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Gelneren [198K]
3 years ago
6

At a pressure 41 kPa, the gas in a cylinder has a volume of 16 liters. Assuming temperature remains the same, if the volume of t

he gas is decreased to 4 liters, what is the new pressure
Mathematics
1 answer:
DiKsa [7]3 years ago
6 0
If temperature (T) and amount of gas (n) remain constant, but pressure (P) and volume (V) change, then the ideal gas law: PV = nRT becomes
P1V1 = P2V2 --> (41)(16) = P2 (4)
--> P2 (4) = 656
P2 = 656/4 = 164 kPa
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DUPLICATE. WITH ATTACHMENTS
Inessa05 [86]
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Area of given pyramid = 4^2 + (2 x 4 x 7) = 16 + 56 = 72 ft^2

8.) Area of the given pyramid is the area of the hexagonal base plus the area of the six slant triangles.
Area of hexagonal base = (3sqrt(3))/2 x 10^2 = 150 x 1.732 = 259.8
Area of the 6 traingles = 6(1/2 x 10 x 13) = 6 x 65 = 390
Total surface area of the pyramid = 259.8 + 390 = 649.8 ≈ 650 m^2

9.) Using pythagoras rule, the slant height is sqrt(6^2 + 3.5^2) = sqrt(36 + 12.25) = sqrt(48.25) = 6.9 mm

10.) The surface area of a cone is given by πr^2 + πrl
Area = π x 6^2 + π x 6 x 20 = 36π + 120π = 490.1 cm^2

11.) l = sqrt(r^2 + h^2) = sqrt(11^2 + 16^2) = sqrt(121 + 256) = sqrt(377) = 19m
6 0
2 years ago
Hey pls help !!! worth 25 points
amm1812

Start with the point-slope form: y-y_1 = m(x-x_1).

Then you substitue in the slope and coordinates from the point:

    y-5 = 2(x-(-7))

You don't do a lot of clean up to the form, with the exception of turning "minus negative 7" into "plus 7".

    y-5 = 2(x+7)

Thar be yer answer!

5 0
2 years ago
What is the solution to this system of linear equations?
GarryVolchara [31]

Answer:

I got (1,2).

Step-by-step explanation:

Process of elimination:

Multiply the second equation by 3 to get same terms, subtract and solve for Y to get 2.

Plug 2 into second equation for Y to get x=1

(1,2)

6 0
2 years ago
Plz help. pl and thank u
Verizon [17]

Answer: sorry i cant read it its to small

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Point V is on line segment UW. Given VW = 6 and UV = 14, determine the<br> length UW
SpyIntel [72]

Answer:  The length is 20.

Step-by-step explanation:

If UW is the line segment, then the length of VW and UV has to equal to the length of UW

VW = 6

UV  = 14

6 + 14 = 20

6 0
3 years ago
Read 2 more answers
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