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PSYCHO15rus [73]
3 years ago
15

Two hemispherical shells of inner diameter 1m are joined together with 12 equally spaced bolts. If the interior pressure is rais

ed to 300kPa above atmospheric pressure, determine the tensile force in each bolt.
Engineering
1 answer:
aliina [53]3 years ago
6 0

Answer:

  F = 2,355 10⁵ N

Explanation:

The pressure is distributed throughout the sphere with the same value and is defined by

           P = F / A

           F = P A

Therefore, on each bolt there is an internal force and external force

      ∑ F = F_int - F_ext

      ∑ F = P_int A - P_atm A

      F = A (P_int - P_atm)

     P_int = 300 10³ + P_atm

     F = A 300 10³

The area of ​​the sphere layer is

    A = π r² = π/ 4 d²

    A = π / 4 1²

    A = 0.785 m2

   

    F = 0.785 (300 10³)

    F = 2,355 10⁵ N

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2 years ago
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3 years ago
A sample of sand weighs 490 g in stock and 475 in Oven Dry (OD) condition, respectively. If absorption capability of the sand is
Ivahew [28]

The weight of the specimen in SSD condition is 373.3 cc

<u>Explanation</u>:

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B = saturated surface test sample in air = 1048.9 g

C = apparent mass of saturated test sample in water = 975.6 g

apparent specific gravity = \frac{A}{A-C}

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Apparent specific gravity = 2.88

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G_{B}^{O D}=\frac{1034}{1048.9-675 \cdot 6}

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G_{B}^{S S D} = 2.80

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5 0
3 years ago
A transmission line (TL) of length L and conductance per unit length G' is connected to an ideal constant voltage generator V. T
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Answer:

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Now, as the question says, the load is reduced to half its original value, we can write:

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Dividing equations (1) and (2), we get,

P1 / (P1/2) = I1/ I2

I2 = I1 / 2\\

Hence, it is proved that the current in the transmission line will decrease by a factor of 2 when load is reduced to half.

7 0
3 years ago
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