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ernest carballo

ernest c.

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What is the primary purpose of fake news? • To inform the public about current events. • To entertain readers with fictional stories. • To spread false information for various motives. • To present alternative viewpoints.

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Pepsinogen is converted into pepsin when mixed with _________________. amylase saliva mucus hydrochloric acid

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Question 5 of 5 A patient is admitted with tachycardia, tachypnea, wheezing, urticaria, and anxiety. Which type of shock is this patient experiencing?

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Determine the values of $x$ for which the function $f$ is decreasing, where $f(x) = (1200 - x)^2 + x^2$. (Enter your answer in interval notation. If you need to enter, $\infty$, type INF.) Use your answer to determine which is bigger: $420^2 + 780^2$ or $540^2 + 660^2$.

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Q9. What are the different stages in selection of Composite material according to Gulf Standards? (3 marks)

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1. a. If the Sun subtends a solid angle $\Omega$ on the sky, and the flux from the Sun just above the Earth's atmosphere, integrated over all wavelengths, is $f(d_\odot)$, show that the flux at the solar photosphere is $\pi f(d_\odot)/\Omega$. b. The angular diameter of the Sun is 0.57 degree. Calculate the solid angle subtended by the Sun, in steradians. Answer: $\Omega = 7.8 \times 10^{-5}$. c. The solar flux at Earth is $f(d_\odot) = 1.4 \times 10^6 \text{ erg s}^{-1} \text{cm}^{-2} = 1.4 \text{ kW m}^{-2}$. Use (b), and the Stefan-Boltzmann law, to derive the effective surface temperature of the Sun. Answer: $T_E = 5800 \text{ K}$.

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Problem 1: Develop a matrix equation for minimizing the cost in image registration (without summation indicates the sum over all points in a shape). Cost = -T- x - ax + by + t 12 y - bx + ay + t2 Cost = x - ax + by + t + y - bx + ay + To find the optimal transformation that will align image 2 to image 1, take the partial derivatives of the above cost with respect to a, b, t1, and t2 and set these to 0. Express the four resulting equations in matrix form. ∂C/∂a = 0 ∂C/∂b = 0 ∂C/∂t1 = 0 ∂C/∂t2 = 0 For example, the first equation will appear as: ∂C/∂a = -2x(x - ax + by + t) - 2y(y - bx + ay + t) = 0 -2xx + 2ax + 2bx - 2yy + 2ay = 0 2x + 2y + 0b + 2t = 2xx + 2yy In matrix form, it can be written as: 2x + 2y 0 2x 2y xx + 2yy The equation can be expressed as: At = b where t is the unknown transformation vector consisting of a, b, t1, and t2. It can be easily solved as 9-V.

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a) Convert the decimal number - 224 into a signed binary number using (1) sign-magnitude method (2) 1's complement method (3) 2's complement method (1+1+1=3 marks) b) If the above decimal number is positive, that is + 224, then convert it to a signed binary number using 1 's complement method (0.5 mark) c) Do the following binary subtraction: 111001100.00011- 010101110.10010 d)Explain difference between Static and Dynamic RAM? (2 marks) (1.5 marks)

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QUESTION 3 Find the sum of two sinusoidal voltages, given as follows: v1 (t)=V1 cos(wt+$\phi_1$) and v2 (t)=V2 cos(wt+$\phi_2$). You are told that V1 = 19, V2 = 14, ? = 1,000, $\phi_1$ = 25° and $\phi_2$ = 72°. Hint: we recommend using the phasor transform to add these signals in the frequency domain. Once you have added the signals, please enter the magnitude below. QUESTION 4 A voltage of v(t) = 4.5 cos (16 t - 41°) V is applied across a capacitor C = 1.8 mF as shown. What is the magnitude of the current phasor through the capacitor? i(t) C v(t) Please enter your answer in Amps (A), to 3 significant figures below.

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Question 10 (7 points) a. Suppose a tax is applied on each unit of oil to take account of the environmental damages caused by oil. The substitute causes no environmental damage. Describe the impact of the tax by answering the following questions. i. What is the impact on the initial price, $P_0$ and quantity, $q_0$. Explain. (2 marks) ii. How will the timing of the switch to the substitute be affected? Explain. (3 marks) iii. What happens to the total quantity extracted? Explain. (2 marks)

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