What is meant by the wavelength of light? By its frequency? Explain how they are related to each other
What will be an ideal response?
The wavelength is the distance between successive wave crests, while the frequency is the number of waves that pass the observer per second. All forms of EM radiation travel in a vacuum at 300,000 km/sec., and this velocity is the product of the wavelength X the frequency of the radiation.
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The allowed shapes for the orbits of objects responding only to the force of gravity are
A) ellipses, parabolas, and hyperbolas. B) ellipses only. C) ellipses, spirals, and parabolas. D) circles and ellipses.
An electron with a charge value of 1.6 × 10^?19 C is moving in the presence of an electric field of 400 N/C. What force does the electron experience?
a. 8.0E–21 N b. 6.4E–22 N c. 6.4E–17 N d. 4.0E+17 N e. 1.6E–17 N
Which of these gases are outgassed from our volcanic eruptions?
A) oxygen, methane, ammonia B) carbon dioxide, water vapor, oxygen C) ammonia, water vapor, oxygen D) water vapor, methane, carbon dioxide E) helium, carbon dioxide, methane
For flow over a slightly curved isothermal surface, the temperature distribution inside the boundary layer ?t may be approximated by the polynomial
where y is the distance normal to the surface.
(a) By applying appropriate boundary conditions, evaluate the constants a, b, c, and d.
(b) Then obtain a dimensionless relation for the temperature distribution in the boundary layer.
GIVEN
Flow over a slightly curved isothermal surface
Polynomial temperature distribution:
FIND
(a) The values for a, b, c, and d
(b) A dimensionless relation for the temperature distribution in the boundary layer
SKETCH
