In stars mor massive than the sun, fusion continues until the core is almost all....

Answers

Answer 1

Answer: In stars more massive than the sun, the core temperature is hotter, which allows for fusion of more complex elements.

Most of the fusion occurs in the core.

In stars more massive than the sun, fusion continues through Deuterium, Carbon, and finally reaching iron/nickel.

Up to this point, the fusion reaction was endothermic, which means that the energy expended to produce the fusion reaction was exceeded by the energy produced in the reaction.

Fusion past iron is exothermic, and therefore the star will be able to survive by fusing elements heavier than iron.

After the core is almost entirely iron, the star is no longer in the Main Sequence.

So, fusion in stars more massive than the sun continue fusing until the core is almost entirely iron.

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What does the photoelectric effect prove?

Answers

The photoelectric effect is the process of producing electrons when light shines upon a certain material. The photoelectric effect proves that light is made up of particles or waves which means light has a wave-particle dual nature. Such nature is also present in electrons.

What alternative source of energy do people in your locality use write the purpose of that source

Answers

Answer:

the sun is the main sourse of energy

Explanation:

it can be use to save eco system

there will be no pollution

there will be no harmful gases

A weightless spring is stretched 10 cm by a suspended 1-kg block. If two such springs are used to suspend the block, one spring above the other, to effectively provide one double-length spring, then the total stretch of the double-length spring will be

Answers

Answer:

total stretch of the double-length spring will be 20 cm

Explanation:

given data

length x1 = 10 cm

mass = 1 kg

mass = double = 2 kg

to find out

the total stretch of the double-length spring will be

solution

we can say here spring constant is

k = mg ............1

k is spring constant and m is mass and g is acceleration due to gravity

so for in 1st case and 2nd case with 1 kg mass and 2 kg mass

kx1 = mg .........................2

and

kx2 = 2mg ........................3

x is length

so from equation 2 and 3

$(kx1)/(kx2)= (1mg)/(2mg)$

$(x1)/(x2) = (1)/(2)$

$(10)/(x2) = (1)/(2)$

x2 = 20

so total stretch of the double-length spring will be 20 cm

Collect information about working of geyser and prepare a report

Answers

working of electrical geyser:
the phenomenon which occurs is only the transfer of electric energy into the heat energy...
the water enters through the input and then it is passed into a container having alloy coil which is also covered by conductor of heat but this conductor cannot pass electricity into water but only heat...
then water is heated over there and comes out through outlet..

_______ was the first person to propose the idea of moving continents as a scientific hypothesis. A. Antonio Snider-Pelligrini
B. Alfred Wegener
C. Charles Richter
D. Abraham Ortelius

Answers

B.Alfred Wegener was the first person to propose the idea of moving continents as a scientific hypothesis.

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A 1200 w microwave oven transforms 1.8x10(to the power of 5) J of energy while reheating some food. Calculate how long the food was in the microwave, in mins!? (Please show steps, thanks)

Answers

1200 watts = 1200 joules per second

(1.8 x 10⁵ joules) / (1,200 joules/sec) = 150 sec = 2.5 minutes

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