x 105 x 0.105
MRR = 1.984
Therefore answer is -
1.944
The answer is E to increase the shear strength of the beam beyond that provided by the concrete