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3 years ago

15

How does the direction of the electric current, moving across a battery powered device, differ from the direction of travel in t

he AC current sent to homes and businesses?

2 answers:

svetoff [14.1K]3 years ago

8 0

They both have different wave traction's

amm18123 years ago

6 0

Different wave tractions

Hope this helps :D

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The force exerted by the machine is the _____

Neporo4naja [7]

Output Force, hope this helps.

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2 years ago

True or false compounds only have one type of element

klasskru [66]

False, Compounds can contain more than 2 elements.

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3 years ago

The noble gases neon (atomic mass 20.1797 u) and krypton (atomic mass 83.798 u) are accidentally mixed in a vessel that has a te

vagabundo [1.1K]

Answer:

(a) Kav Ne = Kav Kr = 7.29x10⁻²¹J

(b) v(rms) Ne= 659.6m/s and v(rms) Kr= 323.7m/s

Explanation:

(a) According to the kinetic theory of gases the average kinetic energy of the gases can be calculated by:

$K_{av} = \frac{3}{2}kT$ (1)

<em>where $K_{av}$ : is the kinetic energy, k: Boltzmann constant = 1.38x10⁻²³J/K, and T: is the temperature </em>

<u>From equation (1), we can calculate the</u><u> average kinetic energies for the krypton and the neon:</u>

$K_{av} = \frac{3}{2} (1.38\cdot 10^{-23} \frac{J}{K})(352.2K) = 7.29\cdot 10^{-21}J$

(b) The rms speeds of the gases can be calculated by:

$K_{av} = \frac{1}{2}mv_{rms}^{2} \rightarrow v_{rms} = \sqrt \frac{2K_{av}}{m}$

<em>where m: is the mass of the gases and $v_{rms}$ : is the root mean square speed of the gases</em>

For the neon:

$v_{rms} = \sqrt \frac{2(7.29 \cdot 10^{-21}J)}{20.1797 \frac{g}{mol} \cdot \frac {1mol}{6.022\cdot 10^{23}molecules} \cdot \frac{1kg}{1000g}} = 659.6 \frac{m}{s}$

For the krypton:

$v_{rms} = \sqrt \frac{2(7.29 \cdot 10^{-21}J)}{83.798 \frac{g}{mol} \cdot \frac {1mol}{6.022\cdot 10^{23}molecules} \cdot \frac{1kg}{1000g}} = 323.7 \frac{m}{s}$

Have a nice day!

3 0

3 years ago

Describe at least two ways nuclear fission was used in the twentieth century

allsm [11]

Is there any options or just a type up answer?

3 0

2 years ago

Which of the following can sometimes be zero for a moving body i average velocity ii distance travelled iii average speed iv dis

Anika [276]

Answer:

<h3>displacement can be zero...because it only care about initial and final positions</h3>

3 0

3 years ago