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2 years ago

Not a assignment question, just wanna know if scientists know what’s beyond the edge universe

2 answers:

8 0

No they don’t. All the pictures we see if the universe are computer generated. Well, most of them are. We don’t exactly know how the milky way looks. It’s just very good guess.

Oksanka [162]2 years ago

6 0

I don’t think so because we can even get to mars yet how are we supposed to know what’s beyond our universe like i understand beyond solar system but not our universe

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Which is purely physical and which is both physical and chemical

algol [13]

Physical is when something is changed by not changeing its compond like if u melt an ice cube its still that same material and was not changed by something else and and chemical change is when something is changed my acids or changes completly like rusting iron or acid rain and burning stuff

3 0

3 years ago

A string fixed at both ends is 8.40 m long and has a mass of 0.120 kg. It is subjected to a tension of 96.0 N and set oscillatin

Luden [163]

Answer:

81.9756 m/s

16.8 m

4.8795 Hz

Explanation:

m = Mass of string = 0.12 kg

L = Length of string = 8.4 m

T = Tension on string = 96 N

Linear density is given by

$\mu=\dfrac{m}{L}\\\Rightarrow \mu=\dfrac{0.12}{8.4}$

Spee of the wave is given by

$v=\sqrt{\dfrac{T}{\mu}}\\\Rightarrow v=\sqrt{\dfrac{96}{\dfrac{0.12}{8.4}}}\\\Rightarrow v=81.9756\ m/s$

The speed of the waves on the string is 81.9756 m/s

Wavelength is given by

$\lambda=2L\\\Rightarrow \lambda=2\times 8.4\\\Rightarrow \lambda=16.8\ m$

The longest possible wavelength is 16.8 m

Frequency is given by

$f=\dfrac{v}{\lambda}\\\Rightarrow f=\dfrac{81.9756}{16.8}\\\Rightarrow f=4.8795\ Hz$

The frequency of the wave is 4.8795 Hz

3 0

3 years ago

Which of the following is the princlple that all geologic processesd have occurred in the same manner today as they have always

Anvisha [2.4K]

I believe that is uniformitarianism :)

3 0

3 years ago

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what is the voltage in mv across an 5.5 nm thick membrane if the electric field strength across it is 5.75 mv/m? you may assume

inn [45]

Answer:

V = 31.62 m V

Explanation:

Given,

Voltage across thick membrane = ?

Thickness of the membrane, d = 5.5 n m

Electric field = 5.75 M V/m

we know

$E = \dfrac{V}{d}$

V = E d

V = 5.75 x 10⁶ x 5.5 x 10⁻⁹

V = 31.62 x 10⁻³ V

V = 31.62 m V

Hence, The Voltage across the membrane is equal to 31.62 m V.

3 0

3 years ago

What are the units of ppb mass mass/mass?

Darya [45]

Mass concentration is typically represented as mass units of chemical per million units total mass or parts per million (ppmm), where the subscript 'm' indicates mass). The conversion factors are 109 and 1,012 for parts per billion (ppbm) and parts per trillion (pptm), respectively. hope this helps

8 0

3 years ago

Read 2 more answers