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(I) At room temperature, an oxygen molecule, with mass of $5.31 \times 10 ^ { - 26 } \mathrm { kg }$ , typically has a kinetic energy of about $6.21 \times 10 ^ { - 21 } \mathrm { J } .$ How fast is it moving?

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$484 \mathrm{m} / \mathrm{s}$

Physics 101 Mechanics

Chapter 7

Work and Energy

Work

Kinetic Energy

Potential Energy

Energy Conservation

Cornell University

Rutgers, The State University of New Jersey

University of Washington

Hope College

Lectures

04:05

In physics, a conservative force is a force that is path-independent, meaning that the total work done along any path in the field is the same. In other words, the work is independent of the path taken. The only force considered in classical physics to be conservative is gravitation.

03:47

In physics, the kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest. The kinetic energy of a rotating object is the sum of the kinetic energies of the object's parts.

01:05

(I) At room temperature, a…

02:20

At room temperature an oxy…

01:18

At room temperature, an ox…

00:59

01:21

At room temperature, a nit…

03:21

An oxygen molecule with ma…

At $20^{\circ} \mathrm{C}$…

02:11

(I) A 1.0 -mol sample of h…

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04:28

$\bullet$ Oxygen $\left(\m…

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A rocket with a mass of $2…

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What is the average kineti…

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In Part IV you'll lea…

02:58

(I) A 1.0-mol sample of he…

01:04

What is the rms speed of t…

so we can say that all of the kinetic energy, the kinetic energy rather the formula for the kinetic energy is 1/2 and these squared. So if you want to find the velocity, the velocity would simply be equal to the square root of two k e the right I am and so two times a kinetic energy divided by the mass to the 1/2 power that will give us the velocity. And at this point, we can to solve. So two times 6.21 times 10 to the negative, 21st Jules. And then this will be divided by 5.31 times, 10 to the negative 26 kilograms. And this will be again to the 1/2 power and we find that the velocity is equal in 484 meters per second. So this would be our final, and this will be a final answer. That's the end of the solution. Thank you for watching

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