Questions Asked on
September 20, 2010

Business
Thomas Kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation. Thomas’s fastest moving inventory item has a demand of 6000 units per year. The cost of each unit is $100.00, and the
asked by Jackson 
physics
The two angled ropes used to support the crate in the figure below an withstand a maximum tension of 1300 N before they break. The left angle is 30dregres, and the right angle is 45degrees. What is the largest mass the ropes can support? m=?
asked by andrea 
Chemistry
The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol • K. The conversion of 50.0 g of ice at 0.00°C to liquid water at 22.0°C requires how much kJ of heat? Can someone explain how to do this, I tried but keep
asked by Anonymous 
Grade 9 science: ecology
What chemical process(es) do producers and consumers share? What chemical process(es) do they not share?
asked by Rebecca. 
chemistry
A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) molecules What is its mass in mg?
asked by Mely 
Chemistry
A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?
asked by Johannie 
10th grade
Evaluate u + xy, for u = 18, x = 10, and y = 8. a. 188 b. 224 c. 98 d. 36
asked by Denis 
math
Suppose you copy a drawing of a polygon with the given size factor. How will the side lengths, angle mesures , and perimeter of the image compare to those of the original? a. 200% b.150% c.50% d.75%
asked by sabrina 
Chemistry
A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?
asked by Johannie 
Science
When a net torque is applied to a rigid object it always produces a 1. constant acceleration 2. rotational equilibrium 3. constant angular velocity 4. constant angular momentum 5. change in angular velocity
asked by Franco Krause 
college physics
A CD has to rotate under the readoutlaser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? Can someone please help me solve this problem
asked by Amber 
icp
Charge q is 1 unit of distance away from the source charge S. Charge p is six times further away. The force exerted between S and q is _____ the force exerted between S and p.
asked by j 
Chemistry
A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?
asked by Johannie 
Physics
A soft drink can contains about 0.20 kg of liquid at 5 oC. Drinking this liquid can actually consume some of the fat in the body, since energy is needed to warm the water to body temperature (37 oC). How many kcal should the drink have so that it is in
asked by Eric 
physics
An oldfashioned singleplay vinyl record rotates on a turntable at 46.0 rpm. What are (a) the angular velocity in rad/s and (b) the period of the motion?
asked by madiha 
Physics
A horizontal force of 100 N pushes a 12kg block up a frictionless incline that makes an angle 25degrees with the horizontal. What is the normal force that the incline exerts on the block and what is the acceleration of the block? I found part (a) which is
asked by Anonymous 
energy conversion
A 5hp 230volt shunt motor takes 18 amp when operating at full load. The Shuntfield resistance is 115ohms and the armature resistance is 0.25 ohm. calculate the value of the starter resistor if the armature current is limited to 1.5 times the rated value
asked by baskuuugin 
Chemistry
When ammonium chloride is dissolved in water, the solution becomes colder. What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration? Why does the solution form? What drives the process?
asked by Samantha 
Physics
Without glasses, your uncle Albert can see things clearly only if they are between 25.1 cm and 190 cm from his eyes. What power eyeglass lens will correct your uncle's myopia? Assume the lenses will sit 1.70 cm from his eyes. Give answer in diopters. Do
asked by Rudi 
Physics
Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1.3 m/s parallel to the ground. Upon contact with the bat, the ball is 1 m above the ground. Payer B wishes to duplicate this bunt, in so far as he also
asked by Jerry 
chemistry
what is the mass of 1.22x10^23 molcules of carbon dioxide(co2) and silicon dioxide(Sio2)?
asked by Katie 
college
A baseball pitcher throws a baseball with a speed of 38 . In throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 , from behind the body to the point where it is released Estimate the average acceleration of the ball
asked by Anonymous 
chemistry
What mass of protons would be required to just neutralize the charge of 2.7 g of electrons?
asked by blahh 
chemistry
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. nitroglycerin (used medically as a vasodilator to treat heart conditions): C 15.87% H 2.22% N 18.50% O 63.41%. Express your answer
asked by Mely 
CHEM
H2Te CH3CHO CH3CN H2Se polar or nonpolar? Also, anyone know any sites that show pics of the shape of molecules?
asked by RICHY 
algebra
1. Solve 3x – 19 = 2 Ax = 17 Bx = 17/3 Cx = 7 Dx = 51 Ex = 20 Fx = 18 2. Solve 4x + 12x = 62 + 4(11) Ax = 7 Bx = 5 Cx = 35 Dx = 64 Ex = 11 Fx = 7/2 3. Solve 8x – 7 = x + 10 Ano solution Bx = 1/3 Cx = 1/10 Dx = 3/7 Ex = 17/7 Fx = 17/9 4. Solve 4(5x
asked by whitney 
English: Quotes
What if there's a quote inside a quote would I use this " ...'...'" and also what if I wanted to add something in my own words in between the quote would I end the quote then write my thought and then start a new quote OR would I use [...] in between the
asked by Amy~ 
6th grade history
What advantages in warfare did the Hyksos use to defeat the Egyptians? From my readings this is my answer The advances in warfare were that they came in horsedrawn chariots and fought with bronze and iron weapons. Is this correct?
asked by Reed 
computers
I require an algorithm that will receive two integer items from a terminal operator, and display to the screen their sum, difference, product and quotient How to do that?
asked by sunita 
Calc
The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $380 to drive 480 mi. and in June it cost her $460 to drive 800 mi. a) Express the montly cost C as a function of the distance driven d, assuming
asked by Chelsea 
Calc
Find the functions a) f o g, b) g o f, c) f o f, d) g o g, and their domains. f(x)= square root of x, g(x)= cube root of 1x These are my answers, but I am not sure about them and I only figured out one domain... that is the part that really confuses me.
asked by Chelsea 
chemistry
Calculate the mass, in kg, of each sample.9.62×1026 cadmium atoms. 5.72×1027 nickel atoms. 9.14×1027 manganese atoms. 9.02×1029 lithium atoms.
asked by isoka 
Physics
What will be the equilibrium temperature when a 245 g block of copper at 285 oC is placed in a 145 g aluminum calorimeter cup containing 825 g of water at 12.0 oC?
asked by Eric 
chem
what substance is oxidized in following reaction 4 HCl+MnO2 and Cl2+2H2O+MnCl2
asked by daisy 
Marketing
· Write a 1,050 to 1,400word paper in which you identify the environmental factors that affect global and domestic marketing decisions. Address the following as they relate to the organization’s marketing decisions o Analyze the influence of global
asked by Chef 
Chemistry
Why is the expansion of air into a region of low pressure an endothermic proccess?
asked by Lew 
physics
A cannon sends a projectile towards a target a distance 1250 m away. The initial velocity makes an angle 40◦ with the horizontal. The target is hit. The acceleration of gravity is 9.8 m/s2 . What is the magnitude of the initial veloc ity? Answer in
asked by Wendia 
Chemistry
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to oneeighth of its original pressure, and its absolute temperature is decreased to oneseventh of the original. What is the final volume of the gas?
asked by Rachel 
physics
Two crates, of mass m1 = 80 kg and m2 = 115 kg, are in contact and at rest on a horizontal surface. A 620 N force is exerted on the 80 kg crate. The coefficient of kinetic friction is 0.15.(a) Calculate the acceleration of the system.(b) Calculate the
asked by DJS 
Chemistry
How many grams of iron are there in a sample of Fe3O4 which weighs 8.338 g?
asked by Diggs 
chemistry
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. vanillin (responsible for the taste and smell of vanilla): C 63.15% H 5.30% O 31.55%.
asked by Mely 
physics
A car at the Indianapolis500 accelerates uniformly from the pit area, going from rest to 320 km/h in a semicircular arc with a radius of 190 m. 1.) Determine the tangential acceleration of the car when it is halfway through the turn, assuming constant
asked by rick 
Physics
The drawing shows a large cube (mass = 27 kg) being accelerated across a horizontal frictionless surface by a horizontal force vector P . A small cube (mass = 4.0 kg) is in contact with the front surface of the large cube and will slide downward unless
asked by Sarah 
chemistry
Water (2690 ) is heated until it just begins to boil. If the water absorbs 5.29×105 of heat in the process, what was the initial temperature of the water?express answer in Celsius.
asked by Kyle 
physics
2 identical cars capable of accelerating at 3.00m/s^2 are racing on a straight track with running starts. car A has an initial speed of 2.50m/s and car B has an initial speed of 5.00m/s. what is the seperation of the 2 cars after 10seconds? which car is
asked by Anonymous 
Physics
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm behind this lens is a concave lens with a focal length f2 = 13.9 cm. The object to be photographed is 4.06 m in front of the
asked by Rudi 
Calc
Recent studies indicate that the average surface temp. of the earth has been rising steadily. Some scientists have modeled the temp. by the linear function T= 0.02t + 8.50, where T is temp. in degrees Celsius and t represents years since 1900. What do the
asked by Chelsea 
science
animals need what to get rid of body waste?
asked by trey 
Chemistry repost thank you in advance
I have a bottle of 95% ethanol purchased from the manufacturer. Normally, when it is not stated, does it mean 95% w/w ethanol? I need to prepare 100ml of 40% v/v ethanol solution from 95% ethanol. Please show me the calculation steps. Thanks.
asked by annie 
Chemistry
How many calories are required at 0 degrees Celsius to melt an ice cube with a mass of 25 g? Explain in detail. I don't understand.
asked by Evaldo 
9th grade
Name the set(s) of numbers to which 1.68 belongs. a. rational numbers b. natural numbers, whole numbers, integers, rational numbers c. rational numbers, irrational numbers d. none of the above my answer a)rational numbers
asked by Ross 
college physics
A point (labelled P in the figure) is attached to the rim of a disk of radius 0.2 m, which can turn around an axis through its center. It is rotating counterclockwise with a speed of 2.5 m/s. Can someone please help me solve this equation step by step?
asked by Amber 
phsic
A small steel ball bearing with a mass of 10 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.19 m. Calculate the speed at which the ball leaves the spring.
asked by penny 
physics
A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop. (a) What will be the car's stopping distance for dry pavement (µ = 0.85)?
asked by Tom 
chemistry
An unknown substance has a mass of 17.3 . When the substance absorbs 1.557×102 of heat, the temperature of the substance is raised from 25.0 to 45.0 . What is the most likely identity of the substance?
asked by Kyle 
Physics
Ball is thrown horizontally off a cliff with an initial speed of 20m/s. a) how long does it take the ball to hit the ground 20m below. b)how long would it take to hit the ground if it was dropped from the cliff? c) how long would it take to hit the ground
asked by Koby 
math
Three different pairs of numbers that add together to get 1
asked by Lisa 
Math
Solve this linear programming problem using the simplex method: Maximize P = 21x + 12y + 24z subject to these constraints: 3x + 2y + 3z ≤ 864 15x + 6z ≤ 1296 9x + 8y + 18z ≤ 4608 x ≥ 0, y ≥ 0, z ≥ 0 Maximum value for P = ?. This value of P
asked by John 
chemistry
You mix 2.0 mL of 0.50 M Cu(NO3)2 with 5.0 mL of 0.50 M KI, and collect and dry the CuI precipitate. Calculate the following: a) Moles of Cu(NO3)2 used b) Moles of KI used c) Moles of CuI precipitate expected from Cu(NO3)2 d) Moles of CuI precipitate
asked by Rose 
physics
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. She hears the echo 1.7 s after shouting. Estimate the length of the lake.
asked by storm 
physic
Wheel A of radius ra = 6.1 cm is coupled by belt B to wheel C of radius rc = 33.3 cm. Wheel A increases its angular speed from rest at time t = 0 s at a uniform rate of 7.1 rad/s2. At what time will wheel C reach a rotational speed of 119.3 rev/min,
asked by venuya 
math
Write a real world problem that you can solve by writing an equation . The answer to the problem must be 6
asked by marcus 
chemistry
a. How many atoms of hydrogen are in 25.0 g of ammonia (NH3)? Use the format 6.02E+23 for 6.02 x 10^23 b. How many atoms of nitrogen are in the same amount of ammonia I know to find the number of atoms in a gram of a sample you must multiply by 6.02*10^23.
asked by kellie 
physic
Wheel A of radius ra = 6.1 cm is coupled by belt B to wheel C of radius rc = 33.3 cm. Wheel A increases its angular speed from rest at time t = 0 s at a uniform rate of 7.1 rad/s2. At what time will wheel C reach a rotational speed of 119.3 rev/min,
asked by 12isabelle 
physic
A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr. At what angular speed do the wheels turn? answer is 23.8 but still not sure how to find the time How long do they take to turn once around?
asked by venuya 
geometry
D is between C and E. CE = 6x, CD =4x+8, and DE=27. Find CE.
asked by bella 
chemistry
A 0.4272g sample of a potassium hydroxide – lithium hydroxide mixture requires 26.94mL of 0.3385M for its titration to the equivalence point. What is the mass percent lithium hydroxide in this mixture?
asked by Heather 
science
a nickel is about 2 millimeters thick,or 2/1,000 of a metter. how many nanometers is?
asked by yuku 
physics
Compute the order of magnitude of the mass of (a) a bathtub filled with water, and (b) a bathtub filled with pennies. In your solution list the quantities you estimate and the value you estimate for each.
asked by aaron 
12th grade Math  word problems
#1.) The population of bacteria after t hours is given by P(t) = 500/(1+83.33e^0.162t) a.) What is the initial population? b.) When will the amount of bacteria in the population be 12? #2.) Which investment yields the greater amount after 4 years? a.)
asked by Jamie 
stats
Using the 689599.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 689599.7 rule to find the following quantities: Suggest you make a drawing and label first… a. Percentage of
asked by Jenn 
chemistry
what is the mass of 1 mole of carbon dioxide (CO2), and silicon dioxide (SIO2)?
asked by Katie 
math
You select 10 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)?
asked by Hanna 
5th grade
Can you please correct this sentense: kelsey said i want to go to aunt joys for thanksgiving
asked by Gita 
chemistry
We add excess NaCl solution (58.44 g/mol) to 64 mL of a solution of silver nitrate (AgNO3 169.88 g/mol), to form insoluble solid AgCl. When it has been dried and weighed, the mass of AgCl (143.32 g/mol) is found to be 1.91 grams. What is the molarity of
asked by Jake 
geometry
If m
asked by Melissa 
Physics
In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the
asked by George 
Math
John wants to build a corral next to his barn.He has 300 feet of fencing to enclose three sides of his rectangular yard. a. What is the largest area that can be enclosed? b. What dimensions will result in the largest yard?
asked by Roger 
Physics
A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature
asked by Eric 
geometry
find the measure of an anGle if five times the measure of its complement is 24 derees less than twice the measure of its supplement. What is the equation? What is the measure?
asked by Dre 
statistics
Suppose that the proportions of blood phenotypes in a particular population are a follows: A = .42 B = .10 AB = .04 O = .44 Assuming that the phenotypes of two randomly selected indiviuals are independent of one another, what is the probablility that both
asked by Dre 
Physics
#1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power
asked by Sam 
nath
the graph shows the annual heart attack rate per 10,000 men as a function of blood cholesterol level . Use the graph to approximate the annual heart attack rate per 10,000 men for those whose blood cholesterol level is 250mg/dl.
asked by Anonymous 
Math
Solve this problem using the simplex method. A company manufactures checker sets and chess sets. Suppose each day the company has available 1200 boards (which can be used for both games) and 80,000 units of wood for making pieces. Each checker set uses 20
asked by John 
Physics
Two boats are heading away from shore. Boat 1 heads due north at a speed of 3.7 m/s relative to the shore. Relative to boat 1, boat 2 is moving 35° north of east at a speed of 1.3 m/s. A passenger on boat 2 walks due east across the deck at a speed of 1.2
asked by Randal 
physics
The fastest major league pitcher throws a ball at 40.0. If he throws the ball horizontally, how far does it drop vertically on the 17.7 trip to home plate?
asked by kt 
Algebra
John wants to build a corral next to his barn. He has 300 feet of fencing to enclose three sides of his rectangular yard. a. What is the largest area that can be enclosed? b. What dimensions will result in the largest yard?
asked by Roger 
Physics
What is the period of the minute hand of a clock?
asked by Amy 
Physics
A chain composed of four identical links is suspended by a rope and does not move. What are the forces on each chain? (include where they come from)
asked by Richard 
physics !!
A jogger travels a route that has two parts. The first is a displacement A of 2.95 km due south, and the second involves a displacement B that points due east. If the resultant displacement A+B has magnitude 4.13 km, what is the magnitude of B? Im not sure
asked by Em 
11th grade
A flowerpot falls from a window sill 38.8 m above the sidewalk. What is the velocity of the flowerpot when it strikes the ground? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s. How much time does a passerby on the side walk below have
asked by Taylor 
physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 21 m/s at an angle of 58° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its
asked by Emily 
9th grade
Simplify the expression. 3 [ (15  3)^2 / 4] a. 36 b. 108 c. 18 d. 9
asked by Dina 
science
a nickel is about 2 millimeters thick,or 2/1,000 of a metter. how many nanometers is?
asked by yuku 
Chemistry
The Specific Gravity of kerosene is 0.786/ What is the volume occupied by 7.75kg of kerosene?
asked by Natalie 
Physics
#1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power
asked by Bartholomew 
Marketing
Which of the following statements best describes the modern view of marketing?
asked by Anonymous 
poetry
Could you tell me how to go about analyzing or theme or poem "A Kite Is a Victim" by Leonard Cohen What are juxtapositions ?
asked by Kelsey 
Math ( Surveying )
Need help with this problem! Thanks in advance. The ground clearance of an overhead electrical cable must be determined. Surveyor B is positioned directly under the cable (surveyor B can make a position check by sighting past the string of a plumb bob,
asked by Dale 
Chemistry
The Specific Gravity of kerosene is 0.786. What is the volume occupied by 7.75kg of kerosene? Is it 7.75/0.786?
asked by Natalie 
english
How can I fix this sentence? If I knew that the caring journal would be due on September 27, I would try to finish it on the fourth week.
asked by flame 
chemistry
draw a lewis structure for a resonance form of ClO2 showing the lowest possible formal charges and give the oxidation numbers of the atoms
asked by Missy 
Physics
A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 961 and 1540 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. (a) What is the tension in the cable below the worker?
asked by Sarah 
History
Could someone explain what social, economic, and political issues are? Social would be among the people? Economic Political issues that have to do w/ gov?
asked by Amy~ 
Clothing and textiles
What does Disposing Fullness means?
asked by Shawna 
Physics
A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be placed into a bath of hot water. After this treatment, the temperature of the lid and the jar are both 60 oC. The inside diameter of the lid is 8.0 cm at 20 oC. Find the
asked by Eric 
physics
A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr. At what angular speed do the wheels turn? How long do they take to turn once around?
asked by venuya 
math
Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age. Find their present age. I have a answer already but I still not get it,please help me out with answer
asked by Thanh 
chemistry
f 89 of heat are added to a pure gold coin with a mass of 15 , what is its temperature change? Specific heat capacity of gold is 0.128 .
asked by Kyle 
math
Assume that there are 13 frozen dinners: 5 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them. What is the probability that at least 2 of the dinners selected are pasta dinners?
asked by Jordan 
READING
GRUMBLEEXPLOTELANGUAGESMUMBLEDSTREAKSTUBBORNDARTED Jack was so upset he could not stand still. He____________ from room to room looking for his spanish textbook.
asked by LUZ 
Physics
A student sees a flowerpot pass his 2m high window on the fourth floor in 0.093 seconds. The distance between floors is 4.0m. From which floor did the pot fall?
asked by Kris 
physics
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 275 m east, 215 m at an angle 30.0° north of east, and 150 m south. Find the resultant displacement from the cave entrance.
asked by vicky 
math
how is the limit of x^2/(1cos^2(x)) as x goes to 0 is 1. I know how to show this using l'hopital rule. But can you show this using the rule that limit of (1cosx)/x=1 as x goes to 0 and limit of sinx/x=1 as x goes to 0
asked by flame 
medicine
The concentration of Lasix is 5%. How many milligrams are in 0.5ml?
asked by Jessica 
11th grade
When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.8 m/s2 as it slows from 8.8 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.
asked by Taylor 
math
solve the equation 9(x4)+x=10(x4)+4
asked by Anonymous 
science
Which would be most appropriate to measure the mass of my pet panda in? a. kilograms b. centigrams c. Gigagrams d. milligrams its kilograms??????
asked by Ross 
Statistics
The heights in inches of 14 randomly selected adult males in LA are listed as: 71, 67, 70, 59, 71, 68, 67, 71, 80, 68, 74, 69, 72, 68. 1. Display the data in a stemandleaf plot. 2. Find the mean. 3. Find the median. 4. Find the mode. 5. Find the range.
asked by Shawna 
Chemistry
What is the molecular, ionic and net ionic formula for Acetic acid and sodium nitrate Molecular: Ionic: Net Ionic:
asked by Melissa 
physics
Consider the position of a ball thrown down with an initial speed of 18 m/s. What will be its position after 2.8 s? Let the initial position be 0. The acceleration of gravity is 9.8 m/s2. Answer in units of m
asked by Anonymous 
physics
A fully loaded 737 aircraft takes off at 250km/h.If its acceleration is a steady 3.3 , how long a runway is required? How much time does it take the plane to reach takeoff?
asked by kt 
Physics
As part a of the drawing shows, two blocks are connected by a rope that passes over a set of pulleys. One block has a weight of m1 = 562 N, and the other has a weight of m2 = 758 N. The rope and the pulleys are massless and there is no friction. (a) What
asked by Sarah Lothrop 
Math
a disc jockey must play 14 commercial spots during 1 hour of a radio show.Each commercial is either 30 seconds or 60 seconds long. If the total commercial time during 1 hour is 11 min, how many 30second commercials were played that hour. How many
asked by Anonymous 
Math
one day a store sold 21 sweatshirts. White ones cost $10.95 and yellow ones costs $13.50. In all $275.85 worth of sweatshirts were sold. How many of each color were sold How many white sweatshirts were sold? How many yellow sweatshirts were sold?
asked by Anonymous 
macroeconomics
what happens to the net public debt if the federal government operates next year with a : budget deficit, balanced budget, budget surplus
asked by aimee 
statistics
A coin is weighted in such a way that a tail is twice as likely to occur as a head. If the coin is tossed twice, what is the probability of obtaining two tails?
asked by Lori 
math
find the linear function f(x)=mx +b, whose graph has the given slope and yintercept slope is 13/9 and yintercept is (0.6) the linear function is f(x)=
asked by Anonymous 
chemistry
Calculate the amount of heat required to raise the temperature of a 25 sample of water from 7 to 25.
asked by Anonymous 
Chemistry
The Specific Gravity of kerosene is 0.786. What is the volume occupied by 7.75kg of kerosene? Is it 7.75/0.786?
asked by Natalie 
Chemistry
I like to write and name chemical formulas, but some formulas just confused me really bad, so I would like help getting back on track. I don't understand this. NiPO4: I know that Ni = Nickel, and PO4 = Phosphate, but how come there isn't the 3 charge on
asked by Anonymous 
Physics
A particle has ⃗r(0) = (4 m)j and ⃗v(0) = (2 m/s)i. If its acceleration is constant and given by ⃗a = −(2 m/s2) (i +j), at what time t does the particle first cross the x axis? Answer in units of s. part 2. At what time t is the particle moving
asked by Christian 
physics
A 5.10 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.450. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator
asked by Dawn 
Accounting
It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by Brian 
chemistrymostly for bobpursley I have a question
ok i made a post with this question earlier: A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the mass of a carbon nucleus? u responded with this formula: 6*massproton+6*masscarbon=n*masselectron look up the
asked by Sarah 
medicine
A cat on IV fluids must receive 30ml/hr of saline. The drip set provides 60gtt/ml. How many gtt/sec should the drip be?
asked by Jessica 
8th grade
calculate each power of 10 what pattern do you see in part (a) explain hoe your pattern can show that 10 to the pwoer of 0=1
asked by unknown 
Physics
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm behind this lens is a concave lens with a focal length f2 = 13.9 cm. The object to be photographed is 4.06 m in front of the
asked by Rudi 
Math(Please help)
Find the real solutions of each equation. 1) 1 / (x+6)^2 = 1 / (x+6) + 12 2) 8x^2/3  39x^1/3  5 = 0 I have no idea how to do these. Please help!!! Thank you!
asked by Hannah 
marketing
is the process of naming broad productmarkets and then segmenting these broad productmarkets in order to select target markets and develop suitable marketing mixes. A. Mass marketing B. Market segmentation C. Diversification D. Market positioning
asked by Anonymous 
Calculus
Determine how much time, to the nearest tenth of a year, is required for an investment to triple in value if interest is earned at the rate of 3.5% compounded continuously. (use A=Pe^rt
asked by Jessica 
10th grade
analyze the responses to the spread of buddhism in china
asked by Anonymous 
Math
A basketball player hits 90% of his shots. What is the probability tat he makes the next 3 shots?
asked by Anonymous 
algebra 2
compare each pair of numbers. Use < or > o.45,0.405
asked by Anonymous 
english
How do i make this a stronger thesis statement? There are many circumstances that effect the actions of fictional characters.
asked by mikaliah 
math
Pretend the program in Senegal had been reducing infant mortality at a rate of 11 % per year. How long would it take for infant mortality to be reduced by 35 %? How do I go about solving this problem?
asked by Kayla 
statistics
P(A)=.37, P(B)=.19, P(A and B)=.13. What is the probability that A doesn't occur or B does?
asked by Lori 
Physics
A monkey is chained to a stake in the ground. The stake is 2.81 m from a vertical pole, and the chain is 3.61 m long. How high can the monkey climb up the pole?
asked by Anonymous 
Chemistry
This is not a homework question, I'm just asking this casually. Is the metal Silver a good conductor of electricity?
asked by Anonymous 
Science
How many neutrons in actinium?
asked by BrXce 
12th grade physics
Helium is monatomic with a relative atomic mass of 4. calculate (i) the density of helium gas at a temperature of 0 degrees Celsius and a pressure of 101kPa and (ii) the rms speed of the helium atoms under these conditions
asked by Enya 
geometry
If three time the supplement of an < is subtracted from seven times the comp. of the
asked by Amy 
math
Maximize P = 4x + 20y subject to these constraints: 2x + 15y ≤ 700 5x + 10y ≤ 1150 5x + 5y ≤ 1000 4x + 15y ≤ 980 x ≥ 0, y ≥ 0 Maximum value for P = ?. This value of P occurs when x = ? and y = ? If u1, u2, u3, and u4 represent the slack
asked by John 
physics
two notes wich have frequency ratio 2:1 are said to be separated by an octave.A frequency wich is separated by an octave from middle C(256Hz) is?
asked by kabelo 
world history
Compare and contrast China and India ca. 1400. What are some important political differences? Why do you think those differences might matter in the way world history develops in the period from 1500 to 1800?
asked by paul 
world history
Why does Marks begin with China? What was happening there in the 1400s that matters to the course of world history?
asked by paul 
mgmt 303
some people have claimed that the increasing technological sophistication required by many of today's corporations has led to a return to job specialization.
asked by larry 
SCIENCE!!
a. Find the speed required to throw a ball straight up and have it return 6 seconds later. Neglect air resistance. b. How high does the ball go? Please Help!! Thanks!! :)
asked by Smiley 
English
How could I compare the passage from "from Dust Tracks on a Road" and "from The Autobiography"? Please give an idea.
asked by bindiya farswani 
Calculus
The manager of a weekend flea market knows from past experience that if he charges x dollars for a rental space at the market, then the number y of spaces he can rent is given by the equation y= 2004x. Is this correct? Slope represents the relationship
asked by CM 
geography (grade 6)
PLEASE HELP!! i posted the question yesterday, they were unable to help me !please help me ! what is the recent environment issue that affected a canadian business that sellls its products internationally.
asked by Ryan 
10th grade
A rational number is ____ a real number. a. always b. never c. sometimes its always ???????
asked by David 
Math
Which pattern do you see in the multiples of 9? and Which pattern do you see in the multiples of 1?
asked by Mia 
physics
A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?
asked by tiffany 
math 8
what is the meaning of order if y=x is to the order of 1 then what is the order for y=sin x ANSWER: is that also the order of one please explain.
asked by zeda 
science
what is the definition of a compound machine?
asked by steven 
math
Fill in the correct math operations only once (+, , *, /) 8_2_1_3_4=5
asked by kody 
ethics
What is virtue and how do we acquire it? this is according to aristotle
asked by justin 
math
Maximize P = 4x + 20y subject to these constraints: 2x + 15y ≤ 700 5x + 10y ≤ 1150 5x + 5y ≤ 1000 4x + 15y ≤ 980 x ≥ 0, y ≥ 0 Maximum value for P = ?. This value of P occurs when x = ? and y = ? If u1, u2, u3, and u4 represent the slack
asked by Anonymous 
Chemistry  v/v versus w/w
Thanks a lot:) So just to confirm: normally for any chemical bought from manufacturer, if it is not stated, the % usually means v/v? Seems like for conc sulphuric acid, when it is stated 97% sulphuric acid, it means 97% w/w sulphuric acid? Thank you very
asked by annie 
Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
asked by Ali 
Physics
Part a of the drawing shows a bucket of water suspended from the pulley of a well; the tension in the rope is 92.5 N. Part b shows the same bucket of water being pulled up from the well at a constant velocity. What is the tension in the rope in part b?
asked by Sarah 
english
what is the complete verb phrase? and helping verb? Who has been doing research on early polar flights? Is it has research? I can not include any of the words that may separate the parts of the verb phrase
asked by hunter 
algebra 2
7x/3=5
asked by Anonymous 
English
What is the difference between hearing and listening?
asked by Jim 
algebra 2
2(53x)
asked by Anonymous 
chemistry
Which of the following statements about protons are false? (Select all that apply.) 1)Protons have twice the mass of neutrons. 2)Protons have a much greater mass than electrons. 3)Protons have about the same mass as neutrons. 4)Some atoms do not have any
asked by Sarah 
Physics
A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be placed into a bath of hot water. After this treatment, the temperature of the lid and the jar are both 60 oC. The inside diameter of the lid is 8.0 cm at 20 oC. Find the
asked by Eric 
college physics
A 5.10 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.450. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator
asked by Denise 
physics
A box is sliding down a ramp sloping 25° above the horizontal. The coefficient of kinetic friction is 0.15. What is the acceleration? The answer is 2.8 m/s^2. How can this be solved with out mass?
asked by Angela 
macroeconomics
match each of the rationales for finacial intermediation listed below with at least one of the following: insurance company, pension fund, savings bank. a. adverse selection b. moral hazard c. lower managment cost generated by larger scale
asked by aimee 
chemistry problem
A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the mass of a carbon nucleus? ok. i think theres some type of formula or some trick to figure this one out but i don't know what it is. If you guys know how to
asked by Sarah 
physics
How much force must a weight lifter apply to a 97 kg barbell to accelerate it upward from rest a distance of 85cm in 3.0 secs? Step by step instructions if possible please. I really need help.
asked by Anonymous 
geometry
the measure of angle xyz is 140degree what is the value of x (2x+6)degree
asked by thomas 
Chemistry
What is the difference between a group and a period in the periodic table? A: The difference between a group and a period in the periodic table is that a group is each column/family with similar properties and a period is each row going up from charges 1+.
asked by Anonymous 
Math
BW made c cookies to divide evenly amoung O,TS,SB,and RD and BW himself. Write an algebraic expression that represents the number of cookies each person will receive. I have no clue...sorry those were intitals the problem characters had long names.
asked by Kelly 
algebra
write an equation through (2,1) are parallel to the line y=1/2x+1
asked by ... 
algebra
2(x2)=2[x4(x2)+x]
asked by Jennie 
college
what will be the final temperature if a 5.00g block of aluminum at 37.0 celsius gives off 25.0 J of heat to its surroundings?
asked by notsure 
chemistry
How many grams of NH3 will have the same number of molecules as 15.0 grams of C6H6?
asked by Perry 
Chemistry problem
I refer to my earlier post on v/v versus w/w. I would be very grateful for any advice provided. For 95% ethanol purchased from manufacturer, we normally take it as 95%v/v. For 98% sulphuric acid, it seems like it is normally 98% w/w. I have also seen a
asked by annie 
physics
A beam of negligible mass of length 3 m is suspended by a string attached to a wall such that the angle between beam and string is 30 degree, and the beam is held horizontal with a sky weight. Find the tension in the string? Find the compression force on
asked by kat 
calculus
Using a graphing utility, graph and approximate the zeros and their multiplicity. A.x=0,multiplicity 2;x=7,multiplicity 3 B. x=0,multiplicity 2; x=7,multiplicity 1; x=7, multiplicity 2 C. x=0,multiplicity 3;x=0,multiplicity 2 D.x=0,multiplicity 3;x=7,
asked by CC 
ECONOMICS
When does price remain below the equilibrium ? When does price remain above the equilibrium ? What is economics cost and law of increasing cost ?
asked by RIMA 
algebra
5+10y=neg30 what is the anser?
asked by t.j 
algebra
Solve the given equation for n. 12(n+9)=3(36+4n)
asked by Anonymous 
math
Is this a star polygon, a polygon, or other, how many sides does it have? {9/3}
asked by Zach 
Linear Programming
Maximize P = 16x + 80y subject to these constraints: 2x + 20y ≤ 430 4x + 70y ≤ 1400 8x + 30y ≤ 980 10x + 10y ≤ 1000 4x + 30y ≤ 700 x ≥ 0, y ≥ 0 Maximum value for P = ?. This value of P occurs when x = ? and y = ? If u1, u2, u3, u4, and u5
asked by JP 
SCIENCE!!
a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please
asked by Happy Face 
physics
We use many chemicals in our daily lives. How can these chemicals affect you and what can you do to minimize these effects? The chemical industry is enormous in the industrialized world. How has society benefitted from advances in the chemical industry?
asked by Anonymous 
physics
a pendulum of length L=9.8m hangs in equilibrium and is then given velocity v=0.2m/s at its lowest point.What is the magnitude of the subsequent oscillation?
asked by kabelo 
Science
What are 2 processess that change earth slowly? The ___1____, which includes the__2____ and part of the _____3_____, is divided into plates that carry all of the Earth's lands and oceans. These plates float on a ___4____ layer of rock in the upper mantle
asked by Mia 
Physics  Inelastic Collisions
The speed of a pitched baseball is 46.0m/s. You want to know how fast is your school's star baseball pitcher could throw. You make a pendulum with a rope and a small box lined with a thick layer of soft clay, so that the baseball would stick to the inside
asked by Shaila 
math
solve the equation and check (9x4)(2x6)+7=8(x9)(6x+2)+4
asked by Anonymous 
12th grade maths
how to work out the percentage of a triangle that is shaded by a circle?? (circle is at a tangent to all 3 sided if that helps) thanks
asked by daz 
math
Maribel's city imposes a tax that is 40% of the state tax she pays. Her taxable income is $198.50 per week. Her state imposes tax at a rate of 5%. How much state and local tax is withheld from her weekly pay?
asked by tynequa 
SCIENCE!!
a. Find the speed required to throw a ball straight up and have it return 6 seconds later. Neglect air resistance. b. How high does the ball go? Please Help!! Thanks!! :)
asked by Happy Face 
Math
My question says: Find the exact alue of x for which (4^x)*(5^[4x+3])=(10^[2x+3]) I can't seem to come to a solution. We're reviewing last year's lessons, so change of base and logarithmic expressions are what we're going over right now. Here's what I've
asked by Anonymous 
earth science
Earthquakes and valcanoes change Earths surface quickly. Can you name at least two processes that canchange earhts surface slowly?
asked by Mia 
US History: WWI
Why would this poster "Joan of Arc Saved France: Women of America, Save Your Country/Buy War Savings Stamps," if a propaganda poster? I don't understand. It's not misleading information.
asked by Amy~ 
Math
Beyounce has a stack of $1 bills,Kelly has some $5 bills, and Michelle has more than $10 bills. Each person has the same amount of money. What is the least amount each one has?
asked by Shakira 
Math
Use the simplex method to find the maximum value of P = 3x + 3y subject to these constraints: 3x + 2y ≤ 360 x  y ≤ 60 y ≤ 120 x ≥ 0, y ≥ 0 What is the maximum value of P? What is the corner point which maximizes the profit? x = ? y = ?
asked by John 
math
x=(5.155.89i)+(30/(5.155.89i)) i is the square root of (1) the answer sholud equal 10.3 x=10.3 but could you show me how , i am having problem to figure it out. thank you.
asked by layth 
Astrology / Physics
How do we calculate the radial velocity after the recession velocity is known?
asked by Alan 
History
what are some similarities and differences between these three mediums: propaganda, advertising and bias? What tricks do you feel are frequently used in propaganda? Why?
asked by Rebecca 
US History
Could Patriotism and propaganda posters be considered two different effects of US in WWI? At first I thought sure, but than the posters did cause patriotism so...
asked by Amy~ 
economics
Help please You are a utilitarian social planner and have a very limited number of vaccines to a new and potentially deadly virus. How do you allocate them? Do you: (A) give them to specific groups, such as highrisk populations, or (B) sell them to the
asked by chris 
math
The sum of my two digits is 13. I am not divisible by 2. List all possible numbers I could be.
asked by Jan 
Biology
Covalent bonds between nucleotides in DNA are found between: A) a phosphate group and a nitrogenous base. B) a sugar and a nitrogenous base. C) nitrogenous bases. D) phosphate groups. E) a sugar and a phosphate group. Thank you.
asked by Bee 
11th grade
A box is sliding up an incline that makes an angle of 16.0° with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.30m/s.
asked by shan lalani 
SCIENCE!!
a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please
asked by Smiley 
statistics
P(A)=.37, P(B)=.19, P(A and B)=.13. What is the probability that A doesn't occur or B does?
asked by Lori 
5th grade
What is subject and verb of this sentence...The rest of story was never told.
asked by Lisa 
physics
consider a simple harmonic oscillation with m=0.5kg,k=10N/m and amplitude A=3cm,if the oscillation is released from rest at x=A when the clock is set to t=0,determine the position of the oscillation at t=2s
asked by kabelo 
science
a nickel is about 2 millimeters thick,or 2/1,000 of a metter. how many nanometers is?
asked by lala 
History
When US entered WWI, what century would that be? 20th century?
asked by Amy~ 
ECONOMICS
AS PRICE INCREASES WHY WOULD QUANTITY DEMAND ALSO INCREASE ? SHOULDNT QUANTITY DEMAND INCREASE WHEN PRICE DECREASES ?
asked by RIMA 
poetry
What is the theme presented in the poem: "You are reading this too fast," by Ken Norris?
asked by Robert 
science
we have done experiment in school and for homework we must write chemical reactions that have happend during the experiment. the experiment was like this : first we took an unknown substance than we have put some CuO , we mixed that two substances together
asked by ana 
college physics
A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up?
asked by Kelly 
sorting
sorting the same set in different ways
asked by vanessa 
math
Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age. Find their present age.
asked by Thanh 
math
x.y=30 and x+y=10.3, I end up with x=(21.83+60.66i)/(5.155.89i). i is the square root of (1). could you please show me how this equation will = 10.3 I am having problem to figure it out. thank you.
asked by layth 
Math
Maximize P = 16x + 80y subject to these constraints: 2x + 20y ≤ 430 4x + 70y ≤ 1400 8x + 30y ≤ 980 10x + 10y ≤ 1000 4x + 30y ≤ 700 x ≥ 0, y ≥ 0 Maximum value for P = ?. This value of P occurs when x = ? and y = ? If u1, u2, u3, u4, and u5
asked by John 
english
What is the theme of the poem A Kite is a Victim. What are juxtapositions in this poem
asked by Kelsey 
SCIENCE!!!!!!!!!!
a. Find the speed required to throw a ball straight up and have it return 6 seconds later. Neglect air resistance. b. How high does the ball go? Please Help!! Thanks!! :)
asked by Smiley 
MATH:)¤
JayZ's office contains 12 file cabinets. Three cabinets have 4 drawers,all the other cabinets have 5 drawers. JayZ's assisant is typing new labels for each file cabinet drawer. How many labels will she need?
asked by Asia 
LOCAL STANDARDS AND REGULATIONS
Mrs. Carroll and Ms. Howard decide to divide all profits and share all losses using a fixed ratio. If the ratio agreed upon is in proportion to their original investment, what would be Ms. Howard's share of a $60,000 endofyear profit? (Hint: The original
asked by Anonymous 
environment
what is a recent environmental issue that has directly affected a Canadian business that sells its product internationally please help me!!
asked by Ryan 
chemistry
How many {\rm NO}_{2} molecules would form as products if the reaction had a percent yield of 75\%?
asked by dj 
algebra 2
to which set of numbers does each number belong 12 7/8
asked by Anonymous 
Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
asked by Ali 
english
I'm kinda getting stumped. What are some other characteristics people kind have like their family besides physical ones?
asked by Kenneth 
7th grade Math
Lola excercises m minutes per day 5 days a week. Write an alegrabic expression that represents how many minutes '50' excercises in two weeks. Could the answer be 50c because it feels like I'm missing something.HELP
asked by Ciera 
trig
sinL=6/7 L(alfa)=?
asked by lejla 
physics
A model rocket is propelled upward by a cylinder of compressed water. The cylinder emits water at a rate of 0.050 kg/second with an exit speed of 80.0 m/s. Initially, the rocket has a mass of 0.15 kg, including the water cylinder. What is the rocket's
asked by Angela 
calculus
a right circular cylinder has a volume 600cubic cm. if it costs $2 for the material needed to make the top and bottom and $3 for the material needed to make the sides, what is the radius and height of the cylinder that would cost the least?
asked by dave 
Math
(i meant to say) Will the expression 5 _ x always be less than 5? Explain.
asked by Calasia 
algebra 1
in the equation below, y is a function of x. y = 4x + 8 if the value of x isdecreased by 3, how will the value of y change?
asked by Jamie 
Math
The corners of a square lie on a circle of diameter 0.33 m. Each side of the square has length L. Find L.
asked by Liz 
Math  Intersection of planes
You are given the following two planes: x+4y3z12=0 x+6y2z22=0 a) Use the two original equations to determine two other equations that have the same solution as the original two. ANS: the original two are not parallel in anyway so can I just take
asked by Shaila 
language
what is the difference between the s at the tropics and the s at the end of needs
asked by Anonymous 
Microbiology
Utilization of amylase producers is “big business” can you find or think of any uses for the amylase production? [think of the high soda consumption in the U.S., what makes it so sweet?]
asked by C 
History
The U.S. Treasury department can also be known as the government? like in a more broader sense.
asked by Amy~ 
Calc Repost
Express the function in the form f o g. G(x)= The cube root of (x/1+x) So, (f 0 g)(x)= f(g(x))= f(cube root of x/1+x)= I don't know how to finish the problem because it does not give you the information for F(x)???
asked by Chelsea 
Science
Matching: Predation, Competition. Red tailed hawks and black racer snakes prey on the same species of rodents in the same habitat. White tailed deer eat tree leaves. Match and explain why.
asked by Michael 
math
how many square decimeters make 1 square meter?
asked by Bradyn 
3rd grade
mary's birthday is between june 13 and june 23. the date of her birthday is not an even number. the sum of the digits is 3. when is mary's birthday?
asked by ALEXIS 
Biology
In a proper lab report, is first person allowed? Or should I avoid using "I"? Thanks.
asked by Shanleigh 
algebra
if x.y=30 and x+y=10.3, what is x? i been told by my teacher to use quadratic formula , and him and i did it , we end up having , x1=5.155.89i and x2=5.15+5.89i, y1=30/(5.155.89i) and y2=30/(5.15+5.89i).and he told to go from there, but i cant get
asked by layth 
physics
What happens when the frequency of a force applied to a system matches the natural frequency of vibration of the system
asked by kabelo 
Language Arts
My daughter is writing a paper on her 3 favorite things about fall. She has chosen Halloween, Volleyball and Football. She is having a hard time with the introduction of it. Any ideas?
asked by Tracy 
Social studys
Hi i need help on a 23 page essay. The question its based on is" explain and describe how geographers use thier tools to interpret grographic questions" I'm in 7th grade THANKS!! :)
asked by Gabrielle 
English
Thank you for your last corrections. Here are some more sentences I'm not sure of. 1) John was a successful middle class wool dealer. In 1557 his fortunes began to decline and he ran into debts. 2) He was part owner in (?) the most prestigious public
asked by Franco 
SCIENCE!!
a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please
asked by Happy Face 
English
What is the subject covered in the encyclopedia with the call number 150 ENC? Please Help :P Thanks!! :))
asked by Smiley 
algabra
what is the reduced fraction of (25)/30
asked by t.j 
Math(Please help)
I know I posted this yesterday but I really do not understand this and I did not quite understand the comment on what to do. Find the real solutions of the equation. x = 2 sqrt6x36
asked by Hannah 
math
Simplify the expression. 17 – 6 × 10 ¸ 2 + 12 a. 67 b. 59 c. –1 my answer 1 ?????
asked by Ross 
11th grade
When Maggie applies the brakes of her car, the car slows uniformly from 15.4 m/s to 0 m/s in 2.41 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m.
asked by Taylor 
Physics
Absolute temperature is proportional to the average kinetic energy of the atoms. True or false?
asked by Rissa 
social studies
WHAT ORESIDENT ORDERED AMERICAN TROOPS TO SEIZE THE PORT OF VERACRUZ IN APRIL 1914?
asked by lexi 
Re: social studys
Im the girl qho just asked about my 23 page essay. Its based on this "explain and describe how geographers use thier tools to interpret geographic questions. Remember, i'm in 7th grade. (ms.sue) my teacher said that its based on out notes and its
asked by Gabrielle 
compensation and benefits
what can you do to build in strategic compensation into your organization.Use the designation (ABC) company or college to keep anonymity
asked by Marcela 
8th grade
write each number as the product of prime factors. (a) 42__________________ (b) 110_________________ (c)...__________________ (d)...__________________ .... ....
asked by raluca 
social study
the definition of unifying characteristics? an example of a region in classroom, school and community?
asked by Amy 
chemistry
write the lewis structure for dinitrogen oxide. include the 2 resonance structures and formal charges where appropriate.
asked by Missy 
physic
The angular position of a point on the rim of a 45.8 cm rotating wheel is given by θ(t) = 3.6 t2 − 2.8 t +7.5, What is the instantaneous speed v of the point at time t = 6.5 s?
asked by annie 
english
What is the subject a d verb of this sentence...The rest of the story was never told.
asked by Lisa 
math
x=(21.83+60.66i)/(5.155.89i) i is the square root of (1) then x should equal 10.3 but i do not know how to figure it out please show me hoe thank you
asked by layth 
calc 3
Find the limit ( e^3t i + tsin(1/t)j + arctan tk ) if it exists. If not say doesn’t exsist. (t→ ∞)
asked by rachel 
Calculus
Find the absolute maximum and minimum values of f(x)=(x^2)(e^(x/2)) on the interval [1,6]
asked by Joe 
Bio
The fiber in your diet is composed of: A) fat. B) cellulose. C) starch D) nucleic acid E) protein. Thanks!
asked by Bee 
college physics
An airport worker needs to make it across a luggage belt in order to retrieve a stuck suitcase. The belt is moving with 1.6 m/s, and the worker can run with v=1.7 m/s. If he wants to make it straight across the d=2.3 m wide belt, how long will it take for
asked by Kelly 
geography
list 5 states that are that are on the east coast
asked by monica michel 
Math(Please check)
Find the real solutions by factoring. 7x^3 = 2x^2 x^2(x+7) = x(x+2) x=0 x=7 x=2 Is this correct?
asked by Hannah 
history
how would the climate affect farming, trade , economy in new york? i don't know the answerr
asked by antonella 
Math
Rewrite rational exponent 3sqrt22
asked by Sandra 
Chemistry
Why does beta radaiation take place? If there is a website that can help me please post it. Thanks
asked by Jennifer 
Statistics
The amt of time cold sufferes will experience symptoms is normally distributed wiht a mean of 7.5 days and a standard deviation of 1.2 days what proportion of sufferers will experience in LESS THAN 4 days , also what proportion will experience sympotms for
asked by Lauren 
precalculus
2y^3 = 4e^(x/2)/(1+e(x/2)) my teacher gave this problem in my chem class and i don't know what he is really asking , does any one have an idea if i have to solve for y or what's going on.. how would this be done..
asked by Jessi 
business
what is the mening of trade agreements of germany and their proximity to trade partners. please and thank you.
asked by Lee 
algebra 2
3t(t+2)(3t+5t) for t=19
asked by Anonymous 
math
in 1920 the record for a certain race was 46.4 sec. In 1960 it was 45.6 sec. Let R(t)=the record in the race and t= the number of years since 1920. a. find a linear function that fits the data. b. Use the function in (a) to predict the record in 2003 and
asked by Anonymous 
10th grade
3 points on a line Q,P,R (In order) if QP =2x and QR =2x+1 and PR =21 Solve for x
asked by Sammy 
geometry
radius of 3960 miles cause there 5280 feet find length in feet by circumference of earth use ~3.14
asked by tie 
Chemistry
Can some explain how I can determine if a substance has iondipole, dipoledipole, ionion or london dispersion forces? I'm really confused and have a test soon please help!
asked by Anonymous 
math
help me find de equivalent fraction for 10/18
asked by ale 
english
what are the similarities between "A Rose for Emily" and "Blu Winds Dancing"
asked by donna 
Math
Jerimiah is thinking of a number which,when multiplied times itself gives you a product of 729. What is Jerimiah's number?
asked by Zaylen 
Physics
An electron is a subatomic particle (m = 9.11 *10^31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.31 * 10^5 m/s to a final velocity of +2.21 * 10^6 m/s while traveling a distance
asked by Gerald 
University Researchlevel Biology
Hello, this is an upperlevel question, and I would sincerely appreciate help before Tuesday. I am reading a journal article, and there is one conclusion in it that I do not understand. It predicts a postsynaptic mechanism when EPSP amplitudes do not vary
asked by Jane 
physics
The acceleration due to gravity on planet X is one fifth that on the surface of the earth. If it takes 3.5 s for an object to fall a certain distance from rest on earth, how long would it take to fall the same distance on planet X? Answer in units of s.
asked by Anonymous 
math
determine whether the correspondence is a function . Detroit lions,tigers,pistons. New Yorkrangers, jet, yankees. Is this correpondance a function.
asked by Anonymous 
Math
Fantasia bought 15 new books to add to her collection of book 'b'. 2rite an algebraic expression that represents the total number of books in Fantasia's collection now. Will it 15b or 15+b or its other and if so may you explain:)
asked by Kaylen 
Physics
On a supermarket parking lot, a car is pulling out and bumping into an oncoming car. The car pulls out with 0.8 m/s, while the oncoming car has a speed of 1.4 m/s. The angle between the velocities is 24 degrees, as indicated in the figure. What is the
asked by Holly J 
physical
Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 6.9 N, acting 54° north of west. What is the magnitude of the body's acceleration?
asked by jindi 
Poetry Grade 9
A rhyming poem can be "abcb" right? and it doesn't matter about syllables?
asked by Maddison 
6th grade
why is your loyal frend
asked by Anonymous 
Math
is a number with the most digits always greater?
asked by Jon 
Math
Describe the figure or polygon produced by interpreting the symbol {8/4}
asked by Debbie 
english
Is this sentence better? Although Johnson does not know whether she is doing a right choice,I believe that she does make a good decision in contacting other doctors and nurses.
asked by flame 
chemistry
Time p.m. Mass (g) 1:00 2.5754 1:08 2.5621 1:15 2.5615 1:24 2.5609 1:31 ? How do I predict the mass at 1:31 of this solid that is weighed every 5 minutes while drying?
asked by Morgan 
algebra 2
to which set of numbers does each number belong? 79
asked by Anonymous 
geometry
If ef=2x+4,fg=4x10,and eg=12 find the values of x,ef and fg?
asked by Becky 
science weather
would you expect to find a greater variety of climates on a hill at 11degreesN or at 65degreesN? whyyy? :)
asked by Taylor 
science
which is higher 10degrees north or 65 degrees north?
asked by taylor 
8th grade math
my project is to complete the October calendar, using the following variables in algebric expression to represent each day in the month. Each expression must include all four variable using each variable exactly one. a=1 b=2 c=3 d=4
asked by Tee 
math 115
I need help please, Find an equation of the line having the given slope containing the give point m=5/6(5,8) 5/6+ 40/6 is this correct and if not can you explain to me what I am doing wrong please
asked by Sydney 
chemistry
what is the minimum number of electrons that would be expected to be in the valence shell of As in AsCl
asked by kabelo 
english
how can i use appositives in a conservation with a friend
asked by stephanie 
Physics  Power Law Data Analysis
In an experiment, two variable quantities, x and y were measured. The relation between x and y is thought to be: y= 4(pi)b(x)^3 x(cm) +/ 0.02cm 0.67 0.80 0.90 0.95 y(g) +/ 0.25g 2.25 4.00 5.52 6.60 a) Draw a complete table that allows you to plot the
asked by Shaila 
MATH
a ramp rises 1.7ft vertically and 5.4ft horizontally. Express the slope as a grade
asked by Anonymous 
algebra 2
81/2x=3
asked by Anonymous 
English Literature
What is Beowulf doing in lines 12501255 when he talks about the sword as a person but really isn't trying to personify it? and why is that even important?
asked by Alexa 
algebra 2
3>2x or x4>2
asked by Anonymous 
Maths
hoe can i derive this equation. s(v)=(4pi)^1/3(3v)^2/3 and please explain.
asked by Joe 
Chemistry
A solution containing 42 of per 100.0 of water is cooled from 60 to 0 . What will happen during cooling?
asked by Johannie 
algebra 2
2x+8=3x+7
asked by Anonymous 
Algebra Alley(MATH)
Triangles ABC and RST are similar triangles. Angle A=2(x+15)^0 angle S=3x^0,and angle C=x^0. What are the measures of angles B,R,and T? What kind of triangles are they?
asked by Bionca 
algebra 2
3x2+4
asked by Anonymous 
PreAlgebra
combine like terms and solve equation: m/46=2
asked by Lucy 
science
how can you tell the easiest way if something is a chemical change or physical change.
asked by layth 
college physics
In the drawing, the weight of the block on the table is 478 N and that of the hanging block is 195 N. Ignore all frictional effects, and assuming the pulley to be massless. (a) Find the acceleration of the two blocks. (b) Find the tension in the cord.
asked by Denise 
spanish
what does al desierto mean in spanish
asked by Anonymous 
college
After you work out at the gym on a stationary bike for 43.0 minutes, the distance guage indicated that you have traveled 14.8 miles. What was your rate in km/hr?
asked by Sasha 
history
what is it where individuals control a mother company buy buying up stocks in this_____.
asked by nathan 
11th grade
what effect id geography have on the colonies
asked by Anonymous 
Chemistry
what is the lewis structure with lowest formal charges and label the charge of each atom in NO
asked by Missy 
6th grade English
what is the antomns for pledge
asked by Izeck 
Math 11
for f(x)= squareroot x to h(x)= f(3x12) sketch thegraph.... when i did this i did h(x)= f(3(x+4)) you know the negitve 3 isit reflection on the x ais or the y axis... thank you!!!
asked by priya 
geography
What part of a map tells the relationship of distance shown on the map to real distance on the Earth?
asked by vj 
chemistry
Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 > MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2 I got 7/24.3= .288 13.2/70.90= 1.861777 thats as far as i
asked by kellie 
prealgebra
6y+y=42 combine and solve...show work...please help
asked by Lucy 
Biology
Why are adaptations and why are they crucial for plant and animal survival?
asked by Rosita 
us history
what early colony did the colonists receive free passage to america
asked by shabe 
Biology
Matching: Predation, Competition. Red tailed hawks and black racer snakes prey on the same species of rodents in the same habitat. White tailed deer eat tree leaves. Match and explain why.
asked by Michael 
Chemistry
Examine the drawings in fig 11. What types of particles are modelled in each drawing? a) There are 3 red cubes in this drawing. (I don't understand what they mean by particles. Do they mean label the drawings as element, compound,?)
asked by Anonymous 
math
millions of dollars $ value find the rate of change
asked by Anonymous 
word search puzzle
moving about in a clumsy, noisy way
asked by Jay 
math
i'm trying to help my neice out, and i'm a little rusty here.... R(r1+r2)=r1r2
asked by dawn 
Physics
A frog with a mass of .14kg jumps by extending its legs 13.5cm, starting from rest in a time period of 112ms. What is the acceleration of the frog while it jumps?
asked by Meg 
Aberdeen
A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 120 m.
asked by James 
math
What are 2 ways to write 67,000 1 way is sixtyseven thousand What is another way
asked by Pattie 
AED 222
Can anyone please help me on this. I am having trouble trying to figure out what to write. Use the infromation you gathered throughout the course to distinguish what you think is the greatest strength and the greatest weakness of the current special
asked by Rayna 
maddison parish
How long must a ladder be to reach the top of a 20' wall if the ladder and the wall form a 32 angle (at the top)?
asked by James Gorgon 
Math
The square root with tha dash and slant thingy is between what two consecutive intergers? Will it be 2&3 or 8&9?
asked by Shakira 
Math
Tom has some cubes that are 2 cm. on each side. How many of them will fit into a box that is a cube with each side 4 cm. long?
asked by Dashuna 
Science
What is a mineral. What are the two main groups of minerals and provide some examples of each?
asked by Jim 
physics
The angular position of a point on the rim of a 45.8 cm rotating wheel is given by θ(t) = 3.6 t2 − 2.8 t +7.5, where θ is measured in radians and t is measured in seconds. What is the instantaneous speed v of the point at time t = 6.5 s?
asked by venuya 
math
my friend asked me how to do this probelm and i could not figure it out for the live of me. its simple im pretty sure. (65i)/(6+5i) I tried using the conjugate method and my answer did not come out correct. can you please answer this?
asked by Jason 
maths
hi how would you calculate altitude given airspeed, rate of descent and time? thank you!
asked by gina 
Physics
Dini is riding her bike eastward at a constant 9.5 m/s when a car pulls out of a side street a short distance in front of her. Dini applies her brakes and manages to stop in 2.5 s, just in time to avoid running into the car. Calculate Dini's average
asked by Emily 
6th grade
There are more earthquakes along the western coast of the United States than along the eastern coast. Explain
asked by Mia 
Math
I know I posted this yesterday but I really do not understand this and I did not quite understand the comment on what to do. Find the real solutions of the equation. x = 2 sqrt6x36
asked by Hannah 
english
predicate of...the insects damage property
asked by missy 
History
what are some similarities an differences between these three mediums: propaganda, advertising and bias? What tricks do you feel are frequently used in propaganda? Why?
asked by Rebecca 
Math
Tom has some cubes that are 2 cm. on each side. How many of them will fit into a box that is a cube with each side 4 cm. long?
asked by Dashuna 
physics
A bus travels 250 km south along a straightpath with an average velocity of 84 km/h to the south. The bus stops for 26 min, then it travels 240 km south with an average velocity of 70 km/h to the south. How long does the total trip last?
asked by Taylor 
spelling
to correctneed words ending x,cks,ks
asked by skye 
READING
GRUMBLEEXPLOTELANGUAGESMUMBLEDSTREAKSTUBBORNDARTED Jack was so upset he could not stand still. He____________ from room to room looking for his spanish textbook.
asked by LUZ 
chemistry
A lithium nucleus has three protons and three neutrons. How many electrons would it take to equal the mass of a lithium nucleus?
asked by blahh 
math
What are the defining characteristics of a golden triangle?
asked by Sarah 
4th grade
the meaning of median range
asked by alisha 
science
What are 3 items you can mix together and then they will settle into 3 different layers?
asked by kyle 
geometry
Given:
asked by Amy 
science
if a person has a mass of 75 kg what is his mass in grams
asked by graice 
math
if x.y=30 and x+y=10.3 what is x ?
asked by layth 
Bio
Covalent bonds between nucleotides in DNA are found between: A) a phosphate group and a nitrogenous base. B) a sugar and a nitrogenous base. C) nitrogenous bases. D) phosphate groups. E) a sugar and a phosphate group.
asked by Bee 
Accounting
1. Assume that Sprinturf uses a job order costing system. For the three basic cost categories of direct materials, direct labor, and overhead, identify at least two typical costs that would fall into each category for Sprinturf. 2. Assume a local high
asked by Dezmin 
PreCalculus
Find the values of x for which the line y=2x intersects the parabola y=(x1)^2+1. So I set the equations equal to eachother, and solved for x using the quadratic formula. The solution I got was: x=3.41 and x=0.59. Could someone please check my work.
asked by Jon 
11th grade
A bus travel 250km south along a straight path with the average velocity of 84km/h to the the bus stop for 26 min. Then in it travel 240km with avrage 70km/h to the south.How long long did the hold trip take? What is the average velocity of the trip?
asked by taylor 
math
a mountain path drops 296.3 ft vertically for every 4810ft horizontally. What is the grade for the path
asked by Anonymous 
physics
how would you calculate altitude given airspeed, rate of descent and time? I'm trying to find the change in altitude
asked by polly 
math
solve the given equation for n. 12(n+9)=3(36+4n)
asked by Anonymous 
6th grade english
Add two prepositional phrases to this sentence. Can you help me find something that makes sense for the second half of the sentence. Thank You. The singer impressed her audience. The singer beside the stage impressed ________ her audience.
asked by Jill 
english
Can someone please help me come up with a introduction to my paper. Its about circumatances and how they affect the characters
asked by mikaliah 
math
given the function k described by k(x)=x+2
asked by Anonymous 
Algebra
A certain can of iced tea contains 4% of the recommended daily allowance of sodium. The recommended daily allowance is 2500 milligrams. How many milligrams of sodium are in the can of iced tea?
asked by David 
math
x=(5.155.89i).(30/(5.155.89i)) i is the suare root of (1) what is x. please help me , i cant figure it out. thank you.
asked by layth 
medicine
A small bird needs 100mg/kg of antibiotic IM. The bird weighs 80g and the concentration of antibiotic is 100mg/ml. How many ml need to be given
asked by Jessica 
medicine
A 8 lb rabbit needs 300ug/kg of a 1% solution. How many ml should be given
asked by Jessica 
math
write each number as the product of prime factors. (a) 42__________________ (b) 110_________________ (c)...__________________ (d)...__________________ .... ....
asked by raluca 
math
Given the function K described by K(x)=x+2 find each following. K(0)= K(8)= K(12)= K(17)= K(d+4)=
asked by Anonymous 
Chemistry
I'll try to explain better, and will try to include a url. Examine the drawings in fig 11. What types of particles are modelled in each drawing? A) There are three individual cubes in that figure, they are all the same colour which is red. By individual I
asked by Anonymous 
math
rounded to the nearest ten i am 780. i am even.the sum of my digits is 17.
asked by mitch 
English
Name a database that would help you with current events. Please Help!! Thanks!!
asked by Smiley 
7th grade
what is the definition of hemisphere i need something easy to remember
asked by ebony padilla 
9gr
3  15 × 5 a. 90 b. 0 c. –72 d. 78
asked by Den 
personal finance concepts
Donna and Sherman Terrel are preparing a budget for 2010. Donna is a systems analyst with an airplane manufacturer, and Sherman is working on a master's degree in educational psychology. The Terrels do not have any children or other dependents. Donna
asked by David 
trig
find the value of x in the equation sq.rt x plus 5 = sq.rt x + 45
asked by kay