What is the critical angle for light traveling from crown glass (n = 1.52) into water (n = 1.33)?
A) 42°
B) 48°
C) 53°
D) 57°
E) 61°
Answer: E
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Consider one-dimensional transient conduction with a convection boundary condition in which the ambient temperature near the surface is a function of time. Determine the energy balance equation for the boundary control volume. How would the solution method need to be modified to accommodate this complexity?
GIVEN One-dimensional transient conduction where the ambient temperature near the surface is a function of time FIND (a) The difference equation for the boundary control volume and explain how to solve the problem
What is the unified model of active galactic nuclei? How does it explain differences in the continuous spectrum and emission lines of an active galactic nucleus?
What will be an ideal response?
Matter Waves: A certain crystal has a spacing of 0.442 nm between atoms. A beam of neutrons moving with a speed of 1640 m/s perpendicular to the surface is diffracted as it passes through the crystal. What is the angle from the central maximum to the next interference maximum? (mneutron = 1.675 × 10-27 kg, h = 6.626 × 10-34 J ? s)
A. 17.0° B. 21.0° C. 33.1° D. 60.0° E. 90.0°
The pressure inside a commercial airliner is maintained at 1 atm (1.01 × 10^5 N/m2). What is the outward force exerted on a 1.0 m × 2.0 m cabin door if the outside pressure (at 10-km height) is 0.3 atm?
a. 1.4 × 10^2 N b. 1.4 × 10^3 N c. 1.4 × 10^4 N d. 1.4 × 10^5 N e. 7.0 × 10^3 N