(1) Select the lightest, rectangular Douglas fir section for the cantilever beam of15- ft span that will carry a uniform load of 450 lb/ft. [Hint: V max = wL; Mmax = wL2/2]

State what the following terms mean and describe briefly how they improve safety in railway signalling:

(i) Block

(ii) Distant Signal

(iii) Overlap

(iv) Track Circuit

(v) Axle Counter

Regarding the case on IBM Watson, watch the video in below and discuss your thoughts regarding the use of Artificial intelligence (AI) in healthcare. Pros? cons? concerns? timeline?

https://www.youtube.com/watch?v=cxJxXcxF8NY

Derive a relation between velocity in rad ial direction v(r) and centerline velocity vc for a fully developed laminar flow inside a horizontal pipe with a head loss h1 for a pipe length L.

Marriage and the Family (AChristian perspective) by Stephen Grunlan

Please watch the video and give your perspective and points of intrest in 200 words. Link is provided below.

YouTube URL:http://www.youtube.com/watch?v=AptieDqNKEc

Sketch the I-V characteristics of a diode. Why does the current saturate at high plate voltages?

Sketch the current voltage characteristics of a triode.

Briefly explain how a triode can amplify ac signals.

Let En be the subspace of V (n, 2) consisting of all vectros of even weight.

(a) What are the parameters [n, k, d] of En.

(b) Write down a generator matrix for En in standard form

The density of helium is 7 times smaller than air. For any gas, the speed of sound is given by v= (Pressure/Gas Density) ^1/2. If the pressure is kept the same, what is the speed of sound in helium?

A particle is found to carry the kinetic energy, K=(γ−1)mc2, which is equal to the energy of a photon. If the speed of the particle is v=0.500c, find the ratio of the wavelength of the photon to the de Broglie wavelength of the particle.

Complete the following assignment in C programming language.

1. Get the user’s first name and store it to a char array
   • Declare a character array to hold at least 20 characters.
   • Ask for the user’s first name and store the name into your char array.
   • Hint: Use %s for scanf. %s will only scan one word and cannot scan a name with spaces.
2. Get 3 exam scores from the user:
   • Declare an array of 3 integers
   • Assume the scores are out of 100, and use a for loop to get user’s input
   • Your prompts should print out which exam score you are asking for:
     1. Example: “What is the score of Exam #1?” … “What is the score of Exam #3?”
   • Warning: Be careful of your array indexes!
3. Find out the average exam score:
   • Use a for loop to calculate the sum of all exams.
   • Divide the sum by 3 to get the average and store the is data in a variable.
4. Print out the summary for the use similar to:
   • “Hello NAME, based on your exam score of 80, 90, and 100, your average is 90.0 with a letter of an ‘A.’”