3 years ago

Need help with this one question!

Physics

2 answers:

Lelu [443]3 years ago

8 0

Answer:

Actual Mechanical Advantage

Explanation:

AMA=mg/F(applied)

lisov135 [29]3 years ago

4 0

I think the following ratio is called, “actual mechanical advantage.”

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3 years ago

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3 years ago

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ANEK [815]

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3 years ago

A child at the top of a slide has a gravatational store of 1800j what is the childs maximum kinetic store as he slides down expl

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3 years ago

I need some help w/ this:

pochemuha

Answer:

The velocity of the police car is, v = 17.798 m/s

Explanation:

Given data,

The actual frequency of the siren, f = 2010 Hz

The observed frequency of siren is, f' = 2120 Hz

The velocity of the observer, v' = 0 m/s

The velocity of the source, v = ?

The formula for Doppler effect,

$f'=\frac{(V+v')}{(V-v)}f$

Where,

V - velocity of sound waves in air.

$v=V-(V+v')\frac{f}{f'}$

Substituting the given values,

$v=343-(343+0)\frac{2010}{2120}$

v = 17.798 m/s

Hence, the velocity of the police car is, v = 17.798 m/s

5 0

3 years ago

Need help with this one question!​

Need help with this one question!