Questions Asked on
February 12, 2012

Chemistry
The halflife for the process 238 U > 206 Pb is 4.5*10^9 yr. A mineral sample contains 66.0 mg of 238 U and 16.0 mg of 206Pb. What is the age of the mineral?
asked by gary 
physics
When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44cm. What is the magnitude of the net force acting on the ball?
asked by Natasha 
Physics
At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 810m/s^2 and the vertical or y component of its acceleration is 110m/s^2. The ball's mass is 0.43kg. what is
asked by Natasha 
Physics3
Two charged particles of equal magnitude (+Q and +Q) are ﬁxed at opposite corners of a square that lies in a plane (see ﬁgure below). A test charge −q is placed at a third corner. If F is the magnitude of the force on the test charge due to only one
asked by jc 
Chemistry
A solution of 1.50g of solute dissolved in 25.0 mL of H2O at 25C has a boiling point of 100.95C. What is the molar mass of the solute if it is a nonvolatile non electrolyte and the solution behaves ideally. (d of H2O at 25C=0.997g/mL)?
asked by Tori 
Chemistry
A 200. gram sample of a salt solution contains 0.050 grams of NaCl. What is he concentration of the solution in parts per million? a)50. ppm b)250. ppm c)2.5 * 10^4 ppm d)5.0 * 10^4 ppm
asked by Tamara 
Physics 2
The drawing shows four insulated wires overlapping one another, forming a square with 0.050m sides. All four wires are much longer than the sides of the square. The net magnetic field at the center of the square is 91.5 µT. Calculate the current I.
asked by Anne 
consumer math
Jim opened an account with $400. The account pays three percent quarterly. How much is in the account at the end of two years? Round to the nearest dollar. (Points : 1) 5. Use this table to answer questions 5 through 8. Principal Rate Compounded Time Final
asked by tina 
physics
A golf ball is struck with a five iron on level ground. It lands 92.7 m away 4.40 s later. What was (a) the direction and (b) the magnitude of the initial velocity?
asked by jessica 
electrostatic physics
2. At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.9 × 10^15 m. What is the magnitude of the repulsive force pushing these two spheres apart? The value of
asked by jc 
calculus
2. Let f(x) = ksin(kx), where k is a positive constant. Find the area of the region bounded by one arch of the graph of f and the xaxis
asked by Yoona 
MATH
Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x3 and ST=2x+6.
asked by Debbie 
Math
A school is fencing in a rectangular area for a playground. It plans to enclose the playground using fencing on three sides (One length is a wall) The school has budgeted enough money for 75 ft of fencing material and would like to make a playground with
asked by Jane 
Physics
Jane and John, with masses of 50 kg and 60 kg, respectively, stand on a frictionless surfact 10 m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.92 m/s^2 toward him. (a) What is John's acceleration? (b) If the
asked by Katelyn 
electrostatic physics
Two charged particles of equal magnitude (+Q and +Q) are ﬁxed at opposite corners of a square that lies in a plane (see ﬁgure below). A test charge −q is placed at a third corner. If F is the magnitude of the force on the test charge due to only one
asked by jc 
chemistry
calculate the freezing point of a .05500 m aqueous solution of NaNO3
asked by Cece 
ap history
was the new Deal essentially a consevative attempt to save American capitalism from collapse, a radical change in traditional American antigovernment beliefs, or a modrate liberal response to a unique crisis? i tried reading but kind of confuse but im
asked by heather 
MATH
find y if s is the midpoint of segment RT, T is midpoint of segment RU, RS = 6x+5, ST=8x1, and TU=11y+13.
asked by Debbie 
math
If a tree is 10 feet tall after two years and 25 feet tall after 5 years, find the rate of change of growth of the tree if y is the height in feet and x is the number of years. Be sure to give correct units.
asked by Don 
Chemistry!
Consider the equilibrium system: N204 (g) = 2 NO2 (g) for which the Kp = 0.1134 at 25 C and deltaH rx is 58.03 kJ/mol. Assume that 1 mole of N2O4 and 2 moles of NO2 are introduced into a 5 L contains. What will be the equilibrium value of [N204]? Options
asked by Vee 
college physics
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip. If r = 19.0 m, how fast is
asked by Anonymous 
Chemistry Help Please :)
I'm stuck on how to do these 4 problems concerning Chemical Equilibriums. When varsol and iodine/pottasium iodide solutions are mixed, the two phases form.. phase A (top) would be pink and phase B (bottom) would be brown. What are the colours in each
asked by Alexis 
chemistry
Assume the density of aqueous HCl is the same as water (1.0 g/mL) and use the densities of ethanol (0.789 g/mL) and water as well as the actual amount of recrystallization solvent used to calculate the mass of recrystallization solvent.
asked by Mike 
physics
e4) a rope applies a horizontal force of 190 N to pull a crate a distance of 2 m across the floor. A frictional force of 50N opposes this motion a) what is the work done by the force applied by the rope? b)what is the work done by the frictional force?
asked by Anonymous 
linear algebra
Find x such that the matrix is equal to its own inverse. 3,x 2,3
asked by mando 
chemistry
if not all the magnesium reacts, will the reported magnesium to oxigen ratio be too high or too low?
asked by bailey 
Physics
A turntable of radius 2m rotates freely about a fixed vertical axis. A child 19 kg is standing on the turntable right at the outer edge and the system is initially rotating at an angular speed of 0.5 rev/s. The child then moves to position 1m from center
asked by Brittany 
British Literature
What figure of speech is used in this statement: "Good Mistress Accost, I desire better acquaintance."
asked by valerie 
Physics
A lightrail train going from one station to the next on a straight section of track accelerates from rest at 1.1 {\rm m/s}^2 for 20 {\rm s}. It then proceeds at constant speed for 1100 {\rm m} before slowing down at 2.2 {\rm m/s}^2 until it stops at the
asked by Susan 
psychology
Conditional positive regard can be damaging because _______________. Answer A. the negative responses of others can lower selfesteem B. there are limitations placed on the creative personality C. anxiety is produced by the discrepancy between real self
asked by Anonymous 
sultan abubakar collage
A industrial raw material has the following composition by mas: iron = 28.1%; chlorine =35.7%; water of crystallization = 36.2%. Calculate the formular for the material. [H= 1.00, O=16.0, Cl =35.5, Fe=56.0].
asked by alameen 
calculus
5. If f (x)=(2x+1)^4 then the 4th derivative of f(x)=0 at x = 0 is..
asked by Yoona 
Math
Hayley has 16 square boxes to make an array of rectangular shapes on a grid. Harry says if she uses 19 square boxes she will get more arrays. Do you aree or disagree with Harrys' claim? Explain your answer using prime and composite numbers. Use the
asked by Parker 
healthcare fiancare
HINT: 6% X $1,000,000 – {20% X ($1,000,000 – (6% X $1,000,000))} = 6% X $1,000,000 – {20% X ($1,000,000  $60,000))}= 6% X $1,000,000  {20% X $940,000}= 6% X $1,000,000  $188,000 = $60,000  $ 188,000= $128,000 A) The interst due on a 10% loan of
asked by patricia 
statistics
Find the mean of the given probability distribution. The number of golf balls ordered by customers of a pro shop has the following probability distribution.
asked by mary 
College Chemistry
If the density of cylinder 1 is 3.55 , what is the density of cylinder 2? (The masses and volumes of two cylinders are measured. The mass of cylinder 1 is 1.35 times the mass of cylinder 2. The volume of cylinder 1 is 0.792 times the volume of cylinder 2.)
asked by Alex 
SCIENCE
LIST TWO ENVIRONMENTAL CONDITIONS THAT MIGHT LEAD TO THE DISAPPEARANCE OF MANATEES FROM FLORIDA'S RIVERS? PLEASE HELP.
asked by KAYLA 
Advanced Maths (Vectors) AQA Level, please help?
A boat which can travel at 5m/s in still water is crossing a river 200 m wide.the rate of the flow of the river is 2 m/s assumed uniform at every point in the river. Point A and B are directly opposite to each other across the river. a) If the boat leaves
asked by jat 
electrostatic physics
Four point charges are placed at the four corners of a square. Each side of the square has a length L. Find the magnitude of the electric force on q2 due to all three charges q1, q3 and q4 for L = 1 m and q = 1.55 C. Answer in units of N
asked by jc 
physics
a .20 kg ball on a string is whirled on vertical circle at constant speed. When the ball is at 3:00 position, tension is 16 N. a) is centripetal force acting on ball the same at each point on the circle? b) when the ball is at 3:00, what is proving the
asked by Sejul 
Math
it takes Lucy 7 minues to cut a 20 yard by 1yard roll of fabric into 14 equal pieces. How many minutes would it ake her to cut the fabric into 25 equal pieces?
asked by Denise 
Advanced Maths (Vectors) AQA Level, please help?
An aircraft have a speed in still air of 400 km/h. A wind is blowing from the south at 80 km/h. The pilot wishes the aircraft to travel due east. Find the direction in which aircraft should be steered and the speed at which it will travel.
asked by jat 
physics
From what distance can these light bulbs be marginally resolved by a small telescope with a 6.0 cmdiameter objective lens? Assume that the lens is limited only by diffraction and wavelength = 600nm
asked by ryan 
Physics4
2. At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.9 × 10^15 m. What is the magnitude of the repulsive force pushing these two spheres apart? The value of
asked by jc 
calculus
The Revenue from the sale of x units of a product is represented by the following formula: R = 20(3x + 1)^1 + 50x  17 dollars. Find the Marginal Revenue when 20 units are sold?
asked by Carol 
Physics
A girl places a stick at an angle of 60.0° against a flat rock on a frozen pond. She pushes at an angle and moves the rock horizontally for 2.00 m across the pond at a velocity of 4.00 m/s and a power of 160.0 W. What force did she apply to the stick? How
asked by Pat 
Physics II
two perpendicular, long, straight wires, both of which lie in the plane of the paper. The current in each of the wires is I = 4.5 A. In the drawing dH = 0.13 m and dV = 0.48 m. Find the magnitudes of the net magnetic fields at points A and B. The drawing
asked by Mareena 
Physics
Give an example of a vertical motion with a positive velocity and a negative acceleration. b. Give an example of a vertical motion with a negative velocity and a negative acceleration.
asked by Susan 
Chemistry
1) Benzene freezes at 5.45 degrees celsius. The Kf for benzene is 5.07C/m. What would be the freezing point of a 0.210m solution of octane in benzene? I am not sure how to start this. I know the equation for freezing point is Kfp * m solute.
asked by Hannah 
Physics2
A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2
asked by jc 
physics
If You did 150 joules of work lifting a 120 newton backpack.A) How high did you lift the backpack?B)how muck did the backpack weigh in pounds?
asked by lion 
Geometry
Harris is planting a rectangular garden with an area of 48 square feet . He is also putting a fence around his garden . How should hr arrange his garden so he can buy the least amount of fence?
asked by Anonymous 
Math
Nico is saving money for his college education. He invests some money at 5%, and $2300 less than that amount at 3%. The investments produced a total of $163 interest in one year. How much did he invest at each rate?
asked by Sarah 
Chemistry 101
A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.60g/cm cubed. What is the percent of copper and the percent of lead?
asked by Haley 
SCIENCE
Two 2.6 kg physical science textbooks on a bookshelf are spaced 0.22 m apart. What is the magnitude of the gravitational attraction between the books?
asked by Anonymous 
Physics
An image of the moon is focused onto a screen using a converging lens of focal length f= 35.3 cm. The diameter of the moon is 3.48×106 m, and its mean distance from the earth is 3.85×108 m. What is the diameter of the moon's image?
asked by Help ! 
physics
11. You did 150. J of work lifting a 120.N backpack. a. How high did you lift the backpack? b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)
asked by lion 
electrostatic physics
A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2
asked by jc 
statistics
Now, let’s look at a situation in which we compare three college math teachers to each other with respect to how interested they keep their students. The study was conducted among freshmen enrolled in an introductory course. The unit was quadratic
asked by John 
Chem
a solution containing 100g of unknown liquid and 900g water has a freezing point pf 3.33 C. given kf=1.86 degrees c for water, the moelcular weight of the unknown liquid is what?
asked by Court 
Economics
Please check my work! Thanks! 1. The employees of Abs “R” Us, which includes 12 fitness parlors in and around the metro area, feel they can improve the performance of the company. They decide to pool their resources to purchase the company. This would
asked by Suli 
chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
asked by Laura 
artwork critique
this be the last one Judgement : Do you like it, and is it successful? how well you think you have done with materials used? is it original, innovative, and daring? does the artwork make you think beyond the image? is the artwork successful? how? do you
asked by Mohammad 
Chemistry
How many grams of water are needed to dissolve 27.8g of NH4NO3 (80.0 g/mol) in order to prepare a 0.452 m (molal) solution? 27.8g / 80g/mol X 0.452 = 0.157 Is this correct?
asked by Hannah 
chemisry
A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. 100 ml of a 0.1M solution of the above acid is titrated with 0.1 M
asked by ashley 
physics
under the influence of its drive force, snowmobile is moving at constant velocity along a horizontal patch of snow. When drive force is shut off, snowmobile coasts to a halt. a) During the coasting phase, what is the net external force acting on the
asked by Sushmitha 
algebra
the apothem of a regular polygon is the distance from the center of the polygon to a side. Explaiin how to derive a formula for the area of a regular polygon using the apothem.
asked by lucy needs help now 
Chemistry
Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2
asked by Hannah 
Phsyicssss PLease helppp ASAP
A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the
asked by Anonymous 
Physics1
Four point charges are placed at the four corners of a square. Each side of the square has a length L. Find the magnitude of the electric force onq2 due to all three charges q1, q3 and q4 for L = 1 m and all q = 1.55 C. Answer in units of N
asked by jc 
PHYSICS Please Help :(
A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the
asked by Coco 
Physics
A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in
asked by Anonymous 
Physics (PLEASE HELP)
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 7.0 km away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5.00 102 /km. (a) Find the power lost in
asked by DCM 
percentage
Karen took 1h 45m to drive from town a to town b.she took another 25m to drive town b to town c.after that,she drove back to town a.the journey from town a to town c and then back to town a took 3h 35m. find the percentage of the time she spent driving
asked by Da S 
artwork critique
Interpretatin: what does the artwork mean? what you trying to say? who artwork intended for? you trying to teach a lesson? does artwork speak to you? how? This artwork mean to search for yourself, how you really be. Artwork intended for all people in world
asked by Mohammad 
Physics
A 1.26 kg block is held against a spring of force constant 2.0 103 N/m, compressing it a distance of 0.18 m. How fast is the block moving after it is released and the spring pushes it away?
asked by BV 
Chemistry
If 38.33 mL of a standard 0.1667 M Ba(OH)2 solution is required to neutralize exactly 52 mL of H2SO4, what is the molarity of the acid solution?
asked by Beatriz 
physics
A car, mass  1950 kg, accelerates at +2.33 m/s (squared). Find the magnitude of the normal force acting on the car. If later, when the car is cruising at 26.5 m/s, the driver applies a force of magnitude 10,000 N to stop the car. What is the distance it
asked by jane 
Physics
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 78 N the acceleration of the box is 0.46 m/s2; when you increase the force to 86 N the acceleration is 0.76 m/s2. (a) Find the mass of the box.
asked by Anna 
Physics
A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in
asked by Anonymous 
math
How many different rectangular prisms can be made using 36 cubes if the height is 2 cubes?
asked by Taylor 
Chemistry
Calculate the moles of hexane required to form 150 g of carbon dioxide. Please show all working. Thank you.
asked by Megan 
Chemistry
How to calculate the molarity of phosphoric aci9d in a solution that is 84% by mass phosphoric acid and a density of 1.87 g/ml
asked by Cee 
physics
A car is traveling at a constant speed along road ABCDE. (Curve BC where Bis beginning of curve and C is the end of the curve is in the shape of a "backward C." C is then the beginning of another curve and D is the end of the same curve in the shape of a
asked by Nabil 
Chemistry
Which aqueous solution below is expected to have the lowest freezing point? Assume 100% dissociation for ionic species. 1)0.25m MgBr2 2)0.30m Na2SO4 3) 0.50m KCl 4) 1.0m sucrose 5) 0.40m Cr(NO3)3 I think that the answer is 0.30NaSO4 but I am not positive.
asked by Hannah 
Physics
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
Physics
A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in
asked by Anonymous 
algebra
Explain the words relation and function. Include in your explanation how the meanings of the two words differ. Give a realworld example of a relation that is not a function. Is it possible to give an example of a function that is not a relation? If so,
asked by Lucy needs help now 
physics
A tractor of mass 5000kg is used to tow a car of mass 2500kg.The tractor moved with a speed of 3meter per secound.Just before the towing rope cuts,calculate (a)the speed of the tractor immediately the rope cuts
asked by Fatimah 
chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
asked by Laura 
chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
asked by Laura 
Math
At a summer camp there are 60 girls and 30 boys. Twenty percent of girls and 40% of boys passed the swimming test. What percent of the campers passed. Please show working.
asked by Devon 
MATH
If 2 angles are adjacent, can it also be said they form a linear pair? Why?
asked by James 
linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=1 B)x+2y=10 C)x+2y=3 x2y=3 x2y=6 x2y=0
asked by mando 
CHEM
Cl2 + SO2 + 2 H2O > 2 Cl^1 + SO4^2 + 4 H^1+ 1) Which element is oxidized ? (simply write the element symbol; e.g. Fe, O) 2) How many electrons are lost by each atom ? (1, 2, 3) 3) Which element is reduced ? 4) How many electrons are gained by each atom
asked by TARA 
physics
An electron is a subatomic particle (m = 9.11 1031 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of
asked by Natasha 
Advanced Maths (Vectors) AQA Level
Triangle ABC with D, E and F the midpoints of BC, AC, and AB. G is the midpoint of AD such that the ratio AG:GD =2:1, VECtors AB =p and BC =q Prove that B, G and E are collinear. prove the same results for point C, G and G
asked by Jat 
statistics
Five independent samples, each of size n, are to be drawn from a normal distribution where sigma is known. For each sample, the interval (ybar  0.96 * sigma/sqrt(n), ybar + 1.06 *sigma/sqrt(n)) will be constructed. What is the probability that at least
asked by Bill 
statistics
. A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its
asked by John 
Physics
The wire in the drawing carries a current of 14 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 33 A. Use Ampere's law to find the magnitude of the magnetic field at a distance of r = 1.0 m
asked by Mareena 
Chemistry
How much carbon dioxide has to be bubbled into aqueous sodium hydroxide to obtain a solution containing 3.5 mol of sodium hydrogen carbonate?
asked by Amanda 
math word problem
lexi and maria had $250.oo altogether. After lexi spent 2/5 of her money and Maria spent $40.00 they had the same amount of money left.How much money did lexi have in the beginning?
asked by joe 
Chemistry
Cobalt60, which undergoes beta decay, has a halflife of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co60? What is the activity of the sample in Bq?
asked by Steven 
algebra
Explain how you find orderedpair solutions of the equation 3x  5y =15, and then find two such solutions.
asked by lucy needs help now 
Finance
Item Total assets $10,000,000 Total equity (all common) 9,000,000 Total debt 1,000,000 Annual interest 100,000 Total sales $25,000,000 EBIT 6,250,000 Earnings available for common stockholders 3,690,000 I am trying to find the values for the: (1) Operating
asked by Advice 
Finance
Your firm is considering the following three alternative bank loans for $1,000,000: A) 10 percent loan paid at year end with no compensating balance. B) 9 % laon paid at year end with a 20% compesating balance. C)6% loan that is discounted with a 20%
asked by patricia 
Chemistry
If all ionic substances completely ionized, the aqueous solution with the lowest freezing point would be 1)0.25m NH4NO3 2)0.30m BaCl2 3) 0.35m LiBr 4) 0.50m Sucrose 5) 0.40m MgSO4 I know that i have to multiply m and i to find the largest delta T. I am
asked by Hannah 
physics
A uniform horizontal rod of mass 2.4 kg and length 0.86 m is free to pivot about one end as shown. The moment of inertia of the rod about an axis perpendicular to the rod and through the center of mass is given by I = (m*l^2)/12 If a 6.8 N force at an
asked by Latane 
SCIENCE3
Identify one external feature of the manatee that allows it to live in water. Please help me with this one too!?
asked by KAYLA 
linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=1 B)x+2y=10 C)x+2y=3 x2y=3 x2y=6 x2y=0
asked by mando 
linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=1 B)x+2y=10 C)x+2y=3 x2y=3 x2y=6 x2y=0
asked by mando 
Physics
A 343kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3N force directed 16.2° north of east (due to an
asked by Natasha 
Physicsss helppp pleaseee
A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the
asked by Anonymous 
Chemistry
A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be 1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this
asked by Hannah 
PHYSICSSS PLEASE HELP ANYONE
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
PHYSICS
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
Statistics
On a chemistry exam, Student A scored a 81 and Student B scored a 70. The mean for the class was 75 and the standard deviation was 3.8. What percentage of students scored in somewhere in between Student A and Student B?
asked by robyn 
English
Thank you very much for encouraging me to go on with my work! Here are some more sentences I'd like you to check. Can I start my exercise with: Fill in the blanks with an appropriate preposition. Complete the sentences using an appropriate preposition. 1)
asked by Henry2 
science
identify onbe external feature of the manatee that allows it to live in water.
asked by Matt 
physical
Consider a pulse of laser light aimed at the moon that bounces back to earth. The distance between Earth and Moon is 3.8 x 10 (small eight above) m. Show that the roundtrip time for the light is 2.5 s.
asked by Julia 
algebra
If you cut a piece of paper to form a triangle shape, and tear off the three corners of the triangle and then put the three corners together what will you see? Please describe. What mathematical truth does this activity illustrate?
asked by Lucy needs help now 
Math 208
The number of state federal inmates in millions during year x, where x is greater than or equal to 2002 can be approximated by the following formula N=0.04x78.96 Determine the year in which there were 1.2 million inmates
asked by Anonymous 
SCIENCE
Determine the mass of a person on the moon whose mass on Earth is 70 kg Determine the weight of a person on the moon whose weight on Earth is 148 lbs. How is the mutual gravitational force affected by changing the separation distance between two 1.0 kg
asked by Anonymous 
Satistics
**I don't want the answer, I want to know how to set the problem up and the formula that I need to use. I am online with a tutor right now, and they can't help me. :( The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in
asked by Shannon 
physics
A circuit consists of a 12.0 V battery connected to three resistors 44 ohms, 15 ohms and 120 ohms in series. A)Find the current that flows through the battery. B)Find the potential difference across the 44 Ohms resistor. C)Find the potential difference
asked by jazz 
Advanced Maths (Vectors) AQA Level, please help?
Two ships, A and B st out from port O simultaneously. A travels due north at 16 km/h, B due east at 13 km/h. The ships radio have a rang of 120. For how long would they remain in contact if B had travelled northeast
asked by jat 
math
My niece has asked me to help with a math project. Maybe I am putting too much into it but I do not understand it. Any help would be great. It is a "Tissue Box Project". Any ideas?
asked by Buddy 
Physics
A horizontal wire of length 0.48 m, carrying a current of 6.8 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 19° it experiences a magnetic
asked by Anne 
chemistry
In the reaction of N2 and H2 to produce NH3, how many moles of N2 will produce 25.9 moles NH3?
asked by Anonymous 
science
Compare optical telescopes and radio telescopes. What are the advantages of using a radio telescope over an optical one? All I can think of is, that radio telescopes can be used in any form of weather and optical telescopes can't. I'm not sure if that is
asked by Bree 
FACS Project Help!
I have this project for facs (family and comsumer science) and I really need help. UNIT: Personal Development Topic: The One & Only You! Lesson: The UNIQUE you! Review Question Due Date: 2/15/12 1. Identify  What are four (4) influences that give you a
asked by Laruen 
chemistry
A student is given 3 beakers: Beaker 1 50.0 ml of a solution produced by dissolving 6.00 grams of a weak monoprotic acid ,HX, in enough water to produce 1 liter of solution. The empirical formula of HX is CH2O. The solution contains 3 drops of
asked by ashley 
math
mr spoke is a salesman at pop's cycle shop. each month he earns 800 plus 7% of his total monthly sales. how much did he earn last month if his sales totalled 9200
asked by ashley 
PHYSICS CAN ANYONE HELPPPP PLEASE
A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?
asked by Anonymous 
math
Math question. Two part. A am rifle bullet accelerates from 0 to 1000 m/s ( about 2240 MPH) in 1/1000 second when fired. What is the avg acceleration of the bullet in m/s2? If this rate of acceleration could be somehow maintained, how long would it take
asked by bubba 
6th grade science
why would a shredded carrot turn the softest when it is sitting on top of a table out in the open air compared to the carrot in water and the carrot in salty water?
asked by kate 
POETRY
Who is the intended audience for the poem Flesh and Spirit by Anne Bradstreet? I also need an example of contemporary relevance for the poem. Help please?
asked by Paige 
Math
A test has 125 items. Each correct answer earns 1point and 65% is a passing grade. If you get 42 answers wrong will you pass? Show working
asked by Devon 
math
A triangular pyramid has a triangle base of 24 cm, triangle height of 16 cm, and a pyramid height of 14 cm. what is the volume of triangular prism.
asked by Hanna 
Physics
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
Physics
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
algebra
The temperature F, in degrees Fahrenheit, that corresponds to a temperature C, in degrees Celsius, is given by the equation F = (9/5)C + 32. If you graph this equation for 0 < (the sign has a _ below it to mean or equal to) C < (the sign has a _ below it
asked by Lucy needs help now 
PHYSICSSSSSS help please
A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a
asked by Anonymous 
economics
For the total variable cost (TVC), draw a positive total fixed cost (TFC) and total cost (TC) curves. Then derive the associated marginal cost (MC), average total cost (ATC), average variable (AVC) and average fixed cost (AFC) curves. Be sure to capture
asked by Daca 
Gov
I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific
asked by Blaze 
Math
A bill for a meal is $10.38 including tax. Find the total cost if the customer leaves a 15% tip.
asked by Devon 
SCIENCE2
WHY IS THE MANATEE CLASSIFIED AS AN HERBIVORE? PLEASE HELP ME WITH THIS ONE TOO!
asked by KAYLA 
Chemistry
Determine the grams of hexane that will react exactly with 22 g of oxygen. Show all working please. Thank you.
asked by Megan 
chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
asked by Laura 
Please Helppp Quickly PHYSICSSSS
A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?
asked by Anonymous 
English
When do you use the past participle: had had, had have, had has?
asked by Anonymous 
math
A girl cycles from her house to a friend’s house at 22 km/h and home again at 26 km/h. If the round trip takes 54 min, how far is it to her friend’s house? Round your answer to the nearest 0.1 km. [
asked by Ben 
English
What is a narrative essay? What else besides the recap of?
asked by Josephina 
PHYSICSSSS
A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a
asked by Anonymous 
PHYSICSSS
Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the
asked by Anonymous 
Physicssss please help
A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the
asked by Anonymous 
Physics
Car A passes a light post moving at 25m/s and continues at this speed. Two seconds later, another car passes the light post moving at 40m/s. Assuming no acceleration of either car. a)How much time will it take for the second car to catch up with the first
asked by Coco 
Physics II
A copper rod of length 0.83 m is lying on a frictionless table (see the drawing). Each end of the rod is attached to a fixed wire by an unstretched spring whose spring constant is k = 79 N/m. A magnetic field with a strength of 0.13 T is oriented
asked by Mareena 
SS7R Question/Help! (plz read)
The American Revolution From 1763 through 1776 the American colonies sprit of rebellion was escalating. After a long period of being ignored, England put harder rules over the colonist. Economic, political, and social factors made the colonist take steps
asked by Laruen 
Physics
A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the kinetic frictional force if fk, and the weight of the box is mg. Decide which forces do positive, zero or negative work and why?
asked by Nilan 
physics
A satellite is in a circular earth orbit that has a radius of 6.63E+6 m. A model airplane is flying on a 16.4 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the
asked by Anonymous 
English
Thank you very much. By the way, what do you think of our Comenius project? Do you think we did a good job? I still have a few setences on phrasal verbs I'd like you to check. (especially the reprhase of 1) 1) I can't understand the various meanings of
asked by Henry2 
math
Please show me how to set this up and how to solve: A ribbon with straight edges has an area of 24 inches squared. Its width is x and its length is 2x + 13. What is the width of the ribbon in inches?
asked by Jane 
chemistry
a. A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. b. 100 ml of a 0.1M solution of the above acid is titrated with
asked by billy 
physics
For a spring block system M=2.72*10^5kg frequency 10.0 hertz and amlitude 20.0cm (a) What is E (b) What is the block speed at its passes the equlibrium point.
asked by Ghazala shoaib 
Math
How do I set this up and how do I solve: The sum of two numbers is 20 The difference between 3 times the larger number and twice the smaller number is 40. What is the larger number?
asked by Jane 
geography
1. Sofia is the capital of what European nation? Bulgaria 2. Find the Nile River in Africa. What two cities are located near its Delta? Cairo and Alexandria 3. What large island is found off the coast of southern Labrador? Newfoundland 4. What is the
asked by Reed 
maths
in figure m // n and angle l and 2 are in the ratio 3:2 determine all the angles from 1 to 8
asked by mallavarapu 
math
If a metal ball is thrown downward with an initial velocity of 22 feet per second (15mph)from a 100 foot water tower, it's height h in feet above the ground after t seconds is modeled by h(t)=16t^222t+100 Determine when the height of the ball is 62 feet.
asked by alex 
function with a radical expression
f(x)=6 fx)=20+2x^2 all under a square root symbol 6=20+2(36) 6=the square root of 92 will someone help me
asked by luckybee 
geometry
area of a triangle is 50 centimeters and the base is 4 times the height what is the height?
asked by karyssa 
Chemistry
If very small concentrations of NaCl and AgNO3 are mixed, no precipitate forms. However, if large concentrations are mixed, a white precipitate forms. Can someone tell me a method for testing the hypothesis that "insoluble" salts would dissolve to some
asked by Sarah 
math
how long is the diagonal of a piece of paper that is 8.5 in by 11in
asked by Anonymous 
chemistry/check please
1) Oxygen and boron are in the same period . When they form a compound is written first.Phosphorus and arsenic are the same group. When they form a compoundis written first. A) oxygen/phosphorus B)oxygen/arsenic C)boron/phosphorus
asked by nick 
chemistry/help
1) Oxygen and boron are in the same period . When they form a compound is written first.Phosphorus and arsenic are the same group. When they form a compoundis written first. A) oxygen/phosphorus B)oxygen/arsenic C)boron/phosphorus
asked by nick 
physics
a force of 625 N is used to move an object with 1000N resistance up inclined plane of 2.0 m.What is the length of the inclined plane
asked by Lee 
law
can somebody who has done LLB advice me on studyn for da first year exam in may..i fear cz i was not really in touch n i doubt whethr i can score well for all 4 subjects(criminal/contract/constitution/english legal system) pls advice me how to pass all
asked by ruwangi 
Math
why might Pa^t and Pe^rt not produce the same answer? Thank You
asked by WaShu 
English
I urgently need you to check this sentence. Thank you. 1) In section F.4 concerning "integration into ongoing activity" our coordinating partner mistakenly wrote that our tenth classes instead of our eleventh classes, which correspond to the third classes
asked by Henry2 
chemistry
A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent.
asked by ashley 
Math
State the equation of the line passing through the points (7,1) and (2,2) a) 5x+3y16=0 b) 5x3x16=0 c) 3x  5y  16=0 d) 3x + 5y16=0  Is letter D correct?
asked by Jake 
electrostatic physics
An uncharged molecule of DNA (deoxyribonucleic acid) is 2.15 m long. The ends of the molecule become singly ionized so that there is a charge of −1.6 × 10^−19C on one end and +1.6 × 10^−19C on the other. The helical molecule acts like a spring and
asked by jc 
Math
Let f(t) be an exponential function with f(0) = 11 and f(4) = 59. Use the form f(t) = Pa^t to find an equation for this exponential function? What is the Value of P and A? Thanks!
asked by Andy 
Math 117
Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.
asked by Joseph 
statistics
A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical
asked by John 
Advanced Maths (Vectors) AQA Level
Triangle ABC with D, E and F the midpoints of BC, AC, and AB. G is the midpoint of AD such that the ratio AG:GD =2:1, VECtors AB =p and BC =q Prove that B, G and E are collinear. prove the same results for point C, G and F
asked by Jat 
statistics
A professor teaches two different subjects (history and sociology) in an ethnically diverse college. She wants to know how much interest students have in prominent political figures. She reasons that knowing this will help her plan for future lectures. She
asked by John 
math
A car is traveling at 120 km/h. How far does it travel in 6 1/3 hours?
asked by Tori 
science
Given that Antarctica is roughly semicircular with a radius of 2000 km and has an average ice thickness of 3000 m. a) How many km3 of ice does Antarctica contain? b) Assuming all the ice melts, how much will this raise sea level (ignoring that the Earth
asked by bibi meeble 
English
I included an introduction to 18thcentury novels (is it correct?) + the features of Defoe's novels. Thank you. 1) Structure of his novels His novels are fictional autobiographies always pretending to be true stories. 2) They are preceded by a preface by
asked by Henry2 
math
Q=3x^2+4y^2 if x+y=7 what is minimum value for Q. I have absolutely no idea how to solve this problem.
asked by summer 
communication
Can anyone explain to me what the meaning of "communication phenomenon" exactly is? Thankssss!
asked by maria 
Biology
How are soldier crabs useful to us and what things are humans doing to wipe them out?
asked by Jason 
Chemistry
Cobalt60, which undergoes beta decay, has a halflife of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co60? What is the activity of the sample in Bq?
asked by gary 
Chemistry
Cobalt60, which undergoes beta decay, has a halflife of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co60? What is the activity of the sample in Bq?
asked by gary 
Chemistry
You dissolve 5 g of calcium hydroxide in 2 liters of water. What is the molarity of the hydroxide ions in this solution? What is the molarity of the calcium ions in this solution?
asked by Amanda 
English
I need to write sentences using specific phrasal verbs. I need to knwo if they are possible and supply the equivalent in formal English. I havent' found the meaning of "let on to" Does it exist? Thank you 1) One boy had let off a firework in class. Many
asked by Henry2 
physics
Determine the force required through A for the system to remain in static equilibrium in the horizontal (not moving side to side). The forces at B and C are 40 N and 90 N, respectively
asked by Anonymous 
Algebra
Write an equation for the ellipse that satisfies the set of conditions. endpoint of major axis at ( 0, 10) and (0, 10) foci at (0, 8) and (08) Please help, I really don't understand how to do this
asked by Beth 
PHYSICS IS THERE ANYONE WHO WUD HELP PLEASE
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees
asked by Anonymous 
is this correct? math
find the domain of the real valued function; f(x) = sqrt(5  (sqrtx)) my solution: 5  (sqrt x) >=0 (sqrt x) >= 5 (sqrt x)
asked by HARRY 
refining
If I have a solution of gold chloride, is there a was I can grow metalic gold crystals to recover the gold instead of using sulfer dioxide to drop the gold as poeder?
asked by art 
english
i need to chose at least 8 songs and how they relate to romeo and juliet acts so i can make a soundtrack. thanks
asked by sam 
Healthcare
I have to do an assignment on Trends and Consumerism in Healthcare. What is a topic that I can do for this assignment? Please help I am Lost.
asked by DonnaK 
Engineering
The angular velocity of a rigid body rotating about an axis of rotation is w = 5^i + 2^j  4^k rad. per. sec. Determine the linear velocity of point B on the body with a position vector r = 3^i  ^j + 3^k ft. directed from a point on the axis of rotation.
asked by Aaron 
Calculus
find the area under the curve y = x^2 + x from the origin to the line x = 3
asked by hank 
math
Solve by factoring: 12 w(squared) = 28w +5
asked by Jane 
English
Thank you very much. Here is the second list of verbs I'd like you to check.I'd also need to rephrase each sentence using a verb which is not phrasal. Can you please help me? 1) A long strike threatened to bring down the Government 2) I’m sure this
asked by Henry2 
algebra
3 > x > 5 as the inequality that represents the real numbers less than 3 or greater than 5. Explain why this is incorrect.
asked by lucy needs help now 
statistics
Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is
asked by Tiffany 
Math
A 3 digit code can be made using the numbers 6,7,8,9, or 0? If repetition is not allowed, how many different codes are possible?
asked by Wendy 
Physics
If a total mass of 11.1 kg falls 5.23 m and all of the mechanical energy is converted to internal energy, by how much will the internal energy of the water increase? The acceleration of gravity is 9.81 m/s 2 . Assume no energy is transferred as heat out of
asked by Joe 
English
I left out two sentences I need to write in an email. 1) I wrote to the two Irish school's principals you suggested (to me) but none of them replied to my email. 2) As I would really like to start a school exchange programme with an Irish school in your
asked by Henry2 
phi 103
All dogs hate cats. Sirius is a dog. So Sirius hates cats" is an example of a
asked by Jason 
science
1. If a baseball is thrown 30 m/s backwards from a truck moving forward 50 m/s, how fast will the ball strike the glove of a groundbased catcher?
asked by Anonymous 
percentage
Sharil is cycling from his house to Jeju Island,which are 15km apart.If Sharil has cycled a distance of 9.5km,what percentage of the total distance does he have left? pls round off ur answer to 1 decimal place
asked by Da S 
physics
differentiate between density,mass and volume. state a formula in terms of mass density and volume. using the formula calculate the volume of a 10kg block of ice
asked by john 
chem
what are three different situations in which the diffusion of gases is desired or not desired. what could you do to increase the rate of diffusion(for a desired gas) or slow the diffusion( for an undesired gas)?
asked by skye 
percentage
Amit bought a pair of pants for 45$.he had to pay 7% GST. a)how much GST did Amit pay? b)how much did Amit pay for the pair of pants?
asked by Da S 
english
i need to chose at least 8 songs and how they relate to romeo and juliet acts
asked by john 
english
i need to create a eight song soundtrack and how they relate to romeo and juliet play.
asked by john 
artwork meaning
i make shattered image in art, but what shattered image mean? does it have meaning? i thought maybe it mean search for yourself.
asked by Mohammad 
PHYSICSSS please helppp ASAP
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and
asked by Anonymous 
PHYSICSSSSS helpppp please
Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the
asked by Anonymous 
algebra
please check and correct if needed. thanks problem: you have coupon of $50 off your telephone purchase of $100 or more at bell store. a. write a function relating phone purchase price after coupon, y, to the retail price, x . give the domain of this
asked by ann 
math
how long is the diagonal of a piece of paper that is 8.5 in by 11in
asked by Anonymous 
math
how long is the diagonal of a piece of paper that is 8.5 in by 11in
asked by Anonymous 
ms. sue
ms. sue i write question in other post.
asked by Mohammad 
Logics
Logicians regard the following as the meaning of the word "argument." (Points : 1) a. A hostile and emotional dispute b. A poetic tribute to Spring c. A set of reasons put forth to support a claim d. The kind of thing one has with a spouse
asked by Mary 
algebra
make five sets of balanced equations for the number 20:
asked by Adnan 
science
A force of 2000N is used to push a box up an inclined plane that is 5m long. If the 100 kg box is raised to a height of 8m, how much work is done against friction? Let g equal 10 m/s2; I need to know how to set the problem up
asked by Lee 
Calculus
Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?
asked by Matthew 
Social Studies 7R  DBQ Essay
I have this assignment for my social studies class. We have to write a DBQ essay on the American Revolution. We had done the documents for homework and go over it as a class. Here are the tasks below: 1. Identify and discuss two causes of the American
asked by Laruen 
ece
words are: A)convenient communication shortcuts B)not arbitrary symbols C)unique to each individual in english D)thoughts written down I chose b is this correct
asked by Deb 
Engineering
A force of 26 lb. acts through a point (4; 5; 7) ft. and is equally inclined to the positive ends of the orthogonal axes. What is the moment of this force about the origin So i'm assuming vector r is 4i+5j7k? And using the fact that cos^2α + cos^2β +
asked by Aaron 
math
divide 1 yd 4 in. by 5
asked by kayla 
Statistics
A manufacturer of a lowtar cigarette claims that their cigarettes contain an average of 16.3 mg of tar with a standard deviation of 3.1 mg per cigarette. How many sample cigarettes must the manufacturer observe to be 99% confident that the width of the
asked by Angel 
Phsyicsssss helppp
A 9.5kg watermelon and a 7.2kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and
asked by Anonymous 
Science
Can anyone please suggest a food chain which includes a soldier crab starting from the sun (in a marine environment)?
asked by Mae 
Science
what are contrasts between a marine and estuarine environment?
asked by Maica 
follow up from before
Is there some reason as to why nobody has addressed my financial accounting post from Saturday, February 11, 2012 at 5:45pm?
asked by Pumpernickel 
Chemistry
Is there any way to increase the ionic strength of a solution without increasing the pH?
asked by Jenny 
ece
It is likely that a preschooler who learns to read early: A) will watch a lot of tv B) will enjoy playing outdoors as do other children C) will watch less tv than other children D)will enjoy playing outdoors as do other children and will watch less tv than
asked by Deb 
Languages
How do you say the word "love" and "kind" is many languages. (the language doesnt matter, a list would be great)
asked by martha 
my quetion earlier was NOT answered
I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific
asked by Blaze 
Calculus
Find the derivative y = 3x+2/x+1
asked by Taylor 
Calculus
I think I wrote it wrong earlier it should be Find the derivative y = (3x+2)/(x+1)
asked by Taylor 
Math
What is the perimeter of a triangle 46m 36m and 9.5
asked by Landon 
maths
12a2+8a15
asked by Anonymous 
physics
If a particle were to move from position A to position b in 0.5s, what would be its rotational (angular) velocity? If the motion is uniform (constant speed), what would be its magnitude of the acceleration?
asked by Anonymous 
algebra
A certain toilet tank can be emptied in 6 sec through its drain when it is flushed. This happens at the same time that the water is flowing in through the inlet pipe. Withthe drain closed, the inlet pipe canfill the tank in 30 sec. How long would it take
asked by carolyn 
English
Here are the other phrasal verbs I need you to check (tell me of they are possible or of other are more often used) and which I also have to rephrase. Thank you very much! 1) Get your clothes off: they are all wet. 2) Get all that mess off your desk. I
asked by Henry2 
math
What conjectures/predictions can you make about polynomial functions whose highest exponent is 6, or 7?
asked by bella 
Calculus
On what interval is the function f(x)=x^26x+8 is increasing?
asked by JM 
chemistry
Given density of Mercury, 200.59....how do I calculate for the mass of 33.5mL
asked by jamie 
amer lit
how does the song dirty little secrets by the all american rejects apply to the scarlet letter
asked by mary 
geometry
The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. square root 5, 3, square root 14.
asked by Rachel 
Geometry
The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. 5, 6,10.
asked by Rachel 
algebra
x^7x8
asked by Anonymous 
algebra
x^7x8
asked by Anonymous 
4th grade math
How could you find the measurements of the garden with a perimeter of 60 feet and the greatest possible area?
asked by Paul 
english
how do i create a eight song soundtrack
asked by sam 
calc helppppp
use limits to find and verify all asymptotes in the graph y= sqr root (5+x^2)/(3x)
asked by adrina 
Maths
In a triangle ABC, AD is the altitude and AD = 10 cm and CD = 10 sqrt 3 cm, determine angle A ?
asked by Hreem 
science4
Last one i swear.... If the manatees were able to make 3 adaptions to their body or way of life for their survival, what would they be?
asked by KAYLA 
mathmeasurement
Subtract 1 foot 7 inch from 2 feet 2 inches
asked by kayla 
math
Subtract 1 ft 7 in. from 2ft. 2in.
asked by kayla 
Spanish
Answer in complete sentences. Te gusta más comer el desayuno o el almuerzo? ¿Por qué? My answer: Me gusta más comer el desayuno porque es nutritivo y bueno.
asked by Anonymous 
English
What are some culture collisions in the play othello by shakespere? i got one: color but i am stuck thank you
asked by FEA 
mathmeasurement
Multiply 2 yards 1 foot by 8
asked by kayla 
geometry
I need help to graph the circle 4x^2+4y^2+16x32y+71=0 Graph the circle
asked by steven 
math
convert units in the customery units of measure 5yd 2ft = ? yd i got 5.67 yard
asked by marko 
ece
preschoolers use private speech: a)to influence others b)to keep some of their ideas a secret c)because it is more efficient d) because it enables them to communicate new ideas
asked by Deb 
math
5 inches by 7 inches, and the box must be at least 4 inches tall. What is the least possible volume of a box, in cubic inches, that meets these requirements?
asked by haley 
ELA
We have to do something about dogs Name brands of dog foods
asked by Hayden 
math please help
determine the domain of the real valued function f(x) = sqrt(5  (sqrtx))
asked by mary 
mathmeasurement
How do i multiply 2 yards 1 foot by 8
asked by kayla 
PreCalc
Write a Sinusoidal function for the following. A ferris wheel is 100 feet in diameter and makes one revolution in 45 seconds. If the rider needs to walk up a ramp to get to their seat that is 5 feet above the ground, write the model for the rider.
asked by Marisa 
grammar
Is audience a pronoun, or just a noun? Can "yourself" be a demonstrative or Indefinite pronoun?
asked by Kendon 
Math
Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000. a. Before working the problem, estimate the value of N(7), the number of bacteria at noon on the
asked by Jean 
Chemistry
What is the mass of a solution that has a volume of 0.100L and a density of 1.07g/ml. Find in grams and In kilograms.
asked by Deb 
Biology
In ion exchange chromatography, why do you have to be careful not to disturb the resin bed or let air enter the resin bed? I get that it disturbs resolution.. but I'm not sure exactly what to say.
asked by Elle 
statistics
An art professor was interested in seeing what size group is best to prime the pump so to speak to encourage strangers to gather together in front of various exhibits at her art show, so she set up an experiment. In a municipal building off campus, she
asked by John 
Math 117
Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.
asked by Joseph 
ELA
Names of dog foods with artificial flavors
asked by Hayden 
Electrical and electronic
What is a system characteristic and how does it relate to the compensation ?
asked by Contraler 
mathmeasurement
divide 3 gallons by 4
asked by kayla 
Math 117
The formular r= 2 cube root5L can beusedto approximate the speed r,in mile per hour,of a car that has skid marks of lenght L,in feet. How far will a car skid at 60 mph.
asked by Joseph 
Math
The sum of the digits of a twodigit number is 12, and the units digit is twice the tens digit. Find the number.
asked by Carp 
Engineering/Physics
A force F = 7^i + 6^j  5^k lb. acts at the origin. Find the magnitude and direction cosines of the moment of this force about point A (4; 5; 6) ft So in this case wouldn't vector r= 4i +5j +6k and vector F = 7i + 6j  5k lb? and r X F = 61i +22j 59k =
asked by Aaron