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A shaft consisting of an aluminum segment and a steel segment is acted upon by two torques. The shaft is fixed to the wall at point C. The cross sectional diameter of the aluminum section is 60 mm and the cross sectional diameter of the steel section is 40 mm. The shear modulus for aluminum is G_aluminum = 28 GPa and the shear modulus for steel is G_steel = 83 GPa. If the value of T = 700 N-m, calculate the angle of twist at point A. Provide your answer in units of radians. 2T T C B A Aluminum Steel 800 mm 600 mm
The reaction, 2NO(g) + O2(g) → 2NO2(g), was found to be first order in each of the two reactants and second order overall. The rate law is therefore O rate = k[NO]2 O rate = k[NO][O2] O rate = k[NO]2[O2]2 O rate = k([NO][O2])2 O rate = k[NO2]2[NO]-2[O2]-% Save for Later Attempts: 0 of 4 used Submit Answer
What is the atomic packing ratio of alpha-Sn? Reminder: diamond structure is FCC with two atoms in each atomic basis, which consists of one Sn atom at the (0, 0, 0) corner and a second the Sn atom located at (a/4, a/4, a/4).
What is the ex-dividend present value of a firm's current and future earnings if the interest rate is 7%, the expected growth rate of the firm is 4%, and the firm's current profits are $75 million? Multiple choice question. $2,600 million $80.25 million $2,675 million
a. For any given material with atomic mass A (with A > 1), what is the minimum value of energy to which a neutron can be reduced? What is the maximum possible energy loss in terms of $\alpha = \left(\frac{A-1}{A+1}\right)^2$? (2 points) b. What is the material which can force the neutron to lose almost all its energy in a single scattering reaction (collision)? Show how. (2 points)
Current Attempt in Progress Which of the following describes a chemical property? A property based solely on the scientific method. A property which describes a change in composition that a substance undergoes. A property which is considered hypothetical. A property which is based on a particular scientific law. A property which cannot be seen.
2. (2 points each) The probability of being enrolled in a statistics course at the college is 0.24. The probability of being enrolled in Professor Pelton's courses at the college is 0.035. The probability of being enrolled in Professor Pelton's statistics course at the college is 0.02. Let $S$ be the event of being enrolled in a statistics course at the college. Let $C$ be the event of being enrolled in one of Pelton's courses at the college. Determine each of the following: a. $P(S')=$ b. $P(C \cap S)=$ c. $P(C \cup S)=$ d. $P(C|S)=$ e. $P(S|C)=$ f. Are $S$ and $C$ mutually exclusive? Explain your reasoning. g. Are $S$ and $C$ independent? Explain your reasoning.
Question 14 of 40 View Policies Show Attempt History Current Attempt in Progress Nicotinic acid, $HC_6H_4NO_2$, is a B vitamin. It is also a weak acid with $K_a = 1.4 \times 10^{-5}$. Calculate $[H^+]$ and the pH of a 0.038 M solution of $HC_6H_4NO_2$. $[H^+] = $ Your answer is incorrect. eTextbook and Media Hint Consider using an assumption to solve this rather than the quadratic formula.
Which of these protein do not play a role in rna transcription
Can someone help me explain this please? chloride NHCl including the states and the H value [2m] Net Equation AHne