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lisabon 2012 [21]
2 years ago
5

a train travels 72 kilometers in 3 hours and then 54 kilometers in 4 hours what is the average speed​

Physics
1 answer:
suter [353]2 years ago
3 0

Answer:

idk

Explanation:

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Which of the following best represents a decomposition reaction?
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Answer: AB-> A+B

Explanation:

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3 years ago
You're holding an open house for Brenda. Walt and Mary walk in and ask you for a flyer that gives details about the property. At
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8 0
1 year ago
In a research facility, a person lies on a horizontal platform which floats on a film of air. When the person's heart beats, it
anastassius [24]

Answer: 3.48g

Explanation:

here, we will be using conservation of momentum to solve the problem. i.e the total momentum remains unchanged, unless an external force acts on the system. We'll in thus question, there is no external force acting in the system.

Remember, momentum = mass * velocity, then

mass of blood * velocity of blood = combined mass of subject and pallet * velocity of subject and pallet

Velocity of blood = 56.5cm = 0.565m

mass of blood * 0.565 = 54kg * (0.000063/0.160)

mass of blood * 0.565 = 54 * 0.00039375

mass of blood * 0.565 = 0.001969

mass of blood = 0.00348kg

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7 0
3 years ago
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Find equivalent resistance between A and B​
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Answer:

In the picture

Explanation:

I hope that it's a clear solution and explanation, hope that helps.

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3 years ago
Consider a horizontal layer of the dam wall of thickness dx located a distance x above the reservoir floor. What is the magnitud
adoni [48]

Answer:

Explanation:

Attached is the solution

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