I'm not quite sure what you mean by this. What I'm understanding is that because there are more neutrons than protons, then the nucleus becomes unstable. A stable nucleus has an even amount of neutrons and protons. So because there are more neutrons than protons, the neutron must change to a...
If it undergoes β- then it would look like this: 24 11Na -> 24 12 Mg + β- + antineutrino
If it undergoes β+ then it would look like this: 21 11Na -> 24 10 Ne + β+ + neutrino
Knowing this, I'm not sure how to proceed.
Homework Statement
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The problem states that 24 11Na is radioactive. The question asks if it's a β- or β+ emitter. The 24 is the atomic mass number and the 11 is the atomic number.
Homework Equations
I know that in β- decay, the atomic number increases by 1 and it emits an electron and...
Homework Statement
Two point charges are placed on the x axis.(Figure 1)The first charge, q1 = 8.00 nC , is placed a distance 16.0 m from the origin along the positive x axis; the second charge, q2 = 6.00 nC , is placed a distance 9.00 m from the origin along the negative x axis.
Find the...
Well I thought the answer was Tb = bFsin (pi/2-θ) but that's obviously wrong. I would like to know why. My homework says that alpha is the angle between r vector and F vector therefore I thought that it would be pi/2-θ.
Homework Statement
What is the torque τB about axis B due to the force F⃗ ? (B is the point at Cartesian coordinates (0,b), located a distance b from the origin along the y axis.)
Express the torque about axis B in terms of F, θ, ϕ, π, and/or other given coordinate data.
Homework Equations...
Ok, I actually figured out how to find the acceleration while on the incline.
It was a = 9.8sin(28) - (0.18)(9.8)cos(28) which equaled 3.04 m/s^2
But now I'm having trouble figuring out how to find the acceleration while on a flat surface.
So this is my first time posting on here and I hope I'm doing right!
1. Homework Statement
A 75-kg snowboarder has an initial velocity of 5.0 m/s at the top of a 28 ∘ incline. After sliding down the 110-mlong incline (on which the coefficient of kinetic friction is μk = 0.18), the snowboarder...