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Anton [14]
4 years ago
9

The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that prod

uces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.
Which food chain correctly describes the flow of energy in an ecosystem?

A) grass → grasshopper → fish → human
B) grasshopper → fish → human
C) human → fish → grasshopper
D) human → grasshopper → fish → grass
Physics
1 answer:
iogann1982 [59]4 years ago
3 0

Answer:

A.)

Explanation:

The answer is food chain A, as plants produce their own food using photosynthesis, therefore making them producers.  

A grasshopper then eats this grass, making it a consumer as it is obtaining its energy from the producer.  It is then eaten by a fish and a human.  This chain accurately describe the flow of energy in an ecosystem, as it goes, producer, consumer, consumer, consumer

Hope this helps a little

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April and Alex are saving money to buy new phones. Each friend starts with some money and saves a specific amount each week.
qwelly [4]
First thing to note is that we are on week 0, when they start saving:

The equation for Alex is:

y=20x + 125 

Know that we are on week 0, and x is our weeks, that makes our equation:

y=20(0) + 125 

Which means it's really:

y=125

That means that the first one is E. 125

For the second, it shows our week 0, which is at 100.

That means that the second one is I. 100

Hope this helps!
5 0
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Give definition of measurement ​
pshichka [43]

Answer: A time span or amount of something

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Despite a very strong wind, a tennis player
Gnoma [55]

Answer:

Option 5. 1 and 3

Solution:

The only forces acting on the tennis ball after it has left contact with the racquet and the instant before it touches the ground are the force of gravity in the downward direction and the force by the air exerted on the ball.

The ball after it left follows the path of trajectory and as it moves forward in the horizontal direction the force of the air acts on it.

In the whole projectile motion of the ball, the acceleration due to gravity acts on the ball thus the force of gravity acts on the ball in the downward direction  before it hits the ground.

6 0
4 years ago
A 77.0 kg woman slides down a 42.6 m long waterslide inclined at 42.3. at the bottom, she is moving 20.3 m/s.how much work did f
svlad2 [7]

Answer:

W = 21409.2 J

Explanation:

Given,

The mass of the woman, m = 77 Kg

The length of the water slide, S = 42.6 m

The inclination of the water slide, ∅ = 42.3

The constant velocity of the women sliding, 20.3 m/s

The kinetic friction of the sliding force is given by the formula

                               Fₓ = μₓ η

Where,

                    μₓ - coefficient of kinetic friction

                     η - normal force acting on the body

Since the water slide is inclined at an angle and the person is sliding with constant velocity. The coefficient of friction becomes,

                     μₓ = tan∅

And,                η = mg cos∅

Therefore, the kinetic friction force becomes

                          Fₓ =  tan∅  mg cos∅

Substituting the given values in the above equation

                           Fₓ = 0.9 x 77 x 9.8 x 0,74

                               = 502.56 N

The work done by the kinetic friction on the person

                            W = Fₓ · S    

                                = 502.56 N x 42.6 m

                                = 21409.2 J

Hence, the work done by the friction on the woman is, W = 21409.2 J

8 0
3 years ago
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