Tuesday
October 21, 2014

Posts by sarah


Total # Posts: 4,200

physics
Suppose the water at the top of Niagara Falls has a horizontal speed of 2.36 m/s just before it cascades over the edge of the falls. At what vertical distance below the edge does the velocity vector of the water point downward at a 38.8 ° angle below the horizontal?
September 15, 2012

math
x^2 < x+12 in interval notation. Im not sure how to work with the x^2
September 13, 2012

honors physics
A car is traveling on an interstate highway: a) Can the car have a negative velocity and a positive acceleration at the same time? Explain. b) Can the car's velocity change signs while it is traveling with constant acceleration? Explain.
September 10, 2012

math
in a class of 18 students at school there are half as many girls as boys. How many girls are in the class? how many boys?
September 10, 2012

Anatomy
How do you put any of these prefixes in 5 sentence? thank you -bi -cardio -costo -equi -hemi -cyto -gastro -bucca -glossa -colo -gingiva -lympho -naso -tonsillo -tracheo -pulmo -neuro -oto -cysto -hyster -lapar -nephro -mono -non -para -osteo -para -quadri -poly -meno -mega -...
September 10, 2012

math
pencils come in packs of 20 for 2.79 if 18 8th graders and 19 7th graders need 4 pencils how much would it cost?
September 10, 2012

math
Rays AB and BC are perpendicular. Point D lies in the interior of angle ABC. If Angle ABD = 4r-7 and angle DCB = 8r+1, find angles ABC and DCB.
September 8, 2012

PHYSICS
A circular loop of flexible iron wire has an initial circumference of 168cm , but its circumference is decreasing at a constant rate of 15.0cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 1.00T , which is oriented ...
September 8, 2012

Theory to Practice
the answer is B hopping and skipping. :)
September 8, 2012

Socisl studies
How did moutain passes help settlers who were traveling to california?
September 6, 2012

math
Rationalize the denominator: y divided by (square root of 6 + square root of y)
September 6, 2012

physics
3
September 4, 2012

7th Grade Science
Hey! i got the same question too! but i needed to make a bubble map to have a comparison of both of them ^-^
September 4, 2012

social studies
what countries that wanted to populate the New World.
September 3, 2012

math
20+53=73
September 3, 2012

math
72 feet is 3/4 of the total (1/4=24}
September 3, 2012

statistics
A source in the Internal Revenue Service has stated that historically 90% of federal tax returns filed are free of arithmetic errors. A random sample of 25 returns are selected and checked carefully for arithmetic errors. Assuming independence, find the probability that a. all...
August 30, 2012

Math
Write using statement using absolute value notation a) The distance between y and -2 is greater than or equal to 4 b) Y is more than d units from C.
August 29, 2012

Physics
Let 580 nm light be incident normally on a diffraction grating for which d=3.00D=1050nm. a) how many order (principal maxima) are present ? b) if the grating is 1.80 cm wide, what is the full angular width of each principal maximum? I got the first part I just plugged into ...
August 29, 2012

Place value whole numbers
what is the sum of my digits is 13?
August 28, 2012

chemistry
A nickel is found to have a mass of 5.06 grams. Using unit analysis, show what the mass of this nickel is in ounces.
August 28, 2012

trig
prove that there exists no smallest possitive real number dose there exist a smallest positive rational number given a real number x, does there exist a smallest real y>x?
August 28, 2012

chemistry
How do you draw an orbital diagram for an element, for example, the element iron.
August 26, 2012

Physiology
Palpation of the left axillary region demonstrated palpable lymph nodes extending into the ipsilateral anterior thorax. ( Does ipsilateral refer to the axillary ( armpit), meaning the anterior thorax is on the same side as the axillary (left)? ( Must be simplified into simpler...
August 25, 2012

Physiology
The patient reports numbness and tingling in the left lumber area and pain in the contralateral femoral region. ( not sure how to rewrite statement into simpler terms)
August 25, 2012

PHYSICS
Two bulbs are connected in parallel across a source of emf EMF = 10.0V with a negligible internal resistance. One bulb has a resistance of 3.0 Omega , and the other is 2.5 Omega . A resistor R is connected in the circuit in series with the two bulbs. What is the current ...
August 23, 2012

PHYSICS
How do i solve this part: What is the current through each individual bulb? Let I1 be the current through the bulb of resistance 3.0 Omega and I2 the current through the bulb of resistance 2.5 Omega?
August 23, 2012

PHYSICS
Two bulbs are connected in parallel across a source of emf EMF = 10.0V with a negligible internal resistance. One bulb has a resistance of 3.0 Omega , and the other is 2.5 Omega . A resistor R is connected in the circuit in series with the two bulbs. What value of R should be ...
August 23, 2012

adv english
WHAT / HOW DO I ANNOTATE ????
August 22, 2012

algebra
Create an equation for cell phone plan:$30 for the first 500 minutes plus $.20 for each additional minute.
August 21, 2012

AlgebraII
A train goes from boston to new york averaging 40 km per hour and returns averaging 60 km per hour. What is the average speed(it is not 50 km per hour) for the round trip?
August 20, 2012

math
consider the following statement: if a circle with its center at the origin has a chord with slope m, the equation of the right bisector of the chord is y=mx. Is this statement true or false? explain
August 18, 2012

Math
FIve players played a scored board game. If the average ( arithmetic mean) of the scores of the five players was 21, and if each person had a positive integer score, what is the greatest score any one player could have obtained? a) 33 b) 50 c) 75 d) 94 e) 101 ( please explain ...
August 15, 2012

Math
Which of the following CANNOT be the average ( arithmetic mean) of four positive even integers? a) 1 b) 2 c) 6 d) 9 e) 17 ( please explain or show work. It will help me understand it better! Thanks)
August 15, 2012

health
Ashworth**^
August 11, 2012

Math
Point E is on side AB of rectangle ABCD. If the area of ABCD is 48, what is the area of triangle CDE?
August 9, 2012

Chemistry
It doesn't give me the Keq. The information in the question is the only information I am given.
August 9, 2012

Chemistry
After 4.00 mol of C2H4(g) and 2.50 mol of Br2 (g) are placed in a sealed 1.0L container, the reaction reaches equilibrium and is written following: C2H4(g) + Br2(g) -> C2H4Br2(g) ... Calculate the equilibrium concentrations of all three substances.
August 9, 2012

math
If the ratio of the area of equilateral triangle A to the area of equilateral triangle B is 100 to 25, then what is the ratio of their altitudes?
August 8, 2012

math
what is math
August 6, 2012

business Communication
1. should be D consider your work styles and other commitment
July 29, 2012

business Communication
1, Which of the following is NOT something a group should do when it plans a collaborative writing project? A. Divide the work ahead of time according to how the leader thinks it will best be done B. Make your analysis of the problem, the audience, and your purposes explicit ...
July 29, 2012

biochemistry
You have a 100 mMoles of A in the 10 ml reaction mixture which contains buffer and enzyme. The reaction is allowed to reach equilibrium at 25 o C and you measure the concentration of B as 10 mM. What is the delta Go' for the reaction in KJ.
July 25, 2012

Math
Ohh BTW this is due in tomorrow
July 24, 2012

Math
I don't understand this it says If the average of 6 numbers was 58, what could the 6 numbers be? That would take forever to work out. What is the easiest way to work that out
July 24, 2012

Math
Circle X has an area of 36pie, and a circle Y has an area of 18pie. What is the ratio of the circumference of X to the circumference of Y.
July 23, 2012

Math
If the length and the width of a rectangle are doubled, its area is increased by what percent?
July 23, 2012

Math
A piece of paper is cut into 25 equal parts that are similar in shape to the original. what is the perimeter of one of the small pieces divided by the perimeter of the original piece of paper?
July 23, 2012

Math
At a local pound, 40% of the animals sheltered are cats and 15% of the cats are black. If there are 30 black cats at the pound, how many animals are sheltered there?
July 23, 2012

earth
You are standing on a planet with a radius 10,000kilometers. It's mass is 10^26 kg. What is the planet's escape velocity from where your standing? Ignore rotation of the planet.
July 13, 2012

Economics
In which of the following situations would someone have to pay a gift tax? A. A relative dies and leaves you $13,000 in the will. B. Your cousin gives you a car worth $1,700. C. Your grandmother gives you $13,000 toward college. D. Your cousin gets a job paying $32,000 a year...
July 6, 2012

Math
If a dog can run 10ft in1/5 of a second how many feet can it run in 20 seconds
June 28, 2012

dressmaking
IN making a two-piece flared skirt,the amount of flare is limited by the A) length of the skirt B) type of fabric C) size of the figure D) tendency to sag I cant decide between A,C or D because it does mention that if more flare is wanted,allow greater length and width,but it ...
June 25, 2012

art101
what is neo classicism?
June 22, 2012

Physics
A bomb is dropped from a plane flying at 4000 meters. The plane is flying at 80 m/s. How far, in a horizontal direction, did the bomb hit the ground?
June 22, 2012

math
how do you solve 2(x-3)=14-x over 5 ?
June 20, 2012

Geometry
If the ladder extends to a length of 158 inches, what is the height of the house rounded to the nearest hundredth of an inch? Type the numeric answer only in the box below.
June 17, 2012

PHY - C of M
A 1100-kg cannon shoots a 31-kg shell at an angle of 25¡ above the horizontal and a speed of 520 m/s. What is the recoil velocity of the cannon? (Take the direction the cannon is firing to be the positive direction. Indicate the direction with the sign of your answer.)
June 16, 2012

Calculus
it says determine the value of k so that u and v ARE perpendicular .... if it was parallel, i don't think it would ask me to find k....... unless it's a trick question ...
June 15, 2012

Calculus
Determine the value of k, so that u = [-3,7] and v = [16,k] are perpendicular.
June 15, 2012

Calculus
Differentiate each function a) y = Cos³ x b) y = Sin(x³) c) y = Sin²xCos3x
June 15, 2012

Calculus
Evaluate, rounding to two decimal places, if necessary a) ln 5 b) ln e² c) (ln e)²
June 15, 2012

Calculus
Determine the equation of the tangent line to the curve y = 2x²-1 at the point where x = -2
June 15, 2012

Calculus
Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) thank you in advance :)
June 15, 2012

physics
a 1.0kg ball is thrown upward from 1.0m above the ground with a speed of 10m/s reaches a height of 4.5 m. what is the efficiency of the energy transformation?
June 13, 2012

DeskToping
The ______ finger is used to key an ampersand. A. A B. D C. J D. Sem I got D.
June 13, 2012

statistics
Suppose a box has eight differently colored tennis balls in it. The colors are green, blue, red, purple, orange, black, and white. if I will randomly pick out three balls (without replacement), then what is the probability that the balls chosen will be green, yellow, and red (...
June 12, 2012

Desktoping
The ______ symbol is used to represent mulitipication A. Asterisk B. At (@) C. Number (#) D. Tilde (~) I got C.
June 12, 2012

DeskToping
Yes i did sorry. Thank you :)
June 12, 2012

DeskToping
The _______ symbol is contained on the numeric keypad. A. ) B. % C. + D. $ I got C. If you press the down-arrow key ( ): A. You will jump to the previos page B. You will jump to the next page C. The inseration point will move down one line D. The inseration point will move to ...
June 12, 2012

calculus
It looks like you just need product rule. Start with the e^(3x). Keep it like that the multiply by the derivative of that sec function which is then sec(7x)tan(7x) . Next add the derivative of the e^(3x) times the regular function from the sec function. So step two is +3e^(3x...
June 12, 2012

Desktoping
Press ____ to copy selected text to the clipboard *
June 11, 2012

Desktoping
In a bibliography, each source should be formatted using a ____ indent. A. center B. hanging C. left D. right I got D. Press ____ in copy selected text to the clipart A. Ctrl + A B. Ctrl + B C. Ctrl + C D. Ctrl + D I got A.
June 11, 2012

Chemistry
How many moles of H2SO4 are required to react with 50 mL of NaOH solution? NaOH is 1M.
June 11, 2012

DeskToping
Tgere should always be _______ spaces (s) after the period at the end of a sentence. A. 1 B. 1.5 C. 2 D. 2.5 I got A. To key a capital letter K, hold down the ____ key while pressing K key. A. Right Shift B. Right Alt C. Left Shift D. Left Alt I got C.
June 11, 2012

DeskToping
Thank You. And is "B" number one ?
June 11, 2012

DeskToping
If you press the ______ key , you will jump to the previous screen. A. Page Down B. Page Up C. Home D. End I got C. You should _______ insert a blank space before the percent symbol. A. always B. not C. occasionally D. NONE OF THE ABOVE I got B.
June 11, 2012

DeskToping
Oh excuse me i meant "D" for number three. Thats correct ?
June 11, 2012

DeskToping
Always keep your _____ straight when holding the mouse. E. arms F. back G. wrists H. ALL OF THE ABOVE I got G. The ______ finger used to key the asterisk symbol. A. S B. F C. K D. L I got C. The _____ keys are used to key symbols such as $ and % A. Alt B. Ctrl C. Funchtion D. ...
June 11, 2012

DeskToping
Thank You :)
June 11, 2012

DeskToping
Use your _____ finger to key the number zero (0) I. Sem J. K K. F L. A I got I. All of the following should always be capitalized. EXCEPT. M. Months N. Proper names O. Seasons P. Titles I got O.
June 11, 2012

DeskToping
_____ are symbols used to indicate changes that need tobe made to text. A. Proofreaders marks B. Correction Marks C. Insertion Marks D. Preview symbols I got A.
June 7, 2012

Fundemental DeskTop
If you press the ______ key you will jump to the previous screen A. Page down B. Page up C. Home D. End I got B . You should ____ insert a blank space before the percent symbol A. Always B. Not C. Occasionally D. NONE OF THE ABOVE I got B .
June 6, 2012

Desktoping
The ____ symbol is contained on the numeric keypad. A. ) B. % C. + D. $ I got C If you press the down arrow key ( ): A. You will jump to the previous page B. You will jump to the next page C. The inseration point will move down one line D. The inseration point will move to the...
June 6, 2012

Fundemental Desktop
If you can help with the other questions ive posted please do :) <3
June 6, 2012

Fundemental Desktop
Thank you :')
June 6, 2012

Fundemental Desktop
Many*
June 6, 2012

Fundemental Desktop
when keyboarding, you ______ let your back rest againist the back of the chair Q. should R. Should not S. should sometimes T. NONE OF THE ABOVE I got Q . Mnay windows-based programs provide _______________. such as Ctrl+O to open a file. A. Icons B. Pop-ups C. Shortcuts D. ...
June 6, 2012

humam resources
What motivational factors can influence individual performance in the workplace? How can compensation programs be used to motivate individual performance? What benefits can be used to motivate individual performance? Discuss other tools that are not related to compensation or ...
June 6, 2012

Early Childhood Education
An activity center is an area where A. teachers conduct creative activites. B. children participate in active play. C. children and teachers plan the schedule for a day. D. children work on their own with little supervision. I think the answer is D but want to be sure.
June 5, 2012

Early Childhood Education
The correct definition of the term aesthetics is A.sensing and gaining beauty and wonder from the environment. B. looking at the earth with a utilitarian purpose in mind. I think it's A. Please help
May 31, 2012

Early Childhood Education
To promote creativity in the classroom curriculum, a teacher should A. follow precise, preplanned steps B. provide materials that allow children to explore. I selected B, am I correct
May 31, 2012

dressmaking
Sometimes a person's sloping shoulders cause a garment to sag with diagonal wrinkles from the neck end of the shoulder seam to the armhole.To correct this,ripping out the sleeve and then doing which of the following is correct: A)Rip the soulder seam from the center to the...
May 29, 2012

math (please double check my answers)
x 2 - 4 for x = 5
May 27, 2012

Algebra II
(7 − 2) ÷ 5=
May 25, 2012

dressmaking
1)What sewing method should be used to attach a row of two mettalic threads around the wrist of a dress made of voile A)Trapunto B)Fagoting C)Couching D)smocking Im looking at either C or D 2)If you want to attach curved lines of beads,you can either apply each bead singly or ...
May 23, 2012

physics
For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble travel?
May 22, 2012

physics
For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble travel?
May 22, 2012

chemistry
Thanks and yeah idk those questions are pretty vague but thank you so much anyway!
May 21, 2012

chemistry
1. When the energy released by the formation of solute-solvent attractions is greater than the energy absorbed by overcoming solute-solute and solvent-solvent attractions, the dissolving process ____. 2. Mixtures are classified according to their ____. 3. A homogeneous mixture...
May 21, 2012

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