3 years ago

1

Physics

1 answer:

vaieri [72.5K]3 years ago

7 0

Answer:

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Explanation:

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Calculate the fraction of methyl isonitrile molecules that have an energy of 160.0 kJ or greater at 510 K .

soldi70 [24.7K]

Answer:

$4.0932672025\times 10^{-17}$

Explanation:

$E_a$ = Activation energy = 160 kJ

T = Temperature = 510 K

R = Universal gas constant = 8.314 J/mol K

The fraction of energy is given by

$f=e^{-\dfrac{E_a}{RT}}\\\Rightarrow f=e^{-\dfrac{160000}{8.314\times 510}}\\\Rightarrow f=4.0932672025\times 10^{-17}$

The fraction of energy is $4.0932672025\times 10^{-17}$

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3 years ago

Calculate the speed of a proton after it accelerates from rest through a potential difference of 380 v .

nikitadnepr [17]

The magnitude of the change in potential energy is equal to the kinetic energy,

$\left | \Delta U \right |= K$

$qV=\frac{1}{2} mv^{2}$

Here, V is potential difference, q is charge, m is mass and v is velocity.

We can also write,

$v=\sqrt{\frac{2qV}{m} }$

Given $V=380 V$

Substituting this value with mass of proton, $m=1.672\times10^{-27} kg$ and charge of proton, $q= 1.6\times10^{-19} C$ we get

$v=\sqrt{\frac{2\times1.6\times10^{-19}C \times 380V}{1.672\times10^{-27} kg} }\\\\v= 727.27\times10^{8} m/s =7.27\times10^{6}m/s$

Therefore, the speed of proton is $7.27\times10^{6}m/s$ .

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Because it is really hard and rocks can't be visible or vibrate

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The area on the thermometer marked with the letter A is called the <br> .

makvit [3.9K]

It's called auxiliary scale

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When this type of rock breaks, it breaks into layers. A. igneous B. sedimentary C. foliated D. nonfoliated

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