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matthew mercado

matthew m.

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In what way has mining and quarrying really driven the increase in trade along GVCs? It was already integrated into GVCs but it's share of global trade has increased dramatically It has become much more integrated into GVCs over time and has continued to account for a large share of global trade US bans on exports of crude oil have been lifted The Russian invasion of Ukraine has meant that countries need to trade energy more

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Provide the missing products in the following reaction sequence. (6 pts) $$Mg$$ $$Br$$ $$Mg \cdot Br$$ $$H_3O^+$$

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A rotating table completes one rotation in 10 sec. and its moment of inertia is 100 kg-m². A person of 50 kg. mass stands at the centre of the rotating table. If the person moves 2m from the centre, the angular velocity of the rotating table (in rad/sec). will be: (1) $\frac{2\pi}{30}$ (2) $\frac{20\pi}{30}$ (3) $\frac{2\pi}{3}$ (4) $2\pi$

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Question 72 (1 point) Saved Listen A mass m hanging on a spring has a natural frequency f. If the mass is increased to 4m, what is the new natural frequency? 1) 4f 2) 2f 3) 0.5f 4) 0.25f Question 73 (1 point)

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Question 7 22 pts In your first industry job, your boss asks you to write a program to average all the IEEE 754 single-precision (32-bit) floating-point numbers stored in binary representation in a file. So, you write a program that sums the values and divides by the number of values, and the average it prints happens to be approximately 3.14. Unfortunately, when you give that to your boss, he explains that he didn't want the mean, but the median value. No problem; you write a second program that computes the median by using bitonic sort to put the numbers into decreasing order and then returns the value from the middle of the sorted file. That returns 8100.5, which your boss thinks is suspiciously far from the mean. To make sure that your sort didn't accidentally change the values, he runs your original mean program on the now sorted file and it prints 12462.7 -- which is not even close to the 3.14 it got from the original file. So, your boss asks you to explain why your mean program now gives a different answer. Assuming both your programs are correct, what happened? Would there be a similar problem if you were doing this with 32-bit 2's complement integer values instead of floats?

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Consider the algebraic expression $-22x^4 + 14 + 18x + 3x^6 + \frac{x^3}{-19}$ What is the degree of this polynomial? Identify the constant term. Identify the leading coefficient. Identify the coefficient of the third degree term. Identify the coefficient of the fourth degree term.

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Find the x-intercept(s) of the given function.\ y = 6x - 9x^2 - 1\ The x-intercept(s) is/are

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Isaac Newton (1642-1727) didn't have TV or a Smartphone, so he spent a lot of time in his lab fooling around. He tried to make lead into gold. He wasn't successful. Being English, he did make tea and did experiments on the temperature of the tea as it cooled while he was messing with more serious chemicals. He was good at multitasking. He found that water cooled exponentially except that it never cooled below room temperature (this makes sense when you think about it) so his equation is slightly different from what we have been using. Instead of the curve approaching the x-axis, it approaches the horizontal axis of the room temperature. This amounts to a vertical shift equal to the room temperature. For the next activity you may have to research on the net to find the equation for Newton's Law of Cooling. Solve the following: 5) Tea water is heated to boiling (100ºC) and cools in a room of 30°C temperature. If the tea is 80ºC after 5 minutes, when will it be 50ºC?

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You need to lift a resistance of 250 lbs. using a first-class lever. The resistance arm is 1'3", which means 1 foot and 3 inches, and the effort is 12.5 lbs. What is the length of the effort arm? EL = RI Effort (E) x Effort Arm (L) = Resistance (R) x Resistance Arm (l)

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For the problems below, you may assume that all (numeric) function input arguments are scalars. Problem 1: (33%) Write a function with the header: function [R, E] = myBisection(f, a, b, tol) which takes as input f: a function handle a: the initial left bracket around a root b: the initial right bracket around a root tol: a tolerance above which the algorithm will keep iterating. The function should return two vectors: R: a vector containing each guess of the root (xNew). E: a vector containing the error (the absolute value of f(xNew)) Tips: \begin{itemize} \item Be sure to include an iteration counter which will stop the while-loop if the number of iterations get greater than 100. \item It is not necessary to print out a convergence table within the while loop. (I.e., there should be no fprintf statements in your code) \end{itemize}

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