The lunar rocks brought back by the Apollo astronauts contained a surprisingly large amount of water
a. True
b. False
Indicate whether the statement is true or false
False
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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
A skydiver of 75-kg mass has a terminal velocity of 60 m/s. At what speed is the resistive force on the skydiver half that when at terminal speed?
A. 15 m/s B. 49 m/s C. 30 m/s D. 42 m/s E. 36 m/s
The sidereal period of the Moon is
a. about 27.32 days long. b. the period of time for the Moon to orbit Earth once with respect to the stars. c. the period of time between successive eclipses at a given location on Earth. d. the period of time from when the Moon rises until the Moon rises again the next night. e. about 27.32 days long and the period of time for the Moon to orbit Earth once with respect to the stars.
The electric field in the region defined by the y-z plane and the positive x axis is given by E = ax, where a is a constant. (There is no field for negative values of x.) As x increases in magnitude, relative to V = 0 at the origin, the electric potential in the region defined above is
a. a decreasing function proportional to ?|x2|. b. a decreasing function proportional to ?|x|. c. constant. d. an increasing function proportional to +|x|. e. an increasing function proportional to +|x2|.