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Nata [24]
3 years ago
8

What is the effect of reducing friction on a machine?

Physics
2 answers:
spayn [35]3 years ago
8 0
Sometimes  it increases  the efficiency  of the machine.
Reducing   the friction  between the  tires and the ground on a car  will  decrease the  efficiency -- you will  get more wheel slip.   Or reducing the friction between the steel wheels and the rail   on a train will   reduce the efficiency...<span />
il63 [147K]3 years ago
7 0
It increases efficiency. Hope this helps!!!
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Name all the harry potter books 1-7
miss Akunina [59]

Answer:

1) Harry Potter and the Philosophers Stone (Sorcerers Stone)

2) Harry Potter and the Chamber of Scerets

3)Harry Potter and the Prizoner of Azkaban

4) Harry Potter and the Goblet of Fire

5) Harry Potter and the Order of the Phonix

6) Harry Potter and the Half-Blood Prince

7) Harry Potter and the Deathy Hallows

Explanation:

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2 years ago
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Indica 3 aplicações dos ultrassons. *
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Answer:

El ultrasonido se utiliza en muchos campos diferentes. Los dispositivos ultrasónicos se utilizan para detectar objetos y medir distancias. La ecografía o la ecografía se utilizan a menudo en medicina. En las pruebas no destructivas de productos y estructuras, el ultrasonido se utiliza para detectar defectos invisibles.

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3 0
3 years ago
A segment A of wire stretched tightly between two posts a distance L apart vibrates in its fundamental mode with frequency f. A
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Answer:

option (c)

Explanation:

Fundamental frequency of segment A = f

Second harmonic frequency of B = fundamental frequency of A .

Tension in both the wires is same and the mass density is also same as the wires are identical.

fundamental frequency of wire A is given by

f=\frac{1}{2L_{A}}{\sqrt{\frac{T}{m}}}    .... (1)

Second harmonic of B is given by

f=\frac{2}{2L_{B}}{\sqrt{\frac{T}{m}}}    .... (2)

Equation (1) is equal to equation (2), we get

\frac{1}{2L_{A}}=\frac{2}{2L_{B}}

L_{B}=2L_{A}

So, LB = 2 L

Thus, the length of wire segment B is 2 times the length of wire segment A.

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3 years ago
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Answer:

False

Explanation:

3 0
3 years ago
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Bogdan [553]

Answer:

0.4 m/s

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change in momentum of hammer = change in momentum of astronaut

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