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2 years ago

Summarize the step you might use to Carry out an investigation using scientific method

Physics

1 answer:

Aleksandr [31]2 years ago

3 0

The summary of the step you might use to carry out an investigation using scientific method include:

Observation
Hypothesis
Experiment
Conclusion

<h3>What is Scientific method?</h3>

This is defined as a systematic approach which helps to predict how several elements in the universe works.

This usually starts with observing a phenomenon and making a hypothesis. This is usually followed by conducting experiment to ascertain its authenticity before a conclusion is drawn.

Read more about Scientific method here brainly.com/question/17216882

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A train travels 4200 km in 90 hours. What is its speed?

denis23 [38]

Answer: I think its 120

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2 years ago

How many atoms are in a sample of 2.39 moles of neon (Ne) atoms?

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3 years ago

10. Which of these devices is also referred to as a'key'?

brilliants [131]

Answer:

Electric switch is commonly known as the key of an electric circuit.

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2 years ago

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A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 11.8 m/s directly upward.

Fantom [35]

Answer:

7.09683 m

1.20285 s

2.4057 s

11.8 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s² (negative up, positive down)

From equation of motion we have

$v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{0^2-11.8^2}{2\times -9.81}\\\Rightarrow s=7.09683\ m$

The maximum height above the ground that the ball reaches is 7.09683 m

$v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-11.8}{-9.81}\\\Rightarrow t=1.20285\ s$

Time taken to go up is 1.20285 s it will take the same time to come down so total time taken to reach the ground after it is shot is 1.20285+1.20285 = 2.4057 s

$v=u+at\\\Rightarrow v=0+9.81\times 1.20285\\\Rightarrow v=11.8\ m/s$

The velocity just before it hits the ground is 11.8 m/s

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2 years ago

Name three categories that are used to classify the elements in the periodic table?

nikitadnepr [17]

Answer:

metals,nonmetals, and inert gases

Explanation:

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3 years ago

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