An alpha particle is identical to a helium nucleus as it consists of two protons and two neutrons, which match the composition of a helium atom’s nucleus.
An alpha particle is identical to a helium nucleus. This is because an alpha particle contains two protons and two neutrons, which is the same as the nucleus of a helium atom. The alpha particle does not have electrons that surround the nucleus in a helium atom.
Options B, C, and D are not correct. A hydrogen nucleus (B) has only one proton and no neutrons, a high energy electron (C) is a subatomic particle with charge -1 and not part of a helium nucleus, and a radium nucleus (D) contains many more protons and neutrons than a helium nucleus or an alpha particle.
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Answer:
Explanation:
Initial velocity , u = 27 m/s
displacement before stop, s = 41.5 m .
final velocity, v = 0
acceleration a = ?
v² = u² + 2 a s
0 = 27² + 2 x a x 41.5
a = - 27² / 2 x 41.5
= - 8.78 m /s
Galileo Galilei
Albert Einstein
Henrietta Swan Leavitt
Edwin Hubble
Georges Lemaître
theorized that the universe had a beginning
showed that the universe was expanding
demonstrated a method to calculate the distance of celestial bodies
was the first to use a telescope to observe the planets
huit a model of the inverse haced on relativity
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Galileo Galilei was the first to use a telescope to observe the planets
Albert Einstein built a model of the universe based on relativity
Henrietta Swan Leavitt demonstrated a method to calculate the distance of celestial bodies
Edwin Hubble showed that the universe was expanding
Georges Lemaître theorized that the universe had a beginning
Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.
A method of learning about the world is science. Science allows people to participate in the creation of new knowledge as well as use that knowledge to further their goals. It is both a process, a product, and an institution.
Thus, The first person to observe the planets through a telescope was Galileo Galilei.
Based on relativity, Albert Einstein created a model of the universe.
A technique to determine the separation between celestial bodies was demonstrated by Henrietta Swan Leavitt.
Edwin Hubble demonstrated the expansion of the universe
According to Georges Lemaître, the universe had a beginning.
Learn more about the science here
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Answer:
Georges Lemaître - theorized that the universe had a beginning
Albert Einstein - huit a model of the inverse haced on relativity
Galileo Galilei - was the first to use a telescope to observe the planets
Edwin Hubble - showed that the universe was expanding
Henrietta Swan Leavitt - demonstrated a method to calculate the distance of celestial bodies
is my choices report if wrong
which substance is uniquely a product of incomplete combustion of a fossil fuel?
carbon monoxide
Answer:
6.2
Explanation:
plato user
A. 0.0075 N
B. 0.75 N
C. 750 N
D. 7.5 N
Obviously D. 7.5
Why?
Well, 7.5 is exactly between 7 and 8.