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brilliants [131]
3 years ago
9

1.)Which of the following would be considered an ecosystem?

Physics
2 answers:
Olenka [21]3 years ago
7 0
The answer is "a desert of rocks, sand, hawks, snakes, and scorpions" so b
Masteriza [31]3 years ago
6 0
The answer to this question is B.) because it is a variety of biotic and abiotic factors interacting with each other.
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A mass m = 14 kg is pulled along a horizontal floor with NO friction for a distance d =5.7 m. Then the mass is pulled up an incl
frosja888 [35]

Answer:

W ≅ 292.97 J

Explanation:

1)What is the work done by tension before the block goes up the incline? (On the horizontal surface.)

Workdone by the tension before the block goes up the incline on the horizontal surface can be calculated using the expression;

W = (Fcosθ)d

Given that:

Tension of the force = 62 N

angle of incline θ =  34°

distance d =5.7 m.

Then;

W = 62 × cos(34) × 5.7

W = 353.4 cos(34)

W = 353.4 × 0.8290

W = 292.9686 J

W ≅ 292.97 J

Hence,  the work done by tension before the block goes up the incline = 292.97 J

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Answer:

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Explanation:

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A certain wave has a wavelength of 45.0 meters and a frequency of 9.00 Hz. What is the speed of the wave? 405 m/s 5.00 m/s 0.200
kirill115 [55]

Wave speed  =  (wavelength)  x  (frequency)

                   =   (45 meters)   x   (9 per second)

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