subject
Physics, 18.05.2021 06:50 katiemh8302

The mass of helium atoms are higher than predicted given the number of protons. Helium atoms have an actual mass of about 4 amu. In fact, most atoms seem to be too heavy. Lithium is known to have 3 protons, but a mass of 7 amu, carbon atoms have 6 protons and a mass of 12 amu. Rutherford proposed the idea that there could also be another particle in the nucleus with the protons. He thought these particles would be neutral and named them neutrons.

How does the idea of a neutron help address the puzzles about the protons in the nucleus and the mass of atoms?


The mass of helium atoms are higher than predicted given the number of protons. Helium atoms have a

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
question
Physics, 22.06.2019 15:30
The movement of electrons between atoms is called an
Answers: 2
question
Physics, 22.06.2019 16:30
In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.
Answers: 3
question
Physics, 23.06.2019 02:20
Aflute player hears four beats per second when she compares her note to a 523 hz tuning fork (the note c). she can match the frequency of the tuning fork by pulling out the “tuning join” to lengthen her flute slightly. what was her initial frequency?
Answers: 2
You know the right answer?
The mass of helium atoms are higher than predicted given the number of protons. Helium atoms have an...
Questions
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
question
Mathematics, 03.05.2021 03:00
Questions on the website: 13722359