Alarge nickel plate, 1 mm thick, is heated on both sides by flowing air and loaded in tension to one-half of its failure stress. laboratory tests on small nickel plates, carried out under operating conditions, give a parabolic rate constant of 109 kg2 m4 s1 a) use dimensional analysis to work out how the rate constant given relates to other parameters b) what thickness would need to be oxidised way on each face for the plate to reach its failure stress, assuming that the oxide formed can support no load? estimate the maximum lifetime of the plate under these conditions. during operation, it is observed that the oxide layer spalls off approximately every month. why might this be expected? in the light of this, modify your estimate of the lifetime. c) d)

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.

For questions 1 and 2, consider the following experimental data.hydrogen emission lines were detected at the following wavelengths (in nm): 121.6102.697.395.093.8question 1use the electromagnetic radiation classifications below and figure 1-1 in the introductory information for this lab (in the lab manual) to determine the nf value for the experimental data provided? wavelength, ? (nm) 650 700 550 600 400 450 500 visible spectrum wavelength, ? (m) 11 10 3 10 10 10 8 10 5 10 10 -10 10 9 10 10 10 10 -12 10 microwave radio infrared x-ray ultraviolet gamma 1020 1019 1018 1 1016 015 1014 01 12 109108 frequency, v (hz)a.1b. 2c. 3d. 4e. 5question 2using the data for the emission line with the longest wavelength, the known value of nf (from question 1 in this prelab), and the value of ni (deduced from the ? and nf values) calculate the rydberg constant for hydrogen (rh) in units of m-1.a) 1.097 x 10-11 m-1b) 5.921 x 107 m-1c) 1.097 x 10-2 m-1d) 9.252 x 106 m-1e) 1.097 x 107 m-1