Numerade

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A double-slit pattern is obtained using monochromatic light. Consider the following five possible changes in conditions: 1.) decrease the wavelength 2.) increase the wavelength 3.) increase the width of each slit 4.) increase the separation between the slits 5.) decrease the separation between the slits Which of the above would increase the spacing of the interference fringes? Select answer from the options below 3 only 2 and 5 only 1 and 5 only 5 only 1 and 3 only

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Find the root of the equation $50e^{-\frac{x}{10}} - 3x + 20 = 0$ using secant method. Perform three iterations from the starting point $x_0 = 10$. (3 grading points). Estimate the error. (1 grading point).

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3. The concentration solubility product, K'sp, of CaSO4 is found to be 1.80 x 10⁻⁴ in a 0.025 M MgSO4 solution which is saturated with CaSO4. a) Calculate the thermodynamic solubility product constant, Ksp, of CaSO4. b) What is the molar solubility of CaSO4 in water? (without using activities) $a_{Ca^{2+}} = 0.60$ nm $a_{SO_4^{2-}} = 0.40$ nm

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Find the ordered pair solutions for the system of equations. y = x^2 - 2x + 3 y = -2x + 12 ([?], ) and ( , ) Enter the smallest x first.

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One of the following is False about the algebraic expression $x^3 - 2x - 23$ O a. None O b. It is a polynomial with degree 3 O c. $a_2 = 0$ O d. $a_1 = -2$ O e. $a_0 = 23$

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Question 9 1 Point Light is incident on a piece of flint glass (n = 1.66) from the air in such a way that the angle of refraction is exactly half the angle of incidence. What are the values of the angle of incidence and the angle of refraction. A $10^\circ$ and $5^\circ$ B $68^\circ$ and $34^\circ$ C $60^\circ$ and $30^\circ$ D $45^\circ$ and $90^\circ$

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Time left 1:11 An attacker successfully obtained all credit card information of a company's customers by following these steps: 1. The attacker found that a web server was vulnerable to XSS. 2. The attacker used the "Contact US" web form to introduce JS code that downloads malware. 3. When reviewing the message, the administrator's computer was infected by a keylogger. 4. The keylogger captured the administrator's credentials, which were sent to the attacker. 5. The attacker used the credentials to access the web application with administration privileges and obtain confidential information about the company's customers. Match each step with the corresponding action. Step 1 Choose... Choose... Step 2 Exfiltration Step 3 Expansion Damage Step 4 Exploitation Reconnaissance Step 5 Choose...

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2. Steam enters a steady-flow turbine with a mass flow rate of 15 kg/s at 550°C, 8 MPa, and a negligible velocity. The steam expands in the turbine to a superheated vapor at 1 MPa and 250°C where 15 percent of the steam is removed for some other use. The remainder of the steam continues to expand in the second turbine to the point where the pressure is 200 kPa and quality is 100 percent. In the first turbine, steam is losing heat to the surrounding air at 100 kPa and 25°C at a rate of 500 kW. However, the second turbine can be taken as an adiabatic turbine. Note that exergy transfer by heat can be neglected since the temperature at the point of heat transfer is the same as the environment temperature Determine: a) The actual total power output of the system. b) The maximum possible total power output ($W_{reversible}$). c) The second-law efficiency. d) The rate of exergy destroyed during the process. e) The exergy of the steam at the inlet condition of the first turbine.

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EXAMPLE The state of plane stress at a point on a solid is represented on the element shown in the figure. Determine a) principal stresses, and b) the maximum in-plane shear stress and associated average normal stress. y 90 MPa $\sigma_x = -20$ MPa 20 MPa $\sigma_y = +90$ MPa X 60 MPa $\tau_{xy} = +60$ MPa

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Select all the syntheses that produce the pictured ether in better than 50% yield: 2-butanol treated with sodium hydride followed by ethyl chloride ethanol treated with sodium hydride followed by 2-chlorobutane a 50/50 mixture of ethanol and 2-butanol heated with concentrated sulfuric acid 2-butanol treated with sodium hydride followed by 2-chloropropane Click Save and Submit to save and submit. Click Save All Answers to save all answers.

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