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3 years ago

A bicycle is a compound machine, true or false

Physics

2 answers:

CaHeK987 [17]3 years ago

6 0

Answer:

True.

Explanation:

A bicycle is a compound machine.

JulsSmile [24]3 years ago

5 0

This is true. The break handles and brakes are levers and the seat adjustment (raise or lower) is a screw.

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What is the frequency of an event?

konstantin123 [22]

"Frequency" just means "often-ness" ... how often something happens.
It's always expressed as

<em>(number of happenings) / (some period of time) .</em>

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3 years ago

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A heavy anvil is suspended by a 0.75 m long steel wire that has a mass of 12 g. When the wire is plucked, it hums at its fundame

Dima020 [189]

Explanation:

It is given that,

length of steel wire, l = 0.75 m

Mass of the wire, m = 12 g = 0.012 kg

Fundamental frequency, f = 120 Hz

We need to find the mass of the anvil (m'). The fundamental frequency is given by :

$f=\dfrac{v}{2l}$

v is the speed of the mass

Speed is given by :

$v=\sqrt{\dfrac{T}{\mu}}$

$\mu$ is the mass per unit length, $\mu=\dfrac{m}{l}$

$f=\dfrac{1}{2l}\sqrt{\dfrac{T}{\mu}}$

T is the tension in the wire,

$f=\dfrac{1}{2l}\sqrt{\dfrac{Tl}{m}}$

$T=4f^2lm$

$T=4(120)^2\times 0.75\times 0.012$

T = 518.4 N

Tension in the wire, T = m' g

$m'=\dfrac{T}{g}$

$m'=\dfrac{518.4}{9.8}$

m' = 52.89 kg

So, the mass of the anvil is 52.89 kg. Hence, this is the required solution.

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3 years ago

What feelings do learned helplessness and depression have in common?

8_murik_8 [283]

Answer:

Learned helplessness can have a profound impact on mental health and well-being. People who experience learned helplessness are also likely to experience symptoms of depression, elevated stress levels, and less motivation to take care of their physical health. Not everyone responds to experiences the same way.

Explanation:

Brainlist will be very accepted ;D *wink*

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2 years ago

4. How will you find the volume of an irregularly shaped object that would dissolve<br>in water?

Dimas [21]

Um you should putting it in a object that it can fill then go from there

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3 years ago

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Hello, I want to ask. . anyone knows the answer.

sasho [114]

Answer:

Explanation:

Please give brainliest.

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2 years ago