The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature of
a. gravitation
b. fractals
c. air resistance
d. dynamical chaos
e. quantum mechanics
D
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Liquid sodium is to be heated from 500 K to 600 K by passing it at a flow rate of 5.0 kg/s through a 5-cm-ID tube whose surface is maintained at 620 K. What length of tube is required?
GIVEN
FIND
The length of tube (L) required
ASSUMPTIONS
Surface temperature is constant and uniform
SKETCH
PROPERTIES AND CONSTANTS
for liquid sodium at the average bulk temperature of 550 K
The primary source of the Sun's energy is:
A) oxidation of carbon in the core. B) gravitational collapse of the helium coreward. C) dark energy. D) the strong force fusing hydrogen into helium. E) the weak force creating energy from uranium decay.
Samples of the Earth's molten outer core come directly through the mantle, pour out of volcanoes, and can be studied in labs
Indicate whether the statement is true or false
The concept of the dual nature of light indicates that electromagnetic waves sometimes act like ______________
Fill in the blank(s) with correct word