Questions Asked on
November 4, 2010

Physics
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration it turns at a rate of 2.7 104 rev/min. (a) Find the drill's angular acceleration. (b) Determine the angle (in radians) through which the drill rotates during this period.
asked by Sam 
Physics
3. A person exerts a force of 55 N on the end of a door 74 cm wide. What is the magnitude of the torque if the force is exerted a)perpendicular to the door b)at a 45 degree angle to the door, c) at a 125 degree angle to the door?
asked by Bobby 
chemistry
In the REDOX reaction in basic solution Zn>Zn(OH)4+H2 I know that the first half reaction is 4H20+Zn>Zn(OH)4 +4H+e but the second one is either 2e+2H2O>H2+2OH (WHICH IS THE ANSWER GIVEN ON THE WORKSHEET) OR 2e+2H>H2 I think both leads to the same
asked by george 
Chemistry
Hydrogen and methanol (CH3OH) have both been proposed as alternatives to hydrocarbon fuels. a) Write balanced chemical equations for the complete combustion of hydrogen and the complete combustion of gaseous methanol. Combustion reaction for hydrogen:
asked by Jarrod 
chemistry
what the balanved equation for gaseous sulfur dioxide reacts with water to form aq sulfurous acid (H2SO3)
asked by nikki 
Chemistry
How much heat, in kilojoules, is associated with the production of 273kg of slaked lime, Ca(OH)2? CaO(s)+H2O(l)>Ca(OH)2(s) delta H=65.2kJ
asked by Lisa 
college chemistry
The base dissociation equilibrium constant (Kb) for C5H5N is 1.40×109 (eq. 1). (eq. 1): C5H5N(aq) + H2O(l) = OH(aq) + C5H5NH+(aq) Calculate the value of the equilibrium constant (Ka) for the hydrolysis of C5H5NH+ as shown in the reaction (eq. 2). (eq.
asked by sparkle 
biology
What happens to proteins dissolved in water when you heat it to 100 degrees celcius?
asked by Anonymous 
Chem
What is the enthalpy for the following reaction? overall: C2H4+H2O>C2H5OH is 1411kJ correct??
asked by Angel 
calculus
A squarebased, boxshaped shipping crate is designed to have a volume of 16ft^3. The material used to make the base costs twice as much (per ft^2) as the material in the sides, and the material used to make the top costs half as much (per ft^2) as the
asked by Bob 
STOICHIOMETRY
2Al + 3CuSO4 ! Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4?
asked by MAGGIE 
Physics  Standing Waves
a) A plot of lnv vs. lnT should be a straight line. Why? b) What is the slope of the straight line? c) What is the intercept of the straight line?
asked by Jerome 
college chemistry
Balance the equation in aqueous acidic solution: C2O42(aq) + MnO4(aq) → Mn2+(aq) + CO2(g) please teach me how to do it!
asked by sparkle 
AP Chemistry
One way of separating oxygen isotopes is by gaseous diffusion of carbon monoxide. The gaseous diffusion process behaves like an effusion process. Calculate the relative rates of effusion of 12C16O, 12C17O, and 12C18O. Name some advantages and disadvantages
asked by Anonymous 
Chem
What is the enthalpy for the following reaction? C2H4+H2O>C2H5OH
asked by Kay 
College Chemistry
Calculate the pH of a 0.5 M Formic Acid (HCOOH) soln. ka= 0.00018
asked by Anonymous 
PHYSICS HELP
The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.021 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at
asked by Taylor 
history
Heather bought a tenyear maturity corporate bond when it was issued for $1,000. The bond has an annual interest rate of seven percent and pays interest semiannually. How much does she receive every six months?
asked by Ed 
calculus
A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?
asked by Bob 
college Chemistry
It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
asked by alexis 
chem
A 455g chunk of iron is removed from an oven and plunged into 385g water in an insulated container. The temperature of the water increases from 27 degrees celsius to 89 degrees celsius. If the specific heat of iron is 0.449 J g^1 degrees Celsius^1, what
asked by Rachel 
trig
3tan(3x) = sqrt(3) Solve the equation for exact solutions of the interval [0,2pi).
asked by kyle 
8th grade
Consider the equation 3x+5y=k, what values could k so that the xintercept and y intercept on the equations graph would both be integers. explain.
asked by Monkeylover:) 
physics
The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it flows
asked by tee 
chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.95°C. What is the solution's molality?
asked by MaryJ 
physics
a modified Utube: the right arm is shorter than the left arm. The open end of the right arm is height d = 10.0 cm above the laboratory bench. The radius throughout the tube is 1.60 cm. Water is gradually poured into the open end of the left arm until the
asked by Ross 
physics
The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it flows
asked by tee 
Chemistry
A solution contains an unknown mass of dissolved silver ions. When potassium chloride is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 245 mg. What mass of silver was in the
asked by Brittany 
math
The distance between goalpost, BC, is three times the distance from the top of the goalpost to the bottom. If the perimeter of ABCD is 21 1/3 yards, what is the length of BC
asked by alex 
chemistry
how many moles of butane gas c4h10 react to produce 3.50moles of water?
asked by tracey 
Physics
A flat uniform circular disk (radius = 2.10 m, mass = 1.00 102 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 40.0kg person, standing 1.00 m from the
asked by Kevin 
Calculus
P(x)= x^3+15x^248x+450, x>/3 is an approximation to the total profit (in thousands of dollars) from the sale of x hundred thousand tires. find the number of hundred thousands of tires that must be sold to maximize profit.
asked by Dan 
Chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your
asked by Bella 
chemistry
Propane gas is used to heat a tank of water. If the tank contains 200 L of water, what mass of propane will be required to raise its temperature from 20 degrees C to 65 degrees C. The heat of combustion for propane is 2220 kJ/mol.
asked by Ray 
Science
How much would a 75 kg man weigh due to the effect of gravity?
asked by William 
IPC
Element A and element B have bonded and formed compound AB. Which of the following statements is true? A) Compound AB has chemical and physical properties that are completely different from those of A and B. B) Compound AB has chemical and physical
asked by Kaitlin 
chemistry
How many milliliters of a 5.0 M H2SO4 stock solution would you need to prepare 125.0 mL of 0.19 M H2SO4?
asked by MaryJ 
chemistry
calculate the concentration of a silver ion when the solubility produc constant of AgI is 10 to the power of negative 16
asked by kim 
chemistry
How many moles of solute are contained in a 150ml solution of a 0.25 M NaNO3 solution?
asked by Ed 
physics
a set of pulleys is used to lift a piano weighing 1,000 newtons. the piano is lifted 3 meters in 60 secounda. how much power is used?
asked by safiyyah 
Calculus
a local office supply store has an annual demand for 50,000 cases of photocopier paper per year. it costs $2 per year to store a case of photocopier paper, and it costs $50 to place an order. Find the optimum number of cases of photocopier paper per order
asked by Melissa 
math grade 11
A quadratic function is defined by f(x)= 3x^2+4x2. A linear function is defined by g(x)= mx5. what values(s) of the slope of the line would make it a tangent to the parabola
asked by priya 
trig
A plane climbs into the jet stream which is flowing at a rate of 80 miles per hour. It travels with the jet stream for 5 hours and then reduces its altitude, flying out of the jet stream for 4 more hours. The plane, while out of the jet stream, covered 550
asked by Anonymous 
science
what is the solute and solvent in a solution made from 15 mL of oxygen and 5 mL of helium?
asked by jan 
Physics
A 0.18 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The
asked by Jessica 
Physics
A rollercoaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can
asked by Rose 
Physics ( elestic potential energy)
A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the spring is 3.57m. Calculate the elastic potential energy stored in the spring.
asked by Pablo 
technology in the classroom
what is one disadvantage of drillandpractice programs?
asked by carlo 
Physics
A rotating wheel requires 9.00 s to rotate 29.0 revolutions. Its angular velocity at the end of the 9.00 s interval is 98.0 rad/s. What is the constant angular acceleration of the wheel in radians/second squared? (Do not assume that the wheel starts at
asked by Annie 
chemistry
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the uncertainty in its position is at least a)66 m b)17 m c)6.6 x 108 m d)1.7 x 108 m e)None of the above
asked by lavonne 
Chemistry(I'm sooo confused here!)
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following wavelengths is not predicted by the equation: 1/ = (1.097 x 10(7) m  1) x (1/n1(2)1/n2(2) a)182 nm b)103 nm c)97 nm d) 95 nm e)
asked by lavonne 
Geometry
A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,3) what are the coordinates of the endpoints of the other diagonal?
asked by alex 
math
Let f be he realvalued function defined by f(x)=sin^3x+sin^3x (a) find f'(x) for x>0 (b) find f'(x) for x
asked by Mariam 
Chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your
asked by Bella 
PHYS
A bungee jumper (m = 61.00 kg) tied to a 45.00 m cord, leaps off a 75.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumper as the cord stretches?
asked by LEON 
Chemistry
Organic chemistry: an attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of 11.0 degrees. If it is known that the specific rotation of the R enantiomer is
asked by Tokey 
Physics
a modified Utube: the right arm is shorter than the left arm. The open end of the right arm is height d = 10.0 cm above the laboratory bench. The radius throughout the tube is 1.60 cm. Water is gradually poured into the open end of the left arm until the
asked by Ross 
Physical
Tarzan, who has a mass of 85.0kg, is going to cross a gorge by swinging in an arc from a 4.0m long hanging vine. If his arms are capable of exerting a force of 1500N on the rope, what is the maximum speed he can tolerate at the tolerate at the lowest point
asked by Sui 
Science
what is the acceleration of a boy on a skateboard if the unbalanced forward force on the boy is 15 N? The total mass of the boy and the skateboard in 58 kg
asked by Fred 
physics
In the cabin of a jetliner that cruises at 600 km/h, a pillow drops from an overhead rack into your lap below. Since the jetliner is moving so fastm why doesnt the pillow slam into the rear of the compartment when it drops? What is the horizontal speed of
asked by Kelsea 
physics
A pulley rotating in the counterclockwise direction is attached to a mass suspended from a string. The mass causes the pulley's angular velocity to decrease with a constant angular acceleration α = 2.2 rad/s2. If the pulley's initial angular velocity is
asked by aok 
physics
A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.15 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N. a) Find the speed of the bucket. b)How fast must the bucket move at the top of the circle
asked by jess 
Physics
The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.021 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at
asked by Taylor 
physics
A small, 300 g cart is moving at 1.90 m/s on an air track when it collides with a larger, 2.00 g cart at rest. After the collision, the small cart recoils at 0.820 m/s. What is the speed of the large cart after the collision?
asked by Danielle 
math
The function D(h)=7e^0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams will be present after 9 hours. Round three decimal places. so 7e^(0.4 x 9) =
asked by Hannah 
college chemistry
Balance the equation in aqueous basic solution: ClO3(aq) + Fe(OH)3(s) → FeO42(aq) + Cl(aq)
asked by sparkle 
college chemistry
Balance the equation in aqueous basic solution: Fe(CN)64(aq) + Ce4+(aq) → Ce3+(aq) + Fe3+(aq) + CO32(aq) + NO3(aq)
asked by sparkle 
Algebra
How should two nonnegative numbers be chosen so that their sum is 1 and the sum of their squares is as large as possible? As small as possible?
asked by Adolfo/Kristi 
College Chemistry
When 20.0 g C2H6 and 60.0 g O2 react to form CO2 and H2O, how many grams of water are formed?
asked by Jake 
Physics
Two identical 19.8kg spheres of radius 12 cm are 29.2 cm apart (centertocenter distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at
asked by Oscar 
geometry
Two ships leave a harbor at the same time, traveling on courses that have an angle of 140 degrees between them. If the first ship travels at 26 miles per hour and the second ship travels at 34 miles per hour, how far apart are the two ships after 3 hours?
asked by Rac 
Chemistry
A 455g chunk of iron is removed from an oven and plunged into 385g water in an insulated container. The temperature of the water increases from 27 degrees celsius to 89 degrees celsius. If the specific heat of iron is 0.449 J g^1 degrees Celsius^1, what
asked by Angel 
physics
A spot of paint on a bicycle tire moves in a circular path of radius 0.27 m. When the spot has traveled a linear distance of 2.18 m, through what angle has the tire rotated? Give your answer in radians.
asked by aok 
Emergancy help!!!!!!!!!
Classify the model as exponential growth or exponential decay. Identify the growth or decay factor and the percent increase or decrease per time period. y=16(1.25)^t
asked by Nikki 
math
washington school cost about $12,350,000 to build. use words to write that amount of money. 24. two factors of 16 are 1 and 16 beacuse 1*16= 16. find three more factors of 16.
asked by jojo 
Math
I'm really struggling with how to set this up: A company has 18 members on its management team,10 men and 8 women. There is a conference in Hawaii, and the company decided to send 5 people. If the selection of five people is random, find the following
asked by Samantha 
AP Chemistry
The molar mass of a volatile liquid (one which vaporizes easily) can be determined by a the DUMAS METHOD.' In this process a small amount of the liquid (a few drops) is placed in a clean flask. The mouth of the flask is covered with a piece of foil that
asked by D 
physics
A 1200 kg car is being driven up a 5:0 hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 524 N. A force ~F is applied to the car by the road and propels the car forward. In addition to these two forces, two
asked by Anonymous 
Physics
A spherical 0.34 kg orange, 2.0 cm in radius, is dropped from the top of a building of height 31 m. After striking the pavement, the shape of the orange is a 0.60 cm thick pancake. Neglect air resistance and assume that the collision is completely
asked by Tired 
physics
A UNIFORM RING OF MASS M AND RADIUS R IS ROLLING WITHOUT SLIPPING ON A HORIZONTAL SURFACE.FIND THE RADIUS OF CURVATURE OF TRAJECTORY TRACED OUT BY THE HIGHEST POINT?
asked by Anonymous 
Physics
A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is
asked by Bella 
Physics
Gravity on the surface of the moon is only 1 6 as strong as gravity on the Earth. What is the weight of a 33 kg object on the Earth? The acceleration of gravity is 10m/s2 . Answer in units of N.
asked by RImon 
math
Kwan has modeled a number that is less than 999. His model has twice as many 100blocks as 10blocks. It has twice as many 10blocks as 1blocks. What is the number?
asked by guru 
Physics
Water flows over a section of a waterfall at the rate of 4.9 104 kg/s and falls 36 m. How much power is generated by the falling water?
asked by MRock 
Chem
Part A : This is the first law of thermodynamics question. case 1  the system expands and the surroundings get hotter case 2  the system expands and the surroundgins get colder case 3  the system contracts and the surroundings get hotter case 4  the
asked by AY 
physics
What is the magnitude of the apparent weight of a 79 astronaut 5200 from the center of the Earth's Moon in a space vehicle moving at constant velocity?
asked by RJ 
organic chemistry lab
chloroform is an excellent solvent for extraction caffeine from water. Kd = 10 for caffeine in chloroform water at 25 Celsius. what weight of caffeine would be removed from a solution of 4g caffeine in 100ml water by a single extraction of 100 ml of
asked by jayesh 
physics
A spot of paint on a bicycle tire moves in a circular path of radius 0.27 m. When the spot has traveled a linear distance of 2.18 m, through what angle has the tire rotated? Give your answer in radians.
asked by aok 
Physics(Checking answer)
Sorry for the repost but I really need to know this, but now I just want to know if the question is right. A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the
asked by Pablo 
phy
A scuba diver and her gear displace a volume of 71.0 L and have a total mass of 64.0 kg. (a) What is the buoyant force on the diver in sea water?
asked by mas 
Physicsbobpursleyplease check
This is the question I posted about two hours ago and I worked it out two wayscould you scroll down and check it, please?If I have a roller coaster, and hill 1 height is 50cm and hill height 2 is 25 cm and the PE is .9 as it approaches the top of hill 2,
asked by Joey 
English
1. The car runs on gas. 2. The car runs on gas and electricity. (Are both grammatical? Do we have to use 'on'? Can't we use other prepositions instead of 'on'?)
asked by rfvv 
Physics
A massless spring of constant k = 91.0 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then released and travels toward a circular
asked by Erin 
Geometry
MNPQ is a rhombus. The measure of angle MRQ is (13t1) degrees, and the measure of angle PQR is (7t+4) degrees. what is the measure of angle PQM?
asked by alex 
Physics
I THINK SOMEONE HAS THIS SAME QUETION! A massless spring of constant k = 91.0 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then
asked by Gage 
math
a computer company can sell 1000 computers if they price them at $500. The number sold will increase by 10 for every 1$ decrease in the price. The company has fixed cost of $100,000, and each computer costs $300 to produce. Find the price that will
asked by chris 
Geomtry
The scissor lift forms rhombus PQRS with PQ= (7b5) meters and QR= (2b0.5) meters. IF S is the midpoint of Line RT, what is the length of line RT
asked by alex 
calculus
solve (12/t)+t8=0 (solving rational equations)
asked by carli 
10th grade
Two ships leave a harbor at the same time, traveling on courses that have an angle of 140 degrees between them. If the first ship travels at 26 miles per hour and the second ship travels at 34 miles per hour, how far apart are the two ships after 3 hours?
asked by Rac 
college
convert 2(NH4)3PO4+3HgSO4=3(NH4)2SO4+Hg3(PO4)2 into complete ionic equation,then net ionic equation
asked by mike 
math
A 6 pack of 4oz. containers of yogurt costs $2.99. What is the unit price in cents per ounce? Round to the nearest hundredth of a cent. I multiplied 6x4=24 then did 2.99/24=.1245833 then since needed to round to the nearest hundredth of a cent I came up
asked by m 
Algebra1
Predict the weight of a man that is 84 inches tall.
asked by Sam 
chemistry
in an element on the periodic table, which number tells you the how many electrons are in that element??
asked by Jane 
chemistry
What is the mole fraction of NaOH in an aqueous solution that contains 16.9% NaOH by mass?
asked by MaryBeth 
Chemistry*
The following equation is given: S2O3 2 + 2H +1 > S + SO2 + H2O [HCl] = 2 mol/L [Na2S2O3]= 0.3 mol/L what is the concentration (mol/L) of H+ if you were to add: a) 20 mL of HCL with 5 mL Na2S2O3 & with 5 mL H2O b) 15 mL of HCl with 5 mL Na2S2O3 & 10 mL
asked by Stephanies 
american History
Can someone help me please. I am having a hard time answering this question. Do you think Great Britain was justified in imposing taxes on the colonies following the French and Indian War? Or do you believe the colonists had legitimate grievances regarding
asked by Maria 
algebra
A mountain drops 90 feet over a horizontal distance of 875 feet. What is the slope of the mountain? Round your answer to two decimal places.
asked by franklin 
chemistry
When heated, CaCO3 decomposes as follows: CaCO3 (s) = CO2 (g) +CaO (s) in an experiment, 10.00 g of CaCO3 was placed in a .500 L container, and when it was heated to a constant temperature, 50% of the solid decomposed. What is the value of Kc for this
asked by Rory 
Physics
A rollercoaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can
asked by Rose 
Physics
The clothesline is under tension when you hang from it. Why is the tension greater when the clothesline is strung horizontally than whe is hangs vertically?
asked by Kelsea 
Calculus
the demand for ground chuck(hamburger) in a certain region of the US is given by q= 3.41p^0.22. is the demand for ground chuck elastic or inelastic
asked by Melissa 
Calculus
Given the demand function q=1735p, determine the price where demand has unit elasticity.
asked by Melissa 
Hello
why does fluorene elute first from the column
asked by cairo 
physics
A solenoid has a crosssectional area of 2.60 104 m2, consists of 600 turns per meter, and carries a current of 0.7 A. A 10 turn coil is wrapped tightly around the circumference of the solenoid. The ends of the coil are connected to a 0.8 resistor.
asked by tee 
physics
A solenoid has a crosssectional area of 2.60 104 m2, consists of 600 turns per meter, and carries a current of 0.7 A. A 10 turn coil is wrapped tightly around the circumference of the solenoid. The ends of the coil are connected to a 0.8 resistor.
asked by tee 
phy
An undersea research chamber is spherical with an external diameter of 5.80 m. The mass of the chamber, when occupied, is 68400 kg. It is anchored to the sea bottom by a cable. Calculate the following. (a) the buoyant force on the chamber N (b) the tension
asked by mas 
Physicsbobpursley please check
This is the question I posted about two hours ago and I worked it out two wayscould you scroll down and check it, please?If I have a roller coaster, and hill 1 height is 50cm and hill height 2 is 25 cm and the PE is .9 as it approaches the top of hill 2,
asked by Joey 
physics
A solenoid has a crosssectional area of 2.60 104 m2, consists of 600 turns per meter, and carries a current of 0.7 A. A 10 turn coil is wrapped tightly around the circumference of the solenoid. The ends of the coil are connected to a 0.8 resistor.
asked by tee 
math
A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,3) what are the coordinates of the endpoints of the other diagonal?
asked by alex 
science
an air sample contains 0.046% CO2 if the total pressure is 760mmHg what is the partial pressure of CO2
asked by diana 
HELP! URGENT!
What is the pH of a 0.030M solution of KF? Ka of HF is .2 x 10^4. THNX!
asked by John Parker 
Chemistry
When heated, N2O4 dissociates as follows: N2O4 =2NO2 A flask initially contians .560 M N2O4. at this temperature, Kc is 4.00. what is the equilibrium concentration of NO2?
asked by Rob 
math
MNPQ is a rhombus. The measure of angle MRQ is (13t1) degrees, and the measure of angle PQR is (7t+4) degrees. what is the measure of angle PQM?
asked by alex 
VB Programming
Haw to create a web application for a vb auto center project from chapter 4.
asked by Geri 
Science
Does my hypothesis match with my intro? I'm writing a lab report. Introduction: The intention of this lab is to find the pH of different household material. Boiled red cabbage juice will be used as the pH indicator. pH is the chemical potential of hydrogen
asked by Elizabeth 
physics
A weight lifter lits a 1250 pound barbell 2 meters in 3 seconds. How much power was used to lift the barbell
asked by janice 
chemistry
At 900 degrees C, Kc for the reaction is 5.1. if .050 mole of H20 and .100 mole of Fe are placed in a 1L container at 900 degrees C, how many grams of Fe3O4 are present at equilibrium?
asked by Donna 
Physics
A string is under a tension of 700.0 N. A 1.5 m length of the string has a mass of 4.5 grams. What is the speed of a transverse wave of wavelength 0.50 m in this string? What is the frequency of the wave?
asked by Jerome 
Calculus
Find the indicated absolute extremum as well as all values of x where it occurs on the specified domain f(x)= x^2e^0.25x ; [3,10]
asked by Dan 
PHYSICS
If you hold a coin above your head while in a bus that is not moving, the coin will land at your feet when you drop it. Where will it land if the bus is moving in a straight line at a constand speed? Explain.
asked by Kelsea 
college Chemistry
It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
asked by alexis 
english
Plot is closely related to _____. authenticity?
asked by danny 
math
8. in the 2004 presidentail election, 4651 residents of the state of rhode island voted for candidate ralph nader. round that number of residents to the nearest thousand, to the nearest hundred, and to the nearest ten.
asked by jojo 
math
The distance from B to D is approximately (x+10) feet, and the distance from A to C is approcimately (2x5.3) feet. what is the approximate distance from A to C?
asked by alex 
physics
img145.imageshack.us/img145/7130/picture1n.png this is basically the diagram to my question A person of mass m = 62 kg is doing pushups as shown in the attached figure. The distances are a = 91 cm and b = 60% of l1. Calculate the vertical component of the
asked by anna 
physics
a crate of mass m=100k is pushed at constant speed up a frictionless ramp of angel 30 by horizontal force .what are the magnitude of force
asked by Anonymous 
physics
A 1.7 kg otter starts from rest at the top of a muddy incline 85.3 cm long and slides down to the bottom in 0.40 s. What net external force acts on the otter along the incline?
asked by Anonymous 
Math: Calculus
Can someone help me out here with these two problem? I have know idea where to start. 1)The equation: 10(x1)(x2)(x3)=1, has three real solutions a
asked by REALLY NEED HELP!!!! 
PhysicsPlease help
If I have a roller coaster, and hill 1 height is 50cm and hill height 2 is 25 cm and the PE is .9 as it approaches the top of hill 2, how do I calculate the speed. Please help
asked by Joey 
chemistry
If 7.50 grams 1butene reacts with 25.0 g oxygen how many grams of carbon dioxide will form? Which reactant is limiting? How many grams of excess reactant will be left at the end of the reaction?
asked by rosa 
Math(Please check)
Find the domain of the following rational function. R(x) = 3x^2 / x^2 + 2x  48 (x+8)(x6) So domain is x cannot be 8 or 6. Am I correct?
asked by Hannah 
English
Bring me the largest head of lettuce, please. I have to pick out the prepositional phrase and then identify its object. of lettuce (pp phrase) lettuce (it object)
asked by Jim 
Calculus
find the absolute extrema if they exist as well as where they occur f(x)= x1/x^2+3x+5
asked by Dan 
Physics
2. A person exerts a perpendicular force of 75 N on a door. Calculate the torque on the door hinges if the force is applied a distance of 30 cm, 50 cm, and 75 cm from the hinge.
asked by andrew 
college
I have 7 12 feet of rope and my friend has 3/10 of what we . need to make a jump rope hang up in our back yourd
asked by math 
Chemistry
What is the chemical cause of the greens and red colors of aurora borealis (the northern lights)?
asked by anonymous 
marketing research
is a random sample of 500 students large enough to represent all of the full time college students in the united states?
asked by jack 
Chemistry
the initial pressure of phosgene gas (COCl2), was 1.31 atm. it was heated, and at equilibrium the pressure of CO was found to be .547 atm. what are the equilibrium pressures of Cl2 and COCl2? CO +Cl2=COCl2 i've done it twice and keep getting the wrong
asked by Blair 
Math
How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in
asked by Dwight 
english
Imagine you are on a local commission appointed to study the lack of proper recreation facilities for youth in your neighborhood. Decide what facilities should be recommended. Write an appropriate resolution to be presented to your county government.
asked by jason 
physics
A circular ring of wire of diameter 0.60 m carries a current of 35A. What acceleration will the magnetic force generated by this ring give to an electron that is passing through the center of the ring with a velocity of 1.2*10^6 m/s in the plane of the
asked by steve 
US History
How did Truman's support of civil rights cause a split in the Democratic party? Thanks MC
asked by mysterychicken 
Earth Science
What are the primary heat absorbing gases in the atmosphere? What wavelength of radiation do they absorb?
asked by Anon 
Physics
Two identical 21.2kg spheres of radius 12 cm are 30.6 cm apart (centertocenter distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at
asked by Oscar 
English
He keeps himself in good health. (What is the part of speech of 'in good health'? An adjective phrase or an adverbial phrase? I think we can substitude 'healthy' for 'in good health'? Then, is 'in good health' an adjective phrase?)
asked by rfvv 
college chemistry
Which of the following statements is not true when a human is subjected to cold temperatures? Answer a.blood vessels dialate to help dissipate heat b.shivering causes the muscles to generate more heat c.blood vessels in the extremities constrict to reduce
asked by barbra 
6th grade
There are 3 parades on Cable Tv in the morning, 2 in the afternoon and 4 at night. How Many different combinations of parades can Ty watch?
asked by Maddy 
Discrete Math
7.A group has 9 women and 7 men. d. Suppose 2 members of the group refuse to work together. How many subgroups of 5 can be chosen 8. In how many ways can 16 people be seated: a. In a row, if 4 of the 16 do not want to sit next to one another b. In a row,
asked by Justin 
Physics
A 3 kg ball is dropped from the top of a cliff. At the same time, a 9 kg ball is fired straight down from the top of the cliff. Ignoring air resistance, what can we say about their accelerations after being released?
asked by Zaphod 
English
1. If it snows tomorrow, I'll not go hiking. 2. Because it snows tomorrow, I'll not go hiking. 3. Because it will snow tomorrow, I'll not go hiking. (Which one is correct of the two, #2 and #3?)
asked by rfvv 
physics
What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 {\rm fm}.
asked by jack 
Math
If √ax²b=c and a=2, b=7, and e=5, find X
asked by Astri 
statistics
for a sample of n = 36, find the probability of a sample mean being less than 12.2 if u = 12 and o = 0.95
asked by caintgetrite 
English
Can you please tell me if I made any mistakes in the following sentences? Thank you very much for your help. Thank you for your corrections. Can you please check the grammar in the following letter, please? 1) Do you think you can help me find a school in
asked by Franco 
Physics
Gravity on the surface of the moon is only 1 as strong as gravity on the Earth. 6 What is the weight of a 30 kg object on the Earth? The acceleration of gravity is 10 m/s2 . Answer in units of N.
asked by Dede 
Math
Classify the model as exponential growth or exponential decay. Identify the growht or decay factor and the percent increase or decrease per time period.
asked by Nikki 
computer science
what is the cost(most expensive,expensive or less costly)performance(powerful, most powerful or average)reliability(highly reliable or less reliable) size(large, medium or small)and installed in numbers(few, many or large) of super compters, mainframe
asked by tina 
calculus
Find the limit of this calculus problem.? (5x3)/(ln(5+4e^(x)) x=inf
asked by Zel 
probability
A new test for detecting a disease has been developed. Medical trials show that 92% o patients with the disease show a positive test result. If 4% of the population have the disease, determine the probability (to 3 decimal places) that: a.) a radnomly
asked by jj reddick 
spanish
How does this sound as a restaurant review? Mi familia comimos en ese restaurante ayer. En ese restaurante Modern Apizza siempre serve pizza. Se hacen con al horno de ladrillo. Pides pizza, bebidas, ensaladas, y el pan. Pedimos ensalada de antipasto
asked by Lily 
journal entry
On February 28th, the company adjusted for supplies used during the month, At February 28th, supplies on hand had a cost of $695.
asked by Thara 
english
"The author successfully translates her experience in Darfur into terrifyingly realistic scenes." authenticity?
asked by danny 
chemistry
What volume of a 3.70 M KI stock solution would you use to make 0.400 L of a 1.25 M KI solution?
asked by MaryBeth 
English
It "accepted" the bride into the family. Is accepted an action verb physical or mental? It is referring to a letter
asked by Mary 
10th grade
how many moles of anhydrous MgSO4 are in 2.04grams of MgSO4
asked by dasha 
US History
1. Why did Congress pass the TaftHartley Act in 1947? a. to protect union officials against undue invasion of privacy b. to raise wages c. to increase unemployment benefits d. to restrict labor strikes that threatened the national interest D? 20. An
asked by mysterychicken 
MAT 115
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be
asked by G 
Physics
There is a vertical tension at the top of a 4 m long ladder holding it at an incline. The bottom of the ladder is touching the floor, which exerts a normal force. You are standing 1 meter from the top of the ladder. What happens to the tension as you walk
asked by Gunther 
Chemistry
7.72 g of CuBr2 contains how many bromide (Br) ions?
asked by Jamie 
fractions word problems fifth gradee
I have fraction word problem made from a recipe. If it takes 2 1/2 cups of oatmeal to make 30 cookies. How much oatmeal will it take to make 120 cookies?
asked by jermall 
Chemistry
I had a problem that asked what volume of water in gallons would need to be split to store the same amount of energy as found in 10.0 gallons of gasoline? I got an answer of 10.06 gallons of water. Just by looking at it, does this sound like it could be
asked by Morgan 
Math: Calculus
Find the smallest positive value of which satisfies  x=4.100cos(2.800x) Give the answer to four places of accuracy._________ Remember to calculate the trig functions in radian mode.
asked by REALLY NEED HELP!!!! 
Math: Calculus
The equation: 10(x1)(x2)(x3)=1, has three real solutions a
asked by REALLY NEED HELP!!!! 
MATH
THE MEAN PRICE OF DIGITAL CAMERAS AT AN ELECTRONIS STOR IS $224, WITH A STANDARD DEVIATION OF $8. RANDOM SAMPLES OF SIZE 36 ARE DRAWN FROM THIS POPULATION AND THE MEAN OF EACH SAMPLE IS DETERMINED.
asked by caintgetrite 
French
Can you check these thanks. Le métro Directions: Completez 1. Il y a dix tickets de métr dans un . Answer: carnet 2. On peut acheter des tickets au  ou au . Answer 1: guichet Answer 2: distribueur automatique 3. Les
asked by Rachel 
Discrete Math
7.A group has 9 women and 7 men. d. Suppose 2 members of the group refuse to work together. How many subgroups of 5 can be chosen 8. In how many ways can 16 people be seated: a. In a row, if 4 of the 16 do not want to sit next to one another b. In a row,
asked by Justin 
physics
i have two kinetic energies and my homework asks for the ratio, K2/K1 Do i just divide them?
asked by quick question 
Physics
A man weighs 1220 N on Earth. What would he weigh on Jupiter, where the freefall acceleration is 25.9 m/s2? The acceleration of gravity is 9.8 m/s2 . Answer in units of N.
asked by Dede 
writing
Write five sentences about the role of education in successful financial planning in the spaces on the following page. Correctly use a different verb tense in each sentence. Highlight each verb in yellow and identify the tense in parentheses.
asked by duggyfresh 
Geometry
The distance from B to D is approximately (x+10) feet, and the distance from A to C is approcimately (2x5.3) feet. what is the approximate distance from A to C?
asked by alex 
college chemistry
Which of the following terms would be in the product(s) for the correctly balanced equation if the equilibrium expression is: [CO2]2/[CO]2[O2] a. O2 b. 2 CO2 c. CO2 d. 2 CO
asked by barbra 
logarithmic differentiation
How do you find the logarithmic differentiation of y = x^6x?
asked by Christina 
government
What is a document that sets up the broad organization of a government and the rules under which it operate?
asked by dede 
PRE CALC PLEASE HELP!!!!!!!!
find the solutions of the equation that are in the interval [0,2pi) 2cos^2x=4sin^2(1/2x)
asked by Hayli 
math
for a sample of n = 75, find the probaBILITY OF A SAMPLE MEAN BEING BEIGN GREATER THAN 221 IF U = 220 AND O = 3.9
asked by caintgetrite 
English
Can you help me check these sentences please? I still have some doubts. 1)I like playing sports in the real life but I have never played online games. 2)I have internet access at home (?). I find sports and game (?) websites interesting. 3)I have never
asked by Franco 
Finance
Johnson Alarm Systems had 800,000 of retained earnings on December 31, 2008. the company paid common dividends of 60,000 in 2008 and had retained earnings of 640,000 on December 31, 2007. how much did Johnson earn during 2008, and what would earnings per
asked by Anonymous 
chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
asked by MaryBeth 
accounting
i. On February 27th, the company sold goods on account to CUSTOMER, $1,800. The goods had a cost of $900. Dungy uses a perpetual inventory system. ans> A/R (debit) $1800 Sales (credit) $1800 Cost of Goods Sold (debit) $900 Merchandise Inventory (credit)
asked by Thara 
Calculus
Given the demand function q=1735p, determine the price where demand has unit elasticity.
asked by Melissa 
chemistry
What is the molarity of OH in a 7.68×104 M NaClO solution that hydrolyzes according to the equation. ClO(aq) + H2O(l) = OH(aq) + HClO(aq) Constants: Kh=2.86×107 Can someone help me figure this one out?
asked by axl 
chemistry
What is the molarity of OH in a 7.68×104 M NaClO solution that hydrolyzes according to the equation. ClO(aq) + H2O(l) = OH(aq) + HClO(aq) Constants: Kh=2.86×107 Can someone help me figure this one out?
asked by axl 
math
how would 3 neighbors divide a sharing a rectangle piece of land divide it into 24 equal pieces and what fraction of land would each get
asked by jeff 
algebra
can you tell me the process of how to simply problems like this so i don't have to keep asking? simplify: (2x^2y)(5x^5y^6) (5y)^3
asked by mike 
ela
i have to draw globe thetre but i have no idea how to draw. they give me some describsion:the stage was 45 feet high,surrounded by railing,. the celing above the stage, supported by two colums,was painted with the sun,moon,stars and zodiac sign and more
asked by anu 
accountingjournal entry
On February 28th, the company adjusted for supplies used during the month, At February 28th, supplies on hand had a cost of $695.
asked by Thara 
chemistry
express the barometric pressure in atm. 30.09Hg
asked by thomas richards 
math
1.Drew has fiftysix rolls. seven rolls will fit on one tray. how many trays does he need to carry all of the rolls? write an equation to solve the problem. 2. one gallon is about 3.78 L.about how many liters tow gallons? use words to write the answer. to
asked by jojo 
prealgerbra
I have been working on this problem for an hour and a half! I keep getting 1.33 but I know that's not right!! Jim drove the 120 miles to grandmothers house in 3 hours. He increased the speed by 10 miles per hour on the way home. How long did it take him to
asked by Katie 
physics
A yoyo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yoyo if I hold the string with my fingers?
asked by lacey 
Math
Using the digit 2 and 1. Write a decimal less than 0.3
asked by Sara 
math
Your friend is tossing a coin. He says that heads and tails are equally likey outcomes, so the probability of getting heads is 50/50. Explain your friends error.
asked by Anonymous 
Pharm Tech
how many milliliters of a 5% stock solution are needed to prepare 250ml of a 2% solution?
asked by Kelsey 
math
whrit for multiplication/division facts using the numbers 3, 8, and 24. 5.what are the seven months of the year that have 31 days? 6. find the eughth multiple of six. then add one. what is the square root of the answer? 8. in the 2004 presidentail
asked by jojo 
physics
An object is moving to the right at a speed of 4 m/s. Four forces(10N North, 10N South, 20N Left, 20N Right) are applied to the object at the same time. What will be the object's speed in m/s after the forces are applied?
asked by Lelette 
psycology
Discuss how the visual system resolves ambiguities by making different types of assumptions and describe these assumptions.
asked by Anonymous 
math
write for multiplication/division facts using the numbers 3, 8, and 24. 5.what are the seven months of the year that have 31 days? 6. find the eughth multiple of six. then add one. what is the square root of the answer?
asked by jojo 
history
How does a command economy affect a worker's life?
asked by Jon 
Pre CAL!! Please HELP
find the solutions of the equation that are in the interval [0,2pi) (a) sin2t+sint=0 (b)costsin2t=0
asked by Hayli 
physics
An object is moving to the right at a speed of 4 m/s. Four forces(10N North, 10N South, 20N Left, 20N Right) are applied to the object at the same time. What will be the object's speed in m/s after the forces are applied?
asked by Lelette 
chemistry
How do u solve this calculate the mass of (NH4)2SO4 if 16 g H is used
asked by Anonymous 
math algebra
how would i do this problem elina and teresa raced on their bikes to the library after school. they both left at 3:00 pm and bicycled along the same trail elina rode at the speed of 12 miles an hour and teresa rode at the speed of 9 mph. elina got there
asked by bob 
11th Grade AP English
i have to wright an essay tomorro comparing The Great Gatsby and The Color of Water. Can anyone help me get some ideas/topics on what i should wright about?
asked by Davud 
math 111 urgent please help
Find a degree 6 polynomial with  8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (nonconstant) factors of the polynomial correspond to real zeroes.
asked by Eileen 
US History
Why might it have been a mistake for Germany to have broken its pact and invaded the Soviet Union during World War II? Thanks MC
asked by mysterychicken 
chemistry
One way that safety enters into specifications is to specify the composition of a vapor in air that could burn if ignited. If the range of concentration of benzene in air in which ignition could take place is 1.4 to 8.0 percent, what would be the
asked by Jack 
ap calculus
A particle moves along a straight line with displacement s(t), velocity v(t), and acceleration a(t). Show that a(t) = v(t) dv/ds.
asked by alyssa 
logarithmic differentiation
How do you find the logarithmic differentiation of y = x^cos x ?
asked by Ashley 
literacy skill
why does children with schizophrina finds it extremely diddicult to manage their everyday life
asked by marlyn 
chem 106 xtra credit!!**
what is EDTA and why is it added to salad dressings and many other processed food stuffs?
asked by sammy jo 
Chemistry
I need to determine the "percentage composition unknown" whatever that is. My current data: a) mass of test tube and foil cover: 7.5323 g b)temp of water bath: 375.65 K c) mass of test tube and foil and gas as sample: 7.5423 g d) barometric pressure:
asked by Selina 
US History
25. The views of President Hoover and President Roosevelt on the best ways to solve the problems of the depression. Describe some actions they took to back up these views. (The first part of the question doesn't make sense to me, but that's how it's
asked by mysterychicken 
algebra
Write the equation for this situation: the value, v, in hundreds of dollars, of Bob’s stamp collection is 12 dollars more than 1/3 of the age, t (in years). Then graph the equation and use the graph to determine the value of Debbie’s coin collection if
asked by franklin 
math
5.15 as fraction or mixed number?
asked by liiy 
probability
Mr. Spark has problems starting his two cars during the winter. He decided to record the number of times each car starts during a 30day period. He recorded the following information. His Hyundai started 18 times. His Subaru started 20 times. Both cars
asked by jj reddick 
math
find p 160/p=21
asked by Rivan 
math
fran made a rectangle with 36 square tiles.the sum of the length and width is 15.what are the length and width of her rectangle?
asked by carol 
science
What policies would you recommend to these countries, assuming their desire to achieve a sustainable society
asked by candiace 
math
The scissor lift forms rhombus PQRS with PQ= (7b5) meters and QR= (2b0.5) meters. IF S is the midpoint of Line RT, what is the length of line RT
asked by alex 
math
How do I write 2.59 as a percent?
asked by liiy 
ALGEBRA
I also have an answer for this one. Just need to be sure. Says to solve then graph. x +9>2; x + 9  9> 2  9 x >  7. I believe this means anything to the right of 7 could be a solution. I would graph this with an open circle at 7 and shade to the right
asked by Jessica 2 
Algebra
..Help me with these problems.. x/4=2x+3/15 21/y8=3 11u/6=u+14
asked by Kayla 
college
If 75 grams of ice at 0 degrees celsius were added to 1.5 Liters of water at 75 degrees celsius, what would be the final temperature?
asked by Anonymous 
Math  determinants
 x 5 2  6 4 1  = x(squared) + 22x  1  3 1 x  Solve for x.
asked by Kye 
science
Evolucion and origen de la vida
asked by Laura 
math
an equivalent fraction to the fraction 6/54 would be a) 12/60 b) 7/72 c) 5/45 d) 1/10 would the answer be c?
asked by m 
Econ
Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.
asked by Sasha 
US History
How did Britain's location help that nation to avoid a German invasion during World War II? Thanks MC
asked by mysterychicken 
chemistry
What volume of a 3.70 M KI stock solution would you use to make 0.400 L of a 1.25 M KI solution?
asked by MaryBeth 
science
what is the walker circulation of normal & El nino conditions? help me please!!!!!!!!!!!!!!!!
asked by majenta 
Algebra
The area of a rectangular athletic field is represented by the expression 48x^4 + 32x^3  72x square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense Òlength times widthÓ) of the athletic field. Include
asked by Jordyn 
chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.95°C. What is the solution's molality?
asked by MaryBeth 
Algebra
The area of a rectangular athletic field is represented by the expression square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense Òlength times widthÓ) of the athletic field. Include correct units with your
asked by Jordyn 
Calc
Find the f'(3) of F(x)=9(sin(x))^x
asked by Adam 
science 5th grade
what steps does the body take to digest milk thanks
asked by Anonymous 
logarithmic differentiation
How do you find the logarithmic differentiation of y = xcos x ?
asked by Christina 
Chemistry
50 ml of 5 M H2SO4 react with excess BaCl2 to Make 40 g of BaSO4. a.) What is the theoretical yield of BaSO4? b.) What is the Percentage yield of BaSO4
asked by Bert 
adult education
political cartoon in 1994 in South Africa would most likely depict shackles being removed off a voter in order to express
asked by Anonymous 
chemistry
Suppose you were asked to determine the exact acetic acid concentration in an acetic acid solution that was about 50% acid?
asked by Myisha 
science
which of the following biomes would receive the most yearly rain? A desert B rainforest C grassland D coniferous forest
asked by chidera 
chemistry
How many calories does it take to convert 22 grams of liquid water with a temperature of 48 degrees C to steam?
asked by Rachel 
chemistry
Which term in the following reaction would not be included in the equilibrium expression? 2 Na3PO4 (aq) + 3 MgCl2 (aq) → 2 Mg3(PO4)2 (s) + 6 NaCl (aq)
asked by barbra 
math
Stephen said that the ratio of his mortgage to the sales price of his house is 7 to 6. Is this reasonable? Explain your answer. I said yes it is reasonable. Stephen would pay 7 dollars for every 6 he borrowed. We don't know the sales price or how long the
asked by m 
Calculus
Find all extrema, inflection points, and asymptotes where applicable f(x)= 2x^312x^2+18x I got 0, 8 for extrema 2, 0 for I.P and I don't know how to find asymptotes
asked by Dan 
Physics
Suppose I apply a force to an initially motionless object. I push on the edge at an angle of 30 degrees. What is the torque on this object in terms of r and F?
asked by ashley 
AP Calculus BC
Use a graphing calculator to find how many widgets to make in order to maximize profit. The price (p) of one widget is given as a funtion of the number sold (n) as p=20e^[(n^2)/40000]and the total cost (c) to make n widgets is given by C = 2n^2 + 2000/( n
asked by Michael 
algebra 1
help me please What is the smallest solution to the inequality 4 (x 1) > 16?
asked by jazz 
health
The patient, 78yearold female with NIDDM, is seen in the physician’s office today for evaluation of a left heel wound. After evaluation, the physician diagnosed the patient with diabetic foot ulcer due to peripheral vascular disease. The physician
asked by liu 
math
21.a. which of these number is a multiple of 10? A 35 B 40 C 45 D 101 b. how can you fine the answer for part a just by looking? 22.a. A dime is what fraction of a dollar? b. A dime is what percent of a dollar? 23. washington school cost about $12,350,000
asked by jojo 
algebra 1
f(x)=[2x1] graph the function state the range and domain.
asked by Sam 
algebra1
Write the slope intercept form for a line of fit.
asked by Sam 
Thara
i. On February 27th, the company sold goods on account to CUSTOMER, $1,800. The goods had a cost of $900. Dungy uses a perpetual inventory system. ans> A/R (debit) $1800 Sales (credit) $1800 Cost of Goods Sold (debit) $900 Merchandise Inventory (credit)
asked by accounting 
Literature
Please summerize and help me to understand M.H.AbramsStructure and Style in the Greater Romantic Lyric? mail me please,thank you for your concern.
asked by sharif 
math
the width of the field is 3/4 the length and the radius of the center circle is 1/10 the width.what are the dimensions of the soccer field,given the perimeter is 420m?
asked by luzagrace 
ALgebra
a swim club requires a $120 membership, plus $4 each swim. How much would a person pay to swim 35 times?
asked by mike 
Pearson
Calculate the acceleration due to the rotation of the Earth of a person in a location 22° northern geographical latitude. Use R Earth = 3,680 km for the value of the radius of the Earth.
asked by Crystal 
calculus
solve (1/m)=(m34)/2m^2
asked by renee 
Math
How do I make a bar graph with this? Mass Distance Mass Distance Empty Full 161 456 420 546 161 273 420 455 161 456 420 456
asked by Alice 
chemistry
A stock solution is prepared by adding 26 mL of 1.1 M K3PO4 to enough water to make 30 mL. How many moles of K+ are in 21 mL of the stock solution?
asked by Ashley 
english
it is not unusual for writers to confuse advers and adjectives how did the material in my writinglab help reduce the possibility of confusion describe the strategies you have developed to avaoid confusing the use of adverbs and adjectives in the future
asked by shelia 
College
What is one strength you see in the current U.S. health care system? What is one weakness you see? List and describe one of the challenges facing the U.S. health care system.
asked by Tony 
grammar
What are the nouns in this sentence? 1. Every section of the United States has scenes of natual beauty. 2. Southern coastal cities are proud of their sandy beaches. 3. The citizens of every state take pride in ther charm of their won state.
asked by alex 
Music Theory
Explain to me how to get information on the computer about higher pair notes
asked by Toni 
math
John who is an amateur golfer spends 3 hrs a day practicing golf. What percentage of his waking hours does John spend practing golf if he sleeps 9 hours a day. PLEASE SHOW WORK.
asked by paully 
Information Technology Infrastructure.
Identify at least three difficulties that a DBMS overcomes for the business enterprise. Name two additional problems that are caused by relational DBMS technology. Justify your choices.
asked by Shawnda 
physics
find the magnitude and direction of a combination of 48N east and 14N north.
asked by tasha jones 
social studies
anyone know social studies?
asked by hayhay 
math
Using the digit 2 and 1. Write a fraction greater than 1/3
asked by Sara 
Math
Using the digit 9 and 1. Write a fraction less than 1/10
asked by Sara 
Social St
What were the land like in the colonial time of Newyork and what kind of Indians Already lived there??/
asked by S. 
Sociology
I do not understand the reading"what happened to the American Social Compact?" of Robert Reich although I have read it many many times. Could you please explain it in main ideas? please help me.
asked by Eneida 
Math
make F the subject: e=3f/1+2f
asked by Astri 
algebra
Solve this equation 3(a+2)+5=2a+4
asked by Marie 
physics
2.0g bullet fired with speed of 44.5m/s what is the kinetic? is there any conversions involved?
asked by Help!!!! 
Social Civics
Today a worker's right strike A. cannot be limited in any way B. is not legally reconized under any circumstance C. can be limited by injunction under certain circumstances D. none of these
asked by Mallory 
Englis just one line
please corret this line. But in fact their actions and words worth nothing; it is their wealth which hides all their weakness.
asked by sham 
math pleaseee help!!!!!!!!!!!!
what is the best parking space/shortest that would take the from store 1 to store 2 and back to the car?use the following information: the distance between store 1 to store 2 is 25 yds wide. driveway between the sidewalk and parking lot is 10 yds this
asked by me 
Math
How do you change a fraction into a decimal besides the way of dividing the numerator by the denominator?
asked by Sam 
2nd grade
jose worked for 13 minutes weeding the garden. when he has worked 20 minutes he will get a dollar, how many more minutes does he need to work to get the dollar?
asked by Anonymous 
math
10. $10.00$5.46 11. 36,024  15,539 12. 43,675 + 52,059 19. 3.75 + 2.5 + 04 20. 42.257.5
asked by jojo 
math
21.a. which of these number is a multiple of 10? A 35 B 40 C 45 D 101 b. how can you fine the answer for part a just by looking? 22.a. A dime is what fraction of a dollar? b. A dime is what percent of a dollar
asked by jojo 
Psychology
Why do you believe that researchers would want to see if there isa correlation rather than just fully testing ech variable?
asked by Andrea 
math
25. is 16 a prime number? why or why not? 27. which of these numbers is a factor of 12? A 0 B 6 C 8 D 24
asked by jojo 
math
John who is an amateur golfer spends 3 hrs a day practicing golf. What percentage of his waking hours does John spend practing golf if he sleeps 9 hours a day. PLEASE SHOW WORK.
asked by paully 
chemistry
Answers for copper has a density of 8.92g/cm3 and nickel has a density of 8.90 . which one is denser
asked by Anonymous 
spelling
what is the correct abc order for sister's sisters sisters'
asked by bill 
TEACHING
HOW DO DUE PROCESS RIGHTS DIFFER FOR PROBATIONARY AND TENURED TEACHERS
asked by GREG 
Calc
Find f'(7) for f(x)=6x^ln(x)
asked by Adam 
chemistry
If the first pKa of H2S is 7.0, what is the pH of a solution containing 10% H2S and 90% HS?
asked by noell 
grammar
need help editing and grammar for this journal Journal # 4 David Renaldo Monday, November 1st 2013 These past few weeks have been chaotic for me. I started to believe that my parents were starting to give me the independence which I think I deserve. Now I
asked by hasyr 
Math(Please check)
Find the domain of the following rational function. R(x) = 3x^2 / x^2 + 2x  48 (x+8)(x6) So the domain is x cannot be 8 or 6. Am I correct?
asked by Hannah 
physics
the heating effect of the fuse wire is caused by... a) emmision of moving electrons by stationary atoms b) absorption of moving electrons by stationary atoms c)collisions by moving electrons and stationary atoms thanks
asked by peter 
chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
asked by MaryB 
English
Hi Can somebody tell me if this is correct? The question is, find lines that Shakespeare enjoy by commenting on the play itself. HAMLET (to FIRST PLAYER) 'Tis well. I’ll have thee speak out the rest soon. (to POLONIUS) Good my lord, will you see the
asked by Joey 
Physics
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth? (Use any variable or symbol stated above along with the following as necessary: G for the
asked by Oscar 
college accounting
Jim’s Landscaping is in a business of maintaining and improving yards in the surrounding areas. The company bases its overhead cost budgets on the following data: Variable overhead costs: Supplies $4 per yard Machine maintenance $2 per yard Chemicals $6
asked by Xan 
social studies
I need a web cite for a essay on the history and how Pioneer wooden toys are made.I've looked but can't find a cite on how they are made.
asked by Tony 
econ312
Are you in favor of the President Obama's public health care plan?
asked by larry 
science
what is the structure formula for the acrylate ion?
asked by karen 
Algebra
Hi. I have an answer for this and just need to confirm it. 2x+5(less than or equal to sign here)x + 6. I minused the x's on both sides of the greater then equal to sign; x +5 (greater then or equal to sign) = 6; x +55 (the sign here) 65 gives me x
asked by Jessica 
science
what is the walker circulation of normal & El Nino? help me please
asked by majenta 
physics
Calculate the acceleration due to the rotation of the Earth of a person in a location 48° northern geographical latitude. Use REarth = 3,678 km for the value of the radius of the Earth.
asked by sam 
social studies
why did Fred Riggs revisit his theory of prismatic society?
asked by theresa 
math
0.70 as a percent?
asked by liiy 
Pre CAL!! Please HELP
find the solutions of the equation that are in the interval [0,2pi) (a) sin2t+sint=0 (b)costsin2t=0
asked by Hayli 
English: Vocab
Unctuous  full of unction; especially : revealing or marked by a smug, ingratiating, and false earnestness or spirituality I don't understand this. Unction means : use of oil or ointment Could someone explain this in simpler words.
asked by Amy 
math
if 1790 maga watts of power,out of 3000 mega watts generated by a power utility, reach the destination, what percentage of the generated power reaches its destination. please show work
asked by paully 
Chemistry
The only strongly electropositive metal that will not form a saline hydride is what element?
asked by Brandi 
Algebra, finding the intercept, help?
How do you find the x and y intercept of 3x+0.5y=6? I know you set x and y to 0.. and then divide by the other variable's number. I think? Could somebody explain how to find the intercepts of this problem? Thank you Allyson
asked by Allyson 
7th grade
Can u show me a timeline for social studies starting with events from 1914
asked by Gianni 
derivative
How do you find the derivative of F(x) = root5(3 + 5 x + x^3)?
asked by Anoymous 
calculus
(10/((n^2)1)+((2n5)/(n1))=(2n+5)/(n+1)
asked by renee 
Math
If n ÷ d gives a display of 16.8, does d\n? Why
asked by Megan 
HELP math
what single discount is equivalent to 2 successive discounts of 15% and 7%.....PLEASE SHOW WORK
asked by paully 
algebra
x/14+12=3x8.5
asked by Dylan 
algebra
x/14+12=3x8.5
asked by Dylan 
Science
Ok,I need a list of all the Acids and Alkalis you can think of. Thankyou :)
asked by Lozzi 
Math
The following function f is onetoone; find its domain and range. f(x) = 5 / x+3 Domain = x cannot be 3 Range= I do not know how to find this.
asked by Hannah 
English
Please correct this paragraph. please.. there is no flow in the second paragraph .plz help It is a very interesting and funny story. The writer of the story Francois Rabelais tells us about the adventure of the two giants, Gargantua and Pantagruel in
asked by sana 
US History
21. Explain how Roosevelt might have used data from graphs that showed the United States' Economy (GNP and Personal Income) during the 1932 presidential campaign. I need help answering this. Thanks MC
asked by mysterychicken 
Algebra
How many total Roots are in this polynomial equation? (x4)^5(x^211)(x^2+49)=0
asked by Asheley 
Europe
this time of new ideas and rediscovery is called the....?
asked by hayhay 
English
1. Cows provide us with milk. 2. Cows provide milk to us. (Ae both the same?) 3. A cow can make about 12 kilograms of waste in a day. 4. A cow can make about 12 kilograms of waste within a day. (What is the difference between #3 and #4? The use of 'in' and
asked by rfvv 
Math
Using only the digit 5 and 1. Write a fraction greater than 1/3
asked by Sara 
Math
Using the digit 9 and 1. Write a fraction greather than 1/3
asked by Sara 
Math
Using the digit 5 and 1. Write a decimal less than 0.3
asked by Sara 
science
what is the magnitude of the excealaration that is produced when the bracks of a 2.4 times 10 to the 3 power Kg car apply to a 3.2 times to to the power of 3 N force to stop the car..?
asked by larry 
physicsacoustics
1.A wall between two rooms is 20 x 9 ft. The wall construction has Transmission Loss 50 dB at 1000 Hz. In the wall is a small window of size 4 x 2 ft. The window has a tested Transmission Loss of 20 dB at the same frequency. The receiving room has 200 ft^2
asked by sandhu 
Social Studies
Which New England colonies had the most "exciting" events
asked by S. 
math
Correct or not correct? 1.) 4.4% = 0.044 2.) 6.3% = 0.063 3.) 79.7% = 0.797 4.) 0.03% = 0.003
asked by liiy 
math
what is the best parking space/shortest that would take the from store 1 to store 2 and back to the car?use the following information: the distance between store 1 to store 2 is 25 yds wide. driveway between the sidewalk and parking lot is 10 yds this
asked by help 
English
Ms. Jefferson will not be back in school until she is (well). When I sat down on the couch, my sister moved (over). Did you (test) the batteries before you installed them? I have to tell if the word in () is a verb, adjective, adverb, preposition, or
asked by Jim 
science
Consider the populationsituation in Germany; very low birth rates, an aging population, and eventual decline in overall numbers.
asked by candiace 
modern world studies
how did china and japans decisions to respond to the west affect its foreign and domestic affairs?
asked by susie 
International Business pratice
What drive business internationally?
asked by mamadou 
Earth Science
What are the effects radiation has on the heating of land and water? Thank You.
asked by Anon 
American Government
Is this statement true: The Secretary of Defense could never become President.
asked by Andrew 
math
2/9 as percent would I dived 9 into 2? Which would become .2 repeating right? Then what???
asked by liiy 
agricultural science
how to prepare accommodation for a mother snd young poultry
asked by Mary 
Grammar
Which is the correct answer?  your parents come from El Salvador? a.Are b.Do c.Does
asked by Patty 
english
In Pamela, or Virtue Rewarded, which some consider to be the first English novel, Pamela's master attempts to seduce her. How does the story end?
asked by danny 
Math
ý22xn is between 80 and 85 what is n?
asked by Alex 
calculus
Find all critical numbers: (x^2+12)(9x^2)?
asked by Denzel 
algebra 1
heip me I tried everything 4(x 1) > 16
asked by jazz 
Social Studies
Which one from the 13 colonies, can I write the most and interesting, eyecatching facts about ?????
asked by S. 
us history
explain the role of the U.S. in the emerging global community.
asked by Anonymous 
math
How do I write 2.59 as a percent?
asked by liiy 
Honors Algebra
what is the area of a square that has 48 x
asked by Robert 
math
A computer company gives a discount of 10% on a new piece of software. If it makes a profit of 4%, what percent does the marked proce exceed the cost price....please show work
asked by paully 
Language
we are reading a book called the children of wilesden lane and i don't have the book so i don't know what "the last paragraph of chapter three" is PLEASE HELP!!!!
asked by Maddie 
alegebra
x+648*19273/20467(>=)155678*564+2368 This is REALLY hard!!! Please help!!!
asked by Tori 
AP Chemistry
What is the Dumas Method in regards to the molas mass of a gas?
asked by D 
math
What should the selling price be for an SUV with a cost of $29,865 and a 42% markup based on selling price?
asked by Tp2010 
Porter model
Identify the competitive forces in Porterâ€™s model. What affect might these forces have on a business? What can a business do to respond to these forces?
asked by Dee 
PhysicsPlease help explain
What happens to a rollercoaster's motion in terms of energy when it goes over a second hill that is higher than the first hill.I think it is because the kinetic energy does not have the momentum so when converted into PE, it can't make it over a higher
asked by Ashley 
Social Studies
Which colonies had the most events??? n(Interesting to write About)
asked by S. 
Math
Using the digit 9 and 1. Write a decimal less than 0.3
asked by Sara 
Math
Using the digit 5 and 1. Write a fraction less than 1/10
asked by Sara 
Science
When learning about types of energy what are the types of energy for: A. a lit match, yoyo, bicycle, trampoline, apple, lightbulb, cooker, moving bullet, nuclear bob, hairdryer, solar panel,campfire, car, human, tv, mobile phone, thanks
asked by Sue 
science
what is the walker circulation of normal & El nino conditions? help me
asked by majenta 
Education
what is the difference between terminating a teacher and nonrenewing a teacher's contract
asked by Natalie 
Math
81 is 56% of what?
asked by Khalil 
English
How did boy come into modern English
asked by Melanie 
Biology/help please
I am a being from another planet, please explain to me which is alive: a clock or a fish? Compare the two, similarities and differences.Can you help me answer this question ? thank you.
asked by marie 
math
3x + 4 = 5x  7
asked by ed 
Science
What is a Lysosome? THANKS! :)
asked by Sofi Lyna 
English
I forgot to include these sentences. I really hope you can look at them, too. 1)I’ve never played any digital games on my cell phone but I could. I can’t surf the net at school but we use a drawing programme called Autocad during our design and
asked by Franco 
mgt 435
Discuss how leaders identify and formulate effective change to address stakeholder expectations. Analyze how organizations need to improve with respect to employee and customer responsiveness to meet objectives
asked by ASHY 
English: Vocab
would it make sense to write: he stimulated his friend
asked by Amy 
math
100(20*40)
asked by mm 
Math
Using the digits 2 and 1. Write a fraction less than 1/10
asked by Sara 
math
change ratio to lowest terms.
asked by timmy 
art/101
need an example of appendix a
asked by dana 
college
creating a slide on debunking gender misconception any tips
asked by james 
math
what is 68% of 13
asked by Anonymous 
science
why does the addition of acetone cause the polystyrene to change shape?
asked by Karen 
agricultural science
how to prepare accommodation for a mother and young cattle?
asked by Mary 
history
aren't sustainable and renewable kind of the same thing?
asked by JonG 
Math
multiply and simplify 5ib.6oz. * 5
asked by Joe 
Math
2 2/3 + 1 1/2=
asked by Stephanie 
Math
2 3/4  6 5/9=
asked by Stephanie