EBK BASIC TECHNICAL MATHEMATICS
EBK BASIC TECHNICAL MATHEMATICS
11th Edition
ISBN: 9780134508290
Author: Evans
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 27, Problem 93RE
To determine

To find: The change in the value of ω as θ changes from 32.50° to 32.75°.

Blurred answer
Students have asked these similar questions
If a uniform distribution is defined over the interval from 6 to 10, then answer the followings: What is the mean of this uniform distribution? Show that the probability of any value between 6 and 10 is equal to 1.0 Find the probability of a value more than 7. Find the probability of a value between 7 and 9.   The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $20 and $30 per share. What is the probability that the stock price will be: More than $27? Less than or equal to $24?   The April rainfall in Flagstaff, Arizona, follows a uniform distribution between 0.5 and 3.00 inches. What is the mean amount of rainfall for the month? What is the probability of less than an inch of rain for the month? What is the probability of exactly 1.00 inch of rain? What is the probability of more than 1.50 inches of rain for the month? The best way to solve this problem is begin by creating a chart. Clearly mark the range, identifying the lower and upper…
Problem 1: The mean hourly pay of an American Airlines flight attendant is normally distributed with a mean of 40 per hour and a standard deviation of 3.00 per hour. What is the probability that the hourly pay of a randomly selected flight attendant is: Between the mean and $45 per hour? More than $45 per hour? Less than $32 per hour?   Problem 2: The mean of a normal probability distribution is 400 pounds. The standard deviation is 10 pounds. What is the area between 415 pounds and the mean of 400 pounds? What is the area between the mean and 395 pounds? What is the probability of randomly selecting a value less than 395 pounds?   Problem 3: In New York State, the mean salary for high school teachers in 2022 was 81,410 with a standard deviation of 9,500. Only Alaska’s mean salary was higher. Assume New York’s state salaries follow a normal distribution. What percent of New York State high school teachers earn between 70,000 and 75,000? What percent of New York State high school…
For all integers a and b if a is congruent to 0(mod n) and b is congruent to 0(mod n) then a+b is congruent 0(mod n) DRAW A KNOW-SHOW TABLE:

Chapter 27 Solutions

EBK BASIC TECHNICAL MATHEMATICS

Ch. 27.1 - Prob. 9ECh. 27.1 - Prob. 10ECh. 27.1 - Prob. 11ECh. 27.1 - Prob. 12ECh. 27.1 - Prob. 13ECh. 27.1 - Prob. 14ECh. 27.1 - Prob. 15ECh. 27.1 - Prob. 16ECh. 27.1 - Prob. 17ECh. 27.1 - Prob. 18ECh. 27.1 - Prob. 19ECh. 27.1 - Prob. 20ECh. 27.1 - Prob. 21ECh. 27.1 - Prob. 22ECh. 27.1 - Prob. 23ECh. 27.1 - Prob. 24ECh. 27.1 - Prob. 25ECh. 27.1 - In Exercises 3–34, find the derivatives of the...Ch. 27.1 - Prob. 27ECh. 27.1 - Prob. 28ECh. 27.1 - Prob. 29ECh. 27.1 - Prob. 30ECh. 27.1 - Prob. 31ECh. 27.1 - Prob. 32ECh. 27.1 - Prob. 33ECh. 27.1 - Prob. 34ECh. 27.1 - Prob. 35ECh. 27.1 - Prob. 36ECh. 27.1 - Prob. 37ECh. 27.1 - Prob. 38ECh. 27.1 - Prob. 39ECh. 27.1 - Prob. 40ECh. 27.1 - Prob. 41ECh. 27.1 - Prob. 42ECh. 27.1 - Prob. 43ECh. 27.1 - Prob. 44ECh. 27.1 - Prob. 45ECh. 27.1 - Prob. 46ECh. 27.1 - Prob. 47ECh. 27.1 - Prob. 48ECh. 27.1 - Prob. 49ECh. 27.1 - Prob. 50ECh. 27.1 - Prob. 51ECh. 27.1 - Prob. 52ECh. 27.1 - Prob. 53ECh. 27.1 - Prob. 54ECh. 27.1 - The blade of a saber saw moves vertically up and...Ch. 27.1 - Prob. 56ECh. 27.1 - Prob. 57ECh. 27.1 - Prob. 58ECh. 27.1 - Prob. 59ECh. 27.1 - Prob. 60ECh. 27.2 - Prob. 1PECh. 27.2 - Prob. 2PECh. 27.2 - Prob. 1ECh. 27.2 - Prob. 2ECh. 27.2 - Prob. 3ECh. 27.2 - Prob. 4ECh. 27.2 - Prob. 5ECh. 27.2 - Prob. 6ECh. 27.2 - Prob. 7ECh. 27.2 - Prob. 8ECh. 27.2 - Prob. 9ECh. 27.2 - Prob. 10ECh. 27.2 - Prob. 11ECh. 27.2 - Prob. 12ECh. 27.2 - Prob. 13ECh. 27.2 - Prob. 14ECh. 27.2 - Prob. 15ECh. 27.2 - Prob. 16ECh. 27.2 - Prob. 17ECh. 27.2 - Prob. 18ECh. 27.2 - Prob. 19ECh. 27.2 - Prob. 20ECh. 27.2 - Prob. 21ECh. 27.2 - Prob. 22ECh. 27.2 - Prob. 23ECh. 27.2 - Prob. 24ECh. 27.2 - Prob. 25ECh. 27.2 - Prob. 26ECh. 27.2 - Prob. 27ECh. 27.2 - Prob. 28ECh. 27.2 - Prob. 29ECh. 27.2 - Prob. 30ECh. 27.2 - Prob. 31ECh. 27.2 - Prob. 32ECh. 27.2 - Prob. 33ECh. 27.2 - In Exercises 3–34, find the derivatives of the...Ch. 27.2 - Prob. 35ECh. 27.2 - Prob. 36ECh. 27.2 - Prob. 37ECh. 27.2 - Prob. 38ECh. 27.2 - Prob. 39ECh. 27.2 - Prob. 40ECh. 27.2 - Prob. 41ECh. 27.2 - Prob. 42ECh. 27.2 - Prob. 43ECh. 27.2 - Prob. 44ECh. 27.2 - Prob. 45ECh. 27.2 - Prob. 46ECh. 27.2 - Prob. 47ECh. 27.2 - Prob. 48ECh. 27.2 - Prob. 49ECh. 27.2 - Prob. 50ECh. 27.2 - Prob. 51ECh. 27.2 - Prob. 52ECh. 27.2 - Prob. 53ECh. 27.2 - Prob. 54ECh. 27.3 - Prob. 1PECh. 27.3 - Prob. 2PECh. 27.3 - Prob. 1ECh. 27.3 - Prob. 2ECh. 27.3 - Prob. 3ECh. 27.3 - Prob. 4ECh. 27.3 - Prob. 5ECh. 27.3 - Prob. 6ECh. 27.3 - Prob. 7ECh. 27.3 - Prob. 8ECh. 27.3 - Prob. 9ECh. 27.3 - Prob. 10ECh. 27.3 - Prob. 11ECh. 27.3 - Prob. 12ECh. 27.3 - Prob. 13ECh. 27.3 - Prob. 14ECh. 27.3 - Prob. 15ECh. 27.3 - Prob. 16ECh. 27.3 - Prob. 17ECh. 27.3 - Prob. 18ECh. 27.3 - Prob. 19ECh. 27.3 - Prob. 20ECh. 27.3 - Prob. 21ECh. 27.3 - Prob. 22ECh. 27.3 - Prob. 23ECh. 27.3 - Prob. 24ECh. 27.3 - Prob. 25ECh. 27.3 - Prob. 26ECh. 27.3 - Prob. 27ECh. 27.3 - Prob. 28ECh. 27.3 - Prob. 29ECh. 27.3 - Prob. 30ECh. 27.3 - Prob. 31ECh. 27.3 - Prob. 32ECh. 27.3 - Prob. 33ECh. 27.3 - Prob. 34ECh. 27.3 - Prob. 35ECh. 27.3 - Prob. 36ECh. 27.3 - Prob. 37ECh. 27.3 - Prob. 38ECh. 27.3 - Prob. 39ECh. 27.3 - Prob. 40ECh. 27.3 - Prob. 41ECh. 27.3 - Prob. 42ECh. 27.3 - Prob. 43ECh. 27.3 - Prob. 44ECh. 27.3 - Prob. 45ECh. 27.3 - Prob. 46ECh. 27.3 - Prob. 47ECh. 27.3 - Prob. 48ECh. 27.3 - Prob. 49ECh. 27.3 - Prob. 50ECh. 27.3 - Prob. 51ECh. 27.3 - Prob. 52ECh. 27.3 - Prob. 53ECh. 27.3 - Prob. 54ECh. 27.4 - Prob. 1PECh. 27.4 - Prob. 1ECh. 27.4 - Prob. 2ECh. 27.4 - Prob. 3ECh. 27.4 - Prob. 4ECh. 27.4 - Prob. 5ECh. 27.4 - Prob. 6ECh. 27.4 - Prob. 7ECh. 27.4 - Prob. 8ECh. 27.4 - Prob. 9ECh. 27.4 - Prob. 10ECh. 27.4 - Prob. 11ECh. 27.4 - Prob. 12ECh. 27.4 - In Exercises 3–40, solve the given...Ch. 27.4 - Prob. 14ECh. 27.4 - Prob. 15ECh. 27.4 - Prob. 16ECh. 27.4 - Prob. 17ECh. 27.4 - In Exercises 3–40, solve the given...Ch. 27.4 - Prob. 19ECh. 27.4 - Prob. 20ECh. 27.4 - Prob. 21ECh. 27.4 - Prob. 22ECh. 27.4 - Prob. 23ECh. 27.4 - Prob. 24ECh. 27.4 - Prob. 25ECh. 27.4 - Prob. 26ECh. 27.4 - Prob. 27ECh. 27.4 - Prob. 28ECh. 27.4 - Prob. 29ECh. 27.4 - Prob. 30ECh. 27.4 - Prob. 31ECh. 27.4 - Prob. 32ECh. 27.4 - Prob. 33ECh. 27.4 - Prob. 34ECh. 27.4 - Prob. 35ECh. 27.4 - Prob. 37ECh. 27.4 - Prob. 39ECh. 27.4 - Prob. 40ECh. 27.5 - Prob. 1PECh. 27.5 - Prob. 2PECh. 27.5 - Prob. 1ECh. 27.5 - Prob. 2ECh. 27.5 - Prob. 3ECh. 27.5 - Prob. 4ECh. 27.5 - Prob. 5ECh. 27.5 - Prob. 6ECh. 27.5 - Prob. 7ECh. 27.5 - Prob. 8ECh. 27.5 - In Exercises 3–34, find the derivatives of the...Ch. 27.5 - Prob. 10ECh. 27.5 - Prob. 11ECh. 27.5 - Prob. 12ECh. 27.5 - Prob. 13ECh. 27.5 - Prob. 14ECh. 27.5 - Prob. 15ECh. 27.5 - Prob. 16ECh. 27.5 - Prob. 17ECh. 27.5 - Prob. 18ECh. 27.5 - Prob. 19ECh. 27.5 - Prob. 20ECh. 27.5 - Prob. 21ECh. 27.5 - Prob. 22ECh. 27.5 - Prob. 23ECh. 27.5 - Prob. 24ECh. 27.5 - Prob. 25ECh. 27.5 - Prob. 26ECh. 27.5 - Prob. 27ECh. 27.5 - Prob. 28ECh. 27.5 - Prob. 29ECh. 27.5 - Prob. 30ECh. 27.5 - Prob. 31ECh. 27.5 - Prob. 32ECh. 27.5 - Prob. 33ECh. 27.5 - Prob. 34ECh. 27.5 - Prob. 35ECh. 27.5 - Prob. 36ECh. 27.5 - Prob. 37ECh. 27.5 - Prob. 38ECh. 27.5 - Prob. 39ECh. 27.5 - Prob. 40ECh. 27.5 - Prob. 41ECh. 27.5 - Prob. 42ECh. 27.5 - Prob. 43ECh. 27.5 - Prob. 44ECh. 27.5 - Prob. 45ECh. 27.5 - Prob. 46ECh. 27.5 - Prob. 47ECh. 27.5 - Prob. 48ECh. 27.5 - Prob. 49ECh. 27.5 - Prob. 50ECh. 27.5 - Prob. 51ECh. 27.5 - Prob. 52ECh. 27.5 - Prob. 53ECh. 27.5 - Prob. 54ECh. 27.5 - Prob. 55ECh. 27.5 - Prob. 56ECh. 27.6 - Prob. 1PECh. 27.6 - Prob. 2PECh. 27.6 - Prob. 1ECh. 27.6 - Prob. 2ECh. 27.6 - Prob. 3ECh. 27.6 - Prob. 4ECh. 27.6 - Prob. 5ECh. 27.6 - Prob. 6ECh. 27.6 - Prob. 7ECh. 27.6 - Prob. 8ECh. 27.6 - Prob. 9ECh. 27.6 - Prob. 10ECh. 27.6 - Prob. 11ECh. 27.6 - Prob. 12ECh. 27.6 - Prob. 13ECh. 27.6 - Prob. 14ECh. 27.6 - Prob. 15ECh. 27.6 - Prob. 16ECh. 27.6 - Prob. 17ECh. 27.6 - Prob. 18ECh. 27.6 - Prob. 19ECh. 27.6 - Prob. 20ECh. 27.6 - Prob. 21ECh. 27.6 - Prob. 22ECh. 27.6 - Prob. 23ECh. 27.6 - Prob. 24ECh. 27.6 - Prob. 25ECh. 27.6 - Prob. 26ECh. 27.6 - Prob. 27ECh. 27.6 - Prob. 28ECh. 27.6 - Prob. 29ECh. 27.6 - Prob. 30ECh. 27.6 - Prob. 31ECh. 27.6 - Prob. 32ECh. 27.6 - Prob. 33ECh. 27.6 - Prob. 34ECh. 27.6 - Prob. 35ECh. 27.6 - Prob. 36ECh. 27.6 - Prob. 37ECh. 27.6 - Prob. 38ECh. 27.6 - Prob. 39ECh. 27.6 - Prob. 40ECh. 27.6 - Prob. 41ECh. 27.6 - Prob. 42ECh. 27.6 - Prob. 43ECh. 27.6 - Prob. 44ECh. 27.6 - Prob. 45ECh. 27.6 - In Exercises 33–54, solve the given...Ch. 27.6 - Prob. 47ECh. 27.6 - Prob. 48ECh. 27.6 - Prob. 49ECh. 27.6 - Prob. 50ECh. 27.6 - Prob. 51ECh. 27.6 - Prob. 52ECh. 27.6 - Prob. 53ECh. 27.6 - Prob. 54ECh. 27.6 - Prob. 55ECh. 27.6 - Prob. 56ECh. 27.7 - Prob. 1PECh. 27.7 - Prob. 2PECh. 27.7 - Prob. 1ECh. 27.7 - Prob. 2ECh. 27.7 - Prob. 3ECh. 27.7 - Prob. 4ECh. 27.7 - In Exercises 3–36, evaluate each limit (if it...Ch. 27.7 - Prob. 6ECh. 27.7 - Prob. 7ECh. 27.7 - Prob. 8ECh. 27.7 - Prob. 9ECh. 27.7 - Prob. 10ECh. 27.7 - Prob. 11ECh. 27.7 - Prob. 12ECh. 27.7 - Prob. 13ECh. 27.7 - Prob. 14ECh. 27.7 - Prob. 15ECh. 27.7 - Prob. 16ECh. 27.7 - Prob. 17ECh. 27.7 - Prob. 18ECh. 27.7 - Prob. 19ECh. 27.7 - Prob. 20ECh. 27.7 - Prob. 21ECh. 27.7 - Prob. 22ECh. 27.7 - Prob. 23ECh. 27.7 - Prob. 24ECh. 27.7 - Prob. 25ECh. 27.7 - Prob. 26ECh. 27.7 - Prob. 27ECh. 27.7 - Prob. 28ECh. 27.7 - Prob. 29ECh. 27.7 - In Exercises 3–36, evaluate each limit (if it...Ch. 27.7 - Prob. 31ECh. 27.7 - Prob. 32ECh. 27.7 - Prob. 33ECh. 27.7 - Prob. 34ECh. 27.7 - Prob. 35ECh. 27.7 - Prob. 36ECh. 27.7 - Prob. 37ECh. 27.7 - Prob. 38ECh. 27.7 - Prob. 39ECh. 27.7 - Prob. 40ECh. 27.7 - Prob. 41ECh. 27.7 - Prob. 42ECh. 27.7 - Prob. 43ECh. 27.7 - Prob. 44ECh. 27.7 - Prob. 45ECh. 27.7 - Prob. 46ECh. 27.7 - Prob. 47ECh. 27.7 - Prob. 48ECh. 27.8 - Prob. 1PECh. 27.8 - In Exercises 1 and 2, make the given changes in...Ch. 27.8 - Prob. 2ECh. 27.8 - In Exercises 3–14, sketch the graphs of the given...Ch. 27.8 - Prob. 4ECh. 27.8 - In Exercises 3–14, sketch the graphs of the given...Ch. 27.8 - Prob. 6ECh. 27.8 - Prob. 7ECh. 27.8 - Prob. 8ECh. 27.8 - Prob. 9ECh. 27.8 - Prob. 10ECh. 27.8 - Prob. 11ECh. 27.8 - In Exercises 3–14, sketch the graphs of the given...Ch. 27.8 - Prob. 13ECh. 27.8 - Prob. 14ECh. 27.8 - Prob. 15ECh. 27.8 - Prob. 16ECh. 27.8 - Prob. 17ECh. 27.8 - Prob. 18ECh. 27.8 - Prob. 19ECh. 27.8 - Prob. 20ECh. 27.8 - Prob. 21ECh. 27.8 - Prob. 22ECh. 27.8 - Prob. 23ECh. 27.8 - Prob. 25ECh. 27.8 - Prob. 26ECh. 27.8 - Prob. 27ECh. 27.8 - Prob. 28ECh. 27.8 - Prob. 29ECh. 27.8 - Prob. 30ECh. 27.8 - Prob. 31ECh. 27.8 - Prob. 32ECh. 27.8 - Prob. 33ECh. 27.8 - Prob. 34ECh. 27.8 - The energy E (in J) dissipated by a certain...Ch. 27.8 - Prob. 36ECh. 27.8 - Prob. 37ECh. 27.8 - Prob. 39ECh. 27.8 - A package of weather instruments is propelled into...Ch. 27.8 - Prob. 41ECh. 27.8 - Prob. 42ECh. 27.8 - Prob. 43ECh. 27.8 - Prob. 45ECh. 27.8 - Prob. 46ECh. 27 - Prob. 1RECh. 27 - Prob. 2RECh. 27 - Prob. 3RECh. 27 - Prob. 4RECh. 27 - Prob. 5RECh. 27 - Prob. 6RECh. 27 - Prob. 7RECh. 27 - Prob. 8RECh. 27 - Prob. 9RECh. 27 - Prob. 10RECh. 27 - Prob. 11RECh. 27 - Prob. 12RECh. 27 - Prob. 13RECh. 27 - Prob. 14RECh. 27 - Prob. 15RECh. 27 - Prob. 16RECh. 27 - Prob. 17RECh. 27 - Prob. 18RECh. 27 - Prob. 19RECh. 27 - Prob. 20RECh. 27 - Prob. 21RECh. 27 - Prob. 22RECh. 27 - Prob. 23RECh. 27 - Prob. 24RECh. 27 - Prob. 25RECh. 27 - Prob. 26RECh. 27 - Prob. 27RECh. 27 - Prob. 28RECh. 27 - Prob. 29RECh. 27 - Prob. 30RECh. 27 - Prob. 31RECh. 27 - Prob. 32RECh. 27 - Prob. 33RECh. 27 - Prob. 34RECh. 27 - Prob. 35RECh. 27 - Prob. 36RECh. 27 - Prob. 37RECh. 27 - Prob. 38RECh. 27 - Prob. 39RECh. 27 - Prob. 40RECh. 27 - Prob. 41RECh. 27 - Prob. 42RECh. 27 - Prob. 43RECh. 27 - Prob. 44RECh. 27 - Prob. 45RECh. 27 - Prob. 46RECh. 27 - Prob. 47RECh. 27 - Prob. 48RECh. 27 - Prob. 49RECh. 27 - Prob. 50RECh. 27 - Prob. 51RECh. 27 - Prob. 52RECh. 27 - Prob. 53RECh. 27 - Prob. 54RECh. 27 - Prob. 55RECh. 27 - Prob. 56RECh. 27 - Prob. 57RECh. 27 - Prob. 58RECh. 27 - Prob. 59RECh. 27 - Prob. 60RECh. 27 - Prob. 61RECh. 27 - Prob. 62RECh. 27 - Prob. 63RECh. 27 - Prob. 64RECh. 27 - Prob. 65RECh. 27 - Prob. 66RECh. 27 - Prob. 67RECh. 27 - Prob. 68RECh. 27 - Prob. 69RECh. 27 - Prob. 70RECh. 27 - Prob. 71RECh. 27 - Prob. 72RECh. 27 - Prob. 73RECh. 27 - Prob. 74RECh. 27 - Prob. 75RECh. 27 - Prob. 76RECh. 27 - Prob. 77RECh. 27 - Prob. 78RECh. 27 - Prob. 79RECh. 27 - Prob. 80RECh. 27 - Prob. 81RECh. 27 - Prob. 82RECh. 27 - Prob. 83RECh. 27 - Prob. 84RECh. 27 - Prob. 85RECh. 27 - Prob. 86RECh. 27 - Prob. 87RECh. 27 - Prob. 88RECh. 27 - Prob. 89RECh. 27 - Prob. 90RECh. 27 - Prob. 91RECh. 27 - Prob. 92RECh. 27 - Prob. 93RECh. 27 - Prob. 94RECh. 27 - Prob. 95RECh. 27 - Prob. 96RECh. 27 - Prob. 97RECh. 27 - Prob. 98RECh. 27 - Prob. 99RECh. 27 - Prob. 100RECh. 27 - Prob. 101RECh. 27 - Prob. 102RECh. 27 - Prob. 103RECh. 27 - Prob. 104RECh. 27 - Prob. 105RECh. 27 - Prob. 106RECh. 27 - Prob. 107RECh. 27 - Prob. 108RECh. 27 - Prob. 109RECh. 27 - Prob. 110RECh. 27 - Prob. 111RECh. 27 - Prob. 112RECh. 27 - Prob. 113RECh. 27 - Prob. 1PTCh. 27 - Prob. 2PTCh. 27 - Prob. 3PTCh. 27 - Prob. 4PTCh. 27 - Prob. 5PTCh. 27 - Prob. 6PTCh. 27 - Prob. 7PTCh. 27 - Prob. 8PTCh. 27 - Prob. 9PT
Knowledge Booster
Background pattern image
Math
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Discrete Mathematics and Its Applications ( 8th I...
Math
ISBN:9781259676512
Author:Kenneth H Rosen
Publisher:McGraw-Hill Education
Text book image
Mathematics for Elementary Teachers with Activiti...
Math
ISBN:9780134392790
Author:Beckmann, Sybilla
Publisher:PEARSON
Text book image
Calculus Volume 1
Math
ISBN:9781938168024
Author:Strang, Gilbert
Publisher:OpenStax College
Text book image
Thinking Mathematically (7th Edition)
Math
ISBN:9780134683713
Author:Robert F. Blitzer
Publisher:PEARSON
Text book image
Discrete Mathematics With Applications
Math
ISBN:9781337694193
Author:EPP, Susanna S.
Publisher:Cengage Learning,
Text book image
Pathways To Math Literacy (looseleaf)
Math
ISBN:9781259985607
Author:David Sobecki Professor, Brian A. Mercer
Publisher:McGraw-Hill Education
01 - What Is A Differential Equation in Calculus? Learn to Solve Ordinary Differential Equations.; Author: Math and Science;https://www.youtube.com/watch?v=K80YEHQpx9g;License: Standard YouTube License, CC-BY
Higher Order Differential Equation with constant coefficient (GATE) (Part 1) l GATE 2018; Author: GATE Lectures by Dishank;https://www.youtube.com/watch?v=ODxP7BbqAjA;License: Standard YouTube License, CC-BY
Solution of Differential Equations and Initial Value Problems; Author: Jefril Amboy;https://www.youtube.com/watch?v=Q68sk7XS-dc;License: Standard YouTube License, CC-BY