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lakkis [162]
3 years ago
5

When electric current is flowing in a metal, the electrons are movinga. at nearly the speed of light.b. at the speed of sound in

air.c. at the speed of sound in the metal.d. at none of the above speeds.e. at the speed of light.
Physics
1 answer:
yaroslaw [1]3 years ago
8 0

Answer:

Option (d)

Explanation:

The electrons in a conductor moves with the drift velocity when the electric current is flowing through the conductor.

The drift velocity is due to the applied electric field across the conductor.

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Marine science what is climate change?
fgiga [73]

Answer:

In marine ecosystems, climate change is associated with concurrent shifts in temperature, circulation, stratification, nutrient input, oxygen content, and ocean acidification. There are also strong linkages between climate and species distributions, phenology, and demography.

Explanation:

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4 0
2 years ago
Nearly all liquids and solids are nearly opaque to radiation at nearly all wavelengths. why is that
anastassius [24]
As radiation enters a solid or liquid, the light waves are absorbed and reflected by the atoms. the resulting reflection from an atom can be in any direction and is random. you can understand opacity in terms of the scattering of radiation. The more opaque, the more scattering.

(The truth is far more complicated than this, check out Richard Feynmans lectures on "Quantum Electro Dynamics" to learn the reality of it. )
3 0
3 years ago
The Kentucky Derby is held at the Churchill Downs track in Louisville, Kentucky. The track is one and one-quarter miles in lengt
Lera25 [3.4K]

Answer:

2.815 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

s=ut+\frac{1}{2}at^2\\\Rightarrow 1609.34=16.58\times t+\frac{1}{2}\times 0.0105\times t^2\\\Rightarrow \\\Rightarrow 4.905t^2+16.58t-1609.34=0

t=\frac{-16.58+\sqrt{308.69254}}{0.0105},\:t=\frac{-16.58-\sqrt{308.69254}}{0.0105}\\\Rightarrow t=94.25, -3252\ s

Time taken with the acceleration is 94.25 seconds

Time = Distance / Speed

\text{Time}=\frac{1609.34}{16.58}\\\Rightarrow \text{Time}=97.065\ s

Difference in time = 97.065-94.25 = 2.815 seconds

6 0
3 years ago
Sliced or pulled golf driffed from its intended path explain from Bernaulli's principle​
Inessa [10]

Answer:

プルまたはゴルフがベルナウリの原理を引き裂いた

Explanation:

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7 0
3 years ago
What type of electromagnetic radiation does chandra collect?
rusak2 [61]
<span>The answer is X-rays.<span>  </span>Chandra observes the universe in X-ray vision. The observatory has helped astronomers discover black holes, dark matter, quasars, and supernovas and see beyond regions in the universe past that have high temperatures and very high luminosity.  It has allowed us to see the universe beyond our visual capacity (visible light of the electromagnetic spectrum). </span>




5 0
3 years ago
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