Numerade

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When you play with your toy gun, the gun has a spring. When the spring is compressed by 0.12m, the toy gun shots out a 0.010 kg pellet to a max height of 100m, a) What is the final gravitational potential energy of the pellet? b) What is the spring constant? Ignore air resistance. Please show your work

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Chemistry Sem 1 6.1 Intro Des $ \times $ Applications Apex Learnin Apex Learnin Ace Al Tutor 1 Point Whic Apps CPS Apps Prayer Journal Pri... Google Google Accounts G Image result for sa... VINELink ver. 2.0 Offender Search :... G AT\&T treble reble2.0 (N') Apex Learning Pretest: Unit 4 Question 22 of 30 How does a balanced chemical equation show the conservation of mass? A. It shows that the mass of the products is greater than the mass of the reactants when a reaction increases the moles of substances. B. It shows that the total number of moles of substances stays the same. C. It shows that the mass of the reactants is greater than the mass of the products when gases are produced by the reaction. D. It shows that the number of each type of atom stays the same. SUBMIT PREVIOUS

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6. Solve the Laplace boundary value problem with $\frac{\partial^2 W}{\partial x^2} + \frac{\partial^2 W}{\partial y^2} = 0$, $0 \leq x \leq 1$, $0 \leq y \leq 2$ $W(x, 0) = W(x, 2) = W(0, y) = 0$, $W(1, y) = 1$. Please write your answers here: [21 marks]

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1. What is the pressure in pounds per square inch (PSI) of a cube weighing 1000 pounds with dimensions of 12x12x12 inches exerting force on a flat surface?

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1. (40 points) You are asked to design an analog-to-digital converter with a dynamic range of R = 2 V to digitize a biomedical signal. The dynamic and frequency range of the signal given as below: Dynamic Range 10µV - 200 mV Frequency Range 500 Hz-3 kHz a. (14 Points) Determine the amplification factor (A) of your amplifier for the given dynamic range of biomedical signal. b. (14 Points) What is the Nyquist rate for this signal? (In other words, specify the minimum sampling rate of your sampler?) c. (12 Points) Check aliasing for given sampling frequencies below, and explain briefly: i. If this biomedical signal is sampled at $f_s$ = 2 kHz, will aliasing occur? ii. If this biomedical signal is sampled at $f_s$ = 8 kHz, will aliasing occur? Note: Please be specific and explain your reasoning.

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Find the curvature of the curve defined by $\vec{r}(t) = \langle 3 \cos(t), 4 \sin(t) \rangle$ at $t = \frac{\pi}{2}$.

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LeaseOrRentHome Inc. helps its clients to find the best option for a home. Your team is assigned to develop an Android application based on the following specifications: 1. The main screen will display the company logo and a button —Enter—. 2. The second screen allows the potential customer to choose the home types: a. apartment b. detached home c. semi-detached home d. condominium e. town house 3. Use an options Menu control to implement the selection of home types. Display a user-friendly screen with available homes whenever the user selects a home type from the menu. For example, if the user selects apartment home type, the next screen will display the available apartments (address, rent price, and image). 4. Use check boxes to select the apartments that you want to visit (virtually or physically). The user may use the menu control to choose another home type, and so on. 5. The check-out screen displays the selected homes and corresponding addresses, and prices. Use a radio group for listing selected homes. The user can now choose the home (assuming has visited all selected homes). 6. The next screen prompts the user with payment option (cash, credit card, debit card). Use a group of radio buttons to select the payment method. 7. The last screen asks the user to enter credit/debit card information if the user chooses either of these payment methods. Use EditText controls and other GUI elements to allow the user to enter customer’ information: full name, credit/debit card number. The rest of the fields will be different for each student. For example, you may create fields for favorite sport, favorite team, favorite food, etc. Create 2-3 fields named as mentioned above. Provide validation for these entries using the proper attributes/methods/constructor for each GUI control. 8. Use Application preferences for storing user selections as the user navigates through the various screens of the application. Use TextView objects to display information as needed. Use styles and themes to create a nice look and feel of your app. Use drawable objects to display the logo for the company, home types, homes, etc.

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A4. (Actuators) Name the three main types of actuators used in robots. Write a program to generate a variable pulse stream to drive a motor with pulse width modulated voltages of 1, 2, 3, 4, and 5 volts for a 5-volt input.

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2. dx\textsuperscript{2} + 4x + 16 = 0 Sum of the Roots: Product of the Roots:

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01. The desks in an examination hall are arranged for an examination in 15 rows according to a pattern with a common difference, such that the first row consists of 6 desks, the second row of 9 desks, the third row of 12 desks, etc. (i) How many desks are there in total in the first five rows? (ii) How many desks are there in the 15th row? (iii) Show that the 11th row has 6 times the number of desks in the first row, according to this pattern. (iv) Which row consists of 42 desks?

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melissa m.