Stars are powered by _____ reactions.
fission
fusion
chemical
electrical

Answers

Answer 1

Answer: The star is a ball of hot gasescontaining different kinds of elements at different cores. It has a very hightemperature that radiates all throughout the galaxy. The star has fourmain parts; the core, photosphere, chromospheres and corona. The outer core ofa star located at the chromospheres contains mostly of hydrogen. Inside the hydrogenis helium then carbon, oxygen, neon, magnesium silicon and the inert gas. When astar releases energy it is due to the thermonuclear fusion of hydrogen intohelium. So the answer is fusion.

Answer 2

Answer:

the answer is fusion

Related Questions

The body can get water from milk juice and vegetables
Humidity can be measured using human _____.
Two dogs pull on a toy. One pulls with a force of 10N, the other with a force of 15N. In what relative directions can the dogs act to give the toy the smallest acceleration?
Which of the following is not one of da Vinci's contributions to technology?a. effect of the moon on tides b. modern theory on the formations of the continents c. precise observations of human anatomy d. ideas for space travel
Which of the following is the best example of a proper hypothesis? Orange popsicles taste sweeter than grape popsicles. If two objects are dropped at the same height, the heavier object will hit the ground first. Children who wear backpacks do better academically. I think there is no effect on hearing if you listen to loud music only three hours a day.

As current flows through a uniform wire, the wire gets hotter because the electrons stop moving and therefore transform their lost kinetic energy into thermal energy in the wire. as current flows through a uniform wire, the wire gets hotter because the electrons stop moving and therefore transform their lost kinetic energy into thermal energy in the wire. a. True

b. False

Answers

True?... I could be wrong

Answer:

The answer is false

Explanation:

I hope this helps!!
If you have any questions let me know!!

What is the wavelength of a sound wave that has a speed of 327 m/s and a frequency of 185 hz?

Answers

Wave speed = frequency * wavelength
We need to rearrange this so wavelength is the subject. To do this, divide both sides by frequency to get :
Wave speed / frequency = wavelength
327 / 185 = 1.7675 m

Which of the following is an advantage of geothermal energy?a. Scarcity of suitable sites

b. Odor pollution

c. Low land use

d. Possible depletion of reservoirs

Answers

Geothermal energies are widely used for various domestic and power supply processes. The lower usage of land is an advantage of geothermal energy. Hence, option (c) is correct.

What is Geothermal Energy?

The energy generated in the form of heat from the Earth is known as geothermal energy. Rocks and Fluids beneath the Earth's crust are the major sources of these kinds of energies.

The advantages of geothermal energy are as follows -

It is a renewable source of energy that is clean and sustainable.
No emission produced, geothermal plants do not produce greenhouse gases like fossil fuels plants. Therefore, it is also known as an eco-friendly source of energy.
It can be pumped back to the ground is among other advantages.

Thus, we can conclude that the lower usage of land is an advantage of geothermal energy. Hence, option (c) is correct.

Learn more about geothermal energy here:

brainly.com/question/1061324

Answer;

C. Low land use

Explanation;

Geothermal energy is the type of energy that is generated as a result of heat from the Earth.
There are many advantages associated with geothermal energy which includes; it is a renewable source of energy that is clean and sustainable, no emission produced, geothermal plants do not produce green house gases like the fossil fuels plants, it can be pumped back to the ground among other advantages.

A graph of the motion of a pendulum shows that it swings from +5 centimeters to -5 centimeters for each cycle. What is the amplitude of the pendulum?

Answers

The amplitude of the pendulum is 5cm.

What is the amplitude?

Amplitude is the maximum displacement of the wave from its mean position upwards or downwards.

As the graph of the motion of pendulum swings from +5cm to -5cm for each cycle, the magnitude of peak amplitude of the pendulum is 5 centimeters.

Learn about amplitude.

brainly.com/question/8662436

#SPJ2

the peak amplitude of the pendulum is 5 centimeters, the peak to peak amplitude of the pendulum is 10 centimeters.

in this case, i think peak to peak amplitude makes more sense

a lump of putty and a rubber ball have equal mass. both are thrown with equal speed against a wall. the putty sticks to the wall. the ball bounces back at nearly the same speed with which it hit the wall. which object experiences the greater momentum change?

Answers

The bouncy ball experiences the greater momentum change.

To understand why, you need to remember that momentum is actually
a vector quantity ... it has a size AND it has a direction too.

The putty and the ball have the same mass, and you throw them
with the same speed. So, on the way from your hand to the wall,
they both have the same momentum.
Call it " M in the direction toward the wall ".

After they both hit the wall:

-- The putty has zero momentum.
Its momentum changed by an amount of M .

-- The ball has momentum of " M in the direction away from the wall ".
Its momentum changed by an amount of 2M .

Rubber ball will experience the greater momentum change than the lump of putty

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Further explanation

Newton's second law of motion states that the resultant force applied to an object is directly proportional to the mass and acceleration of the object.

$\large {\boxed {F = ma }$

F = Force ( Newton )

m = Object's Mass ( kg )

a = Acceleration ( m )

Let us now tackle the problem !

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Given:

mass of a lump of putty = m

mass of rubber ball = m

initial speed of putty = v

final speed of putty = 0

initial speed of rubber ball = v

final speed of rubber ball = -v

Asked:

the change in momentum = Δp = ?

Solution:

Lump of Putty :

$\Delta p_(putty) = mv_f' - mv_i$

$\Delta p_(putty) = m(0) - mv$

$\Delta p_(putty) = - mv$

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Rubber Ball:

$\Delta p_(ball) = mv_f' - mv_i$

$\Delta p_(ball) = m(-v) - mv$

$\Delta p_(ball) = - 2mv$

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$\Delta p_(ball) : \Delta p_(putty) = - 2mv : - mv$

$\Delta p_(ball) : \Delta p_(putty) = 2 : 1$

$\Delta p_(ball) = 2\Delta p_(putty)$

$\Delta p_(ball) > \Delta p_(putty)$

From calculation above , we can conclude that rubber ball will experience the greater momentum change than the lump of putty

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Learn more

Impacts of Gravity : brainly.com/question/5330244
Effect of Earth’s Gravity on Objects : brainly.com/question/8844454
The Acceleration Due To Gravity : brainly.com/question/4189441
Newton's Law of Motion: brainly.com/question/10431582
Example of Newton's Law: brainly.com/question/498822

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Answer details

Grade: High School

Subject: Physics

Chapter: Dynamics

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Keywords: Gravity , Unit , Magnitude , Attraction , Distance , Mass , Newton , Law , Gravitational , Constant

How do you calculate the initial speed given time and displacement?The question is: The longest kick in CFL history was 83.2m. If the ball remained in the air for 4.12s, determine its initial speed.
I calculated it several times and got the same answer, 40.38m/s, but the textbook says it's 28.6m/s.

Answers

Let's first find the velocity in the x-direction which is constant.
$d = vt \n v = (d)/(t) \nv = (83.2m)/(4.12s) \n v= 20.2m/s$

Now, we need the velocity in the y-direction
$d = v_(o)t + (1)/(2)a t^(2) \n d - (1)/(2)at^(2) = v_(o)t\nv_(o) = (0 - (1)/(2)(-9.81)(4.12)^(2))/(4.12)\nv_(o) = 20.2m/s$

Finally, we need to put the two velocities together using pythagorean theorem
$v_(t)^(2) = v_(x)^(2) + v_(y)^(2)$
$v_(t) = \sqrt{20.2^(2) + 20.2^(2)}$
v = 28.6m/s

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