Principle of momentum and linear momentum: A penguin inside a box (10 Newtons) ascends the inclined plane (π / 3 Radians) completely smooth due to an impulsive force that gives it an initial speed of 36 km / h. Calculate the seconds it would take to come to a complete stop (rest). It is not necessary to know the magnitude of Impulsive Force F as you can see in your equation of the principle of impulse and linear momentum (It stopped acting at the moment it reaches the indicated speed)

QUESTION 10

In metal cutting, the application of cutting fluid decreases the coefficient of friction thereby improving the machining efficiency.

True

False

1 points   

QUESTION 11

Increasing the rake angle of the cutting tool significantly reduces the power consumption in turning.

True

False

1 points   

QUESTION 12

A work holder must position or locate a workpiece in a definite relation to the cutting tool and must withstand ________________________ forces.

Plot the shear strain and the shear strain rate as functions of the shear angle, for several tool rake angles. Describe your observations.

Search for the thought experiment called “Maxwell’s demon” and summarize its importance regarding the second law of thermodynamics in your own words in a half a page long essay. Add the references at the end of the essay.

In C

Exercise 8.1 A word is said to be “abecedarian” if the letters in the word appear in alphabetical order. For example, the following are all 6-letter English abecedarian words.

abdest, acknow, acorsy, adempt, adipsy, agnosy, be?st, behint, beknow, bijoux, biopsy, cestuy, chintz, de?ux, dehors, dehort, deinos, diluvy, dimpsy

a. Describe an algorithm for checking whether a given word (String) is abecedarian, assuming that the word contains only lower-case letters. Your algorithm can be iterative or recursive.

b. Implement your algorithm in a function called IsAbecedarian().

Essay about fire sprinkler in your own words.

A car’s radiator is a heat exchanger with 2 kg/s of hot water entering at 100 C and leaving at 60 C with a pressure of 200 kPa. Air flows across the heat exchanger entering at 25 C and leaving at 40 C. What is the volume flowrate of air needed in m³/s? (18.9 m3/s)

0.5 kg of R12 are contained in a piston/cylinder and has a quality of 75% and a temperature of 0 C. Heat is transferred at constant pressure until the R12 is a saturated vapor. Determine: a) the initial volume of the R12; b) the work done; c) the heat transfer; d) the T-v diagram.

Ans:

a) 0.0208 m3 b) 2.13 kJ c) 18.9 kJ

PLEASE ANSWER ALL

1. Calculate the molar enthalpy of combustion at 25?C and 1 bar pressure of a gas of volumetric analysis 12% H2, 29% CO, 2.6% CH4, 0.4% C2H4, 4% CO2, and 52% N2 for the H2O in the vapour phase and in the liquid phase.

ANSWER (- 137 240 kJ/kmol; - 145 158 kJ/kmol)

2. A gaseous fuel has the following volumetric composition: CH4 0.38, H2 0.26, N2 0.06, CO 0.26, CO2 0.04. Find the stoichiometric air/fuel ratio by volume and the corresponding wet and dry volumetric analyses of the products of combustion.

ANSWER (4.86; CO2 0.121, H2O 0.182, N2 0.697; CO2 0.1485, N2 0.8515)

ANSWER ALL

1. A quantity of coal used in a boiler had the following analysis: 82% C; 5% H; 6% 0; 2% N; 5% ash. The dry flue gas analysis showed 14% CO2 and some oxygen. Calculate: (i) The oxygen content of the dry flue gas; (ii) The A/F ratio and the excess air supplied.

ANSWER (5.52%; 14.29/1; 31.8%)

2. The enthalpy of combustion of propane gas, C3H8, at 25 ?C with the H2O in the products in the liquid phase is – 50 360 kJ/kg. Calculate the enthalpy of combustion with the H2O in the vapour phase per unit mass of fuel and per unit amount of substance of fuel. ANSWER (- 46 364 kJ/kg; - 2 040 030 kJ/kmol)

1.Determine following conversation
(1) Define 'Decibel (dB)'
(2) Define 'time constant'
(3) Define 'Hall effect' and Writes it's principle and representative Use
(4) Defne 'SI(International Systems of Units)'
(5) Characteristic of 'Operational Amplifier' (more than 3)
(6) Define 'Feedback Control'
(7) Explain Advantages of 'Microprocessor Controler' and representative Use
(8) Define 'Cracking Pressure'
(9) Define 'Cavitation' and its Effect
(10) Definie 'Servo Valve' and Writes it's principle and representative Use

A.

The process most widely used to make fully-dense parts in metal or polymer is…?

Group of answer choices

a. Powder Bed Fusion - liquid phase sintering

b. Electron-beam melting

c. Sheet Lamination

d. Powder Bed Fusion - melting

B.

The most widely used “drop on demand” AM method…

Group of answer choices

a. uses thermal energy to generate pressure which produces droplets

b. uses pressure injectors to generate pressure which produces droplets

c. uses centrifugal force to generate pressure which produces droplets

d. uses piezoelectricity to generate pressure which produces droplets

C.

A "star-weave" scan pattern is used to:

Group of answer choices

a. Increase layer adhesion

b. Minimize the amount of uncured resin

c. Reduce the amount of part distortion

d. All of the above

What is easier: Homogeneous or heterogeneous nucleation? Why?

What does an Isothermal Transformation (IT) Diagram tell us?

How do nucleation rates and diffusion rates influence the shape of the IT Diagram?

What do the letters "A", "F", "P", "B", and "M" mean on these diagrams?

What are the similarities and differences between the following microstructures: Coarse Pearlite; Fine Pearlite; Bainite; Spheroidite; and Tempered Martensite?

How is Martensite (not the tempered kind) formed, and how is it completely different from the other microstructures listed above?

What is the ONLY phase that can transform to into Pearlite, Bainite, or Martensite?

Can you make Tempered Martensite using a single heat treatment, or do you need to use multiple heat treatments?

1.Discuss the possible sources of errors (at least two) in Brinell hardness measurements.

2.why is it necessary to maintain P / D2 ratio of 30 for ferrous materials and 10 for non-ferrous materials is Brinell hardness test?