PHYSICS HIGH SCHOOL

Describe two reasons why an alpha particle is less penetrating than a beta or gamma particle.

Answers

Answer 1
Answer: Alpha particles travel through the air they collide with oxygen and nitrogen molecules. While they collide with these molecules, they lose some energy until all energy are used up and they are absorbed. These particles can be absorbed by a sheet of paper or by the air. On the other hand, beta particles and gamma particles move faster than the alpha particles and are poor at ionizing atoms or molecules thus it takes more of the material to be able to absorb these particles.
Answer 2
Answer:

Answer:

1. Heavy mass

2. greater charge

Explanation:

An alpha particle has two protons and two neutrons. It has +2 e charge. It is a heavy mass particle. Thus, when it tends to penetrate even a thin sheet, it loses its energy very quickly because of its interaction with the material particles.

Beta particle is a high energy electron or positron. It carries 1 unit charge and has very less mass in comparison to an alpha particle. Thus, it has more penetrating power than alpha particle.

A gamma particle is charge less and mass less highly energetic particle. Thus, it has highest penetrating power.

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If the compass direction of a resultant vector is reported as 27 degrees southof west, what is the global angle of the vector?

Answers

Answer:

207°

Explanation:

You start at the positive x axis and move counter clockwise. So half a circle is 180° + 27° = 207°

What are the two most reactive groups of elements in the periodic table?

Answers

The periodic table is a tabulated organization and representation of chemical elements that classify elements similar to repeating characteristics and order them by their increasing atomic number.

The periodic table is structured into:

  • rows known as periods and;
  • columns usually called groups.

The groups are categorized from group 1 (known as the alkali metals) to group 18 (i.e. the noble gases)

The list of the two most reactive groups are:

  • Alkali metals and;
  • The halogen family

  1. Alkali metals i.e the group 1 metals are one of the two metals with the highest reactivity.  This is owing to their greater atomic radii and lower ionization energies, among other factors. They exhibit an oxidation state of +1 and typically donate electrons in reaction with the halogen family thereby resulting in the formation of an ionic bond. They also have lower boiling and melting points than other elements and are less dense.
  2. The halogen family which is the other group of the most reactive elements on the periodic table is distinguished by their electronegativity characteristics. i.e. their ability to attracts electrons to themselves. They are located in group 7 on the periodic table.

Thus, we can conclude that the two most reactive groups of elements in the periodic table are the alkali metals and the halogen family.

Learn more about the periodic table here:

brainly.com/question/17170685?referrer=searchResults
The Halogens and the Alkali Metals.

Earth, the Sun, and billions of stars are contained within

Answers

I think it is the Milky Way.
In the Milky Way galaxy

Explain the energy transformations that occur when breaking in a hybrid
vehicle.

Answers

it occur kinetic energy

when breaking in a hybrid

vehicle.

hope it helps

Answer:

it occur kinetic energy when breaking in a hybrid

vehicle .

hope it is helpful to you ☺️

The ratio of output power yo input power, in percent, is called

Answers

The ratio of output power to input power for a machine is called the machine's efficiency. It doesn't have to be expressed in percent.

What is the final speed of a lion initially running at a speed of 30 m/s, if it accelerates ata rate of 3 m/s3 for 5 seconds?

Answers

The final speed of a lion running 30 m/s accelerates at a rate of 3 m/s3 for 5 seconds it’s 3.2
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