How Do You Calculate Specific Charge Without Given Charge and Mass?

  • Thread starter Thread starter LouPhyGENIU
  • Start date Start date
  • Tags Tags
    Charge Specific
AI Thread Summary
To calculate the specific charge of a nucleus without given charge and mass, use the atomic notation, such as carbon-12 (C-12), where the top number (12) represents the total number of protons and neutrons, and the bottom number (6) indicates the number of protons. The charge of the nucleus can be determined by multiplying the number of protons by the charge of a proton, while the mass can be approximated based on the total number of nucleons. Specific charge is defined as the ratio of charge (in Coulombs) to mass (in kilograms). By converting the charge and mass into the appropriate units, you can compute the specific charge. Understanding these relationships is crucial for solving problems related to specific charge in AS Level Physics.
LouPhyGENIU
Messages
2
Reaction score
0
Specific Charge AS Level HELP??!

Hi, RIGHT, I am in desperate need of help I am attempting to teach myself Specifiction A AQA AS Physics and need help with how to figure out the specific charge of a nucleus when the charge and mass are not stated.
It is hard to explain without diagrams but if a nuclus is given, for example C with a small 12 on top and a small 6 on the bottom how would you work out the specific charge for this because my textbook says that you can only work out specific charge if you have the charge and the mass? Hope this makes a vague amount of sense and I may be being very silly but i need someone to explain this to me at a very basic level!
 
Physics news on Phys.org
"Specific charge" is the ratio of charge to mass for the nucleus (apparently expressed in coulombs/kg). What do the '12' and the '6' represent in the symbol for carbon-12 that you are describing?
 
Um they are the number of protens and neutrons (the number on top) and the number of protons (number on bottom) This is very basic AS Level Physics just don't know how to work out the specific charge from those two numbers!
 
LouPhyGENIU said:
Um they are the number of protens and neutrons (the number on top) and the number of protons (number on bottom) This is very basic AS Level Physics just don't know how to work out the specific charge from those two numbers!
Well, using those two numbers you can work out the charge of the nucleus, what is the charge of a proton and a neutron? You can also work out the mass of the nucleus.
 
LouPhyGENIU said:
Um they are the number of protens and neutrons (the number on top) and the number of protons (number on bottom) This is very basic AS Level Physics just don't know how to work out the specific charge from those two numbers!

All right, so what is the charge of the nucleus (what does the '6' also stand for)? You will want to convert that amount of charge into units of Coulombs.

If the number of protons and neutrons is 12, what is the mass of the nucleus? You will ultimately want to convert that into units of kilograms.

The specific charge is the ratio of the charge in Coulombs to the mass in kilograms.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

What Am I Doing Wrong in Calculating Potential on a Grid?
Replies
10
Views
2K
Point charge with very thin metal sheet along a spherical surface
Replies
21
Views
2K
Investigating the Charge Distribution on a Bulging Sphere
Replies
18
Views
2K
Calculating Charge of an Electron w/ the Millikan Oil Drop Experiment
Replies
12
Views
2K
Understanding Fundamentals of Electronics: Solving an Electric Charge Problem
Replies
11
Views
2K
Method of mirroring - metal plates
Replies
11
Views
2K
Van der Graaf Generator: Charge, Potential and Redesign Questions
Replies
8
Views
2K
How Do You Calculate Capacitance in a DC Circuit with a Fully Charged Capacitor?
Replies
3
Views
1K
Question about charged particle in an electric field
Replies
5
Views
2K
Y coordinate of a charged particle
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top