Work, Energy, Power, and Energy Conservation. In Doctor Stranger Episode 13. A heart surgery was performed. In an actual setting. A surgeon is using material from a donated heart to repair a patient's damaged aorta and needs to know the elastic characteristics of this aortal material. With that having said, test must be performed/assessed. This test was carried out on a 16.0 em strip of the donated aorta reveal that it stretches 3.75 cm when a 1.50-N pull is exerted on it. (a) What is the force constant of this strip of aortal material? (b) If the maximum distance it will be able to stretch when it replaces the aorta in the damaged heart is 1.14 cm, what is the greatest force it will be able to exert there? (c) With all the conditions stated in the previous parts of the problem, what is the work done that it can exert? (d) What is the power that it can exert for an hour of heart beat (assume 80 beats per minute)? (

Work, Energy, Power, and Energy Conservation. In Doctor Stranger Episode 13. A heart surgery was performed. In an actual setting. A surgeon is using material from a donated heart to repair a patient's damaged aorta and needs to know the elastic characteristics of this aortal material. With that having said, test must be performed/assessed. This test was carried out on a 16.0 em strip of the donated aorta reveal that it stretches 3.75 cm when a 1.50-N pull is exerted on it. (a) What is the force constant of this strip of aortal material? (b) If the maximum distance it will be able to stretch when it replaces the aorta in the damaged heart is 1.14 cm, what is the greatest force it will be able to exert there? (c) With all the conditions stated in the previous parts of the problem, what is the work done that it can exert? (d) What is the power that it can exert for an hour of heart beat (assume 80 beats per minute)? (

Name: 2. Can you please THOROUGHLY explain how did you solve this? I need it
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Description: 2. Can you please THOROUGHLY explain how did you solve this? I need it in step by step format because I'm going to explain it in class. Please help me, thank you Given:1 = 16 cm = 0. 16 mAx = 3.75 cm = 3.75* 10- mF = 1. 50 NXman = 1. 14 cm = 1. 14 *

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 24PQ: A block is placed on top of a vertical spring, and the spring compresses. Figure P8.24 depicts a...

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Give an example of something think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this without doing work.
The Flybar high-tech pogo stick is advertised as being capable of launching jumpers up to 6 ft. The ad says that the minimum weight of a jumper is 120 lb and the maximum weight is 250 lb. It also says that the pogo stick uses a patented system of elastometric rubber springs that provides up to 1200 lbs of thrust, something common helical spring sticks simply cannot achieve (rubber has 10 times the energy storing capability of steel). a. Use Figure P8.32 to estimate the maximum compression of the pogo sticks spring. Include the uncertainty in your estimate. b. What is the effective spring constant of the elastometric rubber springs? Comment on the claim that rubber has 10 times the energy-storing capability of steel. c. Check the ads claim that the maximum height a jumper can achieve is 6 ft.
A block is connected to a spring that is suspended from the ceiling. Assuming air resistance is ignored, describe the energy transformations that occur within the system consisting of the block, the Earth, and the spring when the block is set into vertical motion.
(a) What is the power output in watts and horsepower of a 70.0-kg sprinter who accelerates from rest to 10.0 m/s in 3.00 s? (b) Considering the amount of power generated, do you think a well-trained athlete could do this repetitively for long periods of time?
In most situations we have encountered in this chapter, frictional forces tend to reduce the kinetic energy of an object. However, frictional forces can sometimes increase an objects kinetic energy. Describe a few situations in which friction causes an increase in kinetic energy.
(a) A child slides down a water slide at an amusement park from an initial height h. The slide can be considered frictionless because of the water flowing down it. Can the equation for conservation of mechanical energy be used on the child? (b) Is the mass of the child a factor in determining his speed at the bottom of the slide? (c) The child drops straight down rather than following the curved ramp of the slide. In which case will he be traveling faster at ground level? (d) If friction is present, how would the conservation-of-energy equation be modified? (e) Find the maximum speed of the child when the slide is frictionless if the initial height of the slide is 12.0 m.
A block is placed on top of a vertical spring, and the spring compresses. Figure P8.24 depicts a moment in time when the spring is compressed by an amount h. a. To calculate the change in the gravitational and elastic potential energies, what must be included in the system? b. Find an expression for the change in the systems potential energy in terms of the parameters shown in Figure P8.24. c. If m = 0.865 kg and k = 125 N/m, find the change in the systems potential energy when the blocks displacement is h = 0.0650 m, relative to its initial position. FIGURE P8.24
The work Fsp x dx done by the force exerted by the spring on a mass attached to the end of the springwhen the mass has displacement d isa. always negative.b. always positive.c. negative half the time, positive the other half of the time.d. positive more than it is negative.e. negative more than it is positive.
8. You are working on a design for a runaway truck ramp as indicated in the figure below. The hill is covered in gravel so that the truck's wheels will slide up the hill instead of rolling up the hill. The coefficient of kinetic friction between the tires and the gravel is uz. This design has a spring at the top of the ramp that will help to stop the trucks. This spring is located at height h. The spring will compress until the truck stops, and then a latch will keep the spring from decompressing (stretching back out). The spring can compress a maximum distance xmax because of the latching mechanism. Your job is to determine how strong the spring must be. In other words, you need to find the spring constant so that a truck of mass m, moving at an initial speed of |3ol, will be stopped. a. Draw energy bar diagrams for whatever system you are using both at the initial time and the final time (when the spring is completely compressed). spring gravel
When is the mechanical energy of a system of objects is conserved? I. Only when external forces act on the objects. II. Only when the objects move along closed paths. III. Only when the work done by the resultant external force is zero.
3. In the figure shown, the coefficient of kinetic friction between the block and the 30° incline is 0.290. Disregard any pulley mass or friction in the pulley. Take M = 250 grams. What is the magnitude of the acceleration of the suspended block as it falls? 2 м 30° (a) (b) Solve the problem using work and energy ideas. м
13. A block launched at Figure P9.13 speed v down an in- cline slides down the incline (there is fric- tion between the block and incline) and into a MWwww spring (Figure P9.13), where it slows to zero speed as the spring compresses. (a) Draw an energy diagram for this process using a system consisting of the block, spring, Earth, and incline. If there is more than one object causing energy con- versions, use a separate bar for each. (b) Repeat part a using a system of just the block and incline. (c) Why can't you use the block alone as your system? •. 12