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Below, BIO indicates a problem with a biological or medical focus. Problems labeled EST ask you to estimate the answer to a quantitative problem rather than derive a specific answer. Asterisks indicate the level of difficulty of the problem. Problems with no * are considered to be the least difficult a single * marks moderately difficult problems. Two ** indicate more difficult problems.
* BIO Types of energy and reversibility of a process Describe the types of energy that change, the work done on the system, and the energy transferred through heating during the following processes. Indicate whether a reverse process can occur. (a) Water at the top of Niagara Falls cascades onto the blades of an electric generator near the bottom of the falls, rotating the blades and generating an
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- Match the definition of the correct terms. There are more terms than definitions. A tool to help evaluate priorities in terms of urgency and importance A. Procrastination A question of what is more important at a specific time B. Distraction v A reflection of your goals and priorities that supports your planner and answers the question, "What do I have to do today, this week, this month?" v A simple method of managing procrastination by breaking down your work periods into small, manageable units. C. Priority D. Pomodoro Technique E. Pressure Cooker F. SMART v A way of thinking that lets one put off doing something that should be done G. To-Do List now. H. Covey Quadrants/Eisenhower Methodarrow_forwardcan you please state the correct and incorrect statements based on its topic. General Energy Equation I. Potential Energy & Kinetic Energy are always zero. II. Heat and Work are moving forms of energy. They are not properties of a substance. III. The difference of Enthalpy & Internal Energy is the Flow Energy.arrow_forwardChampionship swimmers take about 22 s and about 30 arm strokes to move through the water in a 50 m freestyle race.a. As shown, a swimmer’s metabolic power is 800 W. If the efficiency for swimming is 25%, how much energy is expended moving through the water in a 50 m race?b. If half the energy is used in arm motion and half in leg motion, what is the energy expenditure per arm stroke?c. Model the swimmer’s hand as a paddle. During one arm stroke, the paddle moves halfway around a 90-cm-radius circle. If all the swimmer’s forward propulsion during an arm stroke comes from the hand pushing on the water and none from the arm (somewhat of an oversimplification), what is the average force of the hand on the water?arrow_forward
- > Consider the process shown in (Figure 1). Suppose E₁ = 2 J. Figure E (J) 4E₁- 3E₁- 2E₁- E₁ 0- LLL + + K₁ + U₁ + Wext = K₁ + U₁ + AEth Part A What is the final potential energy of the system for this process? Express your answer with the appropriate units. U₁ = Value Submit HA Provide Feedback Request Answer PERE Units Pearson ?arrow_forwardI Review I Constar An "energy bar" contains 25 g of carbohydrates. For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. Part A If the energy bar was his only fuel, how far could a 68 kg person walk at 5.0 km/h? Express your answer in meters. d = Submit Previous Answers Request Answerarrow_forwardQuestion has TWO parts Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Part A - A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ (kiloJoules)? Part B - A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic power, in kW (kiloWatts)?arrow_forward
- You eat a sandwich. Later that day, you walk up a flight of stairs. a. Describe how energy changes type and location in the above situation. b. Explain how energy conservation applies to the situation.arrow_forwardProblem 1 A rectangular tank that is 4 feet long, 7 feet wide, and 9 feet deep is filled with a heavy liquid that weighs 60 pounds per cubic foot. In each part below, assume that the tank is initially full. Include correct units. c) How much work is done pumping two-thirds of the liquid out over the top of the tank? d) How much work is done pumping two-thirds of the liquid out of a spout 2 feet above the top of the tank? Note: C does not equal 60,480 lb-ft and D does not equal 80,640 lb-ftarrow_forwardQuestion Vvvvv Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this linearrow_forward
- A 950-Kg sports car collides into the rear end of a 2250-Kg SUV stopped at a red light. After the collision, the two cars lock together and slide forward with a speed of 2.00 m/s. a) Compute the initial velocity of the sports car. b) Compute the total kinetic energy before and after the collision. How much energy was dissipated in the collision? What happens to it?arrow_forwardProblem 2 A rectangular tank that is 88 feet long, 33 feet wide, and 1515 feet tall is filled with a liquid that has a density of p pounds per cubic foot. If a spout is connected to the top of the tank, how much work will it take to pump all of the liquid out of the tank through the spout? Work= ____________ft-lb How much work will it take to pump all of the liquid out of the tank through a spout that is T feet above the top of the tank? Work= ____________ft-lb Answers should be in terms of p and T.arrow_forwardProblem Power Output. In each case, find your average power in watts. Assume that riding a bike burns 100 Calories per mile. If you ride at a speed of 20 miles per hour, what is your average power output, in watts?arrow_forward
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