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Mumz [18]
3 years ago
14

Why is it important for scientists to replicate each other’s experiments?

Physics
2 answers:
saul85 [17]3 years ago
5 0
It is very important for scientists to replicate each other experiment because this will help to determine if important scientific results are repeatable. The correct option is Scientific results presented by a scientist should be reproducible anywhere in the world, without this, the results can not be accepted as theory.

alexgriva [62]3 years ago
4 0

Answer:

A. To determine if the scientific results are repeatable

Explanation:

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A person starts at the origin and then walks 6 m to the west, and then 8 m south.
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Explanation:

Let the east direction to be i^ and north direction be j^.

Thus displacement of the man   S=8i^+6j^

So, magnitude of displacement  ∣S∣=62+82=100=10 m

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A paleontologist measures the ratio of carbon-14 to carbon-12 in a fossil skull found at a site. What technique is he using and
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Calculate the mass 9f the earth, assuring that uts is sphere with radius 6.67×10^6m.​
MA_775_DIABLO [31]

Answer:

6.86 × 10²⁴ kg

Explanation:

The mass of the earth m = density of earth, ρ × volume of earth, V

m = ρV

The density of the earth, ρ = 5515 kg/m³ and since the earth is a sphere, its volume is the volume of a sphere V = 4πr³/3 where r = radius of the earth = 6.67 × 10⁶ m

Since m = ρV

m = ρ4πr³/3

So, substituting the values of the variables into the equation for the mass of the earth, m, we have

m = 5515 kg/m³ × 4π(6.67 × 10⁶ m)³/3

m = 5515 kg/m³ × 4π × 296.741 × 10¹⁸ m³/3

m = 5515 kg/m³ × 1189.9639π × 10¹⁸ m³/3

m = 6546105.64378π × 10¹⁸ kg/3

m = 20565197.400122 × 10¹⁸ kg/3

m = 6855065.8 × 10¹⁸ kg

m = 6.8550658 × 10²⁴ kg

m ≅ 6.86 × 10²⁴ kg

8 0
3 years ago
The amount by which a machine multiplies input force is known as
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Mechanical advantage is the amount by which a machine multiplies input force. It is a measure of the force amplification using a tool or machine system. 
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You walk into a room and you see 4 chickens on a bed 2 cows on the floor and 2 cats in a chair. How many legs are on the ground?
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Answer:

18

Explanation:

I'm pretty sure I got it right

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3 years ago
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