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gayaneshka [121]
3 years ago
7

Define electric current and drift velocity.

Physics
2 answers:
Luba_88 [7]3 years ago
8 0

Answer:

An electric current is the stream of changed particals, such as electrons & ions, moving through an electrical conductor.

The average velocity attained bycharged partical ,such as electrons,in a material due to electric fields

Blizzard [7]3 years ago
3 0

Answer:

Current- the flow of free charges, such as electrons and ions

Drift velocity- the average speed at which these charges move

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Physicist Max Planck showed how objects like stars give off different colors based on their temperature. What color are the hott
jenyasd209 [6]

Answer:

the brightest found are Blue - White with

Explanation:

The energy emission of objects increases with their temperature, specifically Wien described the process in an expression

 

          \lambda_{maximum} T = 2,898 10⁻³

With this expression we can find the temperature of the stars by the color they emit.

Specifically the Sun has a color of 550 nm which corresponds to 5400K

bright stars have a BLUE color corresponding to 7500K

the brightest found are Blue - White with a temperature of 20000K

7 0
3 years ago
What is the total number of pounds of carbon dioxide that 2 trees remove from the air each<br> year?
Vikentia [17]

Answer:

On average, one acre of new forest can sequester about 2.5 tons of carbon annually. Young trees absorb CO2 at a rate of 13 pounds per tree each year. Trees reach their most productive stage of carbon storage at about 10 years at which point they are estimated to absorb 48 pounds of CO2 per year.

5 0
3 years ago
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The population in the United States in 2015 was 321 million people. It is projected to increase to 438 million people by the yea
jolli1 [7]

Answer:

Haven't done this but I think it will increase by 73.29% not too anyone correct me if I'm worng

3 0
3 years ago
The speed limmit on an interstate highway is posted at 75mi/h. What is the speed in kilometers per hour? In feet per second?
jok3333 [9.3K]

I uploaded the answer to a file hosting. Here's link:

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4 0
3 years ago
Vector B~ has x, y, and z components of 8.7,
blagie [28]

Answer:

The magnitude of B is 10.95\ units

Explanation:

we know that

The magnitude of Vector B is

B=\sqrt{x^{2}+y^{2}+z^{2}}

where

x,y and z are the components of vector B

we have

x=8.7\ units, y=1.4\ units,z=6,5\ units

substitute

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B=\sqrt{119.9}

B=10.95\ units

3 0
3 years ago
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