(0.4 points) compute the interplanar spacings for the (110) and (211) families of planes in α-fe. when an x-ray diffraction pattern of pure α-fe is obtained using x-rays with wavelength 0.15418 nm, at what values of the diffraction angle 2θ do the firstorder peaks appear?

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

What practical value did astronomy offer to ancient civilizations?