A 20.0-cm long pipe is covered at one end in order to create a closed-end air column. A vibrating tuning fork is held near its open end, forcing the air to vibrate in its first harmonic. The wavelength of the standing wave pattern is ____.

Answers

Answer 1

Answer:

Answer:

80 cm

Explanation:

the given condition is closed-end air column. The wavelength is four times the length of the air column for the standing wave pattern for the first harmonic.

The required wavelength of the standing wave pattern is

= $\lambda =4L\n\lambda=4 * 20\n\lambda=80 cm$

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If chris throws a baseball 60 meters in 4 seconds, what is the average speed of the football?

Answers

The average speed of the football is 15 meters per second. Just divide both of the numbers by 4 :)

Two objects with different masses collide and bounce back after an elastic collision. Before the collision, thetwo objects were moving at velocities equal in magnitude but opposite in direction. After the collision,
A. the less massive object had gained momentum.
B. the more massive object had gained momentum.
C. both objects had the same momentum.
D. both objects lost momentum.

Answers

The more massive object will lose momentum after collision while the less massive object will gain momentum after collision.

Let the mass of the first object = m₁
Let the mass of the second object = m₂
let the initial velocities of the two objects = u
let the final velocity of the first object after collision = v₁
Let the final velocity of the second object after collision = v₂

Apply theprinciple of conservation of linear momentum for elastic collision;

let the heavier object = m₁

m₁u + m₂(-u) = m₁(-v₁) + m₂v₂

m₁u - m₂u = -m₁v₁ + m₂v₂

where;

m₁u and m₂u are initial momentum of both objects before collision

m₁v₁ and m₂v₂ are final momentum of both objects after collision

Thus, from the equation above we can conclude the following, the more massive object will lose momentum after collision while the less massive object will gain momentum after collision.

Learn more here:brainly.com/question/11214803

Answer:A

Explanation:

Given

mass of two objects are $m_1$ and $m_2$

taking $m_1>m_2$

Suppose $u_1$ and $u_2$ are the velocities of $m_1$ and

$u_1=u$ and $u_2=-u$

therefore after elastic collision velocity of $m_1$ and $m_2/[tex] are [tex]v_1$ and $v_2$

$v_1=(m_1-m_2)/(m_1+m_2)\cdot u_1+(2m_2)/(m_1+m_2)\cdot u_2$

$v_2=(2m_1)/(m_1+m_2)\cdot u_1-(m_1-m_2)/(m_1+m_2)\cdot u_2$

for $u_1$ and $u_2$

$v_1=(m-m)/(m+m)\cdot u+(2m)/(m+m)\cdot (-u)$

$v_1=(m_1+m_2)/(m_1+m_2)\cdot u=u$

$v_2=(2m)/(m+m)\cdot u-(m-m)/(m+m)\cdot (-u)$

$v_2=(3m_1-m_2)/(m_1+m_2)\cdot u$

$v_2=u+2\cdot (m_1-m_2)/(m_1+m_2)\cdot u$

so velocity of mass $m_2$ is more as compared to $m_1$

so less massive object gained some momentum

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Answers

We can say this is proved because electrons are having negative charges. If they lie inside the nucleus, they will be neutralised by the positive charges. Thus, the atom will have no charged particle and unstable. But an atom has both positive and negative charges.

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Answers

Every fast-food chain is required by law to make the nutrition content of the
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My friend should walk into her favorite place, or into the nearest McRonald's,
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To be nice about it, she should do this at a time when the place is not too busy,
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doneright now.

Under the french fries, look at the serving size, and the figure for "Sodium"
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And there are organizations with official-sounding names that totally dispute
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But to answer your question, that's what she should do to learn the amount
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Answers

The forest ecosystem will regain back its natural ecology compared to burning of the forest and other illegal activities done to the forest. And also, some of the animals living in that forest will live and those that are endangered will not be threatened.

While researching machines and how they work, Tika finds several online sites that discuss how force and distance are related to work done by a machine.How should Tika most likely describe this relationship between force and distance to her study group?

If the input force is less than the output force, then the input distance must be greater than the output distance.
If the input force is greater than the output force, then the input distance must be greater than the output distance.
If the input force is less than the output force, then the input distance must be the same as the output distance.
If the input force is equal to the output force, then the input distance must be greater than the output distance.

Answers

The right answer for the question that is being asked and shown above is that: "If the input force is greater than the output force, then the input distance must be greater than the output distance." Tika most likely describe this relationship between force and distance to her study group is that If the input force is greater than the output force, then the input distance must be greater than the output distance.

Answer:

If the input force is less than the output force, then the input distance must be greater than the output distance.

Explanation:

I just took the test on E2020

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