2 years ago

What cause sound? And how do it work

1 answer:

4 0

Answer:

Simple yet quick mechanical vibrations of various elastic substances produce sound. When they are moved or struck to vibrate, the auditory nerve of the ear receives the same sort of vibrations, which are subsequently perceived by the mind.

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Work done on a body depends on the magnitude of the force,

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3 years ago

What is the tangential velocity of a record player which makes 11 revolutions in 20 seconds? Please help

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Answer:

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Explanation:

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3 years ago

What is formula for time and velocity

Juliette [100K]

Divide distance by the time it takes to travel that distance
the formula for time is divide distance/speed

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3 years ago

Consider a horizontal layer of the dam wall of thickness dx located a distance x above the reservoir floor. what is the magnitud

sergejj [24]

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3 years ago

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Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el se

BigorU [14]

Answer:

The cup with 0.5L

Explanation:

To know what amount of water you take into account the specific heat of the water. The specific heat of water is:

$c_{water}=4186\frac{J}{kg\°C}$

Thus, 4186 J of energy are needed to icrease the temperature of 1 kg water in 1°C. Then, more grams of water will need more energy.

You have that one cup has 0.5 L and the other one has 750mL = 0.75L

The second cup of water will need more heat because the amount of water contained in the second cup is greater than in the first cup with 0.5L

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3 years ago