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Pearson eText Essential Environment: The Science Behind the Stories -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135213193
Author: Jay Withgott, Matthew Laposata
Publisher: PEARSON+
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Chapter 9, Problem 3SS
To determine
Whether an individual who is trying to preserve an endangered mammal would design a protected area by using corridors, by including a diversity of elevation, by designing a few large reserves or many small ones.
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Pearson eText Essential Environment: The Science Behind the Stories -- Instant Access (Pearson+)
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- 15,148.296 MILIMETERS (MM) = HOW MANY CENTIMETERS (CM)?arrow_forward58,297.29 FT. = HOW MANY MILES (MI)?arrow_forward6.19 Consider a bar of p-type silicon that is uniformly doped to a value of N = 2 x 101 cm³ at 7=300 K. The applied electric field is zero. A light source is incident on the end of the semiconductor as shown in Figure P6.19. The steady-state concentration of excess carriers generated at x = 0 is 8p(0) = Sn(0) = 2 x 104 cm³. Assume the following Light p type x=0 Figure P6.19 | Figure for Problems 6.19 and 6.21. parameters: μ = 1200 cm²/V-s, μp = 400 cm²/V-s, T = 10-6 s, and 7p = 5 × 10-7 s. Neglecting surface effects, (a) determine the steady-state excess electron and hole concentrations as a function of distance into the semiconductor, and (b) calculate the steady-state electron and hole diffusion current densities as a function of distance into the semiconductor.arrow_forward
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- Calculate the compression ratio of an engine with a stroke of 4.2inches a bore of 4.5 inches and a clearance volume of 6.15 cubic inches. Discuss whether or not this is a realistic compression ratio for a street engine and what octane rating of fuel it would need to run correctlyarrow_forwardA half-wave controlled rectifier is supplied by a 230 Vrms voltage source and has load resistance of 2502. Calculate the delay angle a that produces a load-absorbed power of 200W.arrow_forwardDraw shear and moment diagramarrow_forward
- not use ai pleasearrow_forwardDraw the free-body diagram for the pinned assembly shown. Find the magnitude of the forces acting on each member of the assembly. 1500 N 1500 N C 45° 45° 45° 45° 1000 mmarrow_forwardAn elastic bar of length L spins with angular velocity ω about an axis, as shown in the figure below. The radial acceleration at a generic point x along the bar is a(x) = ω 2 x. Due to this radial acceleration, the bar stretches along x with displacement function u(x). The displacement u(x) is governed by the following equations: ( d dx (σ(x)) + ρa(x) = 0 PDE σ(x) = E du dx Hooke’s law (1) where σ(x) is the axial stress in the rod, ρ is the mass density, and E is the (constant) Young’s modulus. The bar is pinned on the rotation axis at x = 0, and it is free at x = L. Determine:1. Appropriate BCs for this physical problem.2. The displacement function u(x).3. The stress function σ(x).arrow_forward
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