A ballerina begins a tour jeté (Fig. 11-19 a ) with angular speed ω i and a rotational inertia consisting of two parts: I leg = 1.44 kg·m 2 for her leg extended outward at angle θ = 90.0° to her body and I trunk = 0.660 kg·m 2 for the rest of her body (primarily her trunk). Near her maximum height she holds both legs at angle θ = 30.0° to her body and has angular speed ω f (Fig. 11-19b). Assuming that I trunk has not changed, what is the ratio ω f / ω i ?
A ballerina begins a tour jeté (Fig. 11-19 a ) with angular speed ω i and a rotational inertia consisting of two parts: I leg = 1.44 kg·m 2 for her leg extended outward at angle θ = 90.0° to her body and I trunk = 0.660 kg·m 2 for the rest of her body (primarily her trunk). Near her maximum height she holds both legs at angle θ = 30.0° to her body and has angular speed ω f (Fig. 11-19b). Assuming that I trunk has not changed, what is the ratio ω f / ω i ?
A ballerina begins a tour jeté (Fig. 11-19a) with angular speed ωi and a rotational inertia consisting of two parts: Ileg = 1.44 kg·m2 for her leg extended outward at angle θ = 90.0° to her body and Itrunk = 0.660 kg·m2 for the rest of her body (primarily her trunk). Near her maximum height she holds both legs at angle θ = 30.0° to her body and has angular speed ωf (Fig. 11-19b). Assuming that Itrunk has not changed, what is the ratio ωf/ωi?
Paraxial design of a field flattener. Imagine your optical system has Petzal curvature of the field with radius
p. In Module 1 of Course 1, a homework problem asked you to derive the paraxial focus shift along the axis
when a slab of glass was inserted in a converging cone of rays. Find or re-derive that result, then use it to
calculate the paraxial radius of curvature of a field flattener of refractive index n that will correct the observed
Petzval. Assume that the side of the flattener facing the image plane is plano. What is the required radius of
the plano-convex field flattener? (p written as rho )
3.37(a) Five free electrons exist in a three-dimensional infinite potential well with all three widths equal to \( a = 12 \, \text{Å} \). Determine the Fermi energy level at \( T = 0 \, \text{K} \). (b) Repeat part (a) for 13 electrons.
Book: Semiconductor Physics and Devices 4th ed, NeamanChapter-3Please expert answer only. don't give gpt-generated answers, & please clear the concept of quantum states for determining nx, ny, nz to determine E, as I don't have much idea about that topic.
3.37(a) Five free electrons exist in a three-dimensional infinite potential well with all three widths equal to \( a = 12 \, \text{Å} \). Determine the Fermi energy level at \( T = 0 \, \text{K} \). (b) Repeat part (a) for 13 electrons.
Book: Semiconductor Physics and Devices 4th ed, NeamanChapter-3Please expert answer only. don't give gpt-generated answers, & please clear the concept of quantum states for determining nx, ny, nz to determine E, as I don't have much idea about that topic.
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