![Physics for Scientists and Engineers: Foundations and Connections](https://www.bartleby.com/isbn_cover_images/9781133939146/9781133939146_largeCoverImage.gif)
Concept explainers
CASE STUDY Concept Exercise 27.1 (page 829), we ignored air resistance acting on the ring launched by the experimenters in the case study. How would including air resistance change your answer to the question about the size of the spring? Does air resistance require that more, less, or the same amount of electric potential energy be stored in the spring? Explain your answers.
![Check Mark](/static/check-mark.png)
The size of the spring and the amount of potential energy when air resistance is considered.
Answer to Problem 1PQ
The size of the spring will be more compressed. And more potential energy is needed to attain the same final height.
Explanation of Solution
Write the equation for energy for a spring system.
Here,
If the air resistance is considered, the travelled height will be less. Again, the square of compressed distance is directly proportional to the height. Thus, the spring will be more compressed.
Due to air resistance, there will be a dissipation of mechanical energy. Thus, the total energy of the system will be reduced. To maintain that, there will be needed more amount of potential energy for the ring to attain the equal final height.
Want to see more full solutions like this?
Chapter 27 Solutions
Physics for Scientists and Engineers: Foundations and Connections
- A charged particle is moved in a uniform electric field between two points, A and B, as depicted in Figure P26.65. Does the change in the electric potential or the change in the electric potential energy of the particle depend on the sign of the charged particle? Consider the movement of the particle from A to B, and vice versa, and determine the signs of the electric potential and the electric potential energy in each possible scenario.arrow_forwardFind the equivalent capacitance for the network shown in Figure P27.26 if C1 = 1.00 F, C2 = 2.00 F, C3 = 3.00 F, C4 = 4.00 F, and C5 = 5.00 F. FIGURE P27.26 Problems 26 and 27.arrow_forward(a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a negatively charged Van de Graff terminal? (b) What is unreasonable about this result? (c) Which assumptions are responsible?arrow_forward
- Why do we need to be careful about work done on the system versus work done by the system in calculations?arrow_forwardAs shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor, exerting on it a force of magnitude F directed upward at an angle with the horizontal. (a) At what rate is the person doing work on the cleaner? (b) State as completely as you can the analogy between power in this situation and in an electric circuit.arrow_forwardUsing the usual convention that the electric potential energy is zero when charged particles are infinitely far apart, rank the electric potential energy from least to greatest for the systems shown in Figure P26.8. Explain your answers. FIGURE P26.8arrow_forward
- For the four capacitors in the circuit shown in Figure P27.30, CA = 1.00 F, CB = 4.00 F, CC = 2.00 F, and CD = 3.00 F. What is the equivalent capacitance between points a and b? Figure P27.30arrow_forward(a) On a particular day, it takes 9.60103 J of electrical energy to start a truck’s engine. Calculate the capacitance of a capacitor that could store that amount of energy at 12.0 V. (b) What is unreasonable about this result? (c) Which assumptions are responsible?arrow_forwardPlease read the question and leave notes on the answer where appropriate. Please DO NOT skip any steps. Please double check your answer.arrow_forward
- AQA Physics GCSE Student calculation sheet Name.... Class P5.4 To calculate the energy supplied we need to use the equation E-VxQ E= 12 x 150 = 1800 J Step 4: And finally, to calculate power = E or V x I Date So power = 1800 30 60 W Questions 1 the terminals? The potential difference between the two terminals on a battery is 9 volts. How much work (energy) is required to transfer 10 coulombs of charge across of 2 10 joules of work (energy) is required to transfer 2 coulombs of charge from X to Y. What is the potential difference between these two points? ont of a 3 To transfer a quantity of charge between points C and D of a circuit, which have a potential difference of 30 volts, 600 joules of energy is required. How much charge is transferred? 4 A 4 kilowatt cooker is used for 30 minutes. a How many joules of electrical energy are transferred? (1 mark) (2 marks) (2 marks) (3 markarrow_forwardWhy electric cars (which are amazing) still stink at towing and going up mountains. A family in Charlotte wants to drive to a campsite next to Mt. Mitchell. Their trip will take them 2km up in elevation. They have the choice of taking their top-of-the-line Tesla model S P100D, which when fully charged has 100 kWh of stored energy in the batteries (and for this problem is 100% efficient at converting its stored energy into kinetic energy) and a mass of 2200kg, or their choice of taking their 2021 Ford F-150. Gasoline has an energy density of 34.2 Megajoules per liter. The family owns the smallest 2021 Ford F-150, and so it has a fuel tank of 23 gallons. Assume the F-150's engine is able to convert 30% of the energy stored in its gasoline tank into kinetic energy (typical efficiency for gasoline engines), with the rest of the stored energy in the gasoline lost to heat. The mass of this model F-150 is about 2000kg. They are going to tow their big pop-up trailer to the campsite. For this…arrow_forwardWhy electric cars (which are amazing) still stink at towing and going up mountains. A family in Charlotte wants to drive to a campsite next to Mt. Mitchell. Their trip will take them 2km up in elevation. They have the choice of taking their top-of-the- line Tesla model S P100D, which when fully charged has 100 kWh of stored energy in the batteries (and for this problem is 100% efficient at converting its stored energy into kinetic energy) and a mass of 2200kg, or their choice of taking their 2021 Ford F-150. Gasoline has an energy density of 34.2 Megajoules per liter. The family owns the smallest 2021 Ford F-150, and so it has a fuel tank of 23 gallons. Assume the F-150's engine is able to convert 30% of the energy stored in its gasoline tank into kinetic energy (typical efficiency for gasoline engines), with the rest of the stored energy in the gasoline lost to heat. The mass of this model F-150 is about 2000kg. They are going to tow their big pop-up trailer to the campsite. For this…arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781133939146/9781133939146_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781133104261/9781133104261_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781938168161/9781938168161_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305116399/9781305116399_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)