Questions Asked on
November 11, 2012

Chemistry
Which of the following electron configurations of neutral atoms represent excited states? ( ) [Xe]6s24f1 ( ) 2s2 ( ) 1s22s22p63s23p63d2 ( ) [Ar]4s23d3 ( ) [Kr]5s14d5
asked by Garcia 
math help me pls
1. Find the like terms in the expression y + 1.2y + 1.2z. (1 point)y and 1.2y 1.2y and 1.2z y and 1.2z y, 1.2y, and 1.2z 2. Simplify 2 + 17x – 5x + 9. (1 point)19x + 4 12x + 11 22x + 11 15x – 4 3. Simplify 3(5y + 6) – 4. (1 point)11y + 14 11y + 18
asked by pls help me 
PHYSICS!!!
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gasoline (ñ = 7.00 102 kg/m3) through a hose having an outlet radius of 2.72 cm. The difference in
asked by k 
Physics
A motorboat traveling at a speed of 2.1 m/s shuts off its engines at t = 0. How far does it travel before coming to rest if it is noted that after 2.7 s its speed has dropped to half its original value? Assume that the drag force of the water is
asked by Anonymous 
Chemistry
Select the true statements regarding the resonance structures of formate. HCO2 Check all that apply: Each oxygen atom has a double bond 50% of the time. The actual structure of formate is an average of the two resonance forms. Each carbonoyxgen bond is
asked by Anonymous 
math
A Japanese beetle has a length between 0.3 and 0.5 inch. Find two lengths that are within the given span. Write them as fractions in simplest form.
asked by anonymous 
Chemistry
For each electron in a groundstate Be atom, select the set of quantum numbers that represents it. Check all that apply. ( ) n=2, l=0, ml=0, ms=+1/2 ( ) n=1, l=0, ml=0, ms=+1/2 ( ) n=2, l=1, ml=0, ms=1/2 ( ) n=2, l=1, ml=1, ms=+1/2 ( ) n=2, l=0, ml=0,
asked by Garcia 
chemistry
A) Determine the concentration in molarity (M) of a crystal violet solution based on a measured absorbance of 0.545 at 590 nm at a path length of 1.0 cm . B) Based on your determined concentration (in molarity,M), how many milligrams of crystal violet were
asked by confused chem. student 
Chemistry
How many milliliters of a 0.20 M of glucose (C6H12O6) solution are needed to provide a total of 25.0 g. of glucose? Molarity(M)= Moles of Solute/Liters of Solution
asked by Melia 
Physics HW, Help Please
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 19.2 inches off the ground. He hits the ground 1.61 inches away from where he
asked by Michael 
PHYSICS!!!
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.22 105 Pa and the pipe
asked by k 
College Math
Fiona invested $1100 at 8% compound comtinously. At the same time, Maria ivested $1200 at 8% compounded daily. How long will it take for their investments to be equal in value?
asked by Anonymous 
physics
The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the
asked by Donald 
PHYSICS!!!
A pipe carrying 20°C water has a diameter of 3.6 cm. Estimate the maximum flow speed if the flow must be streamline. Answer in cm/s
asked by k 
statistics
The Intelligence Quotient (IQ) test scores for adults are normally distributed with a mean of 100 and a standard deviation of 15. What is the probability we could select a sample of 50 adults and find the mean of this sample is between 95 and 105?
asked by Trev 
MAT 116
The perimeter of a rectangle is 28 ft. The length is 10 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.
asked by Samantha 
physics
A key falls from a bridge that is 45 m above the water. The key falls straight down and lands in a model boat traveling at a constant velocity of 3.5 m/s. Calculate the distance the boat was from the point of impact when the key was released. Answer d=
asked by H 
physcis
A beam resting on two pivots has a length of L = 9.00 m and mass M =81.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance 4.00 m from the left end exerts a normal force n2. A woman of mass m=
asked by Anonymous 
physics (speed of plane by radar)
The radar stations A and B, separated by the distance a = 500 m, track the plane C by recording the angles α and β at 1second intervals, If three successive readings are shown in the table,calculate the speed v of the plane and the climb angle y at t =
asked by micheal 
science
How much heat must a gram of water at 15°C lose to turn into ice at 0°C?
asked by mofrey 
PHYSICS!!!
Water flowing through a garden hose of diameter 2.72 cm fills a 25.0L bucket in 1.10 min. (a) What is the speed of the water leaving the end of the hose? m/s (b) A nozzle is now attached to the end of the hose. If the nozzle diameter is onethird the
asked by k 
physcis
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 85.0 kg, length = 5.80 m, the ladder’s mass to be 37.0 kg, è = 51.0°, and the coefficient of friction
asked by Anonymous 
Chemistry
a 25.0 mL sample of .050 M solution of aqueous trimethylamine is titrated with a .063 M solution of HCl. calculate pH the solution after 10.0 mL, 20.0 mL, 30.0 mL of acid have been added. pKb of (CH3)_3_N= 4.19 at 25 degrees C
asked by Elaine 
Physics
A rotating cylinder 7.95 kilometers in radius is designed to be used as a space colony. With what period must it rotate so the residents on it feel as heavy as they would on Earth?
asked by Tristan 
Chemistry
What is the pH of a solution prepared by mixing 10 mL of 0.10 M NH3 and 5.0 mL of 0.24 M NH4+. Assume Ka(NH4+) = 5.56 x 10^10
asked by Liz 
PHYSICS!!!
A liquid (ñ = 1.65 g/cm3) flows through a horizontal pipe of varying cross section as in the figure below. In the first section, the crosssectional area is 10.0 cm2, the flow speed is 288 cm/s, and the pressure is 1.20 105 Pa. In the second section, the
asked by k 
physics
A 9.0 kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.0 m/s, determine (a) the translational kinetic energy of its center of gravity.
asked by Anonymous 
chemistry
A researcher studying the nutritional value of a new candy places a 3.10gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.34 °C. If the heat capacity of the calorimeter is 33.50
asked by Shireen Shaikh 
PHYSICS!!!
A square metal sheet 3.1 cm on a side and of negligible thickness is attached to a balance and inserted into a container of fluid. The contact angle is found to be zero, as shown in Figure (a), and the balance to which the metal sheet is attached reads
asked by k 
physics
The Earth’s radius is about 6380 km. The space shuttle is orbiting about 275.0 km above Earth’s surface. If the average speed of the space shuttle is 23500 km/h, find the time required for it to circle Earth.
asked by Jacky 
chemistry
Calculate the mass in grams of 2.50 mol iron(II) hydroxide. A. 29.5 g Fe(OH)2 B. 184.5 g Fe(OH)2 C. 225 g Fe(OH)2 D. 3.38 x 102 g Fe(OH)2 C
asked by Cathy 
Physics
A 500 g block on a frictionless surface is attached to a rather limp spring of constant k = 8.7 N/m. A second block rests on the first, and the whole system executes simple harmonic motion with a period of 3.1 s. When the amplitude of the motion is
asked by Mike 
physics
An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit. During the space walk, the unit ejects
asked by Anonymous 
physics
A ball is dropped from the top of a building. The balls fall 3 times farther during its last second of freefall than it did during its third second of freefall. The ball fell 4.9 meters during its first second, how tall is the building and how much time is
asked by H 
Chemistry
Iron (III) hydroxide is soluble in acid: Fe(OH)3(s)3H^+(aq)>Fe^3^+(aq)+3H2O(l) a. How many milliliters of 1.00 M HCl are needed to dissolve 1.00 g of iron (III) hydroxide? b. If you added enough HCl to dissolve the 1.00 g of iron (III) hydroxide and then
asked by Kelly 
physics!!!
The viscous force on an oil drop is measured to be 6.0 1013 N when the drop is falling through air with a speed of 9.0 104 m/s. If the radius of the drop is 2.5 106 m, what is the viscosity of air? Answer in N x s/m^2
asked by k 
physics
A simple pendulum consists of a small object of mass 3.20 kg hanging at the end of a 3.70 m long light string that is connected to a pivot point. (a) Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string
asked by Anonymous 
physics
A warwolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass 3.00 m long and joining
asked by Anonymous 
chemistry
CaCO3(s) + 2 HCl(aq) > CaCl3(aq) + H2O(l) + CO2 It takes 19.26 mL of 0.6721 M HCl to completely react with the CaCO3. What is the mass of CaCO3 in the tablet? didnt mean to cal you
asked by Sheree' 
statistics
The alternative hypothesis for an independentmeasures t test states ______. a. There is no mean difference between the two populations being compared. b. There is no mean difference between the two samples being compared. c. There is a nonzero mean
asked by Robbie 
PHYSICS!!!
A straight horizontal pipe with a diameter of 1.0 cm and a length of 46 m carries oil with a coefficient of viscosity of 0.11 N · s/m2. At the output of the pipe, the flow rate is 8.4 105 m3/s and the pressure is 1.0 atmosphere. Find the gauge pressure
asked by k 
physics
A person bending forward to lift a load with his back, as shown in the figure, rather than with his knees can be injured by large forces exerted on the muscles and vertebrae. The spine pivots mainly at the fifth lumbar vertebra, with the principal
asked by Anonymous 
Chem
What is the approximate ΔH in kJ for the following reaction as written: 2NH3(g) > 3H2(g) + N2(g) Careful, what kind of bond does the nitrogen molecule make? I think it's 86, but I just want to make sure. Thanks in advance!
asked by Anonymous 
chemistry
The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.29 pounds of butane (fuel value is 10.85 kcal/g) is used to heat 122.5 kg of water at an initial
asked by Shireen Shaikh 
statistics
For which of the following situations would a repeatedmeasures research design be appropriate? a. comparing mathematical skills for girls versus boys at age 10 b. comparing pain tolerance with and without acupuncture needles c. comparing selfesteem for
asked by Robbie 
physics
A cook holds a 2.66kg carton of milk at arm's length (see the figure below). What force B must be exerted by the biceps muscle? (Ignore the weight of the forearm. State the magnitude of the force B.)
asked by sarah 
programming MIPS ask
Write a MIPS assembly language program that will cover the following steps: Prompt the user to enter a first integer named i1 Prompt the user to enter a second integer named i2 Compute i1+i2200 Print the value of the result Repeat The program should
asked by jack 
physics
What is the angular momentum of a figure skater spinning at 4.4 with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.6 , a radius of 15 , and a mass of 53 ?
asked by jake 
PHYSICS!!!
Glycerine in water diffuses along a horizontal column that has a crosssectional area of 2.0 cm2. The concentration gradient is 3.1 102 kg/m4, and the diffusion rate is found to be 5.4 1015 kg/s. Determine the diffusion coefficient. Answer in m2/s
asked by k 
physics
A 5.00 kg mass is connected by a light cord to a 3.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.300 k∙m2 and a radius of 0.500 m. Assuming that the cord does not slip
asked by Anonymous 
PHYSICS!!!
Sucrose is allowed to diffuse along a 8.0cm length of tubing filled with water. The tube is 6.1 cm2 in crosssectional area. The diffusion coefficient is equal to 5.0 1010 m2/s, and 8.0 1014 kg is transported along the tube in 18 s. What is the
asked by k 
Physics
A 0.069kg arrow is fired horizontally. The bowstring exerts an average force of 65 N on the arrow over a distance of 0.95 m. With what speed does the arrow leave the bow?
asked by Donald 
chemistry
how many liters of O2 gas measured at 784mmHg and 25'C are required to completely react with 2.3 mole of Al?
asked by Anonymous 
Stattistics
In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One student’s Math score was 70 and the same
asked by lisa 
Chemistry
Find the Molality and Molarity of a solution where 1.0g of NaCl was dissolved in 100mL of rubbing alcohol (the density of the alcohol is 0.78 g/mL). Not sure what steps to use to find Molarity and Molality....
asked by Anonymous 
Physics
A person pushes a 16.0kg shopping cart at a constant velocity for a distance of 26.0 m. She pushes in a direction 22.0° below the horizontal. A 38.0N frictional force opposes the motion of the cart.
asked by D 
physics
A 57.5kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does 265 J of work on him. In both cases, the forces doing the work are nonconservative. The
asked by Anonymous 
Precalculus
The question(s) are as follows: Given: f(x) = 3cos(3x+π)  4 Find: a) the inverse of F(x) b) the domain and range of F(x) c) the domain and range of F 1(x) I got cos1[(x4)/9]  π = y for the inverse, although I'm not sure I did the problem right (I
asked by Mary 
physics
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 85.0 kg, length = 5.80 m, the ladder’s mass to be 37.0 kg, è = 51.0°, and the coefficient of friction
asked by Anonymous 
physics
A solid, horizontal cylinder of mass 12.0 kg and radius 2.30 m rotates with an angular speed of 6.70 rad/s about a fixed vertical axis through its center. A 1.60 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center
asked by Anonymous 
Physics
A 7410kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the
asked by Donald 
physics
A 75.0 kg stunt man jumps from a balcony and falls 28.0 m before colliding with a pile of mattresses. If the mattresses are compressed 0.800 m before he is brought to rest, what is the average force exerted by the mattresses on the stuntman?
asked by Alexis 
gen chem II
At what temperature does the average speed of an oxygen molecule equal that of an airplane moving at 560 mph?
asked by stephanie 
math
joe walked 4 miles north, 9 miles east then 8 miles north and 7 miles east if Al decides to walk straight back to where he started how far must he walk?
asked by blake 
physics
Consider the following mass distribution, where x and y coordinates are given in meters: 5.0 kg at (0.0, 0.0) m, 4.0 kg at (0.0, 7.0) m, and 7.0 kg at (5.0, 0.0) m. Where should a fourth object of 8.0 kg be placed so that the center of gravity of the
asked by Anonymous 
Chemistry
What energy in kJ is required to break 4.24 mol of NH3 into atoms? As noted below, this information can be used to calculate ΔH for gasphase reactions. I got 1376.18, which is wrong. All help is appreciated!
asked by Anonymous 
physics
A person bending forward to lift a load with his back, as shown in the figure, rather than with his knees can be injured by large forces exerted on the muscles and vertebrae. The spine pivots mainly at the fifth lumbar vertebra, with the principal
asked by Anonymous 
Physics
A cable lifts a 1060kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?
asked by Donald 
Physics
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steampowered catapult. The thrust of its engines is 2.10 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.30 107 J
asked by Donald 
CHM111
Mg3N2(s)+6H2O(l) to 3Mg(OH)2(s)+2NH2(g)how many grams of H2O are needed to producce 150g of Mg(OH)2?
asked by Anonymous 
math problem
There is a layer of ice four inches thick covering a small pond when the weather arrives and it begins to smelt. It smelts 1/16 inch the first day, 1/8 inch the second day. 1/4 inch the third day, and keeps doubling the amount melted each succeeding day.
asked by Mark 
Chemistry
Find the Molality and Molarity of a solution where 1.0g of NaCl was dissolved in 100mL of rubbing alcohol (the density of the alcohol is 0.78 g/mL). Not sure what steps to use to find Molarity and Molality....
asked by Anonymous 
chemistry
Which atom in each of the following pairs has a larger radius? a) Na or K b) V or Zn c) V or Ta d) Li or Ba
asked by lynn 
statistic
. For each of the following, assume that the two samples are selected from populations with equal means and calculate how much difference should be expected, on average, between the two sample means. a. Each sample has n _ 5 scores with s2 _ 38 for the
asked by Sharon 
Algebra
A motorcycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was being driven at 45mi/hr and the rider walks at a speed of 6mi/hr. Teh distance from home to work is 25 miles and the total time for the trip was 2 hours. How
asked by kaitlyn 
Chemistry:Freezing Points
The freezing point lowering of a saturated aqueous solution of NaCl is 17 Celsius. Would spreading salt on the icy sidewalks be beneficial when the temperature outside is 8 Fahrenheit? Explain.
asked by Anonymous 
Physics Hw Help Please
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. A tourist is obviously using the elevator to reach their hotel room and after a long ride finally arrives at the correct floor
asked by Michael 
physics
Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?
asked by shan 
CSUSB
calculate the grams of iron produced when 120g of iron (III) oxide are reacted with 84g carbon monoxide Fe203+3CO2Fe+3CO2
asked by Darlene 
physics
A certain car is capable of accelerating at a uniform rate of 0.93 m/s2. What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 86 km/h to one of 98 km/h? Answer in units of m
asked by Anne 
English
1. Will you recommend me a book?  I recommend you this book, the Autobiography of Benjamin franklin. 2. I recommend you that you go shopping with your wife. 3. I recommend this smart phone to you. 4. I recommend you that you shoud go shopping with your
asked by rfvv 
physics
1000 kg car moving at 10 m/s brakes to a stop in 5 s. The average braking force is ? n
asked by Anonymous 
PHYSICS!!!
A hypodermic syringe contains a medicine with the density of water (figure below). The barrel of the syringe has a crosssectional area of 2.89 105 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force of magnitude
asked by k 
Sociology
What does the author think best explains the number of lowerclass offenders in the criminal justice system? a) They have higher offending rates. b) They have higher rates of recidivism. c) There are both disparities in crime rates and discrimination in
asked by Tammy 
physics
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 155 N/m. The bullet becomes embedded in the block. If the bulletblock system
asked by lilly 
Chemistry
CFCs, or chlorofluorocarbons,were once used as refrigerants, but were banned due to their role in the depletion of ozone in our upper atmosphere. The evaporation of CFCs can be used to drive the freezing of liquid water. Given the heat of vaporization for
asked by Anonymous 
chemistry
Give the orbital designations of electrons with the following quantum numbers" (a) n = 3, l = 0, m1=0 (b) n=2, l=1, ml=1 (c) n=4, l=3, ml=2 (d) n=4, l=2, ml=0
asked by lynn 
crim procedure
Which of the following rights is dependent upon whether formal charges have been filed or a criminal prosecution has begun? Answer the Fourth Amendment protection against unreasonable search and seizure the Fifth Amendment privilege against
asked by ron 
chemistry
How many moles are in 24.0 g KCl? A. 3.22 mol B. .32 mol C. 0.322 mol D. 32.2 mol C
asked by Cathy 
math
Mr. smith wants to buy some fencing to completely surround his rectangular garden. He knows that the total perimeter of the garden is 26 meters and the total area is 40 square meters. What is the garden’s length and width?
asked by Anonymous 
Healthcare
You are the manager of a variable hospital department and you just received your monthly budget results that state your salaries were higher and your supplies were lower than budgeted.
asked by mae 
algebra
a new york city taxi charges $3 per ride plus an additional $0.50 per mile what is the function
asked by shakira 
calculus
a function has a local maximum at x=2 and x=6 and a local minimum at x=1. how do u find the concavity of this function and point of inflection?? ***the only given info is the max and min points
asked by Navroz 
physics
A person bending forward to lift a load with his back, as shown in the figure, rather than with his knees can be injured by large forces exerted on the muscles and vertebrae. The spine pivots mainly at the fifth lumbar vertebra, with the principal
asked by Anonymous 
Sociology
Which statement would Kennedy’s New York City “pedestrian stop” analysis most likely echo? a) Descriptions of crime suspects dictate who the police stop. b) The race of crime suspects dictates who the police stop. c) Witnesses to crime tend to be
asked by Tammy 
english
Hello! say i got 54 out of 75 points on a test... what would my grade be (A,B,C,D,or a F). thanks!
asked by kate 
Trigonometry
find cos (u+v) when cos v=(1/3) and sin u=(2/5) I found sin (v) to equal (sqrt8)/3 and cos (u)= (sqrt21)/5
asked by Anonymous 
math
cos 4x=7/18. 4x is on quadrant 4. sin x?
asked by zaki 
math
Let's say you are standing on top of a mountain looking down at the valley below, where you can see cars driving on a road. You stretch out your arm, use your thumb to "sight" a car, and find that the car appears to be as long as your thumb is wide.
asked by Chelsea 
PHI 103
"The Senator wants to cut spending on police. I guess she doesn't care if we all get murdered" may commit which fallacy? (Points : 1) Straw man fallacy False Cause Appeal to popularity No fallacy committed
asked by mandy 
chemistry
Find the mass in grams of 1.01 mol TiO2 A. 0.806 g TiO2 B. 80.67 g TiO2 C. 8.06 g TiO2 D. 806.7 g TiO2 B
asked by Cathy 
Physics
2 blocks of masses m1 and m2 are joined by a light spring on a horizontal table. Obtain the relation of their accelerations a1 and a2 after they separate a bit and get released. I tried to use the equations V(x)= .5k*x^2 (potential energy) and V = ∫Fdx
asked by Krystina 
programming MIPS ask 3
Write a MIPS assembly language program for the following for loop: Pseudocode: int x; # for(x=10; x>0; x){ # printf("x=%d", 4x); #} In the program use the slt or slti instruction and sll
asked by jack 
Physics
A 11.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 160 N/m. The bullet becomes embedded in the block. If the bulletblock system
asked by Kelly 
Physics RC
A 6.44 E+06 ohm resistor and a 1.00 microfarad capacitor are connected in a single loop circuit with a seat of emf of E = 2.00 V. At 6.00 s. after the connection is made, what is the rate at which energy (in joules/second) is being delivered by the seat of
asked by andrew 
economics
Given the economic situation today, outline the discretionary fiscal policy you would promote if you were president. In terms of the ADAS model, explain how your policies would affect the economy.
asked by edna garcia 
economics
What is a supply shock? Give an example of a current supply shock. Which way does this shock move the AS curve? What is the resulting impact on potential GDP and the price level?
asked by edna garcia 
science
What is meant by depassivation of reinforcement? State the two main chemical attacks that lead to depassivation
asked by John 
English
e.g. I have a soda to recommend. ( What is 'soda'? Are both Coke and Cola a soda? Is 'soda' different from 'soda water' or 'soda pup'?)
asked by rfvv 
Physics
A topgun pilot, practicing radar avoidance maneuvers, is flying horizontally at 1300 km/hr, just 35 m above level ground. Suddenly, the plane encounters terrain that slopes gently upwards at 5, an amount difficult to detect visually. If the pilot
asked by suzy 
Math/Algebra
I really need help! I have a paper due tomorrow and I can't find out this answer. Can you help me? The question says this: 2=n+5. Under it it says: (2)____=n+5____. I know that n equals 7 but I can't find out the blanks. Please help!
asked by Lizzy 
math
Hannah's grade on her last math test was 4 points more than Mark's grade. Write an expression for Hannah's grade, using m as a variable. Evaluate the expression if m=92.
asked by josh 
math
A diver jumps into a 10 meter deep pool from a 5 meter platform with an initial upward velocity of 3.2 meters per second. What will the divers maximum height be? After how many second will the diver hit the water? If the water were drained from the pool,
asked by ryan 
Writing
Help me please! My daughter is failing in the 4th grade with her writing. How can I help her improve her writing skills? She doesn't grasp what she reads fully because her writing doesn't match with what she reads. asahe leaves out crucial information and
asked by Yolan 
physics
A large grinding wheel in the shape of a solid cylinder of radius 0.370m is free to rotate on a frictionless, vertical axle. A constant tangential force of 470 N applied to its edge causes the wheel to have an angular acceleration of 0.800 rad/s2. (a) What
asked by Anonymous 
Cultral Diversity
1.Reserch about the impact of cultral valueson peer social interaction in an early education classroom may lead one to conclude that this enviroment may create biases if the primary social orientation favors:a teacher centered learning b.individual
asked by anna 
physics
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 85.0 kg, length = 5.80 m, the ladder’s mass to be 37.0 kg, è = 51.0°, and the coefficient of friction
asked by Anonymous 
chemistry
You are doing an experiment to determine the Ksp of a salt. If, while filtering, some of the solid passed through the filter and was not taken out before titrating, how would the calculated Ksp and solubility be affected? Thanks.
asked by Ashley 
Physics
A disk rotates on the horizontal. A blcok is hanging from the tisc, which forms an angle with the vertical of 45 degrees while the disk turns. The radius of the disc is .1mm and the length of the string is .06 m. Determine the velocity of rotation for the
asked by Krystina 
grammar
Which of the following words has three syllables
asked by Anonymous 
Physics
A person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 15.0° above the snow. The tension in the rope is 63.0 N.
asked by Anonymous 
computing/maths
Derive the central difference approximation for f′′(x) accurate to O(h4) by applying Richardson extrapolation to the central difference approximation of O(h2). (Note that f''(x)= 2nd derivative of x)
asked by royston 
mechanics
A particle of mass 10 kg is acted on by a resultant force, F newtons. If the position vector of the particle is given by r = 6ti + (4t + 8t2)j, then F is equal toƒª
asked by Karabo 
mechanics
A crate of mass 80 kg stands on level ground. A worker exerts a horizontal force of 120 N on the crate. If the coefficient of friction between the crate and the ground is 0.25, and F N is the magnitude of the frictional
asked by Karabo 
Physics!
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during
asked by jake 
litracy
Which of the following is a primary source
asked by fidelite 
physics
Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as
asked by Anonymous 
English Hamlet
I trying to do thematic statement on certainty or uncertainty which be in play of hamlet, but i having troubles with last sentence. Being sure and timely in one’s own decisions will allow them to accomplish tasks and clear any obstacles within time.
asked by Mohammad 
physics
A ball is thrown horizontally off the top of a 65 m tall building at a velocity of 7.8 m/s. How far did the ball land from the base of the building? Round your answer to 2 decimal places.
asked by Sara 
statistics
An independentmeasures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12. What is the value for the t statistic? a. 1 b. 2 c. 4/√2 d. 4/√8
asked by Robbie 
Physics
Brett decided that he was going to go bungee jumping at the WEM mall water park. If Brett weighs 95kg and he is 30 m above the water, how far will he fall IF the elastic force of the bungee cord is 1000N? Will he hit the water?
asked by Jocelyn 
physics
A robot probe drops a camera off the rim of a 455 m high cliff on Mars, where the freefall acceleration is 3.7 m/s2.Find the velocity with which it hits the ground. Answer in units of m/s
asked by Anne 
government
Would a program of reforms to increase voting turnout need to focus on the cost of voting, the benefits, or both? What do current reform proposals prioritize?
asked by Anonymous 
Math
Don't understand the problem can somebody please help me The bottom of the rabbit cage is a rectangle with a perimeter of 118 inches. Let x be the cages width(in inches) and let y be its length (in inches). write an equation for the perimeter the find the
asked by Kim 
college algebra
find the zero's for the following polynomial and give the multiplicity for each zero. For each zero, state whether the graph crosses the xaxis or touches the xaxis and turns around. f(x)=5(x2)(x+4)^3 I am having trouble with this. Can you please show me
asked by ladybug 
physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?
asked by KRISTEL 
govt
Would a program of reforms to increase voting turnout need to focus on the cost of voting, the benefits, or both? What do current reform proposals prioritize?
asked by Anonymous 
PHYSICS!!!
A thin 1.8mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
asked by k 
calculus
If the hands on a clocktower's clock are 2ft and 3ft long, how fast is the distance between the tips of the hands of the clock changing at 9:20? I know that the derivative of the minute hand is pi/30 rad/min and derivative of the hour hand is pi/360
asked by nico 
PHYSICS!!!
A certain fluid has a density of 1045 kg/m3 and is observed to rise to a height of 2.4 cm in a 1.0mmdiameter tube. The contact angle between the wall and the fluid is zero. Calculate the surface tension of the fluid. Answer in N/m
asked by k 
PHYSICS!!!
To lift a wire ring of radius 1.95 cm from the surface of a container of blood plasma, a vertical force of 1.79 102 N greater than the weight of the ring is required. Calculate the surface tension of blood plasma from this information. Answer in N/m
asked by k 
chemistry
Calculate the number of moles in 75.0 g of oxygen gas. A. 2.34 mol O2 B. 4.69 mol O2 C. 750 mol O2 D. 12.5 × 1023 mol O2 B
asked by Cathy 
physics
A 7.00 104kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2700 km. What is the final
asked by Anonymous 
PHI 103
"Thomas Jefferson owned slaves, so slavery must have been a good idea" may commit which fallacy? (Points : 1) Appeal to pity No fallacy committed Appeal to false authority Appeal to ignorance
asked by mandy 
Cal
find the x coordinates of all relative points of f(x)=1/2x^42/3x^36x^2100
asked by Neika 
mechanics
A mass of 8 kg is connected to a mass of 3 kg by a light, inelastic string which passes over a smooth pulley. The tension in the string isƒª
asked by Karabo 
mechanics
A body of mass 10 kg is moving in a straight line. Its velocity decreases from 5 m/s to 3 m/s in a time of 2 s. The change of momentum of the particle, in kg m/s, in the direction of motion isƒª
asked by Karabo 
Weather
What was the outside temperature in Indialantic Fl. On 5302011?
asked by Anonymous 
calculus
a function has a local maximum at x=2 and x=6 and a local minimum at x=1. how do u find the concavity of this function and point of inflection??
asked by Navroz 
C++
Write a MAIN function and a FUNCTION to compute the sum of the below series. (n!)/(2n+1)! (from n=1 to infinity) Within the MAIN function: . Read a variable EPSILON of type DOUBLE (desired accuracy) from the standard input. EPSILON is an extremely small
asked by Emre 
math
Suppose and the domain is Describe the function in the following ways: a. Draw an arrow diagram involving two sets.
asked by kelli 
Project Budget
For a Company Wide Compliance System Project Budget The project for the company offsite 2day training session has been given a preliminary goahead. However a budget needs to be submitted for approval. Write a 2 to 3page memo explaining the financial
asked by Misty 
writing
How can I change this sentence to Indirect speech. Our neighbor told us,"I can't help you move because we"ll be out of town next weekend.
asked by Anonymous 
English
Which word goes in the blank. The patient must lie/lay perfectly still during the Xray. Is it lie since there is no object?
asked by Kelley 
algebra
13=5(1+4m)2m
asked by Hannah 
aig
Please solve. Use order of operations. 320(17+3)5 = My answer is 323, am i right or not? if not please tell me your answer and how you got it.
asked by May 
English
Would rose be the correct choice because there is no object again, The curtain rose/raised on the last act of the class play.
asked by Kelley 
English
One last one... Larry fell asleep two minutes after he had (laid) down. Should it say lain down due to no object?
asked by Kelley 
Physics
A 240 g mass is attached to a spring of constant k = 5.4 N/m and set into oscillation with amplitude A = 26 cm. (a) Determine the frequency of the system in hertz. (b) Determine the period. (c) Determine the maximum velocity of the mass. (d) Determine the
asked by Jill 
Spanish
I just have SO much trouble with remembering new languages! Does anybody have any ideas to help me remember and to have fun studying Spanish? (ie. flashcards...) I really need HELP! Helen
asked by Helen 
English Hamlet
I got to explain this soliloquie in a paragraph: Spoken by Hamlet, Hamlet Act 1 Scene 2: O, that this too too solid flesh would melt Thaw and resolve itself into a dew! Or that the Everlasting had not fix’d His canon ‘gainst selfslaughter! O God! God!
asked by Mohammad 
Adv Comp
I am doing a paper on symbolism in the book, The Accidental tourist by Anne Tyler, specifically about the chair with wings and the dog. I need to find online sources of people that critic the book or talk about these symbols. They have to be credible
asked by Rebekah 
Math
HELP! I have a math question the says this: In track practice, Jesse ran a mile in 7 minutes. His mile time was 2 1/2 minutes faster than Michael's time. Write and solve an equation to calculate Michael's mile time. I can't figure out what to do and it's
asked by Lizzy 
science
Explain the Nitrogen cycle
asked by Leslie 
trig
cos^2 A/ 1+sin A
asked by mary 
intrest rates
If the principal P = $500, the interest I = $100, and the rate r = 10%, find the following. (a) What is the time? years (b) What is the future value?
asked by sasha 
math
If a business borrows $15,000 and repays $20,700 in 4 years, what is the simple interest rate?
asked by sasha 
math
Let f(x)= x^44x^3+10 Where are the relative extrema, if they exist? Show all partsof the analysis necessary
asked by Britney 
Precalculus
How would I go about finding the domain and range of 3cos(3x+π) = 4? Thanks
asked by Mary 
chemistry
Find the number of moles in 85 g KCl. A. 3.3 mol KCl B. 1.1 mol KCl C. 11 mol KCl D. 2.5 mol KCl B
asked by Cathy 
college algebra
solve for X 7=7x^210x+6
asked by Ty 
PHYSICS!!!
A thin 1.8mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
asked by k 
math
A material has a halflife of 12 hours. If initially there are 4 grams of the material, how much is present after 8 hours? I know the answer is 8/3, but how would you solve this using calculus? please help.
asked by alex 
Its math, cmon answer!!!
This is my HW problem; I'm thinking of a number. When I double my number, subtract five, and then add my original number, I get one. What's my number?
asked by Sarah 
math
A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate
asked by Kristi 
the facility
aesthetic is concerned with matter such as
asked by tina 
algebra
steps to (.15x)+(.3x)=
asked by kc 
math
The number N of state and federal inmates in millions during year x where x >2002 can be approximated by the following formula N=0.04x78.46
asked by denise 
ITE10
ALLOWS TO ACCEPT THE LENGTH IN FEET TO CENTEMETER?
asked by JULIETA 
plant biology
I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one
asked by Victoria 
math
how i can see the exact solution of 6y12y=12 and4x12y=8
asked by luis 
MAT 116
A tugboat goes 180 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.
asked by Samantha 
Physics
A particle of mass m1 is tide to a string and describes a circumference on a horizontal plane. The string (of negligible mass)passes through a hole that is in the center of the plane and goes down vertically. At the lower end is tied another particle of
asked by Leslie 
chemistry
How many grams are in 1.50 mol H2SO4? A. 14.7 g B. 1.47 g C. 0.147 g D. 147.2 g D
asked by Cathy 
Math
How can you tell by looking at the coordinates of a point whether the point is on the x axis or the y axis?
asked by Kim 
Math
12/42=4w/14
asked by Mimi 
Economics
What is kenyas factor of production for their land and labor? Which means what percentage do they use their land for what. For te labor it means what labor occurs their, whether it be physical or mental labor. I need details as well as percentages for
asked by Anonymous 
earth
Explain the Nitrogen Cycle
asked by Leslie 
early child education
what does the word docile mean
asked by mike 
Earth Science
Explain the Earth's Cabon Cycle
asked by Leslie 
physics
Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as
asked by Anonymous 
algebra
It takes a passenger train 2 hours less time than it takes a freight train to make the trip from Central City to Clear Creek. The passenger train averages 96mi/hr while the freight train averages 64mi/hr. How far is it from Central City to Clear Creek?
asked by Samantha 
chemistry
LiCIO4(s)=LiCI(s)+2O2(g)
asked by jodi 
Physics
A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature (in oC, do not enter units) of the room
asked by jake 
statistics
what is the graph for Yhat = 0.333x +35.3
asked by ejaz 
stastics
A population has mean 53 and standard deviation 12. Calculate the mean of x bar for a random sample of size 10.
asked by Anonymous 
physics
A rifle allowed a bullet fired with an initial horizontal velocity to travel 76.0 m while only falling a distance of 0.40 m. What was the initial xvelocity of the bullet? Round your answer to 2 decimal places.
asked by Sara 
physics
A ball is thrown horizontally off the top of a 65 m tall building at a velocity of 7.8 m/s. How far did the ball land from the base of the building? Round your answer to 2 decimal places.
asked by Sara 
maths
find the whole number solutions to each of these inequalities. q1. 3
asked by Mary 
science
how much skin covers 1 of your alveoli?
asked by Josh 
social studies
The Demographic Transition Model
asked by mary 
English
1. I suggest you try it. 2. I demand you try it. (Are both all grammatical?) 3. How many floors is the second floor from ground? (Is it grammatical? What will be the answer to this question?)
asked by rfvv 
math
What are the missing numbers in this sequence? 1.25, 3.5, 8, 17, 35, 71, ___, ___, 575,...
asked by Anonymous 
English
Where can I find a copy?  You can find it in Aisle 1. (In this short dialogue, what does 'a copy' refer to in detail?)
asked by rfvv 
aig math
David has 120 stamps. He gave 36 stamps to Maria and some to Alice. After that he had 5/8 of the stamps left. How many stamps did he give to Alice? My answer is 9, am i right if not please tell me why and how you got your answer.
asked by May 
math
Let f(x)= x^44x^3+10 Where are the relative extrema, if they exist? Show all partsof the analysis necessary.
asked by Britney 
Physics
Sally travels by car from one city to another. She drives for 36.5 min at 90.7 km/h, 13.3 min at 120 km/h, and 57.4 min at 45.6 km/h, and she spends 16.3 min eating lunch and buying gas. Find the total distance traveled. Answer in units of km
asked by Jacky 
Philosophy (arguments)
further develop the following argument: communities in which people spend a lot of time socializing with their friends and neighbors are stronger than other communities. when people have televisions they spend less time socializing with their friends and
asked by Catherine 
math
how many btu"s does it taketo raise onepound of water at 32 f to the boiling point at 14.7psia and then to staem.?
asked by jay 
math
f(x)=x^44x^3+10 Where are the relative extrema, if they exist?
asked by Britney 
Math
What are the missing numbers in this sequence? 1.25, 3.5, 8, 17, 35, 71, ___, ___, 575,...
asked by Anonymous 
trig
tan^2x/1 + tan^2x = sin ^2 x
asked by mary 
trig
(1 + sinx)(secx  tanx) = cos x
asked by mary 
engineering
how many btu's does it take to raise one pound of water at 32 degrees f to the boiling point at 14.7 psia and then to steam?
asked by jay 
math
Can't remember the way to solve for the variable. 5x + 6 = 7x. Answer is 3, but how to do other problems?
asked by Hannah 
medical Technologies
Which classification system uses resident assessment data to assign residents to one of fourtyfour groups, with each assessment applying to specific days within a resident's stay?
asked by Patricia 
Physics
A ball is thrown vertically upward with a speed of 26.1 m/s from a height of 2.1 m.How long does it take to reach its highest point? The acceleration of gravity is 9.81 m/s2. Answer in units of s
asked by Jacky 
linear algebra
in order to grow a certain crop, it is recommended that each square foot of ground be treated with 10 units of phosphorous, 9 units of potassium, and 19 units of nitrogen, suppose that there are three brands of fertilizer on the market  say brand X, brand
asked by deel 
chemistry
how many molecules are in 0.89 moles of ammonia
asked by Rhonda 
chemistry
how many molecules are in 0.89 moles of ammonia
asked by Rhonda 
math
Population of dogs mean rate 26 pounds and a deviation of 3.6 pounds, Population of cats mean rate 10.5 and a deviation of 1.9 if a dog weights 24 pounds and a cat weights 19 pounds. which weighs more for its population?
asked by Syd 
math
how to use hundreds chart for % of the numbers are multiples of 2 and 5?
asked by wan 
Cultual Diversity
1.A mother's eventual submission to her young child's repquests for the toy matchbox car in the hobby shop is representative of the ______ parenting style. a. laissez faire b.authoritarian c.Victorian d. democratic 2.A Native American child spent 30
asked by anna 
Physics Resistance
A 65 V. battery is connected across a 65400 ohm and a 37700 ohm resistor connected in series. What is the per cent error in the voltmeter reading when placed across the first resistor, if the voltmeter resistance is 143000 ohms? Not sure where to go with
asked by andrew 
Cultual Diversity
1.The instructional strategy that works best to give a child from a culturally different background a sence of security and mastery is: a. recounts b.repetion c.using an intermediary d.eventcasts 2.Young children are more likely to demonstrate early
asked by Charm 
physics
Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as
asked by Anonymous 
algebra
steps to (.15x)+(3x)=
asked by Anonymous 
Algebra
On February 18, from 9 a.m. until 2 p.m., the temperature rose from 14(degrees)F to 38(degrees)F. What was the total increase in temperature during this time period?
asked by Vanessa 
Algebra
On February 18, from 9 a.m. until 2 p.m., the temperature rose from 14(degrees)F to 38(degrees)F. What was the total increase in temperature during this time period?
asked by Vanessa 
Social Studies
Veterans day When did this first come about And who did do this What does this day mean to vets And what are some events that day
asked by Chris 
Physics
The angular position of a particle that moves around the circumference of a circle with a radius of 5m has the equation: theta = a*t^2 Where a is constant. theta is in radians t is in seconds Determine the total acceleration and its intrinsic components
asked by Leslie 
operating system
Case 22: Comparing WordProcessing Applications You see an opportunity to possibly save your company money by adopting the OpenOffice suite for the new PCs in the Engineering Department. Your boss is interested in your suggestion, but wants to see a list
asked by geniaj 
Chemistry
A carbon atom is bombarded by high energy photons with a wavelength of 40 nm. Find how many electrons are ejected and the velocity of the first electron.
asked by Phillip 
Human Anatomy
Cystic fibrosis has the most serious effects on the: a. Pancreas c. Small intestine b. Liver d. Large Intes
asked by rawr... im a dinosaur.... rawr