Questions Asked on
November 23, 2010

physics
a 3.5 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the springs relaxation length.The block then travels over a horizontal floor with coefficient of kinetic friction 0.25. The friction
asked by help 
physics
A 20g plastic ball is moving to the left at 30 m/s. How much work must be done th cause the ball to move to the right at 30 m/s?
asked by nathan 
chemistry
what is the cation and anion of Na3PO4? thanks
asked by rebekah 
chemistry
The pH of a 0.55M aqueous solution of hypobromous acid, HBrO, at 25°C is 4.48. What is the value of Ka for HBrO? how do you solve for Ka?
asked by jessica 
Physics
A battery of three cells in series each of emf 2v and internal 0.5 ohms is connected to 2ohms resistor in series with a parallel combination of two 3ohms resistors (a)draw the circult diagram (b)the effective of external resistance (c)the current in the
asked by Emmanuel 
chem class
A 25.00mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 10.0 mL of KOH is ???? M.
asked by richard 
Chemistry
If the mass percentage of water in FeSO4 X H20 is 45.3%, find the number x?
asked by Azur 
science
Two forces, of magnitudes F_1 = 85.0 N and F_2 = 45.0 N, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. Initially, the center of the block is at position x_i = 4.00 cm. At some later time, the block
asked by BRIJ 
CHEMISTRY
For propanoic acid (HC3H5O2, Ka = 1.3 105), determine the concentration of all species present, the pH, and the percent dissociation of a 0.170 M solution. PLEASE HELP ME DO THIS PROBLEM.
asked by AMANDIP 
chemistry
The Ka of hypochlorous acid (HClO) is 3.0 × 108 at 25°C. Calculate the pH of a 0.0385M hypochlorous acid solution? i got help with this problem, but i don't get where one of the numbers came from (3.4 x 10^5)??? i tried makeing 3.0 x 10^8 the x but i
asked by jessica 
chemistry
The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is ?.
asked by ben 
chem
how do i know what the ions present are of this formula: Na3PO4 what are the anions and what are the cations? how do you know
asked by hannah 
Chem
Sodium phosphate reacts with copper (II) chloride in a precipitation reaction. What mass (in grams) of the precipitate will form when 325 mL of 0.5000 molar sodium phosphate reacts with 41.5 cL of 0.6000 molar copper (II) chloride.
asked by Heather 
chemistry
The aciddissociation constant, Ka, for gallic acid is 4.57 × 103. What is the basedissociation constant, Kb, for gallate ion?
asked by jessica 
physics
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27.1° above the horizontal. One child, with a mass of 42.4 kg, is hanging 1.22 m along the branch from the tree trunk. The
asked by michelle 
physics
A uniform magnetic field points North; its magnitude is 1.5 T. A proton with kinetic energy 8.0x10–13 J (5.0 MeV) is moving vertically downward in this field. What is the magnetic force acting on it? I have no idea where to start with this question, can
asked by Trace 
chemistry
The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is i solved it but my answer is wrong. the right one is 1.97. am i missing a step? moles of HCl left over = (moles of HCl) – ( moles of KOH) moles of HCl left over =
asked by ben 
Early childhood
what is withdrawing or withholding reinforcement
asked by Theresa 
chemistry
The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is __________. i know the answer is 7.00, but im not sure how to solve it, do i create an ice chart?
asked by laney 
AP Chemistry
Anthraquinone contains only carbon, hydrogen, and oxygen and has an empirical formula os C7H2O. The freezing point of camphor is lowered by 22.3 C when 1.32 g anthraquinone is dissolved in 11.4 g camphor. Determine the molecular formula of anthraquinone
asked by Anonymous 
statistics
The average math SAT score is 500 with a standard deviation of 100. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this school was selected, and the mean math SAT score was 530. Is
asked by Nancy 
Physics
During the Olympic ice competition, Boris (m = 75 kg) glides at 1.8 m/s to a stationary Juliette (52 kg) and hangs on. How far will the pair slide after the “collision” if the coefficient of kinetic friction between the ice and their skates is .042? My
asked by Mike 
MECHANICS
A string of length l carries a small pulley C from which is suspended a load W. The string hangs between two vertical walls which are at distance d apart.The end A is higher than end B by height h.find position of equilibrium defined by angle X. X is angle
asked by ACD 
Calculus
Oil from a ruptured tanker spreads in a circular pattern. If the radius of the circle increases at the constant rate of 1.5 feet per second, how fast is the enclosed area increasing at the end of 2 hours?
asked by Karol 
college chemistry
how do you balance this redox equation? Co(OH)2(aq) + Na2O2(aq) → Co(OH)3(s) + NaOH(aq)
asked by sparkle 
Chemistry
If the reaction Fe2N(s) + 3/2H2(g) > 2Fe(s) +NH3(g) comes to equilibrium at a total pressure of 1 bar, analysis of the gas shows that at 700. and 800.K, PNH3/PH2=2.165 and 1.083 respectively, if only H2(g) was initially present in the gas phase and
asked by Katie 
Chemistry
X rays of wavelength 2.63 were used to analyze a crystal. The angle of firstorder diffraction (n = 1 in the Bragg equation) was 16.14°. What is the spacing between crystal planes?(in pm) Do I just plug everything in the Bragg's equation? nλ=d*sinθ n=1
asked by kay 
chemistry
The pH of a solution that contains 0.818 M acetic acid (Ka = 1.76 x 105) and 0.172 M sodium acetate is __________. The Ka of acetic acid is 1.76 × 105.
asked by jack 
Physics
A load of 54 N attached to a spring hanging vertically stretches the spring 4.9 cm. The spring is now placed horizontally on a table and stretched 14 cm. What force is required to stretch it by this amount?
asked by Kristen 
the president and the bureaucracy
legally, the bureaucracy derives the general authority for its programs from
asked by sandra 
Chemistry 20
Each of the following solutions has a concentration of 0.1 mol/L. Compare the hydroniumion concentration and pH in each pair, and explain why they are different. a) H2SO4(aq) vs. H2SO3(aq) b) H2S(aq) vs. NH3(aq)
asked by Anonymous 
Help Me
Which of the following statements regarding TERM insurance is true ? A. It provides temporary protection B. It builds up cash value C. It pays more than the face amount D. It's more expensive than straight life
asked by Insurance Problem 
chemistry
Calculate the value of [H3O+] in a 0.01 M HOBr solution. Ka = 2.5E9 I'm having a problem with just writing the equilibrium expression. do you add H2O to the HOBr? HOBr + H2O H3O+ + OBr but then you could say that because HOBr = .01 M, then 0Br = .01 M,
asked by Audrey 
physics
An 8.00 g bullet is fired into a 250 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 1.8 m from the bottom of the table. Determine the initial speed of the
asked by kaitlyn 
English 2
In "It Can't Be Helped," why does Mama destroy her dishes? a)She does not like the pattern on the dishes, which are chipped anyway. b)Most of the other dishes have been broken in the move. c)She doesn't want the dealer to take advantage of her family's
asked by Harry 
chemistry
The reaction, cyclopropane propene (isomerization), was observed to have rate constants k = 0.000213 s1 at 477 °C and k = 0.0328 s1 at 577 °C. What is the value of Ea expressed in kJ mol1? Round your answer to 3 significant figures.
asked by bobjahng2 
chemistry
What mass of carbon dioxide, water, and sulfur dioxide can be produced from the combustion of 1.5793g of C7H12S?
asked by Josh 
Biology HW HELP
hey i need help for some of these questions and on pedigree with the help of this story......This is the story of Grandma and Grandpa Flipnob, and their clan! They were married way back in 1933 and have been just like newlyweds ever since. From their
asked by tarkan 
physics
A cylinder contains 3.5 L of oxygen at 350 K and 2.5 atm . The gas is heated, causing a piston in the cylinder to move outward. The heating causes the temperature to rise to 640 K and the volume of the cylinder to increase to 9.5 L. What is the gas
asked by IsabelA 
science
Which planet by itself contains the majority of mass of all the planets? saturn jupiter uranus venus earth
asked by sammie 
Physics
If the ball is released from rest at a height of 0.71 above the bottom of the track on the noslip side, what is its angular speed when it is on the frictionless side of the track? Assume the ball is a solid sphere of radius 3.4 and mass 0.14 . How high
asked by Ree 
Math HELP
I have my answers at the bottom but please do these questions so I can check my answers. Check my answers as well. Subtract these fractions. !Reduce them! 1. 5/7  3/10= 2. 11/18  5/12= 3. 1/3  1/6= 4. 7/12  1/16= 5. 7/8  3/10= 6. 7/8  1/12= 7. 7/10 
asked by Pratigya 
physics
A hunter aims directly at a target (on the same level) 85.0 away. If the bullet leaves the gun at a speed of 188 , by how much will it miss the target?
asked by steph 
chemistry
calculate the weight of crystal formed on cooling 80 gm of saturated solution from 60 degree Celsius to 30 degree Celsius. solubility of salt at 60 degree Celsius and 30 degree Celsius are 132 and 95 respectively.
asked by hey 
Chemistry
20.2 mL of 0.234 M FeCl3 is added to 42.5 mL of 0.453 M NaOH. Iron(III) hydroxide precipitates. NaCl remains in aqueous solution. 1) What mass (in g) of Fe(OH)3 should precipitate (assuming 100% yield)? 2) How many moles of the excess reactant remain after
asked by Lilly 
Chemistry
How many joules of energy are necessary to melt 46.0 grams of ice?
asked by Cristine 
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 2.6 times her weight as she goes through the dip. If r = 20.0 m, how fast
asked by Colin 
calculus
6.A manufacturer of DVD players has been selling 800 each week at 150$each. From a market survey it is discovered that for each $5 reduction in price, they will sell an extra 40DVD players each week. a)What is the demand function? b)How large a reduction
asked by cynthia 
Physics
An aluminum cylinder with a density of 2.70 g/cm3 has a volume of 3.8 ¡¿ 105 m3. If the cylinder is suspended from a scale and immersed in an unknown fluid, the scale reads 0.581 N? What is the specific gravity of the fluid?
asked by David 
geometry
an angle's measure is twice the measure of its complement. The larger angle is how many degrees greater then the smaller angle?
asked by Janelle 
chemistry
what is the pH of a solution that is .15 M in HOCl and .25 M NaOCl after .05 mol HCl/L has been bubbled into the solution? this is what I did: HOCl + H2O > H3O+ + OCl .15 .25 .05 +.05  .1 .30 3.5E8=[H3O][.3]/[.1] H3O=
asked by Audrey 
chem class
What is the concentration (in M) of hydroxide ions in a solution at 25°C with pH = 4.282?
asked by ben 
physics
A shotputter throws the shot with an initial speed of 16.0 m/s at a 36.0 angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.00 m above the ground
asked by steph 
Physics
A pilot wishes to fly to a point 450 km due south in 3 hours. A windis blowing from the west at 50 km/hr. By means of a vector diagram, compute the proper heading and speed that the pilot must choose to achieve this objective.
asked by Shayne 
chemistry
If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid [HNO2(§¤)] is added, what would be expected to happen? HN3(§¤) + 2 H2O(§¤) + heat N2H4(§¤) + HNO2(§¤) hydrazoic hydrazine nitrous acid acid
asked by jackie 
physics
A 11.0 g bullet is fired horizontally into a 108 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring of constant 151 N/m. The bullet becomes embedded in the block. If the bulletblock system compresses
asked by please help 
Physics
The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m. 2) What is the wavelength of the wave? 3)What is the frequency of the wave?
asked by Patrick 
chemistry
The reaction of aqueous zinc chloride and aqueous sodium oxalate is represented by the balanced ionic equation. Zn2+(aq) + 2Cl(aq) + 2Na+(aq) + C2O42(aq) → ZnC2O4(s) + 2Na+(aq) + 2Cl(aq) Give the balanced net ionic equation for the reaction. Include
asked by Amrita 
calculus
A certain clock has a minute hand that is 4 inches long and an hour hand is 3 inches long. How fast is the distance between the tips of the hands changing at 9:00?
asked by Chelsea 
chemistry
combustion of 0.356g of an unknown metal sample in oxygen gives 0.452g of an oxide in the form of mO2, Identify the unknown metal?
asked by Brittany 
physics
A hunter aims directly at a target (on the same level) 85.0 m away. If the bullet leaves the gun at a speed of 188 m/s, by how much will it miss the target?
asked by steph 
Physics
A load of 54 N attached to a spring hanging vertically stretches the spring 4.9 cm. The spring is now placed horizontally on a table and stretched 14 cm. What force is required to stretch it by this amount?
asked by Kristen 
chemistry
What is the final concentration when 25ml of 0.500 m hcl is diluted to 500ml
asked by Anonymous 
chemistry
The given reaction, cyclopropane propene (isomerization), follows firstorder kinetics. The halflive was found to be 4.57 min at 796 K and rate constant was found to be 0.0328 s1 at 850 K. Calculate the activation energy (in kJ/mol) for this reaction.
asked by bobjahng2 
Chemistry
A gas has a volume of 4.00 at 0. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following, if (number of moles of gas) and are not changed? 290 L
asked by Brittany 
math
can you write 4+4+3=11 in a multiplication sentence?
asked by Nadia 
physics
Suppose a record turntable rotates at constant angular velocity. a) Does a point on the rim have radial and/or tangential acceleration? b) If the turntable's angular velocity increases uniformly, does the point have radial and/or tangential acceleration?
asked by henry 
chem
would bromocresol green be a good indicator for the titration of CH3COOH against NaOH?
asked by Anonymous 
chemistry half reactions
How do i solve this half reaction with Mg(OH)2(s) > Mg(s)? Complete and balance the displayed half reaction in basic aqueous solution taking into account the electrons. Mg(OH)2(s) → Mg(s)
asked by Confused 
Chemistry
A 19.6 g sample of ice at 10.0°C is mixed with 100.0 g of water at 75.4°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J g1 °C1, respectively,
asked by Anonymous 
chem
you have 100 mL of a saturated solution of Pb(NO3)2 at 0 degrees celsius. If the solution is evaporated to dryness how many grams of Pb(NO3)2 do you expect to remain in the crucible? Im not sure how to do this because i don't have a number to work with
asked by keri 
Chemistry
1 N204(l) + 2 N2H4(l) > 3 N2(g) + 4 H2O(g) If you start with: 5.0 x 10^4 g hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yield)? 2) How many moles of water can be produced? 2) What mass of dinitrogen
asked by Lauren K. 
physics
A moving 2.8 kg block collides with a horizontal spring whose spring constant is 215 N/m (see figure). The block compresses the spring a maximum distance of 11.5 cm from its rest position. The coefficient of kinetic friction between the block and the
asked by help 
Calculus
Oil from a ruptured tanker spreads in a circular pattern. If the radius of the circle increases at the constant rate of 1.5 feet per second, how fast is the enclosed area increasing at the end of 2 hours?
asked by Karol 
chemistry
Ok, I really need to know how to work problems like these so could someone please show me how to set it up?! Given this data: 1. C(graphite) + O2(g) produces CO2(g), delta H = 393.5 kJ 2. H2(g) + 1/2 O2(g) produces H2O(l), delta H = 285.8 kJ 3. Ch3OH(l)
asked by lavonne 
Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if neither reactant is present in stoichiometric excess. Separate your answers by comma. Pb(NO3)2(aq) + 2NaI(aq) → PbI2(s) + 2NaNO3(aq)
asked by Amrita 
Biology
The half life of carbon14 is 5,730 years.how much of an initial amount of this substance would remain after 17,190 years(3 Halflifes
asked by Eileen 
osu
a 50.0 ml sample of a 15% (m/v) solution of H2SO4 is added to water to give a final volume of 250.0 ml. What would the final concentration be?
asked by Kat 
physics
During a “brownout,” which occurs when the power companies cannot keep up with high demand, the voltage of the household circuits drops below its normal 120 V. (a) If the voltage drops to 108 V, what would be the power consumed by a “100 W”
asked by Trace 
Math
The asset turnover of a company is 3.2. The total assets are $32,000.00. What were the net sales?
asked by Mare 
Algebra
Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have
asked by Alg help 
chemistry
Calculate the molar solubility of MX2, if the Ksp=3.3x10^8 how can i solve this problem?
asked by roseanne 
physics
A 2.606 kg block is on a horizontal surface with ìk = 0.160, and is in contact with a lightweight spring with a spring constant of 577 N/m which is compressed. Upon release, the spring does 7.212E1 J of work while returning to its equilibrium position. I
asked by help 
physics
A rock tied to a string is swung around in a circle with a radius of 10 ft. The centripetal acceleration is 16.9 ft/sec2. Calculate the speed of the rock.
asked by drake 
calculus
A certain clock has a minute hand that is 4 inches long and an hour hand is 3 inches long. How fast is the distance between the tips of the hands changing at 9:00?
asked by Chelsea 
Chemistry
Tutors: thanks for your help. Is this how this problem is solved ? A sample of Xenon gas at 20degrees celcius and 0.570atm is cooled to a pressure of 0.100atm. If the volume remains constant what is the final temperature in degree celcius? Solution: Using
asked by Cliff 
chemistry
when 12.76mL of HCl of unknown concentration (but less than the base) are reacted with 15mL of 3.254M NaOH, 1.68kJ of heat are released. What is the molarity of the HCl solution?
asked by serena 
Astronomy
Which one supports the solar nebula theory of the origin of the solar system? a.Disks are rare around young stars. b.Disks are common around young stars. c.The sun is the least massive object in the solar system. d.Planets are round.
asked by Stephanie 
general, organic and biochemistry
when a solution prepared by dissolving 4.00g of an unknown monoprotic acid in 1.00L of water is titrated with 0.600M NaOH, 38.7mL of the NaOH solution is needed to neutralize the acid. What was the molarity of the acid solution? what is the molecular
asked by Ksolo 
geometry
the hypotenuse of a triangle is 24 ft. long. the lenght of one leg is 6ft. more tha the other. Find the lengths of the legs.
asked by Anonymous 
Math
A very strong girl runs 200 miles east for several hours. After a brief rest she runs another 100 miles north. She stops for the night at a local bed and breakfast and the next morning walks 75 miles directly southeast. Find the magnitude and direction of
asked by Kevin 
Chemistry
Calculate K at 25°C for the reactions given below. (a) Zn(s) + 2Ag+(aq) Zn2+(aq) + 2Ag(s) (b) 2H2O2 2 H2O + O2 Given: H2O2 + 2 H+ + 2e 2 H2O ° = 1.78 V O2 + 2 H+ + 2e H2O2 ° = 0.68 V
asked by Lauren 
english
What are winter dreams from the story "Winter Dreams" by F. Scott Fitzgerald? I don't understand what they are or what it means.
asked by Jen 
MATH  gr.8
Write an algerbraic expression to describe the pattern rule for the date in this table of valures. Term# Value 1 6 2 11 3 18 4 27
asked by Vanessa 
Math Algebra 1
Im doing extra credit since my math test didn't go so well but im stuck on a question (Wish i had my math book). Please help. Q: 3.8y  4.7 + 3.8y + 17.5
asked by Shilo 
Physics
A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore? A.8 km/h B.25 km/h C.30.4 km/h D.32.8 km/h
asked by james 
Chemistry
Calculate K at 25°C for the reactions given below. (a) Zn(s) + 2Ag+(aq) Zn2+(aq) + 2Ag(s) (b) 2H2O2 2 H2O + O2 Given: H2O2 + 2 H+ + 2e 2 H2O ° = 1.78 V O2 + 2 H+ + 2e H2O2 ° = 0.68 V
asked by Lauren 
Physics
Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal
asked by Mike 
Physics
A construction worker attempts to pull a stake out of the ground by pulling on a rope that is attached to the stake and makes an angle of 60.0 degrees with the horizontal. Then worker exerts a force of 125 newtons on the rope. What is the magnitude of the
asked by Shayne 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by
asked by Amrita 
physics
The period of a satellite is the primary way that the mass of planets is determined. The equation used for this calculation uses the fact that gravity of the planet provides the centripetal force to keep the satellite in orbit. The distance from the Earth
asked by ck 
physics
this question is about resistors in parallel. If i have a circuit, and it starts at point A with one resistor, then splits to flow to two resistors, and one of those two splits agin, to two more, then they all join again at the end at point B, what
asked by Trace 
chemistry Please help!
I have a big exam tomorrow. Can anyone tell me any easy way to figure out the 4 quantum numbers, n, l, ml, and ms. i still get confused especially with the n and ml!
asked by lavonne 
history
Assess the presidency of Thomas Jefferson. Do his actions in office coincide with his political philosophy?
asked by beth 
Physics
Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal
asked by Patrick 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by
asked by Amrita 
chem
I need major help im not understanding this at all: Complete and balance each of the following equations for acidbase reactions. (Type your answer using the format CO2 for CO2 and Al(OH)3 for Al(OH)3. Use the lowest possible coefficients.) HBr(aq) +
asked by hannah 
Chemistry
1 N204(l) + 2 N2H4(l) > 3 N2(g) + 4 H2O(g) If you start with: 5.0 x 10^4 hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yield)? 2) How many moles of water can be produced? 2) What mass of dinitrogen tetroxide
asked by Lauren K. 
osu
a balloon is filled with .50 moles out of gas at room temp and normal room pressure, the balloon volume would be 11.2L. if you heat the balloon keeping the room pressure and amount of gas unchanging, what would be the effect on the volume of the balloon?
asked by Kat 
Calculus
the integral of sin^3xcos^2x my answer is (1/2)(cosx)^2+(1/4)(cosx)^4+c but this is incorrect, please help.
asked by Lauren 
physics
We confirm the concept of the geothermal effect in an alternative fashion to the discussion in the text. We know that the average rate at which heat is conducted through the surface of the ground in North America is 54.0 mJ/(s m2). Assuming a surface
asked by serena 
Interger Science
Calculate the freefall acceleration of a 20 kg bag of salt.
asked by Maya 
Early childhood
could someone give me a site to read on that deals with when it comes to the developmentbehavioal appoach of these terms. 1. Timeout 2.Sit and watch 3.catch the child being good 4. reminders,redirection,reprimands Ms.Sue I didn't get the sites you sent
asked by Theresa 
Chemistry (URGENT)
T=thickness, V=volume, A=area, m=mass D=density V=m/D Suppose T=V/A is a method used to find the thickness. How may this method be used in finding the size of molecules.? I really need help. Been thinking about it for awhile. Thanks in advance.
asked by John 
math
Take 90 cm as the two sides of a triangle (Line B and C), with an angle of 32 degrees (Degree 'a'). Use the Law of Cosine to find out Line A's length. Round it up to the nearest digit.
asked by Anonymous 
geometry
a triangle has two sides that have lengths of 14 feet and 22 feet. which of the following lengths could not represent the length of the third side... A 8FT B 12FT C 14FT D 20FT
asked by nikki 
Economics
# How can American consumers influence decision makers on fiscal policies? # Explain and discuss if and how this has changed over the past 5 years.
asked by Mike 
English
Can you please check these alternatives I'm not sure of? Thank you very much. 1) The growing anticlericalism in 14thcentury England was due to (caused by) the wealth of the clergy, the rise (birth, development) of a movement of reforms called Lollardy and
asked by Franco 
Chemistry
Please let me know how I am doing with the following three chemistry questions. 1.A sample of a gas in thermometer has a volume of 135mL at 11 degree celcius.Indicat what temperature(in k and degree celcius)would correspond to the foll.volume:
asked by Cliff 
media influences on american culture
Newspapers, once available only in print, have evolved into 24hour multimedia operations. In addition to newspapers, briefly describe the evolution of movies, television, Internet, books and magazines, and media companies throughout the last century.
asked by tisha 
Composition and Communication 1
Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. Use at least five different pronouns, adverbs, and adjectives in your sentences.
asked by Anonymous 
psychology
identify at least four key milestones in the development of cognitive psychology as a discipline
asked by sam 
CHEM 136
A sample of 25.00 mL of 0.100 M HNO2(in a flask) is titrated with 0.150 M of NaOH solution at 25 degrees. 1) calculate the volume(Ve) of the NaOH solution needed to completely neutralize the acid in the flask. 2)calculate the pH for (a)the initial acid
asked by Jefferson 
history
Women in the last fifty years: A. have had fewer legal rights than men. B. have entered the workforce in large numbers and have about the same earning power as men. C. have increased their presence in college and now make up about 40% of college students.
asked by sra 
math
Find the percent. Round to the nearest whole percent. 159 people in favor out of 350 people surveyed.
asked by nikkie 
chemistry
What mass of Zn can be dissolved by 558 mL of 3.01M HCl?
asked by Brittany 
college
Please explain with complete step by step instructions. #8)One type of lawn fertilizer consists of a mixture of nitrogen, phosphorus and potassium. An 80lb sample contains 8 move lbs of nitrogen and phosphorus than potassium. There is 16lb more potasssium
asked by Lee 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formulas and states of all products. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. CoCl2(aq)
asked by Amrita 
chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formulas and states of all products. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. aluminum
asked by Amrita 
ethics
In a business world where information is usually the key to making money, sometimes information that is not available to the public can be considered legally and ethically improper to use in making business decisions. What is insider information? Why are
asked by Anonymous 
chemistry
A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also
asked by Audrey 
Math
Mr. and Mrs Smith have decided to buy new furniture. They have 2 options. The first is to pay cash of $4,200.00, the second is to finance with a 2 year installment loan. They would have to put down 12% with 24 equal payments of $195.00. According to this
asked by Mare 
chemistry
mass= 3.8721g temperature= 102 degrees Celsius volume= 156ml atmospheric pressure= 755.0 mm Hg calculate the molar mass using the ideal gas law
asked by VICKY 
science
HELP ME UNSCRAMBLE THESE LETTERS PAMOUSEEN please
asked by sarah 
math
the space in front of a temple is of length 12 metres and breadth 9 meters .on this space,square tiles 75cm are to be fitted find the number of titles required
asked by aarish 
algebra
Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have
asked by Math is hard! 
algebra
Let f (x)= 2x/3+x (a) State the domain. (b) State the vertical asymptote(s). (c) State the horizontal asymptote. (d) State the yintercept. (e) State the xintercept(s).
asked by Math is hard! 
Math
Rationalize the denominator. Assume all variables represent positive numbers?  245x3 y5
asked by Rachel 
Physicsplease help
You're given a ramp 0.5m in height with a 3m incline. A mass of 1kg is at the top of the ramp and there is a friction of 2N. If the ramp has a force of friction of 2N, what will the speed at the bottom of the ramp be?
asked by Elena 
algebra
Consider the polynomial P(x), shown in standard form and in factored form. p(x)= (1)/(5)x^(3)+(1)/(5)x^(2)+(17)/(5)x+3= 1/5(x+3)(x+1)(x5) (a) State the behavior at the ends (fill in blanks): At the left, as x „_ ¡V„V, P(x) „_ __ (choose ¡V„V
asked by Wizard 
physics
How would you find the coefficient of kinetic friction if you're given a weight of 627 N and theta=45 degrees?
asked by Noelle 
Chemistry
Calculate the percent of carbon, hydrogen, nitrogen, and oxygen in this widely used pesticide, Sevin. The molecular formula is C12 H11 O2 N.
asked by Brittany 
physical science
An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
asked by t.o 
Physics
a turntable is designed to acquire an angular velocity of 38.6 rev/s in 0.5 s, starting from rest. Find the average angular acceleration of the turntable during the 0.5 s period.
asked by Anonymous 
HealthCareAdministration 230
In health care, there are various physiciancentered communication attributes that occur during the patientprovider interaction. Which of the following attributes can be beneficial during the interaction? Which of the following attributes can be
asked by Whitney 
To drwls
I posted some Physics questions yesterday, but no one got the chance to look at them, so can u please go to 2nd page and look through them.
asked by Anabelle 
Math
pls. verify: 4x^3y^2 / 2x^1y^4 = 2x^4y^6 [w^1 / w^3]^4 = 1/w^16
asked by Dexter 
Physics
Question related to a bicycle dynamo and a wheel. Why a current flows through the bicycle lamp when the wheel of the bicycle turns?
asked by Billiez 
Help Please
True or False? Beer and wine are less intoxicating then whiskey.
asked by Linda 
Please Help
The amont financed is equal to the cash price _________ down payment. A. Multiplied by B. Plus the C. less the D. Divided by
asked by Math Question 
MTH 156
On a map, the length of a naturecenter trail is 8.2 centimeters. If the scale is 3 centimeters to 24 kilometers, what is the actual length of the trail.
asked by Barbara 
physics
A horizontal force of 25 newtons pushes a box a distance of 30 meters across the floor. How much work is done by the force?
asked by stephanie 
english
Based on Sir Gawain’s speech, which of the following traits adhered to the code of chivalry? A)courage and humility B)faith and independence C)swagger and fearlessness
asked by Anonymous 
World Geography
Identify the state capital that will be visited by a team from a state capital?
asked by Kaitlyn 
physics
1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x
asked by sandhu 
physics
We consider hemoglobin along a 0.29 m long tube filled with water. The crosssectional area of the tube is 326 mm2. The diffusion coefficient is 7 x 10^11 m^2/s A total amount of hemoglobin of 1.22 x 1012 g is transported in a steady rate along the tube
asked by serena 
US history
In dealing with affirmative action, the Supreme Court has: A. been clear in rejecting the concept. B. been clear in its affirmation of the concept. C. very rarely given detailed interpretations of it. D. has a mixed record of support for the concept. I'm
asked by anthony 
english essay, please proof read
I have to write an essay on the chloera of haiti. For my intro, I have to write explain the subject and why it's important. I haven't written why it's important yet, but I described my subject. Can you please check to see if it's okay. Also, my essay only
asked by jenny 
physics
An animal and its tractor (1330 kg) are pulling a trailer (530 kg) up a 7° hill. The trailer wheels roll freely. What is the magnitude of the force in the coupling between the tractor and trailer when their velocity is 8.7 m/s up the hill and they are
asked by sandhu 
statistics
14.how would you describe this set of data? In other words, how would you describe the “average” score (mean, median or mode and why)? How would you describe the variability (range, standard deviation, or both, and why)? 3 3 3 4 3 2 4 2 3 4
asked by Lola 
Federal Taxation
In 2005 Russell acquired and interest iin a partnership in which he is not a material participant. The partnership was profitable through 2008, and Russell's basis in partnership interest at the beginning of 2009 was $50,000. Russell's share of the
asked by Tonia 
chemistry
A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also
asked by Audrey 
5th grade
what is the smallest number of pencils that are needed to put into jars holding 3,6 and 9 leaving no remainder.
asked by dylan 
ENGLISH
Sally is a teenage girl. She is never seemed to be heard of. If she ever has something to state, she is always cut short. This happens to her all the time and she can't help but speculate if it's done deliberatly. This makes sally feel less essential. What
asked by Monica 
calculus
DIFERENTIATE THE FUNCTION: y=[(x^2)+1][(1x^2)]
asked by gen 
Probability
How could picking three dates at random in the month of April be simulated using a random digit table? (Please show and explain)
asked by Lori 
MATH grade 8
Write an algerbraic expression to describe the pattern rule for the date in this table of valures. Term# Value 1 6 2 11 3 18 4 27 PLEASE explain how you got the answer... Thanks(=
asked by VANESSA 
accounts
pass the journal entries for the following (1) discountd bill of rs.1000 at1% by bank (2) interest allowed by bank rs.5000
asked by mrudula 
physics
A large crate weighing 850 N is slid across the floor of a shop. To move the crate 15 m at a steady spead of 10 cm/s, a constant horizontal force of 80 N is applied to the crate. How much work was done in moving the crate?
asked by Rashad 
ethics
Businesses are intended to make money, and sometimes this means keeping business practices secret. What kind of information does the public have a right to know? What kind of information does a business have a right to keep secret? How do we make these
asked by Anonymous 
Early childhood
could someone give me a site to read on that deals with when it comes to the developmentbehavioal appoach of these terms. 1. Timeout 2.Sit and watch 3.catch the child being good 4. reminders,redirection,reprimands
asked by Theresa 
calculus
differnetitae the function: y= 2x^1/2 + 4x^3/2
asked by gen 
CHEMISTRY
What concentration of aqueous CaCl2 solution freezes at 10.2ºC?
asked by Anonymous 
math
You have just built a swimming pool measuring 12 feet width by 28 feet length and 12.5 feet depth. how much water will it take to fill it to a depth of 8 ft
asked by Carolann 
math
jessica has 24 shirts .1/6 are red.1/3 are yellow.4/12 are green. the rest are blue.how many are blue
asked by liana 
English
i need help on othello i canèt figure out how does Iago dishonor Cassion in Act 2 Scene 3. this is my guess: he gets him drunk and then get him into a fight thus disturbing Othello with Desdemona please help and thank you
asked by NeedHELP 
physics
A 33300 lb (earth weight) rocket in outer space has two constant forces acting upon it, F1 = (166i + 392j) lb and F2 = (50i + 54j) lb. Its initial velocity is (39i + 64j) ft/s. How far is it from where it started after 33 seconds?
asked by sandhu 
Math
Can you figure out this message? ZASMEZASIXP IP JUT One clue the first word starts with an M
asked by Linda 
physics
An electric pump needs to be installed on a deep well to provide water. If the well is 30m deep and 50L of water must be pumped out per minute. How powerful a pump is needed ? (watts)
asked by samantha 
English
"It was a worthwhile trip," she said, "the city had many excellent museums." Should the be capitalized?
asked by Justine 
differential equation!!
How can I solve the differential equation? C = 15ð(2Dh+(3/4)D²) + ë (94.25 Dh+35.34 D^2)/(pi D^2h/4) first dC/dD? second d^2C/dD^2? first dC/dh? second d^2C/dh^2?
asked by Alicia 
social studies
help me write a great thesis statement and a great introduction for a french and indian war research paper? help me please!!!!!!!
asked by majenta 
history
I am thinking of writing a paper on Israel. What countries are threatening Israel?
asked by linda 
Calculus
Express the limit as a definite integral on the given integral, [5pi,3pi]. limit notation: cos(xi)/xi
asked by Anya 
english
My mother told me, I should establish credit at a young age. Am i correct when i say the pronouns are me and I, and the adverbs are establish and young?
asked by Chase 
accounting
Alik Amal is a bar in Panama City, Florida. In April 2008, rowdy spring break guests damaged a jukebox that had been purchased in 1995 for $800. The jukebox had a useful life o1 ten years, with an estimated salvage value of $75. Alik AmaI decided to scrap
asked by ana 
algebra
factor. 3x+x^210
asked by mike 
physics
A 3670 lb car going around an unbanked curve at a constant speed of 25 mph begins to slide (ìs=0.55 and ìk=0.45). What is the radius of the curve?
asked by sandhu 
organic chemistry
how do u find the percent yield of 4.0g of acetanilide AND 31.12G OF 4bromoacetanilide. calculate the percent yield of 4bromoacetanilide
asked by georgie 
Algebra
It says "Find the slope of each line" 10=5x+2y 4x3y=12
asked by Lindsay 
physics
A 33300 lb (earth weight) rocket in outer space has two constant forces acting upon it, F1 = (166i + 392j) lb and F2 = (50i + 54j) lb. Its initial velocity is (39i + 64j) ft/s. How far is it from where it started after 33 seconds?
asked by sandhu 
chemistry
13.98mL of 2.902M HCl are reacted with 15mL of 3.198M NaOH. Use the molar heat of neutralization to determine the kJ of heat produced.
asked by serena 
Physics
The speed of longitudinal waves, called P waves, is 7274.0 m/s. Transverse waves, called S waves, travel at a slower 3803.0 m/s. A seismograph records the two waves from a distant earthquake. If the S wave arrives 4.47 min after the P wave, how far away
asked by Pete 
ethics
Who is hurt by insider trading?
asked by Anonymous 
algebra
what is the answer to x5w=
asked by serena 
algebra
what is the answer to x5w=
asked by nikkie 
english
My mother told me, I should establish credit at a young age. Is there a adjective in this sentence?
asked by Chase 
math
if a playground is a rectangle that is enclosed by a exactly 140 ft of fence and the width is ten ft shorter then its length what is the width and length of the rectangle
asked by emily gibbs 
algebra
Use synthetic division to divide the polynomial 2x3 – 45x + 28 by x + 5, and write the quotient polynomial and the remainder. [Be careful – notice that there is no x2 term.]. Show work.
asked by Wizard 
calculus
differntiate the function: w=1/6+2y/5y^2/3
asked by gen 
Help
What is a straight line method?
asked by Mare 
AP Calculus BC
Hi! Thank you very much for your help I'm not sure what the answer to this is; how do I solve? Find antiderivative of (1/(x^2))[sec(1/x)][tan(1/x)]dx I did integration by parts and got to (1/(x^2))[sec(1/x)] + 2*[antiderivative of (1/(x^3))(sec(1/x))dx]
asked by APpreciative student 
Marketing
Several years ago, a brewing company led a charge of microbreweries in an attack on the established brewers' domestic beers. Explain and describe the following: What is micromarketing? How might it have been used by microbreweries? What communications
asked by Need Help 
spanish
i need 10 interrogative sentences in spanish talking about being on vacation.
asked by l 
english
Why is it important to not be so selfcentered and to not just love yourself
asked by Kara 
ap physics c
Hi What is the center of mass of the following object measured from the center of the sphere?: a sphere of radius R and mass m2 is connected to a solid tube of mass m1 and length L Thank you!
asked by student2010 
communication
What would be the reaction of a reader if the topic sentence in an essay did not coincide with the supporting points
asked by mary 
finances
· Why is time such an important factor in financial matters? How does the frequency of interest compounding, regardless of the rate of interest or period of accumulation, affect the future value of any given amount? Explain your answer. How might you use
asked by Anonymous 
math
33/65 into mixed number
asked by Anonymous 
Physics
the force required to accelerate a mass of 10.0kg at 4.00m/s^2 is
asked by John 
5th grade
10 examples of simple and complete subject
asked by ozzy 
URGENT Chemisrtry
In an atom whose core contains 16 neutrons possess a total electrical charge q=+2,56x10in force 18 1. What is the atomic number of the atom? 2.What is the number of nucleons(mass)? 3.How much electrons has in electronic mantle?
asked by Ciara 
writing
describe a recent interaction with famoly or friend about personal finaces or credit cards.
asked by stephanie hampton 
Calculus
the integral from 0 to pi/2 of sin^5(x)cos^18(x)
asked by Lauren 
patients records
what is an accreditation agency and name an area of records management that is affected by its guidelines.
asked by donna 
calculus
the integral 49dx/x^2(x^2+36)^(1/2)
asked by Adam 
Balance Sheet
On a balance sheet, the accounts payable and salaries payable would fall under the category of ?
asked by Mare 
calculus
y= [(2x1)(x^2) + x]
asked by gen 
Axia
Utilization of a SWOT Analysis is a common method of comparing Internal and External factors that impact an organization. What is the benefit of this type of analysis for a health care organization?
asked by Christi 
Axia
4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC
asked by Wanda 
college algebra
solve ln(5/3)
asked by gigi 
Chemistry
In an atom whose core contains 16 neutrons possess a total electrical charge 1. What is the atomic number of the atom? 2.What is the number of nucleons(mass)? 3.How much electrons has in electronic mantle?
asked by Ciara 
psychology
Surveys suggest that up to 4% of the U.S. population suffers from generalized anxiety disorder. How are anxiety disorders viewed by various psychological perspectives such as psychodynamic, biological, cognitive, and humanistic? With which perspective do
asked by Katie 
college
From the perspective of a healthcare administrator of any type of healthcare organization, who oversees human resource benefits, analyze how you would evaluate the quality of care being delivered by your health benefits contractor(s) to your employees.
asked by Delo 
Science
How Do Various Types of Fertilizers Change the Growth Characteristics of Plants?
asked by Nathan 
english
which of the following genres is defined by form rather than theme: tragedy, sonnet, comedy, satire, or drama.
asked by liz 
3rd grade math
coach took 16 players to a game. he said they could have a drink, hot dog or both. 12 had a drink, 9 had a hot dog. how many had both?
asked by school 
history
Writing a paper.... Has Israel gained or lost ground in the last 20 years?
asked by linda 
Substance Abuse
only certain people can become alcoholics? True or False. I think Its False?
asked by Linda 
pre calculus
2n^1/3(n^2/3+n^1/3)
asked by sam