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Iwannaknow
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Iwannaknow
Questions (117)
Two similar waves are traveling through the same medium. Wave A has a frequency that is 3 times that of wave B.
How do their
2 answers
267 views
Question
The table below shows the speed of sound in water at different temperatures and salinities. Speed of Sound in Water at
3 answers
519 views
How do the frequencies and the speeds of yellow light and blue light compare?(1 point)
Which of the following is the best answer?
25 answers
1,588 views
John F. Kennedy's inauguration speech, January 1961.
Let every nation know, whether it wishes us well or ill, that we shall pay
7 answers
562 views
1. Existentialism was the leading philosophy of thought to which most modernist writers adhered.
a) True b) False 2. The prefix
2 answers
163 views
Select the best answer for each question.
1. Existentialism was the leading philosophy of thought to which most modernist writers
1 answer
176 views
Select the best choice for each question.
3. A participle is a verb that is used as an adjective. a) True b) False 4. Like
1 answer
98 views
Select the best choice for each question.
3. A participle is a verb that is used as an adjective. a) True b) False
1 answer
74 views
Select the best answer.
4. Like painters and photographers of the same point, many modernist writers experimented with a) imagery
1 answer
101 views
What did like painters and photographers of the same point, many modernist writers experimented with?
1 answer
116 views
Select one answer
What did like painters and photographers of the same point, many modernist writers experimented with? A)
4 answers
118 views
Pick which choice is best
An author's attitude toward a piece of work is a) tone b) mood c) voice d) style
2 answers
82 views
Where should the comma be placed in following sentence?
The chameleon turning from tan to green, became invisible. A) after
4 answers
85 views
What is character development? What is characterization? What is the difference and similarities between character development
1 answer
120 views
Choose the best answer.
Used to design commercially printed documents. a) RGB b) CYMK c) HUE Combines percentages of cyan,
1 answer
83 views
Used to design electronic documents.
a) RGB b) CYMK c) HUE
1 answer
89 views
Pick one of the following answer choices.
Used to design electronic documents. a) RGB b) CYMK c) HUE
2 answers
92 views
Choose the best answer.
Subtractive Colors. a) RGB b) CYMK c) HUE
1 answer
86 views
Choose the best answer.
Uses percentages of black. a) RGB b) CYMK c) HUE
1 answer
77 views
Choose the best option
Additive colors. A) RGB B) CYMK C) HUE
1 answer
81 views
Additive colors.
A) RGB B) CYMK C) HUE
1 answer
80 views
Most graphics programs include this and grayscale.
A) RGB B) CYMK C) HUE
1 answer
76 views
Shows how bright or dull it is.
a) RGB b) CYMK c) HUE
2 answers
75 views
Shows how bright or dull it is.
Choose one of the following, which is best: a) RGB b) CYMK c) HUE
1 answer
81 views
Values may use percentages.
A) RGB B) CYMK C) HUE
1 answer
74 views
Choose the best answer.
Values may use percentages. A) RGB B) CYMK C) HUE
1 answer
82 views
Pick the best answer/response
The specific heat of a substance is 0.215 J/g°C. How much energy is required to raise the
4 answers
144 views
Which of the following is NOT a valid reason that less energy is transferred at each level of the food chain?
A. Energy is
1 answer
121 views
How is the level of entropy in the universe impacted as energy moves through a food chain?
2 answers
164 views
As researchers cool a substance close to absolute zero, what happens?
A) The work needed to cool it further decreases, becoming
2 answers
97 views
What is true of heat and temperature?
A) Heat and temperature are not related to each other. B) Heat is the measure of the
1 answer
156 views
Why is it impossible for a heat engine to be 100% efficient?
A) Work cannot be done on a heat engine. B) Some heat is always lost
1 answer
117 views
Decide which kind of license is best for each student's work.
An article that Walter finds in a government database. A) Copyright
2 answers
117 views
Sally takes a photo of the mountains near her home. She uploads the photo to the Internet with "Copyright 2011 Sally Johnson"
2 answers
136 views
Pick the best option.
When you copyright something, others have to ask your permission before using it. A) True B) False
1 answer
83 views
Pick the best option.
Even though Sally put "Copyright" on her photo, the blogger doesn't have to ask permission because he
1 answer
89 views
Pick the best option.
Copyright is pretty relaxed, so even though Sally put "Copyright" on her photo the blogger can do what he
3 answers
251 views
Pick the best option.
When you copyright something, the only way that others can use the work without your permission is if they
1 answer
92 views
Let f(x) = -2x + 4 and g(x) = -6x - 7.
a) Find f(x) * g(x). b) Find f(g(4)).
1 answer
51 views
What is the inverse of the given relation?
y = 3x + 12
1 answer
94 views
What is the inverse of f if f(x) = ^3 square root of x - 4?
1 answer
62 views
What is the solution of the equation?
3 5√ (x + 2) 3 + 3 = 27
1 answer
63 views
What is the solution of the equation?
3 ^2sqrt (x + 2)^3 + 3 = 27
1 answer
63 views
Find the annual percent increase of decrease that y = 0.35(2.3)^x models.
a) 230% increase b) 130% increase c) 30% decrease d)
1 answer
109 views
3. An initial population of 175 quail increases at an annual rate of 22%. Write an exponential function to model the quail
1 answer
198 views
An initial population of 175 quail increases at an annual rate of 22%. Write an exponential function to model the quail
1 answer
397 views
Suppose you deposit $5,000 in savings account that earns 3% annual interest. If you make no other withdrawals or deposits, how
3 answers
186 views
The population of wild horses on a wildlife refuge decreased from 110 to 99 in a year. If this trend were to continue, what
2 answers
234 views
What is the speed of light in a vacuum?
a) v=3⋅108 m/s v equals 3 times 10 superscript 8 baseline m per s b) v=2⋅108 m/s v
3 answers
84 views
What is the speed of light in a vacuum?(1 point)
Responses a) v=3⋅10^8 m/s v equals 3 times 10 superscript 8 baseline m per s
5 answers
124 views
The wavelengths of visible light vary from about 300 nm to 700 nm. What is the range of frequencies of visible light in a
4 answers
348 views
An object absorbs red, orange, yellow, blue, indigo, and violet light. What color is it?(1 point)
Responses a) indigo b) blue c)
4 answers
108 views
An object absorbs red, orange, yellow, blue, indigo, and violet light. What color is it?(1 point)
Pick one of the following: a)
4 answers
160 views
Why is a polarized filter helpful to a photographer?(1 point)
Responses a) It blocks some light but not all. It blocks some light
4 answers
322 views
What effect do clouds have on the color of the sky?(1 point)
Responses a) They reflect light waves. They reflect light waves. b)
3 answers
219 views
When a sound wave propagates through air, how do the air molecules move?(1 point)
Responses a) The air molecules move randomly.
3 answers
320 views
Match the term with the description.
Terms: 1. 24th Amendment 2. Civil Rights Act of 1964 3. Voting Rights Act of 1965 4.
1 answer
102 views
Match these three men to thier ideas of how to achieve civil rights. Be careful! Read closely.
Men: 1. Stokely Carmichael 2.
1 answer
86 views
What tragic event happened in Tennessee on April 4, 1968?
1 answer
163 views
Which one of these statements are true?
Choose one. a) Kennedy and Nikita Kruschev argued for the existence of nuclear bases very
1 answer
90 views
What tragic event happened on November 21, 1963?
1 answer
85 views
In what ways were Johnson’s “Great Society” programs similar to Roosevelt’s New Deal and others? This should be a fully
2 answers
156 views
How will/does the Medicare Act of 1965 have a positive effect on you and the people you love?
1 answer
77 views
Watch this very short video about the Housing and Urban Development Act of 1965. What were some of the ways that this act helped
3 answers
121 views
On slide 12 of 14, watch the video about the Space Race. What things do we use daily that can be traced directly to this race to
3 answers
200 views
Betty Friedan, a feminist writer, wrote a book called “The Feminine Mystique”. What was its overall message?
1 answer
145 views
20. Match the Supreme Court decision to its meaning to all citizens.
Supreme Court Decision: 1. Tinker v. DesMonies 2. Miranda v.
1 answer
126 views
Read on slide 7 of 9 about the Cuyahoga River disaster. What was the public reaction to that?
1 answer
89 views
Richard Nixon became president in 1960. Match up the events of his presidency with their descriptions.
Event: 1. NASA 2. OSHA 3.
1 answer
82 views
Which ONE of these statements about the events surrounding "Watergate" is true?
a) Nixon lied about having knowledge of the
1 answer
150 views
The primary reason that the US decided to enter into the conflict in Vietnam can be explained by the “domino theory.” What
3 answers
179 views
In a move that greatly increased presidential power, Congress passed the Gulf of Tonkin Resolution. What did this Act allow the
1 answer
96 views
The Vietnam War was the first war that was televised nightly, allowing the world to see the action almost immediately. Not
1 answer
102 views
Young people all over America saw their friends drafted and sent to die in Vietnam. Protests and rallies were televised, and
1 answer
168 views
What legislation was passed in 1973 that was designed to curb presidential power to commit troops to foreign soil? (replace the
1 answer
138 views
“If we 18-year-olds can die for our country, we should be able to vote against the old men who send us to die.” A statement
1 answer
154 views
Read the following statements and tell if they happened during the presidency of Ford or Carter.
a) Pardoned Nixon b) Improved
3 answers
111 views
Read about Earth Day and the environmental disasters on slides 1-4 of 9. In your opinion, was it foolish to start a movement in
3 answers
116 views
The Environmental Protection Agency was established in 1970. (slide 2) Place an X in front of the ONE statement that explains
1 answer
127 views
The “counterculture” movement of the 70s challenged traditional social patterns. List at least 5 ways that hippies
1 answer
121 views
Watch this video about OPEC. Explain what happened in 1973 in the U.S. when those countries placed an embargo on oil production.
1 answer
224 views
Read about the extremely talented Shirley Chisholm at this link. and at the link at the bottom of slide 2 of 9.
36. List at least
3 answers
121 views
Read about the status of the Equal Rights Amendment at this link. Why do you think the amendment has faced such opposition, even
1 answer
82 views
The 1970s were a time of protest and activism, for Latinos and American Indians alike. As you read about them on slides 4
1 answer
81 views
In a paragraph of 3–5 sentences, explain Lyndon B. Johnson’s “War on Poverty,” and describe key programs in the plan,
3 answers
302 views
Use Snell’s law to determine the index of refraction of a sample of glass if a light ray that strikes the glass from air at an
5 answers
579 views
Which of the following is NOT a challenge of renewable energy?
a) low impact on landscapes b) economics c) geography d)
1 answer
68 views
The best region to generate solar power in the United States is ____.
a) forests of the Pacific Northwest b) farmlands of Iowa c)
1 answer
88 views
Which type of light bulb is the most efficient?
a) LED b) CFL c) Incandescent
1 answer
88 views
Distributional _______ are small amounts of money paid by all utility customers to help finance research and development of
1 answer
76 views
Please share your personal opinion about renewable energy sources. Be sure to include which one you feel is most worth investing
3 answers
85 views
What is one way that light waves differ from sound waves?(1 point)
Responses a) Light waves do not require a medium to propagate.
4 answers
177 views
What is one way that light waves differ from sound waves?(1 point)
Which answer is the best option? a) Light waves do not require
4 answers
387 views
Which best explains why high frequency electromagnetic waves are more likely to cause harm to living things?(1 point)
Which
1 answer
216 views
Which phrase correctly defines the amplitude of a wave?(1 point)
Which answer is the best? a) the vertical distance from the
3 answers
436 views
As waves move through water, the water at any point rises and falls. At a given moment, two points along the wave’s line of
4 answers
232 views
A sound wave passes through regions of the ocean with varying density. How do the varying wavelengths correspond to the density
1 answer
283 views
The speed of a wave is 2 m/8, and its wavelength 0.4 meters. What is the period of the wave?(1 point)
Which of the following is
1 answer
92 views
The lowest frequency that we can hear is about 20 hertz. If the speed of sound in air is 340 meters/second, what is the
3 answers
395 views
A stationary source produces a sound wave at a frequency of 100 Hz. The wave travels at 1125 feet per second. A car is moving
3 answers
203 views
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