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adoni [48]
4 years ago
6

In nuclear fission, a nucleus splits roughly in half. (a) What is the electric potential 5.24 10-14 m from a fragment that has 3

6 protons in it? V (b) What is the electric potential energy in MeV of a similarly charged fragment at this distance?
Physics
1 answer:
yKpoI14uk [10]4 years ago
4 0

Answer:

Part A:

Electric potential =V=9.8821*10^5 V

Part B:

Electric Potential Energy=U=35.57556 MeV

Explanation:

Part A:

Charge on the fragment that has 36 Protons in it:

Charge on single roton=1.6*10^{-19} C

Charge on 36 protons=36*1.6*10^{-19} C

Charge on 36 protons=5.76*10^{-18}\ C

Distance=r=5.24*10^{-14}\ m

Formula For electric potential V:

V=\frac{kQ}{r}

Where

k is coulomb constant=8.99*10^9\ N.m^2/C^2

r is the distance

Q is the charge on 6 protons

V=\frac{5.76*10^{-18}*8.99*10^9}{5.24*10^{-14}}\\V=988213.7405 V\\V=9.8821*10^5 V

Electric potential =V=9.8821*10^5 V

Part B:

Electric Potential Energy=U

U=q*V

V is the electric potential

q is the number of protons

U=36*9.8821*10^5 \\U=35575560 eV\\U=35.57556 MeV

Electric Potential Energy=U=35.57556 MeV

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T₃ = 29.4N

Plug in known values into Eq. 1 and Eq. 2:

Eq. 1: T₁sin(38.0) + T₂sin(52.0) - 29.4 = 0

Eq. 2: T₂cos(52.0) - T₁cos(38.0) = 0

We can solve for T₁ and T₂ by use of substitution. First let us rearrange and simplify Eq. 2 like so:

T₂cos(52.0) = T₁cos(38.0)

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Now that we have T₂ isolated, we can substitute T₂ in Eq. 1 with 1.28T₁:

T₁sin(38.0) + 1.28T₁sin(52.0) - 29.4 = 0

Rearrange and simplify, and solve for T₁:

T₁(sin(38.0) + 1.28sin(52.0)) = 29.4

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T₂ = 1.28T₁

Plug in T₁ = 18.1N and solve for T₂:

T₂ = 1.28×18.1

T₂ = 23.2N

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Again, choose the point where the ropes intersect and write equations of static equilibrium involving the forces acting at that point:

Sum up the vertical components of the forces

∑Fy = 0

Eq. 3: T₁sin(θ₃) - T₃ = 0

Sum up the horizontal components of the forces

∑Fx = 0

Eq. 4: T₂ - T₁cos(θ₃) = 0

Right away we can solve for T₃, which is the force of gravity acting on m₂:

T₃ = m₂g, m₂ = 6.00kg, g = 9.81m/s²

T₃ = 6.00×9.81

T₃ = 58.9N

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Plug in known values into Eq. 4:

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Vector A has magnitude of 8units and makes an angle of 45° with the positive x-axis. Vector B also has the same magnitude of 8un
iragen [17]

Answer:

Explanation:

Because vectors have direction and x and y components you can't just add them and say that their length is 16 because A is 8 units and so is B. What you're actually finding is the magnitude and direction of the vector that results from this addition. The magnitude is the length of the resultant vector, which comes from the x and y components of A and B, and the direction is the angle between the resultant vector and the positive x axis. To add the vectors, then, we need to find the x and y components of each. We'll do the x components of A and B first so we can add them to get the x component of C. Since x values are directly related to cos, the formula to find the x components of vectors is

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A_x=8.0cos45 so

A_x=5.7 and for B:

B_x=8.0cos180 since the negative x axis is the 180 degree axis and

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C_x=-2.3

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A_y=8.0sin45 so

A_y=5.7 and

B_y=8.0sin180 so

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C_y=5.7

Now for the final magnitude:

C_{mag}=\sqrt{(-2.3)^2+(5.7)^2} and

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The x component of C is positive and the y component is negative, which means that the direction has us at an angle is quadrant 2; we add 180 to whatever the angle is. Finding the angle:

tan^{-1}(\frac{C_y}{C_x})=(\frac{5.7}{-2.3}) = -68 + 180 = 112 degrees

The resultant vector of A + B has a magnitude of 6.1 and a direction of 112°

Do the same thing for subtraction, except if you're subtracting B from A, the direction that B is pointing has to go the opposite way. That means that A doesn't change anything at all, but B is now pointing towards 0.

A_x=5.7 (doesn't change from above)

B_x=8.0cos0 and

B_x=8.0 so

C_x=13.7 and

A_y=5.7 (also doesn't change from above)

B_y=8.0sin0 so

B_y=0 and

C_y=5.7 and for the magnitude:

C_{mag}=\sqrt{(13.7)^2+(5.7)^2 so

C_{mag}=15units and for the direction:

tan^{-1}(\frac{5.7}{13.7})=23 and since both x and y components of C are in Q1, we add nothing.

And you're done!!!

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