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tamaranim1 [39]
1 year ago
5

A book sliding across a table has friction, if you increase the weight of the book does the amount of friction increase?

Physics
2 answers:
In-s [12.5K]1 year ago
8 0

B   No, the weight will not change the amount of friction

VladimirAG [237]1 year ago
8 0
Friction is directly proportional to the weight of the load. So yes, the heavier book will have more friction applied to it. (*A*)
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A physical pendulum in the form of a planar object moves in simple harmonic motion with a frequency of 0.680 Hz. The pendulum ha
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Answer:

Therefore, the moment of inertia is:

I=0.37 \: kgm^{2}

Explanation:

The period of an oscillation equation of a solid pendulum is given by:

T=2\pi \sqrt{\frac{I}{Mgd}} (1)

Where:

  • I is the moment of inertia
  • M is the mass of the pendulum
  • d is the distance from the center of mass to the pivot
  • g is the gravity

Let's solve the equation (1) for I

T=2\pi \sqrt{\frac{I}{Mgd}}

I=Mgd(\frac{T}{2\pi})^{2}

Before find I, we need to remember that

T = \frac{1}{f}=\frac{1}{0.680}=1.47\: s

Now, the moment of inertia will be:

I=2*9.81*0.340(\frac{1.47}{2\pi})^{2}  

Therefore, the moment of inertia is:

I=0.37 \: kgm^{2}

I hope it helps you!

7 0
1 year ago
A vertical tube one meter long is open at the top. It is filled with 75 cm of water. If the velocity of sound is 344 m/s, what w
alukav5142 [94]

Answer:

344Hz

Explanation:

First we need to more that the frequency will inky resonate in the portion not containing water. If the total length is 1m and the filled with water up to 75cm, the length of the air column will be 100cm - 75cm = 25cm

Fundamental frequency of a closed pipe fo = V/4L

V is the velocity of sound in air

L is the length of the air column

Given V = 344m/s

L = 25cm = 0.25m

fundamental resonant frequency = 344/4(0.25)

= 344/1

= 344Hz

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what is usually caused when dissimilar materials are rubbed together transferring electrons from one to another
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Answer:

static electricity

Explanation:

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As an expert witness, a forensic scientist is ethically responsible for doing what?
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<span>As an expert witness, a forensic scientist is ethically responsible for telling the whole truth.</span>
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