3 years ago

Which of the following is a compound machine

Physics

2 answers:

Ivahew [28]3 years ago

8 0

The answer is c.

Hope this helps!!!!!!!!!!

Stells [14]3 years ago

3 0

The answer is bicycle

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A source produces 20 crests and 20 troughs in 4 seconds. The second crest is 3 cm away from the first crest.Calculate :

sineoko [7]

Answer:

Solution given:

No of waves[N] =20crests & 20 troughs

=20waves

Time[T]=4seconds

distance[d]=3cm=0.03m

Now

<u>Wave</u><u> </u><u>length</u><u>=</u>3cm=3 × ${10}^{ - 2}m$

<u>Frequency</u>= $\frac{No of waves}{time}$

= $\frac{20}{4}$ =5Hertz

and

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2 years ago

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astra-53 [7]

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Explanation:

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3 years ago

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topjm [15]

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2 years ago

A piston-cylinder device initially contains 0.3 kg of nitrogen gas at 160 kPa and 140oC. The nitrogen is now expanded isothermal

irakobra [83]

Answer:

<h2>Work done by the gas is given as</h2><h2> $W = 1.72 \times 10^4 J$ </h2>

Explanation:

As we know that the process is isothermal so here work done is given as

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$W = 1.72 \times 10^4 J$

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2 years ago

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bazaltina [42]

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3 years ago

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