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ASHA 777 [7]
3 years ago
15

The principle characteristic distinguishing marine and freshwater ecosystems is _______. a. temperature b. presence of corals c.

presence of fish d. dissolved salt
Physics
2 answers:
GalinKa [24]3 years ago
5 0
D.
hope this helps!!!

Shtirlitz [24]3 years ago
4 0
The answer would be dissolved salt.  Its the presence of saltwater in marine and the absence of it in freshwater that makes the big difference.
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a transmission-line cable, of length 3 km, consists of 19 strands of identical copper conductors, each 1.5 mm in diameter. becau
Ivan

the resistance of the cable is 582.9 ohms

we are given the length of the cable which is  3 km,  of  1.5 mm in, the diameter  and resistivity of copper which is 1.72 m

The formula  we are referring to for calculating the resistance of the  cable is

R = ρl/A.

As there are 19 strands of copper conductors, so the resistance will be

R = 19( ρl/A)

Here  ρ is the resisitivity =  1.72 , l is the length  = 3(1+0.05)*10³3= 3150 m

A=pie/4(1.5 x 10⁻³)^2 =1.766 x 10⁻⁶ =1.766 x 10^-6

Substituting the values in the formula  we  get

R = 19 ( 1.72*3150 )/1.766 x 10⁻⁶

 = 582.9 ohm

To know more about resistance refer to the linkhttps://brainly.com/question/14547003?referrer=searchResults.

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6 0
1 year ago
Soil can best be described as the
Rom4ik [11]
<span>The correct option is D. Soil can best be described as the loose covering of weathered rocks and decaying organic matter. There are different types of soil, the type of soil formed depends majorly on the type of parent rock from which the soil is formed and the amount of organic matter present in the soil.</span>
5 0
3 years ago
For a top player, a tennis ball may leave the racket on the serve with a speed of 55 m/s (about 120 mi/h). If the ball has a mas
inn [45]

Answer:

Yes is large enough

Explanation:

We need to apply the second Newton's Law to find the solution.

We know that,

F= ma

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a= \frac{v}{t}

Replacing the aceleration value in the equation force we have,

F= \frac{mv}{t}

Substituting our values we have,

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F=825N

The weight of the person is then,

W = mg

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<em>We can conclude that force on the ball is large to lift the ball</em>

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3 years ago
Answer it answer it answer it
scoray [572]

Answer: I believe the answer is C. Higher Volume.

Explanation: I apologize if I am incorrect.

4 0
3 years ago
A clinical psychologist is one type of pure basic research psychologist . True are false
adoni [48]

false. clinical deals with patients and treats the.

research looks at root causes which clinical applies

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