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3 years ago

As the temperature of a substance approaches absolute zero, the random motion of the molecules

1 answer:

5 0

Answer: Decreases

Explanation:
By definition, absolute zero temperature defines the temperature at which the atoms of a material no longer transmit thermal energy.

Engineering materials can transmit thermal energy at higher temperatures by random molecular motion.
It follows that as the temperature decreases toward absolute zero, random molecular motion decreases.

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The total distance from a house to a school to is 9.5 km. A student travels all the way from his house to the school and back to

marysya [2.9K]

Answer:

Explanation:

Displacement is a vector from initial to final point. Because initial and final point are the same, so displacement is 0.

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3 years ago

is the thermal energy transferred in a refrigerator primarily by conduction,convection or radiation? explain your answer

irinina [24]

Answer: Convection

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3 years ago

The Bullet Train The Shinkansen, the Japanese "bullet" train, runs at high speed from Tokyo to Nagoya. Riding on the Shinkansen,

jeyben [28]

Answer:

68.6 m/s

Explanation:

v = Speed of sound in air = 343 m/s

u = Speed of train

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From the Doppler effect we have the observed frequency as

When the train is approaching

$f=f_1\frac{v+u}{v}$

When the train is receeding

$\frac{2f}{3}=f_1\frac{v-u}{v}$

Dividing the above equations we have

$\frac{f}{\frac{2f}{3}}=\frac{f_1\frac{v+u}{v}}{f_1\frac{v-u}{v}}\\\Rightarrow \frac{3}{2}=\frac{v+u}{v-u}\\\Rightarrow 3v-3u=2v+2u\\\Rightarrow v=5u\\\Rightarrow u=\frac{v}{5}\\\Rightarrow u=\frac{343}{5}\\\Rightarrow u=68.6\ m/s$

The speed of the train is 68.6 m/s

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3 years ago

Что означет точки росы 5 C

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Answer:

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3 years ago

How much percent of the earth's water is drinkable?

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