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andrey2020 [161]
3 years ago
7

Whats the origin of all stars? a) supernova b) dwarfs c) protostars d) nebulae

Physics
2 answers:
Fudgin [204]3 years ago
5 0
All stars originated from c., protostars. Protostars are the earliest phase of the process of star evolution.

-Starry Sky 

Oh lmao, my name and the irony. cx
nydimaria [60]3 years ago
4 0

What is the origin of all stars?


c

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In the steady state 1.2 ✕ 1018 electrons per second enter bulb 1. There are 6.3 ✕ 1028 mobile electrons per cubic meter in tungs
bekas [8.4K]

Answer:

E=12.2V/m

Explanation:

To solve this problem we must address the concepts of drift velocity. A drift velocity is the average velocity attained by charged particles, such as electrons, in a material due to an electric field.

The equation is given by,

V=\frac{I}{nAq}

Where,

V= Drift Velocity

I= Flow of current

n= number of electrons

q = charge of electron

A = cross-section area.

For this problem we know that there is a rate of 1.8*10^{18} electrons per second, that is

\frac{I}{q} = 1.2*10^{18}

A= 1.3*10^{-8}m^2

n=6.3*10^{28} e/m^3

\omicron{O} = 1.2*10^{-4}(m/s)(N/c) Mobility

We can find the drift velocity replacing,

V = \frac{1.2*10^{18}}{(1.3*10^{-8})(6.3*10^{28})}

V= 1.465*10^-3m/s

The electric field is given by,

E= \frac{V}{\omicron{O}}

E=\frac{1.465*10^-3}{1.2*10^{-4}}

E=12.2V/m

7 0
3 years ago
Is a light on potential or kinetic?
Basile [38]

its the the first one u said

7 0
3 years ago
Which statements best describe the second stage of cellular respiration? Check all that apply.
grandymaker [24]

Answer:

oxygen combines with small molecules. energy is released and it happens in the cytoplasm

Explanation:

7 0
3 years ago
Read 2 more answers
A farm truck travels due east with a constant speed of 9.50 m/s along a horizontal road. A boy riding in the back of the truck t
Reil [10]

Answer:

a)he angle is 90 with respect to the horizontal (x axis)

b) its speed is zero both vertically and horizontally

c)  vertical path

d)  a parabolic movement

e)  v₀ = (9.5i ^ + 8.232 j ^) m / s

Explanation:

This is a relative problem and movement.

            .v ’= v + u

Where v ’is the speed with respect to the mobile system, v the speed with respect to the fixed system and the speed between the two reference systems

a) The child and the can is in the truck, so they go at the speed of the truck, when he throws the can he continues at this speed on the x-axis and therefore as the two advance the same distance the more hands of the child, consequently the can is thrown vertically

The angle is 90 with respect to the horizontal (x axis)

b) with respect to the truck, the can is still, so its speed is zero both vertically and horizontally

c) The child sees that the can follows a vertical path

d) A stationary observer on the ground, sees that the can has a constant speed in the same direction of the truck and when they throw it vertical goal has a vertical movement, the sum of these two movements gives a parabolic movement of the same uncle as a projectile launch

e) the initial speed has two components

X Axis         v_lata = v_camion = 9.5 m / s

Y Axis          speed given by the child

Let's look for the travel time

         x = v₀ₓ t

         t = x / v₀ₓ

         t = 16 / 9.5

         t = 1.68 s

     

         y = v_{oy} t - ½ g t²

When he returns to the child's hand and = 0

          0 = v_{oy} t - ½ g t²

          v_{oy} = ½ g t

          v_{oy} = ½  9.8  1.68

          v_{oy} = 8,232 m / s

Speed ​​is

         v₀ = (9.5i ^ + 8.232 j ^) m / s

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3 years ago
The mid-atlantic ridge crosses through iceland. physical features such as tensional fractures and cinder cone volcanoes are all
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This indicates that they are moving away from each other, meaning that they form a divergent plate boundary, between the two continental plates, the Eurasian Plate moving eastward, and the North American Plate moving west, this forms the Mid Atlantic Ridge.<span>
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