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hichkok12 [17]
3 years ago
15

Two streams merge to form a river. One stream has a width of 8.4 m, depth of 3.5 m, and current speed of 2.2 m/s. The other stre

am is 6.6 m wide and 3.6 m deep, and flows at 2.7 m/s. If the river has width 11.2 m and speed 2.8 m/s, what is its depth
Physics
1 answer:
hoa [83]3 years ago
6 0

Answer:

Explanation:

We shall solve this problem on the basis of pinciple that water is incompressible so volume of flow will be equal at every point .

rate of volume flow of one stream

= cross sectional area x velocity

= 8.4 x 3.5 x 2.2 = 64.68 m³ /s

rate of volume flow of other stream

= 6.6 x 3.6 x 2.7

= 64.15 m³ /s

rate of volume flow of rive , if d be its depth

= 11.2 x d x 2.8

= 31.36 d

volume flow of river = Total of volume flow rate of two streams

31.36 d  = 64.15 + 64.68

31.36 d  = 128.83

d = 4.10 m /s .

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Answer:

Explanation:

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x be the position of the wave

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The relation between the time period and the frequency is

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A golf ball is released from rest from the top of a very tall building. Choose a coordinate system whose origin is at the starti
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Answer:

Velocity of the ball after 3.04 (s) = 29.79 (m/s)

Explanation:

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3 years ago
Read 2 more answers
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Answer:

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Part c)

P = 672 Watt

Part d)

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Part e)

P_r = 345 Watt

Explanation:

Part a)

When battery is in charging mode

then the potential difference at the terminal of the cell is more than its EMF and it is given as

\Delta V = E + i r

here we have

E = 12 V

i = 56 A

r = 0.11

now we have

\Delta V = 12 + (0.11)(56) = 18.16 V

Part b)

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P_r = i^2 r

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Part e)

now the rate of energy dissipation is given as

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P_r = 345 W

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