Questions Asked on
February 8, 2011

algebra
50word response to the following: How do you know when an equation has an infinite number of solutions?
asked by kathy 
algebra
50word response to the following: How do you know when an equation has no solution?
asked by kathy 
science
i am studing about seafloor spreading rate i need to know how to calculate the average age and distance for this pair of peaks 12.5 & 11.0
asked by tristen 
Algebra 1
Graph the system of inequality x+2y 0. Thank you
asked by Esther 
chemistry
The volume of a gas at 20 C and 0.4 atm is 10 mL. What volume will the same gas sample occupy at standard conditions?
asked by pablo 
To John
If you have that question about the N2O4/NO2 equilibrium I can help if you repost. I can't find it. I think you posted it Saturday but it may have been Sunday.
asked by DrBob222 
HISTORY
What were some of the encounters between Europeans and Native Americans? Consider why Europeans came to the New World, what they expected to find, what they actually found, and how the two sides interacted with each other?
asked by Tammy 
Chemistry
how to calculate number calories to heat 285 grams h2o
asked by Bo 
Math
A toy manufacturer needs a piece of plastic in the shape of a right triangle with the longer leg 5cm more than the shorter leg and the hypotenuse 10 cm more than the shorter leg. How long should the sides of the triangles be?
asked by Bethany 
Chemistry
If a saturated solution prepared by dissolving solid BaSO4 in water has [Ba2+]= 1.04*10^5M, what is the value of Ksp for BaSO4?
asked by Melissa 
Pyschology
can anyone help me with this. I can't think of anything or explain to me. Post an example of a simple experiment of your own creation by following this format: I would like to investigate the effects of _____________ on this behavior: _____________. Half
asked by Jeannie 
Statistics
Data in 1980 showed that about 48% of the adult population had never smoked cigarettes. In 2004, a national health survey interviewed a random sample of 5000 adults and found that 54% had never been smokers. Create a 95% confidence interval for the
asked by Rosa 
Chemistry
Calculate the molar solubility of MgF2 in 0.08M MgCl2 at 25 degrees C.
asked by Melissa 
trigonomtry
can you correct the rest for me please? Express each as a function of theta: a. sin (270deg + theta)= cos theta b. cos (pi + theta)= cos theta c. tan (810 + theta)= ????? d. sin (theta  180)= sin theta
asked by Anonymous 
PreCalc
y=cos^1(6pi/7) Is the answer undefined? Thanks for your help.
asked by Johanna 
chemistry
Fishliver oil is a good source of Vitamin A. When 0.1232 g of fish liver oil is dissolved in 500. mL of solvent, an absorbance of 0.724 is recorded. When 0.00167 g of Vitamin A is dissolved in 250. mL of solvent, an absorbance of 1.018 is recorded.
asked by David 
geometry
Rectangle ABCD has diagonals AC and BD. If the diagonal lengths are AC = 36 cm and BD = (3x + 3) cm, find the value of x
asked by Nelson 
Math
1/c+2 + 1/0.30+0.60 = ?? How do i find a common denominator for this?
asked by cody 
geometry
If side BC = 4 cm, side DE = 6 cm and side AE = 9 cm, then what is the measure of side AC?
asked by la 
statistics
Thirty percent of all automobiles undergoing a headlight inspection at a certain inspection station fail the inspection. Among 15 randomly selected cars, what is the probability that at most four fail tha inspection?
asked by Kris 
Chemistry
Select all cases in which the attraction between units in the solid can best be classified as electrostatic bonding forces. RbBr H2O2 HI MgI2 Na2O SiO2(quartz) None
asked by JA 
practical english
what are the four things you look when proofreading
asked by jules 
english
what does cliche mean
asked by jules 
enviromental studies
please could someone help me with my enviro homework im stuck on this question What the Green Revolution involved give 6 answers. ive put to improve the productivity of crops in LEDCs and to reduce famine. im not sure if these answers are right.
asked by davey 
geography gcse
1)Why do some glaciers have more than one medial moraine? is it because they are formed by two lateral moraines and has more than one source. 2)where does most of the lateral moraine come from? is it from the valley sides 3)why is the terminal moraine
asked by Polly 
maths
Can any one help with the following please: Solve the initialvalue problem: problem: dy/dx: 4(3cos(6x)1)/1+2xsin(6x) y=12 when x=0
asked by Claire 
physics
Calculate the net force needed to give an acceleration of 0,5m/s to a trolley with a mass of 1,5 kg
asked by Ephrime 
Andy
Name: Lesson 3 Assignment.Instructions Explain the differences between solving these two equations: •log3(x  1) = 4 and log3(x  1) = log34. I think it has to do with the formulas
asked by andy 
redrwlsgeography
thanks for your help i would have labelled my question geology but it is for geography sorry
asked by polly 
calculus
find the dimensions of the rectangle of maximum area that can be inscribed inside the ellipse (x/4)^2+(y/3)^2 = 1
asked by Laura 
physics
why there is no proportionality constant in equation of centripetal acceleration after removing proportionality sign?
asked by amna 
fizik asas
The earth travels in a nearly circular orbit about the sun. The mean distance of the earth from the sin is 1.5¡Á1011 m. What is the approximation speed of the earth in its orbit around the sun?
asked by shuzika 
AP Calculus
Locate the absolute extrema for f(x) = 3/x1
asked by Sandy 
AP Calculus
Determine the critical numbers for y=sq root of (x^2  2x 15)
asked by Sandy 
AP Calculus
Suppose that f(0) = 4 and f'(x)< or equal to 2 for x>0. Apply the MVT to the interval [0 , 3] to prove that f(3) < or equal to 10
asked by Sandy 
Accounting
Starfax, Inc., manufactures a small part that is widely used in various electronic products such as home computers. Operating results for the fi rst three years of activity were as follows (absorption costing basis): In the latter part of Year 2, a
asked by Aaron 
Math
Sally's age is 12 years plus half her age. How old is she? Billy is twice as ld as Sally was when billy was as old as Sally is now. And the total ages is 28 how old are they?
asked by Anjanique 
Algebra 1
Explain the differences between solving these two equations: •log3(x  1) = 4 AND log3(x  1) = log34 I think it has to deal with the formulas?
asked by Andy 
chemistry
How many grams are there in 2 moles of sodium?
asked by twynna 
chemistry
What is the percentage composition of nitrogen in silver nitrate?
asked by twynna 
science
what organism made the jump from water bound to land?
asked by J'lynn 
Discrete Math
Consider the following relation on R1, the set of real numbers R1 = {(1,1), (1,2), (2,1), (2,2), (3,3), (4,4), (3,2), (2,3)} Determine whether or not each relation is flexible, symmetric, antisymmetric, or transitive. * Reflexive because the relation
asked by Laurey 
chemistry
determine the amount of solute needed to make 100ml aqueous solution of NaCl and MgCl2 that will cause a 10 degree change in freezing point. Determine the amounts of solute needed to make 100ml aqueous of AlCl3 and ethanol that will cause a 10 degree
asked by shaknocka lewis 
chemistry
calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change in freezing point of water. solutes are Al2(SO4)3, KBr, Mg(NO3)2
asked by shaknocka lewis 
chemistry
calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change in freezing point of water. solutes are Al2(SO4)3, KBr, Mg(NO3)2
asked by shaknocka lewis 
chemistry
why would it not be useful to just use pure ethanil or pure ethylene glycol as aN ANTIFREEZE SINCE THEIR NORMAL FREEZING POINTS are 114.1 degrees celsius and 12 degrees celsius respectively
asked by shaknocka lewis 
chemistry
why would it not be useful to just use pure ethanil or pure ethylene glycol as aN ANTIFREEZE SINCE THEIR NORMAL FREEZING POINTS are 114.1 degrees celsius and 12 degrees celsius respectively
asked by shaknocka lewis 
chemistry
determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution
asked by shaknocka lewis 
testing of materials
Could you please show me how to solve this problem ! The unit weight of a soil is 122 lb/ft^3 at a water content of 12.6%. The specific gravity of the soil is 2.72. Find dry unit weight,porosity,and degree of saturation.
asked by michael 
chemistry is this answer right
115 grams of KCl is dissolved in 750 ml of water. what are the molality, molarity, mole percent, % mass, ppm by mass. what would the freezing point and boiling point of that solution assuming Kf of water is 1.86 degree celsius/m and Kb is .0512 degree
asked by shaknocka lewis 
testing of materials
Could you please show me how to solve this problem ! A soil sample is 5.08 cm in diameter and 47.3 mm high. Find volume in cm^3. Also find density (g/cm^3) if its mass is 137.33 g.
asked by michael 
Calculus Quiz Today
1. find the values of s for which each function is continous: f(x) = [ x if x less than or equal to 1] [2x1 if x greater than 1] 2. determine all values of x at which the function is discontinuous: f(x) = (x^22x)/(x^23x+2) Could someone please tell me
asked by Jamie 
testing of materials
Could you please show me how to solve this problem ! Volume= 1.00cm^3,mass of water= 0.49 g, dry mass= 1.32 g, RD=2.70
asked by michael 
Calulus Completely lost
Find the indicated onesided limit, if it exists 1.lim f(x) and lim f(x), where x>0^+ x>0^ 2. f(x) = [2x if x is less than 0] [x^2 if x is greater than or equal to 0]
asked by Anonymous 
english
Backpacking also has its basic four, these being, in order of importance, hiking shoes, the backpack, sleeping gear, and shelter. What correction should be made to this sentence?
asked by Anonymous 
Calculus Need of Urgent help
find the indicated limits, if they exist. 1. lim (3x^3+x^2+1)/(x^3+1) x> infinity 2. find the slope of the tangent line to the graph of the given function at any point: f(x) = 2x +7 Could anyone please, please, please explain to me how to do these
asked by Anonymous 
Chemistry
What is the concentration of a solution of 1.70 g of AgNO3 dissolved in enough water to make 250 mL?
asked by Ev 
physics
water 20 degrees celsius flows through a 25 mm diameter pipe at a rate of 50 liters per minute. is this laminar or turbulant flow or both?
asked by Todd 
biology
using lactose and a ph value of 3,5,7,9,11, Why was there no increase in the reaction rate with 8.0 g. of substrate as compared to 4.0 g. of substrate? What would you need to add to see an increase in the reaction rate with 8.0 g. of substrate?
asked by Dancerdi 
Calculus: for mathmate
Find the slope of the tangent line to the graph of the given function at any point: 1. f(x)= 13 I understand that you said the tangent to the line is the coefficient of x, but what would be the slope of this problem. For problems like this are there
asked by Anonymous 
physics
Outside air generally contains some water vapor (typically 12% by mass). Does it take more, less, or the same heat to raise the temperature of 1kg moist air than is needed to raise the temperature of 1kg dry air by the same amount?
asked by Todd 
Chemisty
explain how you get a decompositin..?
asked by Arcaral 
physics
Two blocks connected by a string are on a horizontal frictionless surface. The blocks are connected to a hanging weight by means of a string that passes over a pulley as shown in the figure below, where m1 = 1.75 kg, m2 = 2.85 kg, and m3 = 4.95 kg. (a)
asked by Anonymous 
physics
a) Find the maximum rate of deceleration of a car on a dry, level road, assuming the coefficient of static friction between tires and pavement equals 1.4. (b) Find the minimum stopping distance if the car has an initial speed of 27.5 m/s. (c) Repeat parts
asked by Anonymous 
Calculus
Find the values of x for which each function is continous: f(x) = x^3 2x^2+x 1
asked by Anonymous 
maths
3(x+y)=7(yx) 5(3xy)=x3
asked by oniovusa samuel 
Exponents
(2x . 3x + 1) divide by (2x . 3x1) 2 divide by 2x1
asked by Tremaine 
Math
How do you solve for 4y+8=15(3y10)!
asked by Jessica 
Physics
Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is
asked by Emily 
Business math
The Morrison family bought a car for $22,000 was which was financed at $600 per month for 40 months. The down payment was $3000
asked by Anonymous 
finance
A firm has beginning inventory of 300 units at a cost of $11 each. Production during the period was 650 units at $12 each. If sales were 700 units, what is the value of the ending inventory using LIFO? Note: LIFO, lastin, firstout represents that the
asked by james 
mathematics
Train L and Train M leave a station at the same time heading in opposite directions. Train L is going north at an average speed of 70 miles per hour (mph). Train M is going south at an average speed of 85 mph. How long does it take each train, in hours, to
asked by derp 
economics
what stock market should i invest in besides apple that would be good????????? please help me!!!!!!!!!!!!!!!!!!!!!!
asked by roxy 
Geometry
THe area of a trapezoid is 80 units. If its height is 8 units, find the length of its median?
asked by Malik 
5th grade math
I need help with this problem..the answer and how you got it. thanks amy gets 1 hour for lunch at her job. today she used 1/4 hour to eat and 2/5 hour to run an errand. she spent the rest of her lunchtime writing a letter. how may minutes did amy spend
asked by Karli 
Chemistry
3 H2 (g) + N2 (g) > 2 NH3 (g) How many liters of ammonia gas can be produced from 10.0 L of N2 and 20.0 L of H2? Assume all gases are measured at the same temperature and pressure.
asked by James 
Math
Simplify the expression: (3x^28x^3+4x)(9x^2x^3+x)+4(6x7)
asked by Jason 
Physics
A stopped 100okg car exerts 160kW of power as it accelerate. If it is only 75% efficient, how far will it travel in 4 seconds?
asked by Shannon 
AP European History
I have to write an essay answering the following questions: What is the relationship between the study of geography and the study of history? What are the advantages and disadvantages of Europe’s geography? Explain the impact of Europe’s geography on
asked by Alex 
BIS/219
Looking for all 5 weeks of assignments
asked by Michael 
Physics
A 60kg biker on a 20kg bike exerts 600W of power to accelerate from 1m/s to 9m/s in a distance of 40m. What is the force of friction acting on the bike and biker?
asked by Shannon 
Physics
A 1000kg car accelerates from 3m/s East to 24m/s East at a rate of 3m/s. If the force of friction is 500N West; how much ower must the car exert? If heat and mechanical losses make the car only 60% efficient, what total power must be exerted to accomplish
asked by Shannon 
Business Law/ Partnership Contract
I'm trying to write a partnership contract but not sure if it sounds ok....Please let me know if I should change anything. This Agreement is made between Tim (“Couch”) and Bert (“Parker”) on February 1, 2011. Couch and Parker are sometimes referred
asked by crystal 
Math
Multiply/divide and simplify: (12x^58x^3+4x)/(4x) The answer I got is 3x^42x^2+1. Is this correct?
asked by Jason 
AP European History
Would hitler's invasion of Russia during WWIi and the attack on Normandy be good examples of how geography has influenced Europe's history? I can't think of another one, but another would be nice, expecially something about trade or commerce. Thanks!
asked by Alex 
chemistry
standard enthalpies of formation H20(l) = 286 LiOH(s) = 487 standard enthalpies of solution for LiOH(s) to split into it's ions is 21 all values are in KJmol1 Use the data given to calculate a value for the enthalpy change for the reaction of lithium
asked by Gemma 
math
Nathan's age can be described as 5 more than 3 times his son's age. If his son's age is represented by the variable "s", write the algebraic expression representing Nathan's age using "s".
asked by Anonymous 
Math
Find the indicated onesided limit, if it exists 1.lim f(x) and lim f(x), where x>0^+ x>0^ 2. f(x) = [2x if x is less than 0] [x^2 if x is greater than or equal to 0]
asked by Anonymous 
math
1. find the values of s for which each function is continous: f(x) = [ x if x less than or equal to 1] [2x1 if x greater than 1] 2. determine all values of x at which the function is discontinuous: f(x) = (x^22x)/(x^23x+2) Could someone please tell me
asked by Anonymous 
chem
How do you separate a mixture of iron pellets, KBr, and sand?
asked by millie05 
physics
Why does cross sectional area of a liquid stream reduces while falling vertically??
asked by Aman 
Algebra 1
Explain the differences between solving these two equations: Brake down the steps. log3(x  1) = 4 and log3(x  1) = log34 )
asked by Andy 
math
if csc theta= 5/3 and theta has its terminal side in quadrant III, find the exact value of tan 2 theta.
asked by hannah 
prealgebrais my answer right
Graph 3x+4 My points are at (0,4) and (1,1)
asked by Lisa 
Math
What are is the 4 step process when finding the slope of the tangent line at any given point?
asked by Anonymous 
Physics  Please Help
Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is
asked by Emily 
Chemistry
A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3¯ ] in the second solution? A) 0.0100M B) 0.0200M C) 0.0300M D) 0.0400M E)
asked by Paul 
computer science 100
which of the following are used in a traditional mainframe computer environment
asked by luis 
human resource management
Informative and positive messages are not necessarily short: Instead , the length of a message depends on all the following EXCEPT:
asked by erica 
english 2
I need to create a list of power shifts, starting from the opening scene of Act I. It's supposed to follow the exchange of power throughout the play. I have read the play two times already and still need help.
asked by taylor 
HUMAN RESOURCE MANAGEMENT
When writing informative and positive messages, you should include reader benefits when:
asked by erica 
human resource management
Which of the following would not be an informative or positive message? a. Summary b. Claim adjustment C. Transmittal d. Direct request
asked by erica 
Chemistry
2 CO (g) + O2 (g) > 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO > CO2 + O(fast) O + CO > CO2 Based on this mechanism what is the rate law for this reaction?
asked by John 
Satistics
Is this problem correct Answer: 0.90^5 = 0.6562
asked by charles 
prealgebrais my answer right
Today only, a desk is being sold at a 27% discount. The sale price is $219.00 . What was the price yesterday? Is it $300.00
asked by Lisa 
Chemistry
Reactions can be speeded by increasing the proportion of reactant molecules which collide with proper orientation. This can be accomplished by......... A)compressing the reactant mixture. B) heating the reactant mixture. C) addition of a catalyst. D)
asked by Gina 
Physics
In two successive chess moves, a player first moves his queen four squares forward, then moves the queen five steps to the left (from the player’s view). Assume each square is 2.0 cm on a side. Using forward (toward the player’s opponent) as the
asked by Kelly 
statistics
Assume the IQ's of men and women can be described by a Normal model with a mean of 100 and a standard deviation of 15. For the first part: What percent of people do you expect to have IQ's over 120?
asked by alexandra 
a&p
which of the following would help clear the body of toxins and prevent poison buffering,pH partitioning,ionization,denaturation, fermentation.
asked by noble 
Math
Can please someone check my answer: a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by
asked by Sue 
Chemistry
Ln( K/ 4.90*10^4) = 1.56189 Solve for K
asked by Jem 
chemistry
calculate the molarity of the solution 0.56 mole of BaCl2 in 100.0mL of solution.
asked by brandy 
Science
What is the mass of saturated solvent of Potassium nitrate at 80degress in 100g of water
asked by Unknown 
writing
Compare and contrast your abilities as an academic writer now as opposed to when you began your studies at the University of Phoenix. Using four comparatives and four superlatives within your responses, explain what has led to these changes and what
asked by Melvin 
algebra
y = 4x  2 find the coordinates of the points (1),(1),(3).
asked by andrea 
Physics help on the TI84 calculator
Could someone remind me how to calculate this on the TI84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^7 but I'm not doing the input correct Please help
asked by Leah 
chemistry
A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system?
asked by Anonymous 
Physics
Can someone please tell me how to calculate the standard deviation of the following values? 0.985 0.985 1.005 1.455 1.035 And please for the following numbers too 1.47 1.52 1.50 1.45 1.39
asked by Abi 
chemistry
Do 65 grams of oxygen and 44 grams of carbon contain equal number of atoms? Calculate the number of atoms?
asked by twynna 
geometry
Prove line segment BP is 2/3 of line segment BD in triangle ABC
asked by Lk 
chemistry
What is the name of the following compounds? A)CO B)HCI2O
asked by twynna 
chemistry
How many grams are there in 2 moles of each of the following? A)Xe2 B)C6H12O6 C)CH3COOMg
asked by twynna 
Math
Solve by factoring: (2x+9)(x6)=0
asked by Jason 
chemistry
Calculate the number of moles and atoms. A)64 gm of O2 B)58.9gm of CI C)90.5gm of (NH4)2SO4 D)243gm of Mg2 Please help i have NO CLUE HOW TO DO THIS THANKS!!!
asked by twynna 
Physics
I have performed an experiment of simple harmonic motion and the values I got Mass(g)Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having
asked by Abi 
college physical science
What is the force exerted by a train travelling from rest to 120 mph in 15 min? The train weighs 200,000 lbs.
asked by ann 
Chemistry
How many protons, neutrons, and electrons are in a flourin19 atom? The answer is 9 protons, 10 neutrons, and 9 electrons. How did they get this??
asked by Danielle 
Enghlish
Explain effective practices for developing a topic sentence.Explain effective means for writing a paragraph.Summary,Anlysis,synthesis,and Evalution.Identify the role of reading in the writing process.identify the differences between
asked by Sanghai Sherman 
statistics
76% of toddlers get their immunization. Suppose that 6 toddlers are selected at random. What is the probability that at least one has not received the recommended immunization?
asked by Chris 
Math
Carmen received some money for her birthday on Friday. That night, she took her friend out to dinner. She spent half of her check for dinner. Then she tipped the waiter $6. The next evening she went to dinner alone, spent half of the money she had left,
asked by Jesse 
Chemistry
Which of the following can be amphoteric? A) Cl¯ B) H3O+ C) HPO4¯ D) PO4¯³ E) HCl
asked by Pat 
math
there are a group of ducks and goats there are 99 heads and legs among them there twice as many ducks than goats are many ducks and goats are there?
asked by Eddie 
statistics
a standardized test has a mean of 88 and a standard deviation of 12. What is the score at thr 90th percentile? Assume a normal distribution.
asked by cw 
chemistry
If the solubility of a particular solute is (10 g/100 g H2O) at 20°C, what solution concentration would represent a supersaturated aqueous solution of that solute?
asked by ashley 
match
the sum of two times a number and 5 is 11? equation form.
asked by jay 
Enghlish
Explain effective practices for developing a topic sentence.Explain effective means for writing a paragraph.Summary,Anlysis,synthesis,and Evalution.Identify the role of reading in the writing process.identify the differences between
asked by Sanghai Sherman 
Discrete Math
Which of these relations on {0, 1, 2, 3} are equivalence relations? Justify the relation(s) that are not equivalent. R1: {(0,0), (1,1), (2,2), (3,3)} R2: {(0,0), (1,1), (1,3), (2,2), (2,3), (3,1), (3,2), (3,3)} R3: {(0,0), (0,1), (0,2), (1,0), (1,1),
asked by Laurey 
Calc
derivative of (x^2+14)/x
asked by Matt 
american national government
IF YOU COULD CHANGE ANY CONSTITUTIONAL LAW, OR AMENDMENT, WHAT WOULD YOU CHANGE, AND WHY.IF YOUR PROPOSAL MADE IT TO THE CONGRESSIONAL SEAT FOR VOTES WHAT WOULD YOU PROPOSE AS A FIX IT ALL.
asked by ms. davis 
U.S History
what root cause of World War 1 caused nations to "glorify their militaries
asked by Anonymous 
chemistry
If you add 50 g of sylvite in 100 ml of water at 60 ° C, the resulting solution will she unsaturated, saturated or supersaturated? You prepare a solution and you add 50 g of potassium nitrate to 100 ml of water at 50 ° C. What type of solution are you
asked by Kay 
science
What role do condensation nuclei play in condensation? (cloud flormation) I did some research and found that the condensation nuclei attract water and produce condensation so would that mean my answer would be something like 'that the condensation nuclei
asked by rachel 
math
A turtle is crossing a field, going 1 mile in 5 days. what is his speed in ft/sec?
asked by tasha 
computer science
18 MB of data are to be transmitted over a 4 megabits per second connection. How long should the complete transmission take, to the nearest 0.1 s?
asked by Subash 
geometry
what is the perimeter of trapeziod (3,3) (5,0) (2,3) (4,0)
asked by keith 
Vectors
Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use
asked by Phil 
prealgebra
If I have Y=3X+21 do i simplify or keep it just the same???
asked by emily 
physics
A piece of gold wire is used to form a circular loop of radius 12.3 cm. The wire has a crosssectional area of 11.1 mm^2. Points A and B are 90.0° apart. Find the resistance between points A and B.
asked by Eric 
math
how to find the mean for reading 3 hours in 5 days
asked by lizzy 
Calculus
Find the equation of the line tangent to the graph of f at (1,1) where f is given by f(x)=2x^32x^2+1
asked by Grace 
sciences
What role do condensation nuclei play in condensation? (cloud flormation) please help!
asked by Anonymous 
health
if a medical assistant knows that a patient's boy friend has Hiv and the patient does not know what should she do with the information
asked by Anonymous 
Physics nd the TI84 Calculator
Could someone remind me how to calculate this on the TI84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^7 but I'm not doing the input correct Please help
asked by Leah 
algebra 1
Graph the system of inequality x+2y 0. Thank you
asked by esther 
management information system
Is spyware ethical? why or why not?
asked by kim 
PreCalculus
I'm having trouble with this question. The number of horsepower H required to overcome wind drag on a certain automobile is approximated by: H(x)= 0.002(x)^2 + 0.005(x)  0.029, [10 is less then/equal to (x) is less then/equal to 100]. Where x is the
asked by Sam 
averbs/ ajectives
Students are often confused about the use of the words good and well in their writing. Write a 100word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the
asked by Anonymous 
chemistRY
When you react hydrogen gas with nitrogen gas to form ammonia, How many grams of all species ( reactants and products) are left when you start with 140 grams of nitrogen and 40 grams of hydrogen?
asked by jennifer 
chemistRY
When you react hydrogen gas with nitrogen gas to form ammonia, How many grams of all species ( reactants and products) are left when you start with 140 grams of nitrogen and 40 grams of hydrogen?
asked by jennifer 
chemistry
Calculate the mass of water produced by 64 grams of CH4 CH4(G)  2O2 (G) CO2(G)2H2O(l)
asked by jennifer 
Chemistry
The element iron (Fe) is 45.8% by mass of a mixture. Write both conversion ratios for the following mass percent values.
asked by Alexa 
Geometry
How do you find the centroid of the coordinates D(3, 8), E(3, 0) and F(9, 4). What are the steps?
asked by Camile 
CHEMISTRY
For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) SiC(s) +2CO(g)
asked by jennifer 
CHEMISTRY
For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) SiC(s) +2CO(g)
asked by jennifer 
english
What are the differences between the schoolmaster and guest in terms of characterization? why is this important?
asked by ted 
english
That question was related toa short story called 'the guest'.
asked by ted 
english
How does the decription of a setting of a short story reflect or relate to the different conflicts occuring in the story? Can you give some examples, if you can. pls help
asked by ted 
ecology
Were should I look for info on land and aquatic biomes, if all I want to know is the plats that grow there, and the animals that live there, as well as the annual ammount of rainfall and average temp. without having to do a lot of reading.
asked by ELizabeth 
algebra
y = 4x 2 find the y coordinates of the points (1),(1),(3).
asked by andrea 
ENGLISH
Can you please proof this letter for all errors? I need to make sure it is free of errors. Dear Mr. Wilshire: Pursuing to our discussion last week we expected to receive your completed application together with the minimum enrollment fee. If you are
asked by ANGELA 
Math
Write f(x)=x^3+8x^2+13x+33 in the form f(x)=(xk)q(x)+r when k=7.
asked by Anonymous 
9th grade biology
How can you tell, using a microscope, that an onion cell has depth?
asked by Alexis 
ENGLISH
Please make the correction so that my paper is error free. Dear Ms. Powell Thank you for your order. The enclosed invoice indicted that the shipment was sent under separate covers. This shipment includes all volumes except the final volume that is being
asked by ANGELA 
8th grade science
What is the symbiotic relationship between scallops and sponges?
asked by Alicia Cunn 
Math
The formula A=bh is used to find the area of a parallelogram. If the base of a parallelogram is double and its height is doubled, how does this affect the area.
asked by Cindy 
Math (Trigenometry) 3
Write f(x)=x^412x^3+59x^22138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the xaxis. I figured I
asked by 2012 
Jiskha
How do I remove questions I have previously asked?
asked by Alicia Cunn 
us history
what is an example of the eighth ammendment?
asked by emma 
Math
The following is a list of 11 measurements: 2,82,87,1,51,2,53,87,20,32,35 Suppose that these 11 measurements are respectively labeled . (Thus, is labeled , is labeled , and so on.) Round your answer to at least two decimal places.
asked by Lisa 
Genetics
A recessive eye color mutation (se) in fruit flies leading to a color called "sepia" is determined by an autosomal gene. Another recessive mutation called "brown" (bw) causes brown eye color, and is determined by an autosomal gene on a different
asked by Anonymous 
English
Match these. 1. Cross 2. Crescent 3. Buddhist 4. Hindu 5. believer 6. infidel 7. secularism 8. Christian 9. Islamic 10. Bible 11. Koran 12. BhagavadGita 13. Upanishads 14. Ifa, Orunmila (Yoruban
asked by Anonymous 
math
if a figure has 48 square units as it's area and 38 units as it's perimeter what would the figure look like?
asked by kate 
geometry
The altitude upon the hypotenuse of a right triangle divides the hypotnuse into segments of 3 and 12. find the length of the altitude
asked by Jorge 
algebra
write a quadratic equation in the variable x having given the numbers as sollutions type the equation in standard form ax^2+bx+c=0. solution 4 only solution
asked by ella 
Shurley English
My son has to classify each word in the sentence; The boys gave my brother a bat. He can't figure out what "my" would be classified as.
asked by Reagan 
poetry
I have to write a sonnet including one metaphor, one similie, two examples of a sound device such as an alliteration, consonance or assonance, and one example of enjambment. It may also include allusions, metonymy, synecdoche or allusion I am doing a
asked by Sarah 
beginning algebracheck my answer
[(x^21)/(x3)] / [(x^2x2)/(3x9)] I get (3x3/x2)
asked by Rachal 
math
what would a data set with 10 numbers with a range of 85 a mean of 50 and a median of 40 look like
asked by joshua 
Math
Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear is different from solving a linear equation.
asked by Cindy 
ENGLISH
What do I do forr the title of a book because in the second paragraph American Literature Masterpieces is the title. Also pllease check for any other errors. Would you be interest in owning one of the most important books collection in our nation history?
asked by ANGELA 
chemistry
If a skateboarder is going 40 meters per second after 3 seconds, what is the initial velocity of the skateboarder with an acceleration of 2.1 meters per second squared?
asked by Anonymous 
beginning algebra
Factor: 8w+uw+vu8v
asked by Rachal 
chemistry
Predict the products and then write the complete balanced chemical equation with states of matter: 1. Sulfuric Acid and sodium hydroxide 2. Aluminum and copper (II) sulfate 3. Silver nitrate and iron (III) chloride 4. Magnesium heated 5. Aluminum oxide
asked by Graham 
math
Mrs. Gainey needs to buy string for 5 students to do a science activity. Each student needs 2 feet of blue string and 1 foot of red string. How many yards of string does Mrs. Gainey need to buy?
asked by ron 
10THGRADE CHEMISTRY
HOW WOULD YOU PREPARE ML OF A 0.250M SOLUTION OF Ca(NO3)2?
asked by PORSHA 
Math (Trigenometry)
Using the factors (5x+4) and (x+1), find the remaining factor (s) of f(x)=20x^4+91x^3+60x^271x20 and write the polynomial in full factored form.
asked by Desprate 
Math
mark knows that his yard is 2 1/4 times as long as it is wide. which equation shows the length, in feet, of the fence that goes all the way around the yard if mark measures the width as w feet? 2 1/4 w feet
asked by Deven 
Molecular and Electron geometry
Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd
asked by Kate 
Math
Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear inequality is different from solving a linear equation.
asked by Cindy 
History
What are two other social changes that occurred during 1865 and 1945 that's not on this list: The Fourteeth Amendment Railroads City life and City culture The political machine Wilson's Fourteen Points Progressivsm World War I Pearl Harbor World War II
asked by Rena 
gen chem 2
In the chemical kinetics experiment, determine the dilution of the stock bleach solution. The bleach used will be around 5.5% (weight/volume). Convert this to molarity
asked by jen 
physics
how do types of nuclear radiation differ in electric charge?
asked by makayla 
physics
3. If a man does 300 j or work by pushing a table 2.0 m across the room, what was the magnitude of the applied horizontal force?
asked by Lorraine Emul 
math
i am a number between 20 and 30. put me into 6 equal groups.ther is a even number in each group and one is left over. what number am i?
asked by Anonymous 
science
what are the defence and offence of crocodile?
asked by Justin 
chemistry
Given: hexane density at 25 degrees Celsius (.660g/ml) Vapor pressure of pure substance at 25 degrees Celsius (150 torr) heat if vaporization (21.0 kj/mol) 55 mL What mass of hexane vaporizes at 25 degrees Celsius?
asked by Elizabeth 
Algebra II
Solve each equation. Check for extraneous solutions. Solve:x+5=3x7 My answers were: x=6 and x=.5 I don't think they are right though, but I should get 2 answers right???....Help!
asked by Attalah 
PHYSICS
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side
asked by KIKSY 
College Chemistry
Molarity of .100 mole of urea (CH4N2O) in 250.0 mL of solution
asked by Audrey 
science
what is the lifecycle of the crocodile?
asked by Justin 
beginning algebra
In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?
asked by Rachal 
Math
Hey can you please explain Fibonacci numbers in the simplest way possible because I really don't get them. Like i know the sequence goes 1,1,2,3,5,8,13,21, etc...But we have to fill in a table by plugging the numbers 19 in using the equation Fn+1. Please
asked by Jon 
physics
A car has an acceleration of 16 pc/y2. This value can be CONVERTED into which of the following units?
asked by Tiffany 
science
what are the defers and the offence of the crocodile?
asked by Justin 
physics
At New York City, the earth's magnetic field has a vertical component of 5.2 105 T that points downward (perpendicular to the ground) and a horizontal component of 1.8 x 10^5 T that points toward geographic north (parallel to the ground). What is the
asked by aml 
physics
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's
asked by aml 
prealgebra
If I have Y=3X+21 do i simplify or keep it just the same???
asked by emily 
advanced funtions
what are similarities and differences between y=x line and a power funtion with an odd degree? i wrote that: similarties both have funtions pass through the orgin. both have one y int and one xint. both have the same ending. both have the same domain and
asked by maharani 
Math (Trigenometry)
Find two positve real numbers whose product is a maximum and whose sum of the first number and four times the second number is 120. This is as far as I've gotten in solving it. *first number is x. *second number is y. *xy=maximum, which is unknown.
asked by Anonymous 
Learning Chater School
Dana has a piggy bank(she is just starting to save money in her piggy bank). 1 All of the coins in her bank expect two quarters. 2 All of the coins in her bank except two are nickels 3 All ofthe coins in her bank except two are pennies . How much money
asked by Marina 
Math
The following is a list of 11 measurements: 2,82,87,1,51,2,53,87,20,32,35 Suppose that these 11 measurements are respectively labeled. x1,x2¡¦¡¦¡¦¡¦¡¦x11.(Thus,2 is labeled x1,82 is labeled x2 and so on.) find ¢²_(i=1)^11¢Æx1/49 Round
asked by Rachal 
algebra
Five socks colored blue, brown, black, red, and purple are in a drawer. How many combinations of three socks can be randomly selected from the drawer?
asked by sal 
algebra
Given a cube with volume 30 cubic centimeters, find the number of centimeters in the length of an edge.
asked by Mike 
Calculus
A cubic polynomial function f is defined by f(x) = 4x^3 + ax^2 + bx + k? A cubic polynomial function f is defined by: f(x) = 4x^3 + ax^2 + bx + k where a, b, and k are constants. The function f has a local minimum at x= 1, and the graph of f has a point
asked by Leanna 
Physics
A certain car is capable of accelerating at a uniform rate of 0.85m/s2. What is the magnitude of the car's displacement as it accelerates uniformly from a speed of 83km/h to one of 94km/h?
asked by Timmi 
Algebra
Tom drove to Easton from home at 50 mph. His return trip took 30 minutes longer because he ran into traffic and could only drive 45mph. How many miles is it from Tom's home to Easton? Express answer as a decimal.
asked by Mike 
Algebra
A revolving restaurant rotates one complete turn every 56 minutes. In the 21 minutes it takes to eat the peaches jubilee dessert, through how many degrees does the restaurant revolve?
asked by jay 
Algebra
Evaluate 1/2^2 x^3 y^5 for x = 2 and y = –4
asked by Presley 
algebra
According to the world almanac, in 1990 there were 41,223,804 students enrolled in fulltime day schools and there were 2,397,351 classroom teachers for these students. On average, how many pupils were there per teacher? Round answer to the nearest tenth.
asked by jay 
Algebra
I need toIs the following pair of lines parallel or perpendicular? Prove your answer. 2y – x = 2 y + 2x = 4 can you explain how to break this down ...
asked by Donna 
statistics
For the numbers –6, –3, –8, and –1, which of the following that includes all four could be a good class?
asked by miriam 
science
What does it mean to say that a variable’s categories may be collapsed? What should the researcher keep in mind when collapsing categories for analysis?
asked by Stephy 
chemistry
As you saw in Part B, the vapor above the cyclohexaneacetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X(cy) vapor), is cyclohexane?
asked by me 
Math (Trigenometry)
Write f(x)=x^412x^3+59x^22138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the xaxis. I figured I
asked by Anonymous 
Trigenometry Math
Using the factors (5x+4) and (x+1), find the remaining factor (s) of f(x)=20x^4+91x^3+60x^271x20 and write the polynomial in full factored form.
asked by Anonymous 
Equivalent. Fraction
What is 6/12 in a equivalent fraction
asked by Kate 
math
A (4,3) B (3,3) c (4,5) Find the slope of AB, BC, and AC. Fond the tangent of each angle and their angle measure using: tanX=m2m1/1+m1m2 m2 being the slope of the terminal side (measuring counterclockwise)
asked by hw 
PhysicsPlease help
Could someone remind me how to calculate this on the TI84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^7 but I'm not doing the input correct Please help
asked by Leah 
Math (Trigenometry)
Write f(x)=x^412x^3+59x^2138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the xaxis. I figured I
asked by Anonymous 
math
what is 8x2y=6 please help in simple form
asked by sophie 
I need an answermolecular/electron geometry
Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd
asked by Kate 
Algebra
I need toIs the following pair of lines parallel or perpendicular? Prove your answer. 2y – x = 2 y + 2x = 4 can you explain how to break this down ...
asked by Donna 
math
If 3/8 of the class was absent what % of the class was present?
asked by Vic 
algebra
It has been found that adult height can be accurately predicted by taking specific measurements of children and multiplying them by a scale factor obtained by analyzing large representative samples. Twelveyear old Jean reads that female height will be
asked by jayne 
physics
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side
asked by KIKSY 
math please help
A (4,3) B (3,3) c (4,5) Find the slope of AB, BC, and AC. Find the tangent of each angle and their angle measure (inv. tan) using: tan of an angle =m2m1/1+m1m2 m2 being the slope of the terminal side (measuring counterclockwise) the triangle looks like
asked by hw 
english
compare and contrast the representation of the small town characters in Ethan frome and our town. do the authors depict their characters in a similar way or different? how do these depesitions influence the stories? To me both characters in both books are
asked by sam 
WRITING(CHOCOLATE BAR)
our goal is to pick a candy. My candy i picked was Mars Bar. The teacher told us to make 3 claims of our chocolate and then beside those 3 claims we have to write 3 evidences. The 3 evidences are the things im having trouble on. I have my 3 claims already
asked by Monica 
math(geometry
W and Z are coordinates of OR and ST respectively. In parts (a)(c) find coordinates of W and Z
asked by Samantha 
English
can you check my grammar and content? i need to submit this paper for an exam and want to get a good grade.
asked by TJ 
math
if m
asked by Alexis 
mathgeometry
Given that 5y=25x how do you get the ratio of x to y in simplest form?
asked by Jesika 
Math
the diameter of a quarter is close to 25 millimeters. what is the length of a row of quarters whose total value is $10.00
asked by Anonymous 
math
what are 12 numbers with a minimum of 50 a maximum of 57 a mode of 56 and a median of 54
asked by Kody 
math
In the 1933 movie, Kong was about 20 feet tall and weighd 38 ton. In the 2005 version, he was 25 feet tall and weighed 8,000 lbs. Does the data on the weight of Kong make sense for these heights?
asked by anonymous 
MATH
1.Graph the function f(x) = (x + 3)3 by hand and describe the end behavior.
asked by jenni 
general science
Increasing depths in the ocean causes a what in sunligh. Increasing depths in the ocean causes a what in pressure. Producer in the upper three zones of the ocean use what while producer in the lower ocean zones use what to generate nutrients to support the
asked by kendra` 
geometry
A triangle has side lengths of 3in, 4in, and 6in. The longest side of a similar triangle is 15 in. What is the length of the shortest side of the similar triangle?
asked by Anonymous 
TO MS. SUE Writing (CHOCOLATE BAR)
FOR THE CARAMEL, ARUSHI, TOLD ME THAT CHOCOLATE AND CARAMEL MAKE A GTEAT COMBO. IS THAT OK WITH U?
asked by Monica 
chemistry
what is the name of the compound made ofrom chlorine and magnesium
asked by cynthia 
math
How much is 4.36 meters in centimeters?
asked by mariana 
Language Arts
Is my first paragraph of the essay good? Correct some mistakes. The Lightning Thief book and movie are different and same in many ways. The book of the Lightning Thief is more interesting and detailed for most people who read the book and watched the
asked by Justin 
Simple Harmonic Motion
have performed an experiment of simple harmonic motion and the values I got Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having
asked by Abi 
math
what multiplication fact can be found by using the arrays for 2X9 and 5X9?
asked by Brenda 
Math Statistics
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. *
asked by Tammy 
Chemistry
Given the following equation: 2KClO3> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?
asked by Nick 
science
If you walk 100 meters forward and then 35 meter backward what is distance traveled and your displacemaent ?
asked by taylor 
science 4th grade
How are the properties of the compound water different from the properties of the elements in it?
asked by jimmy 
Social Psychology
What are two advantages and two disadvantages of collectivism and individualism? I am having a hard time finding the answer to this. Please help....Thanks!
asked by Mandy 
Analytical Mechanics
A car traveling at 100Km/hr smashes into a concrete abutment. Show that the collision is the equivalent to driving off the top of a ten story building. Allow 4 meter per story and neglect air resistance. Next, find the equivalent vertical height to
asked by Garrett 
Calculus
Mt+1= 0.75Mt+2 give the solutions of the dynamical system with Mo=5 i.e determine Mt as a function of t
asked by Anonymous 
geometry
what are the relationships between corresponding sides perimeters and areas ofsimilar figures how are the characteristics of similar figures applied in problem solving how ara these relationships applied in solving real world situations
asked by jonathan andres 
Math
A girl lets out 50 yards of kite string while flying a kite. The distance from a point on the ground directly under the kite to where the girl is standing is 30 yards. If the girl holds the string 3 feet from the ground,how high is the kite? Assume the
asked by Monica 
physics
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side
asked by APpreciative student 
math
the capacity of a measuring pitcher is 96 fluid ounces.how many quarts can the pitcher hold?
asked by alexis 
math
wht is the function rule that represents the relationship found in the following ordered pairs (5,22),(10,23),(4,5),(7,28),(6,11)
asked by Anonymous 
language arts peer edit
The Lightning Thief book and movie are different and same in many ways. The book of the Lightning Thief is more interesting and detailed for most people who read the book and watched the movie. The movie sometimes has things that the book doesn’t have
asked by Justin 
English
Were are the nouns in this sentence? Today.in the united states, cell phones are a very popular item.
asked by Marcos 
chemistry
Consider the following multistep reaction: C+D> CD2 (SLOW) CD2+D>CD3 (FAST) C+3D>CD3 (OVERALL) Based on the mechanism determine the rate law for the overall reaction??
asked by Candice 
Probability
How do I determine the probability of selecting a card greater than 9 or a black card?
asked by Madison 
college chemistry
Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature: CaCO3(s) → CaO(s) + CO2(g) In one particular reaction, 40 g of CaCO3 is heated at 750°C in a 5.0 L vessel. The pressure of
asked by Liz 
math
how to convert 4.50 cubic feet to milliliters
asked by les 
Physics
An aluminum block slides along a horizontal surface. The block has an initial speed of 11.6 m/s and an initial temperature of 10.7°C. The block eventually slides to rest due to friction. Assuming all the initial kinetic energy is converted to heat energy
asked by Gerry 
physics
A magnetic field has a magnitude of 1.20 103 T, and an electric field has a magnitude of 5.50 103 N/C. Both fields point in the same direction. A positive 1.8µC charge moves at a speed of 2.60 106 m/s in a direction that is perpendicular to both fields.
asked by aml 
Algebra 1
Graph the system of inequality x+2y 0. Thank you Can you just tell give me the answer and where in the region I should shade it and If it has a solid line or dotted one? Please, I think I will be ok with that. Thank you.
asked by Esther 
physics homework 1
A 4.67kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.446. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b)
asked by Nerdy Nancy 
homework physics 2
An ice skater is gliding horizontally across the ice with an initial velocity of +5.33 m/s. The coefficient of kinetic friction between the ice and the skate blades is 0.0988, and air resistance is negligible. How much time elapses before her velocity is
asked by Nerdy Nancy 
homework physics 3
Air rushing over the wings of highperformance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps cars hug the track more securely. The coefficient of static friction between the track and the tires of
asked by Nerdy Nancy 
physics homework 4
A 1.60 kg win bottle is lying horizontally in a rack. The two surfaces on which the bottle rests are 90.0° apart, and the right surface makes an angle of 45.0° with respect to the horizontal. Each surface exerts a force on the bottle that is
asked by Nerdy Nancy 
PHYSICS HOMEWORK 5
A circus clown weighs 875 N. The coefficient of static friction between the clown's feet and the ground is 0.630. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that
asked by Nerdy Nancy 
Physics  Please Help
Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is
asked by Emily 
physics homework 6
A damp washcloth is hung over the edge of a table to dry. Thus, part (mass = mon) of the washcloth rests on the table and part (mass = moff) does not. The coefficient of static friction between the table and the washcloth is 0.395. Determine the maximum
asked by Nerdy Nancy 
physics homework 7 :)
The weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord.
asked by Nerdy Nancy 
physics homework 8!
To hoist himself into a tree, a 72.0kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 365 N. Neglect any friction between the rope
asked by Nerdy Nancy 
World History
Why was Egypt important to Europeans in the nineteeth century? Great Britain was determined to have complete control of the Suez Canal. Why? How did European lead to the Boer War? How did the French system of colonial rule differ from that of Great
asked by Erin 
Biology
Excluding the echinoderms, all the animals in group 2 (birds, mammals, fish, amphibians) have which of the following characteristics in common? A)protostome embryo, coelom, radial symmetry, dorsal nerve cord B)protostome embryo, no coelm, bilateral,
asked by Dante 
Biology
All organisms in group 2(birds, fish, mammals, echinoderms, amphibians) except _______ are thought to share a common ancestor that possessed many of the same characterisitcs as the modern lancelets. A)echinoderms B)fish C)amphibians D)birds E)mammals
asked by Dante 
Biology
If bird DNA is more similar to crocodile DNA than turtle DNA is to crocodile DNA, then... A)birds should be included amoung reptiles B)turtles and birds should be excluded from the reptiles C)the reptiles should be replaced by several new classes D)each of
asked by Carly 
pre cal
Tamara is flying in a hot air balloon. The hot air balloons is flying at an altitude of 1100 feet. The ground distance to the landing site is 1400 feet. What is Tamara's angle of depression to the landing site? What is the actual distance between the hot
asked by karina 
pre cal
A submarine is traveling parallel to the surface of the water of the water 492 feet below the surface. The submarine begins a constant ascent to the surface so that it will emerge on the surface after traveling 3974 feet from the point of its initial
asked by karina 
pre cal
A submarine must descend 516 meters to explore a shipwreck. The submarine begins a constant descent to the shipwreck so that it will reach the shipwreck after traveling 2976 meters from the pint of its initial descent. What angle of descent did the
asked by karina 
Science
in a true solution, the dissolved particles (1)are visible to the eye (2)will settle out on standing (3)are always solids (4)cannot be removed by filtration
asked by lisa 
math
wHAT IS 10.000@2.88%
asked by Anonymous 
pre cal
A boat has passed directly over a submarine as pictured below. The sub is running at a depth of 588 ft, and the angle of depression from the boat to the sub is 35 degrees. Find the distance, x, from the boat to the submarine.
asked by karina 
pre cal
If an 22inch tire rotates 40 times per 2 minute, determine th elinear and angular speed of the tire.
asked by karina 
Algebra
What is the area of a circle whose diameter is given by the expression 10x?
asked by Bob 
AP Physics PLEASE HELP DUE TOMORROW
Consider the freight train. Suppose 15 boxcars pass by in a time of 14.0 s and each has a length of 14.0 m. (a) What is the frequency at which each boxcar passes? (b) What is the speed of the train?
asked by Sarah 
Physics
Two charges q1 and q2 when separated by a distance r1 = R produce a force F1on each other. If the separation is increased to r2 = 2R, what is the new force F2 in terms of F1?
asked by Alex 
chemistry
vinegar is made by adding 33 g of acetic acid to 625 if water what is the percent by mass of acetic acid in this solution of vinigar
asked by Linda 
Physics
An electron experiences a force of 12 mN in the positive xdirection in an electric field. What is the magnitude and direction of the electric field?
asked by Sam 
Calculus
To estimate the height of a bridge, a man drops a stone into the water below. How high is the bridge (a) if the stone hits the water 3 seconds later? (b) if the man hears the splash 3 seconds later? (1080 ft per second for speed of sound)
asked by Akira 
Calculus 3
Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use
asked by Phil 
geometry
why is a original image and a similar image are related
asked by arifa 
Physics
Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is
asked by Em 
College Physics
An athlete in a competition needs to get from point A to another point B directly across from a river. He can swim in stationary water at a speed of 2.0 mi/h, and he can run at a speed of 5.0 mi/h. If the river does not flow, then to get from A to B he
asked by Jessica Lopez 
algebra
35+ 6 x < 20 2
asked by sue 
Math
How many combinations are there when you can buy four books from a choice of 6 books>
asked by Rena 
trigonometry
can you correct the rest for me please? Express each as a function of theta: a. sin (270deg + theta)= cos theta b. cos (pi + theta)= cos theta c. tan (810 + theta)= ????? d. sin (theta  180)= sin theta
asked by Anonymous 
Calculus
the equation represents for a recurrence relation, Mt+1= 0.75Mt+2 with Mo=5
asked by Anonymous 
CRIMINAL JUSTICE
Discuss the three types of management styles that are reviewed in your course materials (Scientific Management, Human Relations Management, and Systems Management). * Which style do you believe would be the most effective to use in the criminal justice
asked by dEAN 
Chem 219
If 48.9g of barium chloride dihydrate, BaCl2.2H20, was treated with excess silver nitrate solution. (show formula) a). how many moles of silver chloride precipitated? b). how many grams of silver chloride precipitated? thank you!
asked by Chels 
poetry
whats the meaning of the poem SOMEWHERE TO PARIS BY RICHARD BLANCO?
asked by sandy 
chemistry
2.36 L of an aqueous solution containing 39.0 g of KCl dissolved in pure water is prepared. The molarity of the solution is?
asked by Jen 
Chemistry
FeSCN2+ > Fe3+ + SCN Solution is initially dark red. If some Ag+ is added to form AgSCN. what happens to position of equilibrium? what happens ot the color?
asked by Grace 
Chemistry
we created a nickel coordination compound made of nickel and chlorine and we used silver nitrate to titrate it. If the silver nitrate solution had been exposed to light and reacted with chlorine, would the calculated percent of nickel been higher or lower
asked by Chelsea 
Chemistry 219
An amount of 1.250g of an alloy (90% Ag, 10% Cu) was treated with HNO3 and H2SO4 to form Ag2SO4 and CuSO4. The solution was then treated with Cu wire to precipitate silver. The resulting solution was treated with excess zinc to precipitate copper. (show
asked by Anonymous 
physics
A student applies an upward force of 49 N to a 5.4kg physics textbook. Find the book’s acceleration (positive for up, negative for down).
asked by Fred