The term age of ancient life is sometimes used to refer to the ______________ era
Fill in the blank(s) with correct word
Paleozoic
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____ is the thermonuclear fusion of hydrogen to form helium operating in the cores of massive stars on the main sequence
a. The CNO cycle b. The proton-proton chain c. Hydrostatic equilibrium d. The neutrino process e. none of the above
A square plate has an area of 29.00 cm2 at 20.0°C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2 . What area must be removed form the plate at 20.0°C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 × 10^-6 (°C)-1.)
a. 0.079 3 cm2 b. 0.159 cm2 c. 0.238 cm2 d. 0.841 cm2 e. 0.921 cm2
How should the control volume method be implemented at an interface between two materials with different thermal conductivities? Illustrate with a steady, one-dimensional example. Neglect contact resistance.
GIVEN
Interface between two different materials with different thermal conductivities
FIND
(a) Difference equation at the interface
ASSUMPTIONS
No heat generation
SKETCH
The angular resolution of a telescope is never less than its diffraction limit
Indicate whether the statement is true or false