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3 years ago

Read the paragraph below and answer the question that follows:

Physics

1 answer:

elena-s [515]3 years ago

8 0

B. Helium because it is constantly being made in the sun

Explanation:

From the given paragraph, we can conclude that helium is the most common element in a star such as the sun because it is constantly being made.

In the nuclear fusion process that results in the production of helium, hydrogen nuclei are the reactants and helium is the product.

since the reactants are constantly being used in the core of the sun, this suggests that the products must be more.
The reaction requires a high temperature and pressure to initiate.
It is a series of chain reaction that uses a fuel of hydrogen to produce helium.

learn more:

Transmutation brainly.com/question/3433940

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If a 126 gram marble rolls down a hill at an acceleration of 3.0m/s2, what would the force be on the marble?

adelina 88 [10]

Answer:

Explanation:

Net force would be the one causing the acceleration or

F = ma = 0.126(3.0) = 0.378 N

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3 years ago

What is the velocity of an 500- kilogram elevator that has 4000 joules of energy

vlada-n [284]

$\frac{1}{2}$ (500kg) × $v^{2}$ = 4000J

V = √(4000 ÷ 250) = 4 m/s

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4 years ago

You hold a 0.125 kg glider A and a 0.500 kg glider B at rest on an air track with a compressed spring of negligible mass between

o-na [289]

Answer:

Magnitude |VB| = 0.32 m/s

and

Direction is to the left

Explanation:

given data

glider A mass = 0.125 kg

glider B mass = 0.500 kg

glider A move = 0.960 m to the left

solution

we use here Conservation of momentum that is

M1 × U1 + M2 × U2 =M1 × V1 + M2 × V2 ........................1

put here value and we get

0.125 × 0 + 0.500 × 0 = 0.125 × 0.960 + 0.375 × VB

VB = −0.32 m/s

Magnitude |VB| = 0.32 m/s

and

Direction is to the left

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3 years ago

name the device used often to change the resistance without changing the voltage source in an electric circuit

timofeeve [1]

the devices which are used to change the resistance in a circuit are called
resisitors...
the fact that they effect the voltage or not simply depends upon the type of resistor used in the circuit ...:)

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3 years ago

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4 years ago

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