Tuesday

October 21, 2014

October 21, 2014

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*

**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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