# Posts by Emma

Total # Posts: 1,792

Physics Q
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during this time.

Physics Help!
An air bubble has a volume of 1.51 cm3 when it is released by a submarine 102 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume that the temperature of the air in the bubble remains constant during ascent.

PHYSICS!
0.115 kg of water at 81.0o C is poured into an insulated cup containing 0.220 kg of ice initally at 0o. Calculate the mass of liquid when the system reaches thermal equilibrium.

S.S. Check answers
you got them all right :) i got a 100%

Physics
If a sonar echo takes 2.20 seconds to return from a whale, how faw away is the whale?

Math
Actually it's 12 because you have to divde 24 by 2 and it leaves you with 12.

Math
8 / 10 = x / 15 times 15 on each side =24

Literature
Please help me understand this, thanks. The way a topic is handled is called its treatment. Review the chart you completed as you read the speech. Then describe Obama's treatment of his family in the speech. By speech, it's referring to Out of Many, One.

Math Vocab
I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.

Algebra
Oh ok I get it. Is there any work to show to get this answer?

Algebra
May you please help me understand how to do this? Thanks Give the slope of a line perpendicular to the given line. 1. y=3x+5

Thermal Physics, Kinetic Theory of Gases
Your velocity is incorrect, it is too slow

Language arts
Check my answer please Which of the following would not be considered an asset? A) credit card debt B) a good credit rating C) an education Answer: A

calculus
lim x^(3)+x x->2 Suppose x^(2)+1 is greater than equal to f(x) is greater than equal to 4x-3 for all x. Compute lim f(x) x->2

math
(-x-3)+(4x-7) =3x -10

Math
To rewrte it in y=mx+b form, you do this : 3y=6x+3 divide both sides by 3 so it would be y= 2x+1

math
(14x-5)+(6x-4) = 14x-5+6x-4 Combine all like-terms =20x-9 Thus, 20x-9 is your final answer. Hope I helped!

English
Oh okay, thanks I get it now.

English
The full verb is "was propelled" Why wouldn't it be passive?

English
Write the complete verb in each sentence. Label it active or passive. 1. It was propelled by six paddles on each side. Each side was propelled by six paddles. Passive?

Math
I don't really know

Algebra
May I ask how you got 5x-5=0 ?

Algebra
I don't get how you do this please help, thanks! Write the equation in the form ax+b=0. Then write the related function y=ax+b. 5x+2=7

math
Write a formula for this sequence: 50, 83, 116, 149,... I just don't know how to find it..

English
I have to come up a reason for my claim help please? Thanks! My claim: technology is harmful to children and teens.

Algebra
Can you please help me understand this? Thanks Find the value of y so that the passing line through the two points has the given slope. 1. (2,y) (3,3) ;m=2

6th grade Math
Change 85% to a decimal which is 0.85 and then times it by 20: 0.85*20 = ? You times them together and you'll get your answer. Hope I helped!

English
Change the verb into the tense indicated. I am here. (past perfect)

Physics
A 2.7 kg bucket of water is raised upwards by a rope. If the bucket has an acceleration of 3.4 m/s/s, find the force exerted by the rope on the bucket.

Physics
A car with a mass of 1797 kg is moving to the right at a constant velocity of 2.50 m/s. What is the net force acting on the car?

Physics
On an aircraft carrier, a jet can be catapulted from 0 to 155 mi/h in 2.00 s. If the average force exerted by the catapult is 5.53×106 N what is the mass of the jet?__________ kg

Physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50 x 105 kg, its speed is 27.0 m/s, and the net braking force is 4.73 x 105 N. (a) What is its speed 7.50 s later? (b) How far has it traveled in this time? (a) Its speed 7.50 s ...

History
What country are these cities in? Bellman, Port-au- Prince , Tegucigalpa and Managua?

Algebra
How can you tell by looking at a table if its quadratic, linear or exponential? For ex. x: -2, -1, 0, 1, 2 y: 6, 1, 0, 1, 6

English
Complete the sentence by writing the correct form of the verb shown in parenthesis. "It has _______," Martin said matter-of-factly. (burst)

Physics
In a circus performance, a monkey on a sled is given an initial speed of 3.2 m/s up a 31° incline. The combined mass of the monkey and the sled is 20.7 kg, and the coefficient of kinetic friction between the sled and the incline is 0.20. How far up the incline does the ...

Landforms-history
What is a large, raised that rises above the surrounding ground?

science
how does a change in wavelength affect the speed of a photon.

science
how many days would it take to fly to Jupiter (from Earth) in a space shuttle at 45,000 miles per hour? The minimum distance between the Earth and Jupiter is 365 million miles.

science
how many days would it take to drive from the earth to the moon at a speed of 75 miles per hour? the average distance from the earth to the moon is 380,000km. 1 km=0.62 miles

History
True or False: 1. A region near the ocean will be cooler than a region inland of the same latitude. 2. The tundra is an area of cold climate with low-lying vegetation. (true?) 3. The climate of highland regions gets colder and colder as you go higher. (false?) 4. Temperate ...

3rd Grade Math
there are 16 girls

Math
How can you tell by looking at a graph if it's a linear, quadratic or exponential function?

English
I am writing an evidence paragraph telling what people do to their bodies in order to look good. Make-up, braces, surgery , etc are examples but they are not really "technology". This is what I have so far: Today we have upgraded technology ... Is there another word ...

English
Underline the verb phrase and circle the main verb. Mandy is reading about different languages. Verb Phrase: is reading Main Verb: Reading?

Algebra
Substitute the numbers in x and solve. 1) 4/5^x -2,-1,0,1,2 2) 2^x -2,-1,0,1,2

History
The areas between the Tropics of Capricorn and Cancer are (A. High or B. Low) latitudes.

Math
Can you please give me an example of a function notation? Thanks.

Math
Anyone know how to do this? :/

Math
find the difference quotient when given f(x)= -2x^2+4x-1

English
Can you please help me rephrase this so there won't be any "I, Me, My, Us, We, Our, Your or You" in it? Thanks Have you ever given up something you love?

biochemistry
The pH of 0.02M solution of a weak acid was measured at 7.6. What is the [OH-] in this solution? B) The Ka for benzoic acid is 6.4 x 10-5M. 150 ml of 0.1 M NaOH is added to 200 ml of 0.1 M benzoic acid, and water is added to give a final volume of 1 L. What is the pH of the ...

English
Would a soldier sacrifice their life to serve the country?

English
Can you please give me three examples of friendship and sacrifice? Thanks.

Common ways
What is a common way we may need help?

Chemistry
A pool is 4.57 m long, 3.04 m wide, and 1.83 m deep. If the pool is completely filled with water, what will the weight of the pool be in pounds if 1 Kg=2.2 pounds.

algebra
solve for h: v=lwh V=lwh 1. divide lw on each side 2. VLW= H Am I right?

English
Ok, I think I got it. Also, does sacrifice mean "given up"?

English
I am writing two paragraphs about two themes but I can't think of two conclusion sentences. The themes are friendship and sacrifice. Help please? Thanks

math
An example of: Ratio of a to b

Math
Can you please give me an example of a solution step? Thanks.

math
same connections academy 8th grade!!!

Social Studies
adapt to there environment

5th grade religion
i don't know how about you think about it im not your teacher

ENGLISH
i was right on the first one too.

ENGLISH
ok thank you, and there are seven.

ENGLISH
i gave you answers to check ~ = my answer

ENGLISH
3. What is the rhyme scheme of the following Anne Bradstreet poem? To Her Father with Some Verses Most truly honored, and as truly dear, If worth in me or ought I do appear, Who can of right better demand the same Than may your worthy self from whom it came? The principal ...

AP Language & composition
1) what type of source it is, such as a book, web article, newspaper, etc. 2)the source’s entry on the Works Cited page. would that make sense for an answer?

AP Language & composition
im confused then..

AP Language & composition
the title of the source?

AP Language & composition
What two pieces of information are necessary each time you cite a source in the text of your paper?

geometry
Campsite F And G Are On Opposite Sides Of The Lake.A Survey Crew Made Measurements Shown On The Diagram .What Is The Distance Between The Two Campsites?

RE: English
2. when deciding whether to read a newspaper article, which technique is most useful? I think it's jigsaw?

English
Is it jigsaw ?

English
1. Reading text to obtain an overview of major ideas and disregarding 2. when deciding whether to read a newspaper article, which technique is most useful? A. jigsaw B. flowchart C. skim D. scan I think 1. C and 2. is B? What is a jigsaw and flowchat ?

business
what is the formula used and the values used for each variable to calculate the monthly payment of \$804.45 and the amount of the loan is \$50000.

English
The pronoun in this first sentence is "they" and the adverb in that first sentence is fast? The adverb in the second sentence is be?

English
Adrian saw his friend Bob walking fast down the hall. What is the adverb and pronoun in this sentence? The adverb in this sentence: Soon the computer store will be closed.

English
Direct or indirect quote? "Want to jog a lap with me, Dad?" asked David. "Sure, but let's take it slow," said Dad. Is it direct quote?

English
What does conscious will mean?

English
Katherine said, "Are you coming home today?" The "are" isn't suppose to be capitalized right?

English
I looked at the growing dark clouds and I realized a massive storm was approaching. What poetic device is being used? I think it's personification.

English
I looked at the growing dark clouds and I realized a massive storm was approaching. What poetic device is being used? I think it's personification.

English
Then if there are no compound verbs in that sentence then which choice do you think it would "make sense" to choose? A. lacrosse, looks B. look, is C. lacrosse, sport D. looks difficult

English
So what you mean is that there are no compound words in this sentence? And I should choose Lacrosse and looks?

English
Look for the compound verbs in the sentence below; Lacrosse looks like an easy sport to play but it is really quite difficult. The two compound verbs I found were "looks" and "is".

English
Does dismal mean fake?

English
Ok thanks!

English
What are some antonyms for: Synthetic thrifty What are some synonyms for: synthetic thrifty somber

English
Thanks!!

English
What is an "inside address" for a letter?

English
Is there a choice that is close to an antonym for ignorant? And also is ignorant and uneducated synonyms then?

English
Antonyms of: Careful: False: ignorant: A: uneducated B: reckless C: intelligent D: untrue E: Genuine I think careful is B false: E ignorant: A

English
So you mean that it would be better to choose D?

English
Also, in the directions, they referenced that- Electronics sources are information accessed by a computer. So would it still be D?

English
The internet is a/an source. A. print B. electronic C. non-print D. media I can't choose between choice B and choice D.

English
A book or magazine in its original form is a/an ________ source. A. media B. print C. electronic D. oral I think it's B.

Math
the radius of a cylindrical tank is enlarged so that its radius is twice larger than before. How much largerthe volume of the enlarged tank is?

English
Also I have another one that I did not get: The current was not strong enough to operate all of the appliances in the house. I put down definition D for that.