3 years ago

PLS HELP ME

1 answer:

NeTakaya3 years ago

4 0

The answer is true...

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Papessa [141]

Particles vibrate parallel to the direction the sound travels. It's a longitudinal wave.

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3 years ago

Oksana_A [137]

Answer:

Explanation:

The mechanical advantage of a machine is given by

$MA=\frac{F_{out}}{F_{in}}$

where

$F_{out}$ is the output force

$F_{in}$ is the input force

For the crowbar in this problem,

$F_{in}=10 N$ is the force in input applied by the worker

$F_{out}=500 N$ is the force that the machine must apply in output to overcome the resistance of the window and to open it

Substituting into the equation, we find

$MA=\frac{500}{10}=50$

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wolverine [178]

Answer:

Explanation:

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3 years ago

tamaranim1 [39]

True ..........................

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Whitepunk [10]

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