List as many ideas as you can that will result in increased efficiency in the transport system
What will be an ideal response?
The answers will depend on the students. In the book, we list many ideas in Table
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A mass of 0.40 kg, hanging from a spring with a spring constant of 82 N/m, is set into an up-and-down simple harmonic motion. What is the speed of the mass when moving through a point at 0.05 m displacement? The starting displacement of the mass is 0.10 m from its equilibrium position
a. zero b. 0.36 m/s c. 0.11 m/s d. 1.6 m/s e. 0.72 m/s
The critical angle for total internal reflection is a:
A. is a single angle for which transmission through the boundary is zero B. a maximum angle of incidence, below which no light is transmitted through the boundary C. minimum angle of incidence, above which no light is transmitted through the boundary D. may be either a minimum or a maximum angle, depending on which of the indices of refraction is larger
A light ray is incident on the surface of water (n = 1.33) at an angle of 60° relative to the normal to the surface. The angle of the reflected wave is
a. 80°. b. 40°. c. 20°. d. 60°. e. 30°.
When light goes from one material into another material having a HIGHER index of refraction
A) its speed, wavelength, and frequency all decrease. B) its speed and wavelength decrease, but its frequency stays the same. C) its speed decreases but its wavelength and frequency both increase. D) its speed decreases but its frequency and wavelength stay the same. E) its speed increases, its wavelength decreases, and its frequency stays the same.