1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kolbaska11 [484]
3 years ago
5

Explain in detail the birth life and death of a main sequence star give an example

Physics
1 answer:
galina1969 [7]3 years ago
8 0
Birth Star:
Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. Stars start their lives as clouds of dust and gas.
Death Star:
Dense regions in the clouds collapse and form "protostars". Initially, the gravitational energy of the collapsing star is the source of its energy. Once the star contracts enough that its central core can burn hydrogen to helium, it becomes a "main sequence" star.
You might be interested in
The two conducting rails in the drawing are tilted upwards so they each make an angle of 30.0° with respect to the ground. The v
dolphi86 [110]

Answer:

The current flows through the rod is 14.9 A.

Explanation:

Given that,

Magnetic field = 0.045 T

Mass of aluminum rod  = 0.19 kg

Length = 1.6 m

Angle = 30.0°

We need to calculate the force

Using resolving force

F\cos\theta=mg\sin\theta

F=mg\tan\theta

Put the value into the formula

F=0.19\times9.8\times\tan30

F=1.075\ N

We need to calculate the current flows through the rod

Using formula of magnetic force

F=iLB

i=\dfrac{F}{LB}

Put the value into the formula

i=\dfrac{1.075}{1.6\times0.045}

i=14.9\ A

Hence, The current flows through the rod is 14.9 A.

8 0
3 years ago
A car accelerates horizontally from rest on a level road at a constant acceleration of Down the road, it passes through two phot
11Alexandr11 [23.1K]

Answer:i totally forgot how that works

Explanation:

??

5 0
3 years ago
Read 2 more answers
What are the fastest spinning objects known in the universe?
Sergio039 [100]

1) neuron stars

2) centrifugal force

8 0
1 year ago
A continental polar air mass forms in ____
Sladkaya [172]
I believe it is A bit not completely sure
7 0
3 years ago
Assume a small 11 kg crate is attached to a parachute. The chute pulls up on the crate with 150 N.
MaRussiya [10]

Explanation:

a. The net force is the upward force of the chute minus the weight of the crate.

∑F = F − mg

∑F = 150 N − (11 kg) (9.8 m/s²)

∑F = 42.2 N

b. From Newton's second law, the net force equals the mass times acceleration:

∑F = ma

42.2 N = (11 kg) a

a = 3.84 m/s²

c. Acceleration is the change in velocity over change in time.  Assuming the crate is released from rest:

v = at + v₀

v = (3.84 m/s²) (5 s) + (0 m/s)

v = 19.2 m/s

3 0
3 years ago
Other questions:
  • How does a generator produce electrical energy?
    9·2 answers
  • If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun an
    11·1 answer
  • A box of mass m = 1.80 kg is dropped from rest onto a massless, vertical spring with spring constant k = 2.00 ✕ 102 N/m that is
    14·1 answer
  • When an automobile rolls on pavement, the instantaneous center of one of its wheels is located on the wheel axle. True o False
    9·1 answer
  • The cheetah is considered the fastest running animal in the world. Cheetahs can accelerate to a speed of 21.7 m/s in 2.50 s and
    13·1 answer
  • A long line of charge with uniform linear charge density λ1 is located on the x-axis and another long line of charge with unifor
    10·1 answer
  • Convert mm3 into m3.​
    11·1 answer
  • a. 2.00kg object is subject to three force that gives acceleration a =8m/s^2 i +6m/s j if two of three forces are f1 =(30.0N)+(1
    14·1 answer
  • Which of the physical variables listed below will change when you change the area of the capacitor plates (while keeping the bat
    14·1 answer
  • Dust, accumulated at the time of the formation of the solar system is sometimes preserved in asteroids, meteoroids, and meteorit
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!