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
photoshop1234 [79]
3 years ago
7

In your own words tell me about the live cycle of a star (4-5 sentences)

Physics
1 answer:
balu736 [363]3 years ago
4 0

Answer: Stars are formed in clouds of gas and dust, known as nebulae. Nuclear reactions at the centre (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its size.

Explanation: I try to do your question, hope this help

You might be interested in
What is the weight of an astronaut with a mass of 75 kg on the moon? The gravitational field strength on the moon is 1.6 Nkg-1.
bearhunter [10]

okay this is kinda easy

<u>What is the gravitational field strength on the moon?</u>

The Moon has a gravitational field strength of 1.6 N/kg.

7 0
2 years ago
Which two statements correctly describe transmutation? O A. The parent and daughter elements are different. B. The atomic masses
Yakvenalex [24]

Answer:

A. and D.

Explanation:

5 0
3 years ago
a body builder uses a chest expander with 5 strings.it takes a force of 200n to pull one string by 15cm.how much force will be n
wolverine [178]

Answer:

<u>1000N</u>

Explanation:

It takes 200N to expand 15cm of one string.

For 5 strings, force required =

200 x 5 = <u>1000N</u>

5 0
1 year ago
1. How would the interference pattern change for this experiment if a. the grating was moved twice as far from the screen and b.
jolli1 [7]

Answer:

a) The distance between the ineas doubles, intensity decreases with distance

b) The distance between the ineas doubles

Explanation:

The diffraction pattern of a grid is given as a percentage

                d sin θ = m λ

where d give the distance between two consecutive lines, θ it is at an angle, λ the wavelength and m is an integer that determines the order of diffraction, let's not forget that the entire spectrum is at a value of m and then it is repeated.

Let's apply this to our case

a) distance from grid to observation screen doubles

Here we have two effect:

* the energy of the source is constant, it must be distributed over a surface, therefore the intensity decreases with distance

* The other factor can be found using trigonometry

          tan θ= y / L

where y is the distance from the central maximum to the line under study and L is the distance to the screen

           

In general, diffraction experiments cover very small angles

             tan θ = sin θ/ cos θ = sin θ

we substitute

          sinθ = y / L

we subtitle into the diffraction equation

          d y / L = m λ

          y = L / d m λ

          L = 2 L₀

          y = 2 L₀ m λ / d

we see that by doubling the distance to the screen the lines we are seeing are separated by double

b) When the density of lines doubles, it means that in the same distance I have twice as many lines, therefore the distance between two consecutive lines is reduced by half

          d = d₀o / 2

          y = (L m λ) / d

          y = (L m λ/ d₀) 2

we see that The distance between the ineas doubles

5 0
2 years ago
What acceleration will you give to a 25kg box if you push it with a force of 85N
Grace [21]
<h3>Answer:</h3>

3.4 m/s²

<h3>Explanation:</h3>

We are given;

  • Mass of the box as 25 kg
  • Force is 85 N

We are required to determine the acceleration;

  • According to second newton's law of motion force is given by the product of mass and acceleration.
  • That is;

Force = ma

Rearranging the formula;

a = F ÷ m

Therefore;

acceleration = 85 N ÷ 25 kg

                       = 3.4 m/s²

Thus, the acceleration of the box will be 3.4 m/s²

5 0
3 years ago
Other questions:
  • (12)
    12·1 answer
  • A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The coefficient of kinetic fric
    8·2 answers
  • Who were Socrates and Plato
    8·2 answers
  • If a current­-carrying wire has a cross­-sectional area that gradually becomes smaller along the length of the wire, the drift v
    10·1 answer
  • All electromagnetic waves
    11·1 answer
  • Two concrete spans of a 380 m long bridge are
    15·1 answer
  • Ocean waves are hitting a beach at a rate of 3.2 Hz. What is the period of the waves? (2 decimal places)
    12·1 answer
  • Which statement describes steps involved in the production of hydroelectric power?
    7·2 answers
  • Kinetic energy increases as
    7·2 answers
  • A projectile lands at the same height from which it was launched. which initial velocity will result
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!