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
podryga [215]
3 years ago
7

What happens first when a star begins to run out of fuel?

Physics
2 answers:
vaieri [72.5K]3 years ago
5 0

Answer:

A

Explanation:

Westkost [7]3 years ago
3 0

<u>answer</u>

choice a

<u>explanation</u>

when a star's fuel is drained, the core begins to shrink first. then the star is broken down by itself and turns into a black hole or white dwarf depending on the star's original size.

You might be interested in
A 75.0 kg stunt man jumps from a balcony and falls 24.0
Anika [276]

Answer:

The force that acts on the man equals 15354.75 newtons.

Explanation:

After falling through a distance of 24.0 meters the speed of the stunt man upon hitting the mattress can be obtained using third equation of kinematics as

v^{2}=u^{2}+2gh\\\\\therefore v=\sqrt{2gh}\\\\v=\sqrt{2\times 9.81\times 24}\\\\v=21.7m/s ( u=0 since the man falls from rest)

Now since the man is decelerated through a distance of 1.15 meters thus the acceleration produced can be obtained from third equation of kinematics as

v^{2}=u^{2}+2as\\\\0=u^{2}=2as\\\\a=\frac{-u^{2}}{2s}\\\\a=-\frac{(21.7^{2}}{2\times 1.15}=-204.73m/s^{2}

Now by newton's second law the force that produced deceleration of the calculated magnitude is obtained as

F=mass\times acceleration\\\\F=75.0\times -204.73=-15354.75Newtons

The negative sign indicates that the direction of force is opposite of motion.

5 0
3 years ago
A student at the top of building of height h throws one ball upward with the initial speed V and then throws a second ball downw
Vlad1618 [11]

Answer:

They are the same (assuming there is no air friction)

Explanation:

Take a look at the picture.

When the first ball (the one thrown upward) gets to the point marked as A, the speed will has the exact same value V but the velocity will now point downward (just like the second ball).

So if you think about it, the first ball, from point A to the ground, will behave exactly like the second ball (same initial speed, same height).

That is why the speeds will be the same when they reach the ground.

7 0
3 years ago
Read 2 more answers
Two pulses move in opposite directions on a string and are identical in shape except that one has positive displacements of the
Leni [432]

(c) When the two pulses completely overlap on the string forms a straight line.

A single disturbance that travels via a transmission medium is referred to as a pulse. This medium might be formed of stuff or a vacuum, and it might be endlessly large or finite in size.

Consider two pulses that are identical in shape and proceed in opposite directions along a string, with the exception that one has positive displacements of the string's elements while the other has negative displacements.

On the string, the two pulses blend together completely.

The pulses completely balance one another out in terms of removing string elements from equilibrium, yet the string still moves. Shortly after the string is once again shifted, the pulses will have passed each other.

The correct option is (c)

Learn more about pulse here:

brainly.com/question/14885673

#SPJ4

6 0
1 year ago
40 meters divided by 5
denis23 [38]

Answer:

8 meters

Explanation:

40/ 5 = 8

8 0
2 years ago
Help.. mee..<br><br><br> ;-; <br> Dont answer if you dont know I dont want to fail this
timama [110]

Answer:

It would be B because the warm air heats up and then burns the marshmallow. And the heat and the marshmallow were touching each other

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • A fortnite is an old English term that means 14 days. How many seconds are in a fortnite?
    12·2 answers
  • What is the definition of balanced forces? i need help i cnt find the definition on dictionary.com
    15·1 answer
  • An overhead projector lens is
    13·1 answer
  • Difference between xrays and radio wave
    7·1 answer
  • Dont skip need help ASAP and pls hurry will give 10 pts + brainliest
    11·2 answers
  • Determine the speed of sound in air at 300 K. Also determine the Mach number of an aircraft moving in the air at a velocity of 3
    5·1 answer
  • You are a member of a citizen's committee investigating safety in the high school sports program. You are interested in knee dam
    6·1 answer
  • What is the equivalent resistance of the circuit pictured below?
    7·2 answers
  • 5. You are pulling a rubber sneaker along concrete
    8·1 answer
  • A skydiver has a mass of 50.5 kg what is the force of weight on the sky diver? <br> F= _N
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!