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NikAS [45]
4 years ago
13

Conclusion: Medicine A is an effective treatment for the common cold. A study was conducted to test the effectiveness of Medicin

e A. Which question would help in determining whether the conclusion above is valid? A. How many people in the study had the flu? B. How many people were included in the study? C. What was the average age of the people in the study? D. What was the most common occupation of people in the study?
Physics
1 answer:
Lerok [7]4 years ago
7 0
B. How many people were included in the study.
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If you are designing a force multiplying system with two pneumatic cylinders. Your system should increase the force by a multipl
Tomtit [17]

Answer:

decrease the area in the second cylinder

Explanation:

In a two-cylinders pneumatic system, the pressure exerted on the first cylinder is equal to the pressure on the second cylinder:

p_1 = p_2

We can rewrite the pressure as product between force (F) and area (A) of the cylinder:

F_1 A_1 = F_2 A_2

In this system, the output force should be 4 times the input force:

F_2 = 4 F_1

Substituting into the previous equation, we get:

F_1 A_1 = 4 F_1 A_2\\A_2 = \frac{A_1}{4}

This means that the area of the second cylinder must be 1/4 of the area of the first cylinder, so the correct answer is

decrease the area in the second cylinder

8 0
3 years ago
How does friction affect basketball ad what is an example?
kaheart [24]
It affects basketball in a way called traction. The friction between the players' basketball shoes and the hard wooden floor is traction, or friction. Without it, players would slide everywhere and wouldn't be able to play the game.
5 0
4 years ago
A treasure map instructs you to walk (25.0+A) m south, followed by (18.0+B) m east, then 64.5 m north, and finally 28.5 m east.
adelina 88 [10]

Answer:

Explanation:

Check attachment for solutions

3 0
3 years ago
What is the significance of the direction of an electric field line at some point on the line?
Lemur [1.5K]

Answer with Explanation:

The direction of the electric field line at any point gives us the direction of the electric force that will act on a positive charge if placed at the point. We know that if we place a charge in an electric field it will experience a force, as we know that force is a vector quantity hence it requires both magnitude and direction for it's complete description. The direction of this electric force that acts on a charge is given by the direction of the electric field in the space. In case the charge is negatively charged electric force will act on it in the direction opposite to the direction of electric field at the point.

7 0
4 years ago
It is the thermal energy transferred from a hot object to a cold object.
kakasveta [241]

It is the thermal energy transferred from a hot object to a cool object.

The following statement listed above is correct.

Answer: True.

6 0
4 years ago
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