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3 years ago

The temperature at which all molecular motion stops is

Physics

1 answer:

34kurt3 years ago

7 0

Answer:

Zero Kelvin

Explanation:

The average kinetic energy of the particles in a gas is related to the absolute temperature of the gas by (for an ideal monoatomic gas):

$E_K = \frac{3}{2}kT$

where

k is the Boltzmann constant

T is the absolute temperature

The average kinetic energy is the energy possessed by the particles due to their motion; we see that this energy becomes zero when T = 0, which means when the substance reaches a temperature of zero Kelvin. Therefore, this means that at this temperature all the particles stop moving.

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Answer:

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A sky diver with a mass of 70kg jumps from an aircraft. The aerodynamic drag force acting on the sky diver is known to be Fd=kV^

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Answer:

$v_{max}=52.38\frac{m}{s}$

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Explanation:

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$ma=W-F_d$

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If assuming initial velocity=0:

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joining (1) and (2):

$\frac{v_{100}^2}{2x}=g-\frac{kv_{100}^2}{m}$

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$v_{100}=\sqrt{\frac{9.8}{(\frac{1}{200}+\frac{1}{280})}}$

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$v_{100}=\sqrt{1,143.3}$

$v_{100}=33.81$

To plot velocity as a function of distance, just plot equation (3).

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$v = v_0 +at$

as stated before, the initial velocity is 0:

$v =at$ (4)

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solving for v:

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Plots:

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Answer:

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