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patriot [66]
3 years ago
6

Which statement best describes comparative and descriptive investigations? They both include a question, procedure and conclusio

n. They both include a hypothesis. They both require a specified control group. They both use independent and dependent variables.
Physics
2 answers:
9966 [12]3 years ago
8 0

Answer:

Hello,

The answer would be the first choice, "They both include a question, procedure and conclusion."

anyanavicka [17]3 years ago
5 0

Answer:

<h2>They both include a question, procedure and conclusion.</h2>

Explanation:

Both type of investigations include a question, procedure and conclusion. Actually, <em>these three elements are standard for any type of investigation.</em>

All investigation are developed based on a problematic situation which defines a question, that the investigator seek to answer. In the attempt of answering, he develop several procedure according to the methodology of the investigation, that is, a descriptive and comparative investigation have different procedures, to seek a similar purpose, to answer the question.

After developing all procedures needed according to the methodology, a conclusion is made, based on the facts from the procedure. This conclusion is the actual attempt to answer the question, having two possible outcomes, or the problem in the question is solved, or just the procedure and methodology couldn't do it that far.

En resume, those are elements of both type of investigation.

Therefore, the right answer is the first one.

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Assign a positive velocity to the red box and negative velocity to the blue box. Are they moving in opposite direction?
attashe74 [19]

Answer:

<em>Yes, they are moving in opposite direction one to the other.</em>

Explanation:

Velocity is a vector quantity, which means that it has both magnitude and direction. The magnitude shows the size of the velocity, and the direction shows which way it is moving in reference to a chosen reference direction. If the red box is assigned a positive velocity, and the blue box is assigned a negative velocity, as indicated in the question, then it means that the red box, and the blue box, both move in opposite direction to the other.

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3 years ago
A bus took 8 hours to travel 639 km. For the first 5 hours, it
vladimir1956 [14]

Answer:

93 km/h

Explanation:

Given that a bus took 8 hours to travel 639 km. For the first 5 hours, it travelled at an average speed of 72 km/h

Let the first 5 hours journey distance = F

From the formula of speed,

Speed = distance/time

Substitute speed and time

72 = F/5

F = 72 × 5 = 360 km

The remaining distance will be:

639 - 360 = 279km

The remaining time will be:

8 - 5 = 3 hours

Speed = 279/3

Speed = 93 km/h

Therefore, the average speed for the remaining time of the journey is equal to 93 km/h

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grandymaker [24]

Answer:

<em>1.Magnetic Force - Used in cranes to separate metal junk from junkyards.</em>

<em>2.Frictional Force- Helps us to walk.</em>

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3 years ago
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