Other Engineering Answers

As software becomes more pervasive, risks to the public (due to faulty programs) become an increasingly

significant concern. Develop a doomsday but realistic scenario in which the failure of a computer program

could do great harm, either economic or human.

A sports apparel company has received an order for a college basketball team’s national championship T-shirt. The company can purchase the T-shirts from textile factories in Mexico, Puerto Rico, and Haiti. The shirts are shipped from the factories to companies in the United States that silk-screen the shirts before they are shipped to distribution centers. Following are the production and transportation costs ($/shirt) from the T-shirt factories to the silk-screen companies to the distribution centers, plus the supply of T-shirts at the factories and demand for the shirts at the distribution centers. Determine the optimal shipments to minimize total production and transportation costs for the apparel company

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goods truck arrive randomly at a stockyard with a mean of 8 trucks/hour.a crew of four operatives can unload a truck in 6 minutes. trucks waiting in queue to be unloaded are paid a waiting charge at the rate of 60/hour, operative are paid a wage rate of 20/hour.it is possible to augment the crew strength to 2 or 3 (of four operatives per crew) when the unloading time will be 4 minutes or 3 minutes respectively per truck.find the optimal crew size

The James Webb Space Telescope (JWSP) was finally launched into space on December 25, 2021,

and is about to become one of the most important scientific instruments of our time. Name the

major components of the JWSP shown in the figure below:

The James Webb Space Telescope is positioned around 1.5 million kilometres from the Earth on

the side facing away from the Sun. The telescope remains at this distance and orbits around the

Sun with the Earth’s orbital velocity.

(a) Why is it important to position the JWST behind the Earth?

(b) Determine the angular velocity ω of the telescope as it orbits around the Sun.

The centrifugalFω and gravitational forceFG are acting on objects orbiting the Sun: F = Fω−FG

(c) Based on this, how much should the telescope accelerate towards or away from the Sun?

(d) Why is the orbit of the telescope stable nonetheless? What otherforces need to be considered?

Neutron stars are some of the densest objects in the universe. They form during supernova ex-

plosions and are very small compared to other astronomical objects. You can assume 5 x 1017

kg/m3 as the average density of a neutron star. The Earth has a total mass of about 5.97 x 1024 kg.

What would be the diameter of the Earth if it had the density of a neutron star?

Assume that a gravitational anomaly in the solar system has shied afield of asteroids into Earth’s

orbit, and the field is now moving directly towards Earth. The asteroid field has a density of ρ

(asteroids/volume), and each asteroid has an average mass of m. The asteroid field stretches

over a distance d in Earth’s path. Assume that the Earth moves with a velocity of v, the asteroids

with u, and that v  u. Let R be the radius of the Earth. The Earth collides with the asteroid field:

v u

Show that the slow-down ∆v of the Earth due to the asteroid collisions is given by:

∆v = v



1 −

1

1 + πR2dρ m

M

The electromagnetic spectrum contains various types of radiation with dierent properties. The

James Webb Space Telescope is not like an optical telescope at home and does not capture visible

light; instead, it observes the sky in the infrared spectrum.

Explain what infrared radiation is and answer the following questions: How is infrared radiation

dierent from visible light? Why does the JWST observe infrared light, and what are the scientific

advantages for astronomers?

Working professionals and students may find it tough to carve out time from their hectic schedules to get to the gym every day for a workout due to workload and studies. As a result, many people prefer to exercise at home instead of going to the gym. On the other hand, a gym workout or exercise done without following the required processor positions and without the supervision of a trainer might cause muscular damage. Additionally, hiring a personal trainer may not be within everyone''''s financial means.

By observing this situation suppose you are going to develop a mobile application, which will act as a virtual trainer. This application will guide the users on various body exercises with step-by-step positions with images. The users can keep a track of the data of day-to-day exercises. As a requirement engineer, which requirement elicitation technique will remain better for developing this application? Justify your answer with valid reasons in 3 to 4 lines only.