Why were some fuels called unleaded? I. Lead used to be added to diesel to improve its octane rating II. Blends with minimal lead content replaced lead-heavy fuels.

Q: A 20-g bullet is fired at a 5-kg square panel of side b = 300 mm. The velocity of the bullet just…

A: given : mass of bullet mb=20g=0.02 kg the velocity of bullet = 500m/s, angle = 15o penetration time…

Q: ne 18-ft-long gate is a quarter circle and is hinged at H. Determine the horizontal force, P,…

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Q: The collar of mass m = 77 kg in Figure Q14 slides outwards with an initial radial velocity vo = 0.58…

A: Given:  The mass of the collar: →m=77 Kg Initial radial velocity of the collar: →vo=0.58 m/s…

Q: A Single Edge Bend sample is tested to determine the fracture toughness of a material. The sample…

A: Given: Width of the specimen→B=35 mm Height of the specimen→W=63 mm So from the figure, the length…

Q: A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of…

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Q: (b) A system of mass rotation rod has been run at co-40 rad/s as shown in Figure Q1. The system has…

A: The table shows the given value Mass Weight Radius Angle Mass A 1.2 kg 1.135 m 113.4° Mass B…

Q: Stress (MPa) Graph 1 - Stress/Strain plot 400 320 300 200 100 0 (a) 51.472kN (b) 205.89kN (c) 25735N…

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Q: Based on the IT diagram for an iron-carbon alloy of eutectoid composition, specify the final…

A: Given: There are time temperature graph that signifies the changes in the microstructures according…

Q: A Stirling engine involves: (1) isothermal heat addition → (2) isochoric heat removal → (3)…

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Q: 0.5 m 0.5 m 8 kN 3 m B သည်။ y 0.5 m A -1.5 m- 6 kN 5 kN

A: Find the moment about point A

Q: A 500 kg mass is supported by steel cables A and B, as shown below. Determine the minimum diameters…

A: In this problem, we will determine the minimal diameter of the cable by first calculating the force…

Q: Calculate the temperature of the solar air (sol - air) and the faces of the vertical wall: southwest…

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Q: The two bars shown in the figure are used to support a load P. When unloaded, joint B has…

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Q: QUESTION 6 Above a flat plate, a steady and two-dimensional laminar boundary layer grows without…

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Q: A Rayleigh’s method approximation for the first flexural natural frequency of a beam that is simply…

A: Given that:  lx2-x3 We need to find the boundary conditions. The boundary conditions in the above…

Q: A process at constant pressure pressure takes nn mole rigid diatomic from an initial temperature T…

A: Given:  Constant pressure process Number of moles of rigid diatomic molecules = n  Initial…

Q: The 10-kg block shown in the figure below rests on the smooth incline. If the spring is originally…

A: Given data: Mass of the block = m = 10 kg Angle of inclination of plane = 30° Distance travelled = s…

Q: QUESTION 8 A small component is made from aluminium 7475 where Kc = 35.2 MPa m 1/2 Non-destructive…

A: Given: The maximum crack length, a = 0.05/2 mm = 0.025 mm

Q: Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the…

A: A petrol engine is an example of a heat engine, which is a device that converts thermal energy into…

Q: When an axial load is applied to the ends of the bar shown in the figure, the total elongation of…

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Q: Describe the operation of a petrol engine, and explain how it is estimated by the idealised Otto…

A: A petrol engine is a type of internal combustion engine that runs on gasoline as its fuel. It works…

Q: 14-35. A 1-kg block rests on the smooth semicylindrical surface. An elastic cord having a stiffness…

A: Given data as per the question weight of block =1 kg Stiffness of elastic cord =30 N/m

Q: 4 ) Every temperature measuring instrument makes use of specific physical property in order to…

A: Pt sensor: Pt sensor are the most common type of platinum resistance thermometer. it refers that the…

Q: hod? 2- What is the effect of heat treatment on the average grain size? And what is the influence of…

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Q: Two planes, A and B, are flying at the same altitude (height). If their velocities are V₁ = 600 km/h…

A: In this problem, we will compute the velocity of plane B in relation to plane A, which will be used…

Q: 4 3 S +45 +95 +85+ 5 = 0

A: To check: The stability of the system. Given: The characteristic equation is S4+4S3+9S2+8S+5=0.

Q: A ball bearing operates on the following work cycle: Radial load (N) 3000 7000 5000 Element No. 1 2.…

A: A machine's bearings reduce friction between moving parts by limiting relative motion to that motion…

Q: Q2) Suppose two measured quantities x-(2.0=0.2) cm, y-(6.0=0.6) cm. Find z-x-y and its uncertainty…

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Q: Determine the magnitude of the moment of the force F= {50i-11j -80k} N about member AB of the…

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Q: 9:08 If the weight of the crate is 60 lb, determine the magnitude of the force in cable AB. The…

A: Given data  The force in AC = 45.5(lb) Find the force in AB

Q: The pV diagram in (Figure 1) shows the cycle followed by the gas in an ideal-gas heat engine. 260 J…

A: GivenQ12=260 J

Q: The wooden beam (E = 10 GPa) is loaded as shown. Using the Method of Superposition, find the slope…

A: Given data: P=4 KN    =4*103 NThe length L=6 mdistance from A to C ,a=1.5 mdistance from B to…

Q: For the purpose of acting as an air-cooled water chiller, an ammonia refrigerant vapor compression…

A: Note: As per the policy, we can solve the first three subparts unless it is mentioned to solve the…

Q: The two bars shown in the figure are used to support a load P. When unloaded, joint B has…

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Q: A rigid container with volume of 200 L is divided by a partition resulting to two equal volumes A…

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Q: Figure Q4 shows a weld line in a metal plate subject to a biaxial stress state. Use Mohr's circle to…

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Q: Air from a workspace enters an air conditioner unit at 30oC dry bulb and 20oC wet bulb.The air…

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Q: The two bars are used to support load P. When unloaded, joint B has coordinates (0, 0). After load P…

A: in this, we need to solve the normal strain in each bar  first of all, we will convert all in inches…

Q: A D 5 mm diameter electrical transmission line carries an electric current of I= 50 A and has a…

A: Given: wind velocity, v=50km/h=13.8889m/s current, i=50Amp Resistance, R=0.002ohm Air temperature,…

Q: The mass center G of the 1530-kg rear-engine car is located as shown in the figure. Determine the…

A: Given data- A car with weight given in equilibrium condition we have to find normal force at both…

Q: what is the formula for working out spring constant?

A: Spring constant is generally defined as the force per unit elongation.

Q: The infinitisimal work done when expanding a liquid surface is given by ??=??A Which of the…

A: As we knowfrom first law of thermodynamicQ=∆U+WwhereQ= heat transferW= work done∆U= change in…

Q: A thin flat plate 55 x 110 cm is immersed in a 6 m/s stream of oil. What is the friction drag on one…

A: GivenA=55×110 cmV=6 m/sρ=891 kg/m3μ=0.29 Pa-s

Q: A support beam, within an industrial building, is subjected to vibrations along its length;…

A: “Since you have posted multiple questions, we will provide the  solution   only to the first…

Q: A flow of steam at 12 MPa, 600°C enters a two-stage turbine as shown in the image below. The…

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Q: A system of three steel pipes, AB, BC, and CD, is loaded and supported as shown below. The loads are…

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Q: A refrigerator uses refrigerant-134s as a working fluid and operates on an ideal vapour-compression…

A: As per the rule, the first three sub-parts will be answered. The refrigerant is 134-a. The high…

Q: Inside a machine, two gears, A and B, HINGED at their centers, are meshed with each other such that…

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Q: Using the ideas in heat pumps under cyclic process, thoroughly explain the following(with d

A: As we knowAn air conditioning system uses principles of thermodynamics to cool a living space. it…

Q: stress stress www. strain strain stress stress strain HARD and TOUGH STRONG strain BRITTLE SOFT and…

A: to find correct match we need to know some concept about each term (a) Brittle :  the brittle…