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Serggg [28]
2 years ago
11

What is an ecosystem? Need answer asap

Physics
1 answer:
Evgesh-ka [11]2 years ago
7 0

Answer:

it’s the second one

Explanation:

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Fossil fuels like gasoline or coal are examples of
disa [49]

Answer:

Nonrenewable Resources

8 0
3 years ago
The periodic table is an arrangment of the chemical elements, ordered by atomic number, into families, and by doing so illustrat
Gala2k [10]

Answer:

Solid at room temperature

Explanation

Since these elements are metals they must be said at room temperature

6 0
3 years ago
Polar molecules have ionic bonds.<br> True<br> False
Nadusha1986 [10]
Polar molecules do have ionic bonds
6 0
3 years ago
The initial speed of a body is 7.1 m/s. What is its speed after 2.23 s if it accelerates uniformly at 2.64 m/s 2 ? Answer in uni
Nana76 [90]

13.0m/s

1.2m/s

Explanation:

Given parameters:

Initial speed of the body = 7.1m/s

time taken = 2.23s

Acceleration = 2.64m/s²

Unknown:

Final speed = ?

Solution:

Acceleration is the rate of change of velocity with time.

   a = \frac{V - U}{T}

a  = acceleration

V = final speed

U = initial speed

T = time taken

  Input the variables and solve for V;

 

   2.64 = \frac{V - 7.1}{2.23}  

  V - 7.1 = 5.9                              expression 1

  V = 5.9 + 7.1 = 13.0m/s

B

Using the same parameters, the speed after a uniform deceleration of -2.64m/s², the negative sign implies deceleration;

 from expression 1;

           V - 7.1  = -5.9

           V = -5.9 + 7.1 = 1.2m/s

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

5 0
3 years ago
1. A 4-N force is used to move an object 2 m in 10 s. Which of the following is the power generated while moving the object?
guajiro [1.7K]

Power is the work done per unit time. Therefore,

\begin{gathered} p=\frac{w}{t} \\ \text{where} \\ w=\text{work done} \\ t=\text{time} \end{gathered}

Therefore,

\begin{gathered} \text{work done=fd} \\ f=force=4N \\ d=\text{displacement}=2m \\ t=2\sec s \\ p=\frac{fd}{t}=\frac{4\times2}{10}=\frac{8}{10}=0.8watts \end{gathered}

4 0
1 year ago
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