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3 years ago

YOU GUYS!!!!! I HAVE TO TURN IN A POWERPOINT IN 30 MINUTES! HELP!!!!!! WHEN WAS PLASMA ADDED AS A STATE OF MATTER?!?!?!?!

2 answers:

8 0

a plasma is a hot ionized gas consisting of equal numbers and positively charged ions and negativly charged electrons. the characterisitcs of plasma are different from those of oirdinary gases so plama is consideres the fourth state of matter

Hunter-Best [27]3 years ago

7 0

Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. Like gases, plasma's have no fixed shape or volume, and are less dense than solids or liquids.May 5, 2016

In other words, plasma was first identified in a Crookes tube, and so described by Sir William Crookes in 1879 (he called it "radiant matter"). The nature of this "cathode ray" matter was subsequently identified by British physicist Sir J.J. Thomson in 1897. The term "plasma" was coined by Irving Langmuir in 1928.

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The magnetic field due to a utility wire is 0.10 mT when you are at a distance of 10 meters from it. What current (in Amperes) f

ale4655 [162]

Answer:

I = 5000 A

Explanation:

We will use Ampere's Law to calculate the current:

$B = \frac{\mu I}{2\pi r}\\\\$

where,

B = Magnetic Field Strength = 0.1 mT = 1 x 10⁻⁴ T

μ = Permeability of Free Space = 4π x 10⁻⁷ N/A²

I = Current = ?

r = radius = 10 m

Therefore,

$1\ x\ 10^{-4}\ T = \frac{(4\pi\ x\ 10^{-7}\ N/A^2)(I)}{2\pi(10\ m)}\\\\I = \frac{(1\ x\ 10^{-4}\ T)(2\pi (10\ m))}{4\pi\ x\ 10^{-7}\ N/A^2}$

I = 5000 A

4 0

3 years ago

It takes a minimum distance of 41.14 m to stop a car moving at 11.0 m/s by applying the brakes (without locking the wheels). Ass

padilas [110]

Answer:

Find the time it took for the car to stop at 11.0m/s

V = deltax/t

t = 41.14/11.0 = 3.74s

Now find at what rate it was decelerating, so find the acceleration during that interval of time.

vf = vi + at

-11.0m/s = a3.74s

a = -2.94m/s^2

The acceleration is negative because is pulling the car towards its opposite direction to make it stop.

Now find how much time it would take for the car to stop at 28.0m/s but with the same acceleration, the car is the same so its acceleration to stop the car will remain the same.

vf = vi + at

0 = 28.0 - 2.94t

t = 9.52

Once the time is obtained, you can find the final position, xf, by plugging the time acceleration and velocity values.

xf = 0 + (28m/s)(9.52s) + 1/2(-2.94)(9.52s)^2

xf = 266.6m - 133.23m = 133m

8 0

4 years ago

Josh is designing a lab to separate a mixture of sulfur powder and iron filings. He looks at all the ways to separate a mixture

Stolb23 [73]

Answer:

D) magnetic attraction

Explanation:

Mixture consists of sulfur powder and iron filings . The former is non magnetic and the later is magnetic material . The best way to separate them is to use a magnet . This method is called magnetic separation method . A magnet will attract the iron filling but the sulfur will remain un-attracted . Thus, the two will get separated from each other.

6 0

3 years ago

Read 2 more answers

Match the variables to its definition

MA_775_DIABLO [31]

Answer:

See connections below

Explanation:

1 $\Rightarrow$ b

2 $\Rightarrow$ a

3 $\Rightarrow$ d

4 $\Rightarrow$ i

5 $\Rightarrow$ g

6 $\Rightarrow$ h

7 $\Rightarrow$ c

8 $\Rightarrow$ e

9 $\Rightarrow$ f

4 0

3 years ago

When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation:

kvv77 [185]

<h3>Answer;</h3>

B) Not Balanced

B) Sodium

B) Not Equal

The equation is not balanced because the number of sodium atoms is not equal on both sides of the arrow.

<h3>Explanation;</h3>

According to the law of conservation of mass, the mass of reactants should always be the same as the mass of the products in a chemical equation. Therefore, the number of atoms of each element in a chemical equation should always be the same on both sides of the equation, that is the side of reactants and side of products.
Therefore,any chemical equation requires balancing to ensure that the number of atoms of each element is equal in both sides of the equation. Balancing is a try and error process that ensures that the law of conservation of mass holds.
Thus, the balanced chemical equation is;

2Na + Cl2 → 2NaCl

4 0

3 years ago

Read 2 more answers