Numerade

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In what state is Pearl Harbor in? A) Oregon B) Hawaii C) Washington D) California

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What statement best describes the primary function of the Vacuole? Question 17 options: An organelle involved in storage of compounds including water An organelle involved in intracellular digestion Location where microtubules, a type of cytoskeleton, are produced An organelle involved in the long term storage of water various compounds, plant rigidity, and intracellular digestion

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What is the correct “Level of commitment” stages? What is the correct “Level of commitment” stages? Commitment, determination, differentiation. Commitment, specification, differentiation. Determination, specification, differentiation. Specification, determination differentiation.

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Given $X(s) = \frac{s+1}{s^2 + 9}$ \newline Zero: Ex: 3 or none \newline Poles: $\pm j$ Ex: 1 \newline In the time domain, $x(t)$ is a Select

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Modify the query from the last question to add a column that subtracts the old price from the new price. Round the results and label the column "increase."

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7. Define the relation R on the set of integers Z by Vm, n ? Z, (m, n) ? R ? 5|(m² - n²) (a) (9 points) Show that R defines an equivalence relation on Z. b) Find all possible equivalence classes of the relation R.

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Write the system of equations as an augmented matrix $\begin{cases} z - 4x = -2 \ -5z - 4x = -14 \end{cases}$

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1) Consider the set-up used by J.J. Thomson in his discovery of the electron and consider the one used by Einstein to study the photoelectric effect. a) Extract the similarities and the main differences (give your answer in one original short paragraph written in academic English). b) Explain the role of the potential difference in the two schematics (give your answer in one original paragraph written in academic English). 2) A piece of potassium metal is exposed to a green light of 500 nm and a piece of gold of the same geometry is exposed to a UV light of 200 nm. a) Compare the maximum kinetic energies of the resulting photoelectrons. b) What are the resulting stopping potentials. You must give your reasoning in each case. 3) Rutherford is accredited to have discovered the nucleus of the atom; he detected alpha particles that went through the target and alpha particles that backscattered from the target. a) Give a rough value of the angle of scattering in both cases. Give a motivation to your choice in each case. b) Explain (in one original paragraph written in academic English) why both signals were equally important in the conclusion he drew in proposing the existence of the atomic nucleus.

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1) Wheel A has a mass of 5 kg and a radius of gyration of 140 mm. The mass of B is 1 kg. If the system starts from rest and has no bearing friction, determine the angular acceleration of A and the tension in the rope (Points: 10) 100 mm L A B 2) Based on the figure shown below, the rotation of winch drum A causes motion of weight B to the right. The winch drum has a mass moment of intertia of 10 ft.lb.s². Determine the torque that must be applied to the drum to cause weight B to accelerate at 4 ft/s². (Points: 10) ? e 600 lb B 3' A Torque $\mu_k$ = .15

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The dilute-phase vacuum conveying system shown in Figure 1 is transferring 9.75 + P/3 t.h- of grain, according to the following specification: Horizontal conveying pipeline: galvanized steel internal diameter D = 100 + Q mm total length L = 112 + PQ/4 m; internal roughness, g = 0.10 mm Dehumidifier pressure loss = 10 + P kPa Receiving bin filter pressure loss = 5 + Q/3 kPa Temperature of air along conveying pipeline and through filter, t = 20 + p C. Absolute viscosity of air at 20 + P C = [1.4 + QP/100]10 Pa.s Atmospheric air pressure, Patm = 101 kPa-abs Atmospheric air temperature, tatm = 20 C. Acceleration due to gravity, g = 9.81 m/s Pitot tube measurements in between filter and blower and close to filter: average air velocity = 40 + PQ/100 m/s; static gauge air pressure = -70 + Q kPa-g You are required to determine the following items: Total conveying pipeline pressure drop, p kPa 1.3 Marks (a) (b) Density of air at the pitot tube, Pfp kg.m 1.3 Marks) Conveying air mass flow rate, mf kg.s 1.3 Marks) (c) (d) Superficial conveying air velocity at the inlet and the exit of the conveying pipeline, V an 1Vfem.s, respectively 1.7 Marks) (e) Mean superficial air velocity for the pipeline (Vm, the Reynolds No. Re, the air-only pipe wall friction factor, and the air-only pressure drop (2.4 Marks)

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jordi p.