×
Log in to StudySoup
Get Full Access to Physics, - 9 Edition - Chapter 23 - Problem 23.28
Join StudySoup for FREE
Get Full Access to Physics, - 9 Edition - Chapter 23 - Problem 23.28

Already have an account? Login here
×
Reset your password

A circuit contains an ac generator and a resistor. What

Physics, | 9th Edition | ISBN: 9780470879528 | Authors: John D. Cutnell, Kenneth W. Johnson ISBN: 9780470879528 211

Solution for problem 23.28 Chapter 23

Physics, | 9th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Physics, | 9th Edition | ISBN: 9780470879528 | Authors: John D. Cutnell, Kenneth W. Johnson

Physics, | 9th Edition

4 5 1 284 Reviews
13
0
Problem 23.28

A circuit contains an ac generator and a resistor. What happens to the average power dissipated in the resistor when the frequency is doubled and the rms voltage is tripled? (a) Nothing happens, because the average power does not depend on either the frequency or the rms voltage. (b) The average power doubles because it is proportional to the frequency. (c) The average power triples because it is proportional to the rms voltage. (d) The average power increases by a factor of 32 9 because it is proportional to the square of the rms voltage. (e) The average power increases by a factor of 2 3 6 because it is proportional to the product of the frequency and the rms voltage.

Step-by-Step Solution:
Step 1 of 3

Chapter 1 Economics: Social science dealing with scarce resources. Economics Social science dealing with the use of scarce resources to meet unlimited wants. 2-part definition – scarce resources and material wants. Scarcity Unlimited wants Resources Micro vs macro - Various differences 3 questions for an economic system What do we produce How do we produce Who will receive What answers these questions What are the choices Choice 1 Demand driven economy. Market mechanism. Prices are the signal! Free enterprise. Choice 2 Command system. Central planning. Centralized control. “Authority” knows best. What is the result Mixed economic systems Combination of both U.S. There is capitalism as well as command driven economies in a few places. Capitalism – Characteristics. It’s imperfect. There is no perfect economic system. 1. Limited government. 2. Private property. 3. System of markets and prices. (Stabilizing force). - What is a market An institution that brings buyers and sellers together. - Prices are a SIGNAL. Note The essence of capitalism is not just a matter of exchanges as an end it is also about creating value by mobilizing both ingenuity and human energy. “Morality of capitalism” Palmer 4. Self-interest (Driving force) 5. Competition (Regulating force) 6. Free enterprise. Defined The freedom of businesses and individuals to organize and operate for profit in a competitive system without interference from government beyond same basic regulations necessary to protect the public. Resources (Factors of production) (THIS COULD BE ON THE EXAM) Human - Labor - Entrepreneurial Ability - Human capital Property - Land, etc. - Economic capital (The textbook refers to this as physical capital) o “Manufactured aid to production.” At any point in time they may be scarce What about money Not a resource Not productive per se Consider what we lost on 9/11 More physical capital or human capital. Are resources the only answer to prosperity Per economic studies 1. Political stability 2. Rule of law 3. Private property Chapter 2: Cost of highest value Miscellaneous terms Opportunity cost (Test question) “Cost of the highest valued, next-best alternative that is sacrificed.” We all have opportunity costs. Time- the true opportunity cost - How do we use our time… What do the numbers mean Millions Billions Trillions A “Time” perspective - Million seconds o 11 days (approx) - Billion seconds o 32 years (approx) - Trillion seconds o 32,000 years (approx.) Production possibilities curve. - Useful tool - 3 assumptions o Fixed technology o Fixed resources o Efficiency What do we see Marginal costs. Opportunity costs Increasing marginal costs Chapter 3: Supply and demand Variables and parameters Ceteris Paribus – “all other things equal” 3 Laws of economics: The law of demand: As price goes up, the quantity demanded goes down and vice versa. The law of supply: As price of input goes up, the quantity supplied goes up and vice versa. Law of equilibrium: The part where demand and supply intersect. The quantity demanded equals quantity supplied. Non-price determinants of demand - Tastes and preferences - Income= For normal goods, income increases and demand increases. For inferior goods, income increases and demand decreases. - Price of related goods - Expected future price. - Number of consumers that are willing to buy. Non-price determinants of supply - Price of inputs - Technology - Regulations - Subsidies - Price of other goods - Expectations New York once banned any soft drinks that were above 20oz. Philadelphia tries a different approach - Tax on sugary drinks. o Passed by city council (13-4) - 1.5 cents per oz. - At the distribution level… - Money used for o What else… education - Remember- if you want less of something… o TAX IT!! Price and wage controls Price ceiling- Limiting price increases - Rent control - Gasoline prices- 1970’s - Nixon wage and price controls- 1970 Price floor- Minimum price is established Price ceiling - Rent control o New York o California o Other areas o Per text- approx. 200 cities and towns What’s the purpose Affordable housing Moral intervention () What are the results - Shortage - T/F of income (From…to…) o LANDLORD TO TENANT! - No incentive to construct housing. - Non-price discrimination. - Black market. o Grease the palm… o Key deposit… Reduce maintenance - What gets left out - What happens to property o Property values o Tax base Law of unintended consequences. Minimum wage What’s the purpose Who works for minimum wage Update- the push for 15 dollars - Seattle, San Francisco, LA – move to 15 dollars per hour is on the way. - Seattle – 9.47 to 11.00 - San Francisco- 10.47 to 12.25 - LA- 15.37 for Hotel Workers - CBO- est. a Federal move to 10.10 = 500,000 less jobs. - In regards to the top cities… first wave results… o Seattle= Loss of 1,100 food service jobs. o San Fran= Loss of 2,000 jobs. What are the results - Surplus. - Reduced Qd for labor. - Layoffs. - Reduced hours. - Reduced benefits. - Wage progression (among other workers) - Some economists (Krugman) disagree… Who gets the boot - Highest paid o No - Least productive - Lowest skilled Is there ALWAYS a surplus - Mid-cities - What does the graph look like Price controls- final observations - Simple ideas in theory, but EXTREMELY complicated exercises in practice. - Political pressures invariably arise among “favored” producers. - Unintended consequences. They DISTORT markets…

Step 2 of 3

Chapter 23, Problem 23.28 is Solved
Step 3 of 3

Textbook: Physics,
Edition: 9
Author: John D. Cutnell, Kenneth W. Johnson
ISBN: 9780470879528

This textbook survival guide was created for the textbook: Physics,, edition: 9. Since the solution to 23.28 from 23 chapter was answered, more than 243 students have viewed the full step-by-step answer. Physics, was written by and is associated to the ISBN: 9780470879528. This full solution covers the following key subjects: . This expansive textbook survival guide covers 32 chapters, and 3930 solutions. The answer to “A circuit contains an ac generator and a resistor. What happens to the average power dissipated in the resistor when the frequency is doubled and the rms voltage is tripled? (a) Nothing happens, because the average power does not depend on either the frequency or the rms voltage. (b) The average power doubles because it is proportional to the frequency. (c) The average power triples because it is proportional to the rms voltage. (d) The average power increases by a factor of 32 9 because it is proportional to the square of the rms voltage. (e) The average power increases by a factor of 2 3 6 because it is proportional to the product of the frequency and the rms voltage.” is broken down into a number of easy to follow steps, and 121 words. The full step-by-step solution to problem: 23.28 from chapter: 23 was answered by , our top Physics solution expert on 01/04/18, 08:42PM.

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

A circuit contains an ac generator and a resistor. What