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4 years ago

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Use an energy method to derive the equation of motion of the system in Problem 1.112. First with the presence of the damper and

then without. (hint: your answer should match your equation of motion obtained from Newton’s second law).

1 answer:

aliya0001 [1]4 years ago

5 0

Answer and Explanation:

The answer is attached below

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two denominational motion is not always projectile motion. in two denominational motion that is not a projectile motion, _______

irga5000 [103]

Answer:

a projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.

Explanation:

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4 years ago

A book that weighs 20 N sits on a table. How big and in what direction does the force of gravity from the Earth act on the book?

taurus [48]

Answer:

A. 20 N down

Explanation:

It's asking how much force of gravity is acting on it. The book weighs 20 Newtons so that's how much gravity is being applied. Hope this helps

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3 years ago

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Would this be Newtons 1st, 2nd, or 3rd law

nekit [7.7K]

Answer:

Newton's First Law of Motion.

Explanation:

Newton's First Law of Motion states that a body continues its state of motion untill and unless an external force acts on it. Here, the truck moves forward even after the breaks are applied in order to maintain its State of motion.

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3 years ago

You are investigating the report of a UFO landing in an isolated portion of New Mexico, and encounter a strange object that is r

SIZIF [17.4K]

Answer: 5 m

Explanation:

We have the following data:

$I_{1}=0.11 W/m^{2}$ is the intensity of the sound at 7.5 m from the source

$r_{1}=7.5 m$ is the distance at which the intensity $I_{1}$ was measured

$I_{2}=1 W/m^{2}$ is the intensity of the sound at $r_{2}$ from the source

We have to find $r_{2}$

Since the object is radiating the signal uniformly in all directions, we can use the <u>Inverse Square Law for Intensity:</u>

$\frac{I_{1}}{I_{2}}=\frac{r_{2}^{2}}{r_{1}^{2}}$

Isolating $r_{2}$ :

$r_{2}=r_{1}\sqrt{\frac{I_{1}}{I_{2}}}$

$r_{2}=7.5 m\sqrt{\frac{0.11 W/m^{2}}{1 W/m^{2}}}$

$r_{2}=2.48 m$ This is the distance at which the intensity is the "threshold of pain"

Now, we have to substract this value to $r_{1}$ to find how much closer to the source can we move:

$r_{1}-r_{2}=7.5 m - 2.48 m=5.02 m \approx 5 m$

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3 years ago

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An archer releases an arrow toward a target. The arrow travels 170 meters in 2 seconds. What is the speed of the arrow?

Anastaziya [24]

Answer:

if its arrow from netflix it will never miss if its robin hood he will get your wallet count if its eagle eye from avengers he will never miss either but will get you with a tricky arrow

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3 years ago