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AVprozaik [17]
3 years ago
8

Why does the world rotate and never makes us feel it move?

Physics
2 answers:
grigory [225]3 years ago
6 0

The earth moves too slow for us to feel it. If the earth moved fast time would move faster, meaning we would move faster. We have adapted to our current living situation over millions of years. We have been used to it our entire lives.

jekas [21]3 years ago
3 0

-- The Earth is rotating HALF as fast as the hour hand on a clock ... one full rotation in 24 hours. Too slow to feel.

-- The Earth takes about 4 minutes to rotate ONE DEGREE (out of 360). Too slow to feel.

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Late adulthood is the answer
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-Para lograr que una pieza de 0,300 kg de cierto metal aumente su temperatura desde 40°C a 60 °C ha sido necesario suministrarle
marishachu [46]

Answer:

parte a) el calor específico es c = 0.383 J /(gr*K)

parte b) la temperatura inicial es T inicial= 52.72 °C

Explanation:

para el primer punto la formula para el calor Q es:

Q = m * c * ( T final - T inicial )

donde

m= masa de la pieza = 0.300 kg = 300 gr

Q = flujo de energía en forma de calor= 2299 J

c = calor específico

T final = temperatura final =40°C

T inicial = temperatura inicial = 60 °C

entonces

Q = m * c * ( T final - T inicial )

c = Q / [ m* ( T final - T inicial ) = 2299 J/[ 300 gr  * ( 60 °C - 40°C )]

= 0.383 J /(gr*K)

c = 0.383 J /(gr*K)

para el segundo punto usamos la misma formula

Q = m * c * ( T final - T inicial )

pero

m= 200 gr= 0.200 kg

c=459.8 J/(kg*K) , Q =20.900 J , T final = 280 °C

Q = m * c * ( T final - T inicial )

T inicial = T final - Q/(m*c)  =280 °C - 20.900 J/(459.8 J/(kg*K)* 0.200 kg) = 52.72 °C

7 0
4 years ago
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