Tuesday
April 21, 2015

Posts by Emma


Total # Posts: 1,281

calculus
A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground. Type your answer in the ...
April 20, 2015

History
@Ms.Sue I fixed it
April 20, 2015

History
1. How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? A)Both lived in Boston and were Underground Railroad conductors. B)Both printed newspapers with antislavery messages in the North. C)Both used their houses as Underground Railroad stations and risked their ...
April 20, 2015

History
@Ms.Sue please help
April 20, 2015

History
How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? Both lived in Boston and were Underground Railroad conductors. Both printed newspapers with antislavery messages in the North. Both used their houses as Underground Railroad stations and risked their lives for ...
April 20, 2015

math
Gabriel walked 100m around the perimeter playground.How long and how wide could the play ground be? give three different answers.
April 19, 2015

Chemistry
The heat of fusion of a metal is 5.53 J/g at its freezing (melting) point of 559◦F. How much of this solid metal (already at 559◦F) can be melted if 3382 J of energy are available? Answer in units of g. I don't know how to set up the problem
April 14, 2015

calculus
A 15-ft ladder rests against a vertical wall. If the top of the ladder slides down the wall at a rate of 0.33 ft/sec, how fast, in ft/sec, is the bottom of the ladder sliding away from the wall, at the instant when the bottom of the ladder is 9 ft from the wall? Answer with 2 ...
April 13, 2015

calculus
The area A = πr2 of a circular water ripple changes with the radius. At what rate does the area change with respect to the radius when r = 4ft?
April 13, 2015

calculus
The height of a cylinder with a fixed radius of 4 cm is increasing at the rate of 2 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 14cm.
April 13, 2015

English
A IS THE ANSWER
April 7, 2015

physics
60 cubic feet of air at 30 PSIG and 50 degrees F is compressed to 80 PSIG and 110 degrees F. What is the final volume?
April 2, 2015

physics
A hydraulic cylinder has to overcome a force of 12,600 pounds on the extend stroke and 9,375 pounds on the return stroke. The maximum system pressure available is 2200 PSIG. What is the smallest diameter cylinder required to overcome the load and what is the maximum diameter ...
April 1, 2015

fluids
An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?
April 1, 2015

fluids
A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?
April 1, 2015

fluids
What are the three benefits of a fluid system as the prime mover in a system? Explain each benefit.
April 1, 2015

physics
A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?
April 1, 2015

physics
. An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?
April 1, 2015

fluids
. A nut is frozen on a shaft and it will take a minimum 190 foot pounds to break it free. How long a cheater (extension) will a 120 pound person need to put on to an adjustable wrench with a 6inch handle?
March 31, 2015

fluids
60 cubic feet of air at 30 PSIG and 50 degrees F is compressed to 80 PSIG and 110 degrees F. What is the final volume?
March 31, 2015

fluids
A man unloads a truck that has 25 15 pound cinder blocks to a pallet 12 feet away. A. How much work has he done?B. How much power if he finished in 8 minutes?C. How much HP was exerted?
March 31, 2015

history
@Ms.Sue Please check
March 25, 2015

history
which of the following was an effect of the assembly line? A) it made workers want to return farms B) it made clothing more expensive to produce C) it increased demands for worker compensation D) it drove down the cost of clothing production Who introduced the idea of ...
March 25, 2015

History
@Ms.Sue please check
March 24, 2015

History
1. How did new England's textile industry affect both children and women? a) It allowed them to earn a living wage until the age of 25. b) It gave them opportunities not available on family farms. c) It permitted them to complete their schooling. d) It provided long-term ...
March 24, 2015

Physics
Mass m1 = 0.5 kg moves with constant velocity v1i = 2.5 m/s along the x-axis and collides with mass m2 = 2.6 kg, which moves with velocity v2i = 3.1 m/s, as sketched below(completely vertical). After the collision, m1 and m2 stick together. a.) Find the angle, θ, between ...
March 24, 2015

L.A
It is C. I just took a test for an online school I attend. It gave me the answers after I submitted the test. It is C.
March 24, 2015

chemistry
what is the strongest intermolecular force in nitrogen trifluoride
March 20, 2015

phy
Which of the following is NOT true? evaporation occurs at any temperature of a liquid boiling takes place only at the surface of the liquid evaporation occurs only at the surface of a liquid boiling of a liquid takes place at a definite temperature and pressure
March 18, 2015

phy
Calculate the change in internal energy of 2kg of water at 90 degree celcius when it is changed to $3.30m^{3}$ of steam at $100 ^{o}$C. The whole process occurs at atmospheric pressure. The latent heat of vaporization of water is $2.26\times10^{6}$ J/kg.
March 18, 2015

Algebra 2 (DIVIDEPOLYNOMIALS)
How do you divide this polynomial using long division? (6x^3-17x^2-104x-60) divide by (2x+5)
March 18, 2015

Physics
A mover pushes a 60 lb box 30 ft along a level floor at constant speed with a force directed 45 degrees below the horizontal. If the coefficient of kinetic friction is 0.20, how much work does the mover do on the box? ...Is this one of those trick questions where the work is 0?
March 11, 2015

Business Math
Ned’s Sheds purchases building materials from Timbertown Lumber for $3700 with terms of 4/10, 2/15, n/30. The invoice is dated October 17. a) List the time periods, as well as the payment and percent discount for each period. b) On November 1, a partial payment of $2000 ...
March 8, 2015

Math
What is the combined height of 3 nickels, 2 nickles, and 1 nickle
February 25, 2015

Math
How many times larger is the area of a square (Length of Sides = A) than the area of an equilateral triangle (Length of Sides = 0.5A)?
February 21, 2015

physics
If a person weighs 700N on Earth, what force due to gravity would they exert on a 1500kg car they are standing 1.5m from? Assume the distance is between their centres of mass. F=Gm1xm2/r^2?
February 20, 2015

Ap calc
Use the method of cylindrical shells to find the volume V of the solid obtained by rotating the region bounded by the given curves about the x-axis. x + y = 3, x = 4 − (y − 1)^2
February 19, 2015

AP calc
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. y = 8x − x^2, y = 12; about x = 2
February 19, 2015

AP calc
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. y = 13 sqr.(x) y = 0, x = 1; about x = −3
February 19, 2015

Science
1.Infrared radiation has wavelengths ranging from about 800 nm to 1 mm. What is the frequency of radiation of wavelength 970 nm? Answer in units of s−1 . 2.Microwaves, such as those used for radar and to heat food in a microwave oven, have wavelengths greater than about ...
February 12, 2015

math
Use the line graph to solve. What was the difference in water levels between Week 2 and Week 4? A. 10 m B. 1 m C. 0.10 m D. 0.01 m the water kecvers is 5.3 and 5.4
February 6, 2015

Physics
In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. Suppose a small boat is at the crest of this wave, 1.8m above the equilibrium position.What will be the vertical position of the boat 3.0s later?
January 22, 2015

economics
Which of the following is most likely to be purchased in the factor market? You will choose two answers for this question. Shampoo and dog food Cement and copper wire Opera tickets and sushi Automobiles and deodorant Dirt and timber I know that dirt and timber is one of the ...
December 4, 2014

math
write the following square root in the form a root b . where a and b are integers and b has the least value possiable. 3 root 7?
November 28, 2014

math
find a value for x so that 28/12 = -7/x x=?
November 25, 2014

math
the number of professors in a collage is P and the number of students is S and there are 15 times as many students as professors. write the answer as an algerbra equation.
November 25, 2014

Math (trigonometry)
thank you
November 23, 2014

Math (trigonometry)
Hi, I need help with these problems, I'm not sure where to start. The book's examples are different. Thanks in advance!! 1.) To find the distance AB across a river, a distance BC of 472m is laid off on one side of the river. It is found that B=108.1 degrees and C= 17.9...
November 23, 2014

Maths
I did miss a bit. The 10 additional balls were all red.
November 22, 2014

Maths
In a bag there are a number of red and blue balls. The ratio of red to blue balls is 3:7. I add 10 balls and the ratio goes to 6:7 red to blue balls. How many blue balls are there? 3n + 7n = 10n (3n+10) + 7n = 10n + 10 6n + 7n = 10n + 10 13n = 10n + 10 3n = 10 N = 3.333 7n = ...
November 22, 2014

Chemistry
typo: *not be correct
November 16, 2014

Chemistry
Thank you DrBob222, could you possibly elaborate why C or D could be correct? (I initially thought C, but I'm not so sure now.)
November 16, 2014

Chemistry
Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG&...
November 16, 2014

math
sales tax is 8.2 percent find the sales taxes on a purchase of 273.00.
November 14, 2014

MATH!!!
Aparent dies and leaves half of his estate to his four children. THE FIRST ONE GETS 1/2 OF THE ESTte the second gets 1/8 and the thrid one gets 1/4 . how much did the fourth on get?
November 14, 2014

MATH!!!
A function machince accepts inputs as ordered pairs. The componeys of the ordered pairs are natural numbers and the first componet is the length of the rectangle and the second componet is the width. the given machince comptes the perimeter ( the distance around the rectangle...
November 14, 2014

MATH
A function machine accepts inputs as ordered pairs. the componets of the ordered pairs are natural numbers and the first component is the length of rectangle and the second comonet is the width . the given machince comptes the perimiter . find the out ut for (3,7) (7,3) (5,7) ...
November 14, 2014

math
A function machine accepts inputs as ordered pairs. The Components of the order pairs are natural numbers and the first components is the length of the rectangle and the second componet is the width . The given machine computs the perimeter. Find the out put for (1,3) ...
November 13, 2014

math
F (X)= X-5
November 13, 2014

Math
Write an expression for the cost c if a printer charges $2.05 for binding plus 5 cents fee p pages for copies of a community group. C=
November 13, 2014

algebra
If matt has six times as many sitckers as tom. how many stickers dose he have to give tom so they can have 70 stickers each?
November 13, 2014

Math
Determine the next term of sequence 3,11,19,27,35 is my line of thinking correct 43?
November 10, 2014

language / reading
I'm doing a précis and I want to get a good grade could someone check this. C.s. Lewis's The Last Battle takes place in a forest it is a children's fantasy novel. The conflict is that a false ask an roams Narnia. The main characters at e Jill and Eustace the...
October 27, 2014

language / reading
I can't figure out what the climax of The Last Battle is? Is it this,the climax of The Last Battle is when Jill and Eustace go to the real Narnia.
October 27, 2014

math
I tried it and I think the answer is 82% am I right
October 21, 2014

math
Can't figure this one out. The oceans' tide levels vary based on the phases of the moon. Find the percent decrease in tide levels when high tide is 4.25 ft and low tide is 0.75 ft above sea level.
October 21, 2014

math
It is a different equation I have it now.
October 21, 2014

math
I don't get how to put it in the the equation Interest=percent×rate×time This is the question The banded ribbon worm is a carnivorous aquatic worm. It measures about 2.5 ft. When expanded. Find the percent increase between the contracted and expanded length of ...
October 21, 2014

History
Will do! It seems more accurate that way.Thanks again
October 9, 2014

History
Okay thank you for your help, I really appreciate it!
October 9, 2014

History
The question does not tell me anything else, but I do know that there are 6 features in a civilization. -GOVERNMENT -RELIGION -ARCHITECTURE -WRITING -SOCIAL STRUCTURE/CLASSES -CITITES
October 9, 2014

History
I'm not exactly sure, but I think it has something to do with civilizations of Ancient Egypt.
October 9, 2014

History
Explain the six features of Ancient Egypt
October 9, 2014

1st grade
Thank you
October 9, 2014

1st grade
This is for my cousin Kara planted seeds in her garden.that summer, many tomatoes grew. cause: Effect:
October 9, 2014

math
29
October 9, 2014

math
Explain Sean biked 43 miles on Monday, 23 miles on Tuesday, and 62 miles on Wednesday. How many more miles did he bike on Wednesday than on Monday? Draw a picture and write an equation to solve. Then solve
October 9, 2014

science
The total energy of motion in the molecules is called POTENTIAL ENERGY. TEMPERATURE is the average amount of energy of motion in the molecules of a substance. A THERMOMETER is a thin glass tube with a bulb on one end that contains a liquid,usually mercury or colored alcohol. ...
October 8, 2014

Science
I'm pretty sure it is c
October 8, 2014

Science
Yes
October 8, 2014

Science
The mRNA brings the message that was transcribed by the DNA to the ribosome, while the tRNA brings the anticodon to translate the message, along with the amino acid which bonds to form a polypeptide chain. The chain is further developed into a functional protein .
October 8, 2014

Science
the biochemical basis of heredity consisting of codons in DNA and RNA that determine the specific amino acid sequence in proteins and appear to be uniform for nearly all known forms of life. I'm not sure what the answer is but this is more information.
October 8, 2014

Science
The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. Hope this helps.
October 8, 2014

science
I only want to know if I got them right or witch ones I got wrong.
October 8, 2014

science
Potential energy Temperature Thermometer Heat Conduction And convection
October 8, 2014

science
Ms sue HELP ME PLEASE
October 8, 2014

science
Help me.sue
October 8, 2014

science
The total energy of motion in the molecules of a substance is called? ?is the average amount of energy of motion in the molecules of a substance. A ? Is a thin glass tube with a bulb on one end that contains a liquid usually mercury or a colored alcohol. The energy transferred...
October 8, 2014

Science
How do you define a controlled experiment?
October 7, 2014

Math
0.28 t 0.62 = 0.90
October 7, 2014

Math
What is the sum of decimals? 0.28 + 0.62 = Write to explain how you found your answer.
October 7, 2014

Math Multiplication
What are the factor pairs of 642? Please dont ask what I dont understand because I cant find the answer
October 1, 2014

math
How do you study for a math quiz?
September 24, 2014

math
You would need 4 pizzas
September 24, 2014

language
I will now definitely read it. :) thank u
September 24, 2014

language
Would you mind if you gave me a brief summary?
September 24, 2014

language
I have to do a précis on a book that was published in the 1940-1969 what book would you recommend.
September 24, 2014

social studies
Thanks I found it right way.
September 24, 2014

social studies
What did the Egyptians believe about the region to the west of the Nile.
September 24, 2014

social studies
Thank you it was very helpful
September 24, 2014

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