|| Two crates, A and S, sit at rest side by side on a frictionless horizontal surface. The crates have masses m A and m B . A horizontal force F → is applied to crate A and the two crates move off to the right. (a) Draw clearly labeled free-body diagrams for crate A and for crate A . Indicate which pairs of forces, if any, are third-law action-reaction pairs. (b) If the magnitude of force F → is less than the total weight of the two crates, will it cause the crates to move? Explain.
|| Two crates, A and S, sit at rest side by side on a frictionless horizontal surface. The crates have masses m A and m B . A horizontal force F → is applied to crate A and the two crates move off to the right. (a) Draw clearly labeled free-body diagrams for crate A and for crate A . Indicate which pairs of forces, if any, are third-law action-reaction pairs. (b) If the magnitude of force F → is less than the total weight of the two crates, will it cause the crates to move? Explain.
|| Two crates, A and S, sit at rest side by side on a frictionless horizontal surface. The crates have masses mA and mB. A horizontal force
F
→
is applied to crate A and the two crates move off to the right. (a) Draw clearly labeled free-body diagrams for crate A and for crate A. Indicate which pairs of forces, if any, are third-law action-reaction pairs. (b) If the magnitude of force
F
→
is less than the total weight of the two crates, will it cause the crates to move? Explain.
Fresnel lens: You would like to design a 25 mm diameter blazed Fresnel zone plate with a first-order power of
+1.5 diopters. What is the lithography requirement (resolution required) for making this lens that is designed
for 550 nm? Express your answer in units of μm to one decimal point.
Fresnel lens: What would the power of the first diffracted order of this lens be at wavelength of 400 nm?
Express your answer in diopters to one decimal point.
Eye: A person with myopic eyes has a far point of 15 cm. What power contact lenses does she need to correct
her version to a standard far point at infinity? Give your answer in diopter to one decimal point.
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.
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
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