FIR201 Assignment 2A

What is the specific gravity of unknown liquid if you know that h=12.9 cm? Unknown liquid h cm 95 cm WATER 50 cm DI

COMPLETE SOLUTION PLS 4 DECIMAL PLACES COMPLETE SOLUTION PLS 4 DECIMAL PLACES COMPLETE SOLUTION PLS 4 DECIMAL PLACES

2. (Inspired by a walk in Baker Student Center.) An escalator handles a steady load of 30 people per minute taking them from the first to the second floor through a vertical rise of 24 feet. Let us say the average person riding the elevator weighs 160 lb. a. What output power on a motor do you require to drive the unit? Take literally one minute to find an electric motor online that could do this job. You can search “_ hp electric motor" and state the motor name, power, cost, and vendor. Of course, round up your hp, not down to meet your specs. (In practice, this is an area where you can spec the motor in equivalent Watts, if you choose.) b. What is the electric power that is input to the motor considering losses within the escalator system due to friction, vibration, etc.? Your chosen motors surely have a different efficiencies and sources may even present efficiency as a function of power/rpm, so let's all use the value of e= 0.85 for consistency.

thermodynamics   Ten kilogram of water us mixed with 12 kilogram of alcohol (SG=0.9).What is the specific gravity of the mixture, assuming that two fluidsmix completely.

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Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint: think dashed lines!), use labeled arrows to identify each individual input and output of "stuff". (e)…

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (a) Identify the system (in words). (b) Identify the "stuff" you are accounting for in this analysis. (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint:…

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University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated…

1) A solid ball dropped into a fluid will sink when   a the average ball density equals to the density of the fluid b the average ball density is larger than the density of the fluid c the average ball density is smaller than the density of the fluid 2) The distance between the center of gravity G and the metacenter M is called metacentric height GM. The larger of GM, the more stable is the floating body. True or False

I want to briefly summarize what he is talking about and what you conclude. pls very urgent

Subject: thermodynamics

A submarine robot explorer is used to explore the marine life in deep water. The weakest point in the submarine robot explorer structure can hold a pressure force of 300 MPa. What is the deepest point can it reach? *

Most collisions are inelastic, meaning the kinetic energy is not conserved in the system.  (a) What are the three most common ways for energy to leave a system during a collision?  To the best of my knowledge, the use of the word "perfectly" in a perfectly elastic collision is not necessary.  Any elastic collision is a perfectly elastic collision.  Both concepts mean the kinetic energy is conserved.  The use of the word "perfectly" in perfectly inelastic collisions is just telling you that the two objects end up sticking to each other (have the same final velocity).  (b) Combine the equations for the 1-D conservation of linear momentum and the conservation of kinetic energy to create a third equation.  Any two of these equations now contain all the information, so the three equations are said to be linearly dependent in math-speak.  This means we only need to use any two equations for our solutions, naturally we will chose the simplest two.  (c) Use two of these equations along with…

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1) A building consists of two floors. The first floor is attached rigidly to the ground, and the second floor is of mass m = 1000 slugs (fps units) and weighs 16 tons (32,000 lb). The elastic frame of the building behaves as a spring that resists horizontal displacements of the second floor; it requires a horizontal force of 5 tons to displace the second floor a distance of 1 ft. Assume that in an earthquake the ground oscillates horizontally with amplitude A, and circular frequency w, resulting in an external horizontal force F(t) What is the natural frequency (in hertz) of oscillations of the second floor? b. If the ground undergoes one oscillation every 2.25 s with an amplitude of 3 in, what is the amplitude of the resulting forced oscillations of the second floor? mA,w²sin(wt) on the second floor. а. 2) A mass m hangs on the end of a cord around a pulley of radius a and moment of inertia I, rotating with an angular velocity w, as shown in the figure below. The rim of the pulley is…

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SUBJECT:MECHANICAL ENGINEERING Q1: A 10 kg body falls from rest with negligible interaction with its surroundings (no friction). Determine its velocity after it falls 3.8 m. Use the 1st Law of Thermo to solve this problem. You may use your knowledge of kinematics or dynamics to verify your solution but the solution must be derived from the 1st Law equation. Ans. 8.64 m/s (Is it ∆ U=-W ? Show your work)