Problem 13.047 - Introductory problem involving power and efficiency - DEPENDENT MULT-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted you will be unabie to retun to this part. It takes 28 s to raise a 1200-kg car and the supporting 300-kg hydraulic car-lift platform to a height of 2.8 m. Problem 13.047.b - Power and Efficlency: required power, efficiency Determine the average electric power required, knowing that the overall conversion efficiency from electric to mechanical power for the system is 82 percent

Problem 13.047 - Introductory problem involving power and efficiency - DEPENDENT MULT-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted you will be unabie to retun to this part. It takes 28 s to raise a 1200-kg car and the supporting 300-kg hydraulic car-lift platform to a height of 2.8 m. Problem 13.047.b - Power and Efficlency: required power, efficiency Determine the average electric power required, knowing that the overall conversion efficiency from electric to mechanical power for the system is 82 percent

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.12P

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SCH 08 HW PSS 8.1: Static equilibrium problems To practice Problem Solving Strategy 8.1 Static equilibrium problems. When you at an object by moving only your forearm, the main lining muscle in your arm is the biceps. Suppose the mass of a forearm is 1.20 kg. If the biceps is connected to the forearm a distance du-3.50 cen from the elbow, how much force F must the biceps exert to hold a 750 g bal at the end of the forearm at distance du 30.0 ctn from the elbow, with the torearm parallel to the floor? How much force F must the elbow exert? (Doute 1) Figure dap Biceps Soull 1 of 1 Evaluate whether the answer you obtained for the force exerted by the biceps is reasonable ▾ Part J VAX Although it is uncommon, orthopedic surgeons have seen patients who have tom their biceps tendon when forces of greater than 390 N have been exeded on the tendon with the arm bent at the elbow so that the forearm is parallel to the ground. What is the minimum mass of a ball Af such a patient might have held…
A vertical chemical reactor undergone a maintenance in which its internals were subjected inspection from bottom to top before catalyst loading. A site engineer (63.00 kg) was tasked to do the inspection and he stopped from time to time at each portion to inspect. A safety officer monitored the engineer’s position while watching from the top and reported his position (Refer to the photo attached. CORRECTION for data table at t=70.00 min, position=725.0 cm): Solve for: (a) Power he exerted at t = 50.00 min (b) Power he exerted at t = 65.00 min (c) Total Work he exerted throughout the inspection (d) Average Power throughout the inspection
2: Find the weight of the truck that could be drawn by a construction equipment on wheels, if rolling resistance of the road is (45 kg/ton) and the grade is (8%) upward with speed of (10 mph); If you know that the site (750m above sea level, temperature is 12° C, and the atmospheric pressure is 740 mm Hg). Equipment specifications: weight (20 tons), engine (four-cycle with 350 hp) at sea level, and efficiency of 82.5%?
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A warehouse consists of 5 aisles of rack (racks on both sides of each aisle) and a loading dock. The rack system is four levels high. Forklift trucks are used to transport loads between the loading docks and the storage compartments of the rack system in each aisle. The trucks move at an average speed of 120m/mim (loaded) and 150m/min (empty). Load handling time (loading plus unloading) per delivery totals 1.0 min per storage/retreival delivery on average, and the anticipated traffic factor = 0.90, worker efficiency = 100% and vehicle availability = 95%. The average distance between the loading docks and the center of aisles 1 through 5 are 150m, 250m, 350m, 450m, 550m respectively. These values are to be used to compute travel times. The required rate of storage/retreival deliveries is 75/hr, distributed evenly among the 5 aisles and the trucks perform either storage or retrieval deliveries but not both in one delivery cycle. Determine the number of forklift trucks required to…
Are you as strong as a horse? Purpose: To understand the concept of work and power and to calculate the power generated by yourself or a friend. Materials: A tape measure, stairs, and a stopwatch, cell phone, or wristwatch. Key Physics Concept: Power is the rate of doing work. Power can be calculated by dividing the work done by the time it takes to do the work; in this case we will do work against gravity on a stair case (you may add your power in doing pushups to test your arm power). Can you guess what your peak horsepower is? You may do the stairs one at at time or multiple stairs at a a time; whatever is most safe and efficient for you. Procedure: Observations: Analysis: Conclusions: Application: 1. Will your hp change if you performed the activity for a longer duration (for example, climbed the CN tower staircase)? In what way? Explain. 2. Research the horsepower generated by a car. How does the average person's peak power rating compare to it? How many average people would it…
You are a new employee at an auto repair shop. The exhaust system on a car you are repairing is leaking. Since you don’t want tto crawl under the car to work on the problem, you tell your boss that you’ll use Pascal’s Principle to design a hydraulic lift that anyone can use to lift cars by hand that weigh up to 2,000 kg using a lifting post with 50 cm diameter. DESCRIBE YOUR DESIGN.
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