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2 years ago

How will you relate yourself to stellar evolution?

Physics

1 answer:

adoni [48]2 years ago

6 0

Answer:

<em>Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the star, its lifetime can range from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. The table shows the lifetimes of stars as a function of their masses.[1] All stars are formed from collapsing clouds of gas and dust, often called nebulae or molecular clouds. Over the course of millions of years, these protostars settle down into a state of equilibrium, becoming what is known as a main-seque</em>

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Which of the following is the keyboard shortcut for saving a document?

Kryger [21]

Cntrl s
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3 years ago

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All of the following statements are correct except ________ .

Korvikt [17]

Answer:

Explanation:

a) Is a correct statement as belts are reinforcing materials that encircle the tire under the thread. it acts as a protecting layer.

b) This is also a correct statement as the carcass of tire is actually made of plies, layers of clothes and rubber.

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d) This is an incorrect statement as beads are not the decorative pattern at the outer edge of the tread.

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3 years ago

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A 1.5 V battery is connected to a 1,000 μF capacitor in series with a 150 Ω resistor. a. What is the maximum current that flows

Elza [17]

Answer:

$0.01\ \text{A}$

$0.0015\ \text{C}$

$0.0608\ \text{s}$

Explanation:

$V_0$ = Voltage = 1.5 V

$C$ = Capacitance = $1000\ \mu\text{F}$

$R$ = Resistance = $150\ \Omega$

Current is given by

$I=\dfrac{V_0}{R}\\\Rightarrow I=\dfrac{1.5}{150}\\\Rightarrow I=0.01\ \text{A}$

Current flowing in the resistor is $0.01\ \text{A}$ .

Charge is given by

$Q=CV\\\Rightarrow Q=1000\times 10^{-6}\times 1.5\\\Rightarrow Q=0.0015\ \text{C}$

The charge on the capacitor is $0.0015\ \text{C}$ .

Voltage is given by

$V=V_0e^{-\dfrac{t}{RC}}\\\Rightarrow t=-RC\ln\dfrac{V}{V_0}\\\Rightarrow t=-150\times 1000\times 10^{-6}\times\ln\dfrac{1}{1.5}\\\Rightarrow t=0.0608\ \text{s}$

Time taken to reach 1 V is $0.0608\ \text{s}$ .

3 0

2 years ago

Which structure is responsible for breaking down sugar molecules in order to supply energy to the cell? A B C D

Dominik [7]

The answer is C it is responseible

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2 years ago

The bearing of lines A and B are 16Â° 10` and 332Â° 18`, the value of the included angle BOA is:_______

slega [8]

Answer:

D. 43Â° 52`

Explanation:

A bearing is an angle, measured clockwise from the north direction. When solving a bearing problem, it is good to represent the bearings in the given question with diagram.

The diagrammatically representation of the bearing of lines A and B, 16Â° 10` and 332Â° 18` respectively given in the question is shown in the figure attached.

At Point A, we will calculate angle ∠BAO.

Calculating the angle ∠BAO

∠BAO = 90° - 16Â° 10`

= 73Â° 50`

At Point B, we will calculate angle ∠ABO.

Calculating the angle ∠ABO

∠ABO = 332Â° 18` - 270Â° 0`

= 62Â° 18`

At Point O, we will calculate the include angle ∠BOA.

Calculating the angle ∠BOA

∠BAO + ∠ABO + ∠BOA = 180° (sum of angles in a triangle)

73Â° 50` + 62Â° 18` + ∠BOA = 180°

136Â° 8` + ∠BOA = 180°

∠BOA = 180° - 136Â° 8`

∠BOA = 43Â° 52`

The value of the included angle BOA is 43Â° 52

3 0

3 years ago