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madreJ [45]
2 years ago
6

When should scientific claims be questioned?

Physics
1 answer:
Kryger [21]2 years ago
4 0

Answer:

C) if they are based on a very small sample

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A device that uses electricity and magnetism to create motion is called a (motor magnet generator) . In a reverse process, a dev
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the answers are a. and c.

I hope I help you out!

6 0
3 years ago
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Luis wanted to know which of his 4 toy cars is the fastest. He conducted an experime and recorded his results in the table shown
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The dependent variable was the time and the independent variable was thecars
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3 years ago
An object travels with a constant speed in a circular path. The net force on the object is
Pepsi [2]

Answer:

toward the center

Explanation:

Before answering, let's remind the first two Newton Laws:

1) An object at rest tends to stay at rest and an object moving at constant velocity tends to continue its motion at constant velocity, unless acted upon a net force

2) An object acted upon a net force F experiences an acceleration a according to the equation

F=ma

where m is the mass of the object.

In this problem, we have an object travelling at constant speed in a circular path. The fact that the trajectory of the object is circular means that the direction of motion of the object is constantly changing: this means that its velocity is changing, so it has an acceleration. And therefore, a net force is acting on it. The force that keeps the object travelling in the circular path is called centripetal force, and it is directed towards the center of the circle (because it prevents the object from continuing its motion straight away).

So, the correct answer is

toward the center

8 0
2 years ago
What is the mass of an object if a force of 34 N produces an acceleration of 4.0 m/s squared​
mrs_skeptik [129]

Answer:

8.5 kg

Explanation:

F = ma

34 N = m(4.0m/s^2)

m = 8.5 kg

6 0
2 years ago
Which describes the formation of Horizon B?
Finger [1]

c-undergoes the most change

Explanation:

Horizon B is the layer in a soil profile that has undergone the most change.

A section through a typical soil reveals many of the different layers.

The rock layers are divided into sections which are called horizons.

 Horizon O is the organic matter

  Horizon A is the top soil

  Horizon B is the subsoil.

The subsoil of horizon B is the layer that undergoes the most change. It materials are constantly being leached away from this layer by chemical weathering. Some of the processes here accounts for it typical reddish brown color.

The rock layer here is rich in iron oxide and washed down minerals. It lacks significant amount of humus.

learn more:

Soil formation brainly.com/question/2473178

#learnwithBrainly

5 0
3 years ago
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