He first discovered that gravity exist between all objects
What is Newton
100
This famous scientist first discovered that there are two types of charges and these charges are merely opposites.
Who is Ben Franklin
100
The four major parts of the atom.
What is the proton, neutron, electron and nucleus
100
This number of half-lives caused an orignal sample of 400g of Iodine to decay to 12.5g of Iodine in 25 hour.
What is 5 half-lives
100
Universal gravity and the electric force both depend on this common factor.
What is distance
200
Newton determined a direct proportion between the force of gravity and this physical property.
What is mass
200
Two balloons both with excess negative charge are brought close to each other causing this observable reaction between the balloons.
What is repulsion
200
The atomic number of carbon is 6 and the atomic mass number is 12. This means a neutral element of carbon has this many protons in the nucleus.
What is 6
200
Beta and gamma are two types of radioactive decay, leaving only the other type stopped by skin and paper.
What is alpha decay.
200
The distance between two charges increases from 2cm to 4cm making the electric force between them decrease by
What is 1/4
300
What happened to the mass of an asteriod if the gravitational attraction increased from 2000N to 4000N?
What is the mass doubled
300
These two invisible charges are brought together and are attracted to each other. The charges are
What is positive and negative
300
Cl has 35 subatomic particles in its nucleus. There are 17 electrons in the shell around the nucleus. How many neutrons are in the nuclues of an atom of Cl.
What is 18
300
Th90/234 is the product of an alpha decay of this extremely radioactive material (X)
What is U92/238
300
He is produced during a nuclear reaction where two smaller nuclei combine in this nuclear reaction.
What is Fusion
400
This factor causes the gravitational attraction between two objects to decrease by the square of X.
What is distance
400
Two metal spheres touch and and have a total charge of -16, after seperating the charge on both spheres will be this negative number.
What is -8
400
This force is the strongest of all universal forces and works only on the protons and nuetrons. Not even gravity is stronger than this universal force.
What is the strong nuclear force
400
When writing nuclear equations the mass of x is greater than the sum of the masses of
What is y and z
400
The mass of an object is cut in half causing the gravitational attraction to decrease from 500N to this force in Newtons
What is 250
500
The gravitational force between the Sun and Moon is 500N if the distance between the two is cut in half the new gravitational force is this in Netwons.
What is 2000
500
Objects can become negatively or positively charged by gaining or loosing this extremely small charge.
What is an electron or negative charge.
500
Carbon 14 has a half life of 5,700 years. If a fossil sample is dated to be 11,400 years old, how much of the original 100% carbon-14 is remaining in the fossil?
What is 25%
500
When Uranium 92/238 is hit with a fast moving electron large amounts of energy are released in this nuclear reaction.
What is Fission
500
Einstein's famous equation is a balance of these two quantities E=mc2