Which would have the higher activation energy for diffusion, carbon in iron or nickel in iron? The atomic radius of carbon is 0.077 nm, the atomic radius of nickel is 0.124 nm, and the atomic radius of iron is 0.124 nm. _____________
Fill in the blank(s) with the appropriate word(s).
Nickel in iron
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Each 2.0-m length of a long cylinder (radius = 4.0 mm) has a charge of 4.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point 5.0 mm from the axis of the cylinder?
a. 9.9 kN/C b. 8.1 kN/C c. 9.0 kN/C d. 7.2 kN/C e. 18 kN/C
Which types of galaxies lack an ordered structure of stellar orbits?
a. elliptical galaxies only b. spiral galaxies only c. irregular galaxies only d. elliptical and irregular galaxies e. spiral and irregular galaxies
What is the change in entropy of the lead when 2.0 kg of molten lead solidifies? [Data: Lv = 207. kcal/kg at 1744°C; Lf = 5.9 kcal/kg at 328.°C]
What will be an ideal response?
A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 9.00 s. What distance will the sports car travel during the 9.00 s acceleration period?