Asked Nov 26, 2019

Long and strong Conclusion about radioactivity


Expert Answer

Step 1

Radioactive decay involves the spontaneous transformation of one element into another. The only way that this can happen is by changing the number of protons in the nucleus (an element is defined by its number of protons). There are a number of ways that this can happen and when it does, the atom is forever changed. There is no going back -- the process is irreversible.

Step 2

(1) There are three primary types of radiation :

(1) Alpha - these are fast moving helium atoms. They have high energy, typically in the MeV range, but due to their large mass, they are stopped by just a few inches of air, or a piece of paper.

(2) Beta - these are fast moving electrons. They typically have energies in the range of a few hundred keV to several MeV. Since electrons are might lighter than helium atoms, they are able to penetrate further, through several feet of air, or several millimeters of plastic or less of very light metals.

(3) Gamma - these are photons, just like light, except of much higher energy, typically from several keV to several MeV. X-Rays and gamma rays are really the same thing, the difference is how they were produced. Depending on their energy, they can be stopped by a thin piece of aluminum foil, or they can penetrate several inches of lead.


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in




Related Physics Q&A

Find answers to questions asked by student like you

Show more Q&A add

Q: Two blocks are connected by massless string that is wrapped around a pulley. Block 1 has a mass m1=6...

A: Draw the free body diagram of the pulley and masses.


Q: 10 An object falls freely from rest near the surface of Earth. What is the speed of the object when ...

A: Write the kinematic expression for final velocity


Q: A brick is thrown upward from the top of a building at an angle of 10° to the horizontal and with an...

A: The vertical component of velocity of the brick is vsin(theta). The angle inclined with horizontal i...


Q: The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in...

A: Time taken by impulse to reach the brain is,


Q: On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11 000...

A: Given:Altitude = 3.35 kmNumber of balloons = 600Radius of balloon = 0.58 mMass of each balloon = 0.2...


Q: The speed of sound in air is about 340 m/s. If you play concert A (440 Hz) on your instrument,  A) w...

A: A) Wavelength is,


Q: To test the speed of a bullet, you create a pendulum by attaching a 5.80 kg wooden block to the bott...

A: Consider the situation in the diagram below.


Q: Do heavier objects fall more slowly than lighter objects ? Why??

A: No, both lighter and heavier objects fall with the same speed.


Q: A solid sphere of mass 1 kg and radius = 0.1 m (I = MR2/2) rolls down an inclined plane of height = ...

A: The expression for the solid speed of the sphere,