Which of the following would NOT be an enforcement responsibility of a local police officer?

If you are unsure about holding a piece of wood to be drilled, then you should always use a

alisha [4.7K]

C I took construction class

4 0

3 years ago

Light acoustical panels in fire rated assemblies generally:

umka2103 [35]

Answer:

a. Compromise the fire rating by one hour.

Explanation:

One hour fire rating is given to materials that can resist the fire exposure. The Acoustical panels controls reverberation and they are used for echo controls. The Fire rating is the passive fire protection which can resist standard fire. The test for fire rating also consider normal functioning of the material.

7 0

3 years ago

A horizontal 20-mm diameter tube is to carry a laminar flow of SAE 30 oil. What pressure drop. (p1-p2) is needed to produce a fl

notsponge [240]

Answer:

$P_1-P_2=795.18 Pa$

Explanation:

Given that diameter of tube= 20 mm

flow rate = 72 lt/hr

The properties of SAE 30 oil at 30°C

$\mu =155.31 mPa$

$\rho =872.5 \frac{kg}{m^3}$

We know that volume flow rate Q= AV

$2\times 10^{-5}=\dfrac{\pi}{4}\times{0.02^2}V$

V= 0.064 m/s

Now lets find Reynolds number to check the type of flow

$Re=\dfrac{\rho VD}{\mu }$

$Re=\dfrac{872.5\times 0.064\times0.020}{0.15531 }$

Re=7.18 So we can say that this is laminar flow and we know that pressure drop for laminar flow is given as

$P_1-P_2=\dfrac{32\mu VL}{d^2}$

Now by putting the values the pressure drop for per unit length

$P_1-P_2=\dfrac{32\times 0.15531\times 0.064 }{0.02^2}$

$P_1-P_2=795.18 Pa$

7 0

3 years ago

My computer only plays sound when I wear my headphones

allsm [11]

Answer:

so??

Explanation:

what's the question??

5 0

3 years ago

Read 2 more answers

List 10 uses for surveying in areas other than land surveying. Select all that apply. a. topographic surveying b. satellite surv

bazaltina [42]

Answer:

b. satellite surveying

c. aerial surveying

d. optical tooling

e. marketing surveying

f. control surveying

h. statistical surveying

i. telephone surveying

k. alignment surveying

l. mine surveying

m. solar surveying

Explanation:

A Survey is an act of examination of the features of a subject or material under consideration. Land surveying refers to the examination of the natural and man-made features of a piece of land using scientific and mathematical methods.

Land surveying finds application in construction where a survey is made on all the structures found in a constructed property. Topographic surveying deals with examining the natural and man-made feature of a piece of land. As-built survey as the name implies examines the features and location of a building during or recently after construction. These three are examples of land surveys.

5 0

3 years ago