A(n) _____________material has properties that are equal in three perpendicular directions.
Fill in the blank(s) with the appropriate word(s).
isotropic
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"Absolute Zero" is how many Fahrenheit degrees below freezing (water)?
What will be an ideal response?
Consider two different isotopes of the same neutral element. Which statements about these isotopes are true? (There may be more than one correct choice.)
A) Both isotopes contain the same number of orbital electrons. B) The sum of the protons and neutrons is the same for both isotopes. C) Both isotopes contain the same number of protons. D) Both isotopes contain the same number of neutrons. E) Both isotopes contain the same number of nucleons.
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
What is the radius of the smallest Bohr orbit?
A) 2.14 × 10-9 m B) 1.12 × 10-9 m C) 1.56 × 10-11 m D) 3.17 × 10-11 m E) 5.29 × 10-11 m