Calculate the number of atoms per unit volume in BCC solid sodium (Na) assuming that the lattice parameter for sodium is 0.428 nm.
What will be an ideal response?
Since sodium is BCC the volume of a unit cell is
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If the mass of an object does not change, a constant net force on the object produces constant
A) velocity. B) acceleration. C) both of these D) none of the above
A spherical conductor of radius 2.0 mm carries a charge of 7.1 nC. What is the magnitude of the electrical field at 6.0 mm from the center of the sphere? (k = 1/4??0 = 9.0 × 109 N ? m2/C2 )
A) 89 × 106 N/C B) 25× 106 N/C C) 1.8 × 106 N/C D) 780 × 106 N/C E) 0.89 × 106 N/C
Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length L2, how do L1 and L2 compare if wire 1 is made from copper and wire 2 is made from aluminum? The resistivity of copper is 1.7 × 10^–5 ?·m and the resistivity of aluminum is 2.82 × 10^–5 ?·m
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After an electron has been accelerated through a potential difference of 0.15 kV,
what is its de Broglie wavelength? (e = 1.60 × 10-19 C, melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s) A) 0.10 nm B) 1.0 nm C) 1.0 mm D) 1.0 cm