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
kow [346]
2 years ago
15

Which of the following changes would cause the fusion rate in the Sun’s core to increase? Check all that apply. View Available H

int(s) Check all that apply. an increase in the core temperature an increase in the core radius a decrease in the core temperature a decrease in the core radius Submit
Physics
1 answer:
fredd [130]2 years ago
7 0

Answer:

1. An increase in the core temperature

2. A decrease in the core radius.

Explanation:

The sun is a Main Sequence star. A Main Sequence star is powered by fusing hydrogen into Helium within its core.

For this fusion to take place, a temperature of at least 10 million Kelvin is required, beyond this point, the fusion rate is directly related to the core temperature. If the temperature increases, the fusion rate will greatly increase.

Something similar happens if the core reduces its radius. This can happen at the end of the star's lifetime, shortly before it becomes a red giant. Once the hydrogen is depleted, the core will start to shrink because the force of gravity, and as it gets smaller, gets more compressed, and its temperature increases. The outer layers of remaining Hydrogen that were outside the core now begin to heat up, and as the core continues to shrink, the star gets hot enough to begin the fusion process again, and the fusion rate can even be higher than it was during the first phase of the star, as the star becomes a Red Giant.

You might be interested in
the moon revolves around the earth in a nearly circular orbit kept by gravitational force exerted by the earth work done will be
rodikova [14]

Answer:

Zero because the applied force is perpendicular to the motion of the object.

No work is done on an object moving is a circular path about a central attractive force.

Any work done in such a case would result in a change in the orbit.

3 0
2 years ago
A block oscillating up and down on a spring comes to the top of its path, where it is momentarily at rest. At the instant it is
True [87]

Opposite to the direction of the velocity which led it to its current position.

Explanation:

The direction of momentum when a vertically oscillating block comes to the rest momentarily will be opposite to the direction of the velocity that it has just followed to reach reach its current position.

The direction of change in momentum at the bottom will be upwards and at the top will be downwards.

The change in momentum is mathematically defined as:

\Delta P=m.v_f-m.v_i

where:

m= mass of the block

v_f= final velocity of the block

v_i= initial velocity of the block

When the block comes to rest it is due to the result of continuously decreasing velocity.

7 0
3 years ago
PLZ HELP!!!!
FrozenT [24]
I would think the answer is c.
5 0
3 years ago
Read 2 more answers
A typical electric oven has two separate heating elements: one on top and one on the bottom. The bottom element is used for baki
Hunter-Best [27]

Answer:

Convection and Radiation mechanisms carry most of the heat

Explanation:

This is because Convection proceeds strongy as heated air rises from the hot element while Radiation is also strong, although the material of the cooking pots will how effective it is.

3 0
2 years ago
When rocks are put under stress, they may fold, causing ________ to form.
disa [49]
Faults are cracks on the ground that is caused by the movement of the plate tectonics.  They usually cause rocks to break. 

Anitclines and synclines form when rocks are also put under stress, but they fold, not necessarily break apart. They create sharp folds. 

Island arcs are formed through volcanic events and not rocks. 

Mid ocean ridges are formed when oceanic plates move apart.  

Looking at their differences, the answer to your question is B. 
3 0
3 years ago
Other questions:
  • Why is it important foe scientists to know how many valence electrons a given element has
    10·1 answer
  • The ease with which a memory can be retrieved is influenced by all of the following EXCEPT
    10·2 answers
  • I NEED HELP ASAP!!!
    9·1 answer
  • a roller coaster has a speed of 16 m/s at a height 28 meters above the ground what is its speed at the top of the next hill whic
    11·1 answer
  • When a water wave runs into you at the beach, what causes you to get knocked down?
    9·1 answer
  • A 4kg block and a 2kg block can move on horizontal frictionless surface. The blocks are accelerated by a +12-N force that pushes
    10·1 answer
  • 3) A 30 kg child slides freely across a "Slip and Slide" on LEVEL GROUND. While the child slides, the force applied to keep them
    10·1 answer
  • An astronaut is traveling in a space vehicle that has a speed of 0.480c relative to Earth. The astronaut measures his pulse rate
    14·1 answer
  • What cause sound? And how do it work
    10·1 answer
  • What type of foods do bodyguards eat give 5 examples
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!