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Doss [256]
2 years ago
11

""When we were discussing thermodynamics the other day, Dave didn't say anything. That must mean he doesn't know anything about

the topic." What would be the most useful question to debunk this claim?"
Physics
1 answer:
Alinara [238K]2 years ago
5 0

Answer

the most useful question to debunk this claim is

Could there be another reason why Dave remained quiet?

Explanation:

Because its possible Dave could have known something but he choose to be quite because of another reason, as thus will debunk that he knows nothing about the topic

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Consider the two moving boxcars in Example 5. Car 1 has a mass of m1 = 65000 kg and a velocity of v01 = +0.80 m/s. Car 2 has a m
Amiraneli [1.4K]

Answer:

1.034m/s

Explanation:

We define the two moments to develop the problem. The first before the collision will be determined by the center of velocity mass, while the second by the momentum preservation. Our values are given by,

m_1 = 65000kg\\v_1 = 0.8m/s\\m_2 = 92000kg\\v_2 = 1.2m/s

<em>Part A)</em> We apply the center of mass for velocity in this case, the equation is given by,

V_{cm} = \frac{m_1v_1+m_2v_2}{m_1+m_2}

Substituting,

V_{cm} = \frac{(65000*0.8)+(92000*1.2)}{92000+65000}

V_{cm} = 1.034m/s

Part B)

For the Part B we need to apply conserving momentum equation, this formula is given by,

m_1v_1+m_2v_2 = (m_1+m_2)v_f

Where here v_f is the velocity after the collision.

v_f = \frac{m_1v_1+m_2v_2}{m_1+m_2}

v_f = \frac{(65000*0.8)+(92000*1.2)}{92000+65000}

v_f = 1.034m/s

8 0
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A ball is fired at an angle of 45 degrees, the angle that yields the maximum range in the absence of air resistance. What is the
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Look at the picture for the answer

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The potential energy of a 40 kg cannon ball is 14000 J. How high was the cannon ball to have this much potential energy?
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The formula for potential energy is PE=mgh
It can have that high of a potential energy if it's relative height what super high.
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Answer:

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in which sealed container would the organisms be able to continuously cycle o2 and co2 gases? a. a jar with a lizard eating a sn
DerKrebs [107]

Correct answer choice is :


C) A jar with snails crawling on living plants


Explanation:


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