A(n) ______________ is an elementary particle with a charge of +1.6 × 10^-19 coulomb
Fill in the blank(s) with correct word
proton
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The room-temperature yield strength of very-low-carbon steel as a function of the square root of the interstitial solid-solution carbon concentration is shown in Figure 7.12.
(a) Evaluate all of the constants in the equation for the tensile yield strength as a function of solid-solution chemical composition. (b) The maximum equilibrium composition of interstitial carbon possible in ferritic iron is 0.0011 atom fraction (af). If an iron-carbon alloy of this composition could be produced at room temperature, what should the yield strength be? You must solve this problem analytically; you can check your result graphically. (c) If the composition of 0.0011 af of carbon is exceeded, the extra carbon forms iron carbide. If a specimen is produced with 0.0015 af of carbon, do you expect the strength to be given by an extension of the line in the figure? Briefly explain your answer.
A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
A) 0.93 Hz B) 0.00026 Hz C) 1.1 Hz D) 6.8 Hz E) 0.15 Hz
A star has a parallax of 0.04 arc seconds. What is its distance?
A. 25 light-years B. 4 parsecs C. 4 light-years D. 25 parsecs
A container of water is lifted vertically 3.0 m, then returned to its original position. If the total weight is 30. N, how much work was done?
A) 0.18 kJ B) 45 J C) 90 J D) No work was done. E) 0.90 kJ