The lattice spacing of the principal Bragg planes in sodium chloride is 0.282 nm. For what wavelength of x-rays will the first order reflected beam diffract at 55° with respect to the normal to the crystal planes?
A) 0.323 nm
B) 0.530 nm
C) 0.662 nm
D) 0.150 nm
E) 0.462 nm
A
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Jupiter's ______________ and ______________ are the ingredients needed to generate its very large magnetic field
Fill in the blank(s) with correct word
The Van Allen belts are cloud layers in the jet streams of the stratosphere, similar to the belts that Galileo saw on Jupiter
Indicate whether the statement is true or false
Identical point charges (+50 mC) are placed at the corners of a square with sides of 2.0-m length. How much external energy is required to bring a fifth identical charge from infinity to the geometric center of the square?
a. 41 J b. 16 J c. 64 J d. 10 J e. 80 J
Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greatest when
a. the plane of the loop is parallel to the magnetic field. b. the plane of the loop is perpendicular to the magnetic field. c. the magnetic flux through the loop is a maximum. d. the plane of the loop makes an angle of 45° with the magnetic field.