3 years ago

Why does the frequency of a siren get higher as an ambulance using that siren gets closer

Physics

1 answer:

morpeh [17]3 years ago

6 0

Yes it does that’s correct

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4 years ago

In a cyclic process, a gas performs 123 J of work on its surroundings per cycle. What amount of heat, if any, transfers into or

Aleks04 [339]

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123 J transfer into the gas

Explanation:

Here we know that 123 J work is done by the gas on its surrounding

So here gas is doing work against external forces

Now for cyclic process we know that

$\Delta U = 0$

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$dQ = W + \Delta U$

$dQ = W$

so work done is same as the heat supplied to the system

So correct answer is

123 J transfer into the gas

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3 years ago

Why does the frequency of a siren get higher as an ambulance using that siren gets closer​

Why does the frequency of a siren get higher as an ambulance using that siren gets closer