Using graphical techniques, determine the temperature distribution through the concrete slab shown after one hour. The slab is subjected to 10 W/m^2 of heat at the surface, assuming a constant temperature gradient at the surface.
What will be an ideal response?
Physics & Space Science
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Estimate how many pennies you would have to stack to reach from the floor to an average 8-ft ceiling
A) 2 × 103 B) 2 × 102 C) 2 × 104 D) 2 × 105 E) 2 x 106
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What is the uncorrected near point of a person who has a near point that is 25 cm from his eyes when he is wearing 3.33-diopter contact lenses?
A) 1.9 m B) 0.75 m C) 0.60 m D) 1.5 m E) 0.50 m
Physics & Space Science
Of the many possible nucleotides, the DNA used in living organisms on Earth uses how many?
A) 20 B) 4 C) 5 D) 23
Physics & Space Science
•At the initial instant the universe contains
• (a) atoms (b) Protons (c) Electons (d) photons
Physics & Space Science