Questions Asked on
September 19, 2013

Mechanics
During a soccer game a ball (of mass 0.425 kg), which is initially at rest, is kicked by one of the players. The ball moves off at a speed of 26 m/s. Given that the impact lasted for 8.0 ms, what was the average force exerted on the ball? Show the solution
asked by Aries 
Mechanics
Typically, a tennis ball hit during a serve travels away at about 51 m/s. If the ball is at rest midair when struck, and it has a mass of 0.058 kg, what is the change in its momentum on leaving the racket? Show the solution and answer.
asked by Jason 
chemistry
Complete combustion of 4.80 g of a hydrocarbon produced 15.6 g of CO2 and 4.80 g of H2O. What is the empirical formula for the hydrocarbon?
asked by college chem 
math
Find the ordered quintuplet (a,b,c,d,e) that satisfies the system of equations a+2b+3c+4d+5e=177, 2a+3b+4c+5d+e=154, 3a+4b+5c+d+2e=146, 4a+5b+c+2d+3e=138, 5a+b+2c+3d+4e=165 This a really hard questioon but don't give up, please.
asked by Speedo 
Chemistry
If 10.11 g of limestone decomposes by heat to give 8.51 g of solid calcium oxide and carbon dioxide gas, what is the mass of carbon dioxide produced?
asked by Caleb 
Geography
Which statements describe the geographic theme of regions? Select all that apply. Different types of regions have little or no effect upon each other. Climate regions are defined by their average temperature and their political system. Physical regions can
asked by sony147 
chemistry
How many grams of O2(g) are needed to completely burn 24.0 g of C3H8(g)?
asked by college chem 
Chemistry
A solution containing 0.750g of an unknown substance in 30.0g of cyclohexane was found to freeze at 3.1 degree Celsius. What is the molar mass of the unknown substance?
asked by Princess 
english
Create an accurate summary of “The Cold Equations” that details the important events of the story. Provide your answer in three to five sentences. Can someone help me with this please?
asked by zack 
Math
Shelly compared the number of oak trees to the number of maple trees as part of a study about hardwood trees in a woodlot. She counted 9 maple trees to every 5 oak trees. Later in the year there was a bug problem and many trees died. New trees were planted
asked by Katherine 
business math
The flour power bakery makes 200 cherry cheese cakes at a cost of 2.45 each. If a spoilage rate of 5% is anticipated at what price should the cakes be sold to achieve a 40% markup based on cost?
asked by Jessica 
science
Why do scientists use models? a. Scientists use models to learn about things that are too small, too large, or too complex to observe directly. b. Scientists use models because doing so is always part of the scientific method. c. Scientists use models
asked by Anonymous 
physics
In 1939 or 1940, Emanuel Zacchini took his humancannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net (see the figure). Assume that he is launched with a speed of 28 m/s and at an angle of 56°.
asked by kristy 
chemistry
How many grams of Cl are in 525 g of CaCl2?
asked by college chem 
chemistry
A graduated cylinder contains 155mL mL of water. A 17.0g g piece of iron (density = 7.86g/cm 3 g/cm^3 ) and a 23.0g g piece of lead are added. What is the new water level in the cylinder?
asked by uta 
physics
A circus performer begins his act by walking out along a nearly horizontal high wire. He slips and falls to the safety net, 25.0 ft below. The magnitude of his displacement vector from beginning of the walk to the net is 26.7 ft. How far out along the high
asked by paul 
General Chemistry
The enthalpy of vaporization of benzene liquid is 33.9 kJ/mol at 298 K. How many liters of benzene gas, measured at 298 K and 95.1 mmHg, are formed when 1.54 kJ of heat is absorbed by benzene liquid at a constant temperature of 298 K? I think we use the
asked by <3 
Mechanics
Two bodies of masses 8 kg and 4 kg move along the xaxis in opposite directions with velocities of 11 m/spositive xdirection and 7 m/snegative xdirection, respectively. They collide and stick together. Find their center of mass. Show the solution and
asked by Aries 
physics
Suppose that a shot putter can put a shot at the worldclass speed v0 = 14.00 m/s and at a height of 2.160 m. What horizontal distance would the shot travel if the launch angle θ0 is (a) 45.00° and (b) 42.00°? The answers indicate that the angle of 45°,
asked by kristy 
Physics
A rock is dropped from a tree of height 20 m into a lake (depth 4.6 m) below. After entering the water, the rock floats gently down through the water at a constant speed of 1.6 m/s to the bottom of the lake. What is the total elapsed time?
asked by Chapa 
Math help Ms. Sue please
1. What is the simplified form of the expression? 7m^2 + 6.5n  4n + 2.5m^2  n 9.5m^2 + 1.5n 4.5m^2 + 1.5n 1.5m^2  4.2n 9.5m^2  1.5n 2. What is the sum? 9/4 + (1/5) 41/20 41/20 1/3 8/20 3. Order the following numbers from least to greatest. √7,
asked by Charlotte 
math
Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25?
asked by Shohanur 
Physics
A person desires to reach a point that is 2.80 km from her present location and in a direction that is 35.0° north of east. However, she must travel along streets that are oriented either northsouth or eastwest. What is the minimum distance she could
asked by Mya 
Math, Trigonometry
The height of a person on a ferris wheel is measured by function h(t)=38 sin 3.5 (t4.0)+41.? h= height of person in feet t=represents the time in minutes. a) At what height, to the nearest tenth, are passengers loaded onto the Ferris wheel ? what
asked by sam 
English writing a concluding paragraph
My essay is about conformity and rebellion. I need a really good conclusion. My intro is this: In life there will be certain situations in which we will have to stay in order or choose to make our decisions ourselves. For example there will be times when
asked by Jenna 
math
there are 6 times as many dogs as cats. if the total of number dogs and cats is 21, how many dogs are there?
asked by Vargas 
math 4th grade
Not sure what to do here? Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
asked by nathan 
World History
in what ways are the ideas of the buddhist eightfold path similar to and different from the ideas, beliefs, and practices, of other religions or philosophies you may know about?
asked by unknown 
algebra
write the expression that represents the total length of each segment. .__x____.____9_____.
asked by Josh 
Social Studies
People engage in trade mostly in order to _______ a. have access to a variety of goods (?) b. encourage specialization in the economy c. raise labor productivity at businesses d. set prices for goods and services most efficiently Which of these is a result
asked by Anonymous 
math
In the ways of developing the ways of calculating time, astronomers divided an hour into 60 minutes. Why is 60 a better choice 59 or 61?
asked by Shohanur 
math
The sequence x_1, x_2, x_3, . . ., has the property that x_n = x_{n  1} + x_{n  2} for all n>=3. If x_{11}  x_1 = 99, then determine x_6.
asked by Speedo 
Math check my answers
Please check my answers on the following questions Simplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^1/6 = 1/0.5n^2 (9n^4)^1/2. = 3n^2 36^3/2 = my answer is 2 in the index of the aware root of 36^3 343^4/3 I don't know this one Thanks
asked by Lea 
Algebra
The lengths in feet of three ropes are consecutive multiples of three. If each rope were four feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
asked by Anonymous 
Geography (Ms. Sue)
How are the Llanos, cerrado, and pampas of South America similar to the Great Plains of the United States? My answer: These areas of land are similar to the Great Plains as they are flat plains as well as grasslands.
asked by Anonymous 
social studies
What are the unique physical characteristics of the Atlantic Coastal plain Region?
asked by ezekiel 
Help Plz.. Algebra II
Allegra has a cellphone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed $73.40. a. Define a variable for the unknown. b. Write an equation to model the problem.
asked by Jullian 
Calculus (math)
Using your knowledge of trigonometric identities, ﬁnd the exact value of sin(x+y) knowing that x and y are between 0 and π2, that sin(x)=725 and that sec(y)=1312. Your answer must be a rational number, written in the form of an irreducible fraction p/q
asked by Kam 
Statistics (Please help!!!)
The investigators suspect that military men may not tell the truth about visiting a CSW. Some may say they did visit a CSW when they actually did not; others will say they did not visit a CSW when they actually did. Is this: A. Nondifferential
asked by Joy 
Physics
You are attempting to row across a stream in your rowboat. Your paddling speed relative to still water is 3.0 m/s (i.e., if you were to paddle in water without a current, you would move with a speed of 3.0 m/s ). You head off by rowing directly north,
asked by Amy 
Statistics Multiple Choice Question
The investigators suspect that military men may not tell the truth about visiting a CSW. Some may say they did visit a CSW when they actually did not; others will say they did not visit a CSW when they actually did. Is this: A. Nondifferential
asked by Joy 
Physics
A car is traveling at 24.4 m/s. If the driver has a reaction time of 1 second, what will be his stopping distance if his car slows down at 8 m/s2?
asked by Joseph 
Physics
while at the shooting range, jonathan shoots a bullet traveling horizontally with speed of 35 m/s. the bullet hits a board, perpendicular to the surface, passes through it and emerges on the other side with speed of 21 m/s. if the board is 4.00cm thick,
asked by lian 
Geography (Ms. Sue)
Is a rain forest a landform?
asked by Anonymous 
Polynomials
Im so tired of being frustrated can someone help get the sum diff and product of this problem 3^x ∶ x^23^x+ 2
asked by tela 
English
Decide which of the two reasons offered in each instance will be more persuasive to the specified audience.Write out the implied warrant for each "because" clause and explain whether the specific audience will likely grant it or not. 1)Audience:people who
asked by lyndsay 
Math
if Y= a+bX with a= 12 and b= .4 what is the value of Y when: Show your work a)x= 0 y= b)x= 5 y= c)x= 10 y= d)x= 20 y=
asked by ios7 
Math
How do you do. Please Explain Sum of X Sum of Squares Sum of X squared
asked by ios7 
Chemistry
Calculates the work done (in joules) when 42.8 g of tin dissolves in excess acid at 1.10 atm and 23 degrees Celcius. Assume ideal gas behaviour.
asked by Vanessa 
Chemistry
Calculates the work done (in joules) when 42.8 g of tin dissolves in excess acid at 1.10 atm and 23 degrees Celcius. Assume ideal gas behaviour.
asked by Vanessa 
Math
The least squares regression line is a unique line for each data set. True The least squares regression line minimizes the sum of the residuals. False
asked by Student 
Geography (Ms. Sue)
1). Where are most of the highland climate zones located? 2). What vegetation characterizes the Amazon River basin? 3). What types of climate zones are found in Latin America? My answers to these questions are the following: 1). Most of the highland
asked by Anonymous 
Fluid Mechanics
Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the
asked by Katy 
Polynomials check my answer please
I need help bad i been doing this homework since i got home at 4:00 and am stuck on this problem. X 1 : X2 =sum (x+1)+(x2)=(x+x+12) diff (x+1)(x2)=(xx12) Product (x1)(x2)=(x^21)
asked by johnnie 
Math
Alaska has 18 national parks. If you add zero to that number, you get the number of national parks in Virginia. How many national parks are in Virginia? How do you know?
asked by Sue 
Polynomials check my answer
My brother said I did this wrong can someone check this for me please X Y1 = sum(x)+ (y1)=(X+y1) diff(x)(y1)=(x+y+1) Product (x) (x1) = (xy1) = (xy1)
asked by tela 
physics
A fire hose ejects a stream of water at an angle of 35.0º above the horizontal. The water leaves the nozzle with a speed of 25.0 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the
asked by paul 
science
how do the words matter element atom crystal compound and molacule relate
asked by mimi 
French
Hi beautiful people. I'm busy working on a French assignment due tonight and I'm struggling to figure out a couple of professions. I have to decide which person to hire which is hard because I'm not understanding what jobs they have done before. If anyone
asked by Rissa 
tech
in the movie revolution What story telling format is used to help tell this story? what does that mean like chronological, etc
asked by anonymous 
physics
If you can throw a ball vertically upward to a height h = 19.7 m, what is the maximum horizontal range over which you can throw the same ball, assuming you throw it at the same initial speed?
asked by Michael 
physics
Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crashresistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must
asked by paul 
math
Jorge needs 1.5 hours to complete his paper route. if Jorge's average velocity is 6km/h, how long is his paper route
asked by Anonymous 
physics
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0 m/s. The car is a distance d away. The bear is 26 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum
asked by paul 
Math
2000 mg = ______ g
asked by Zhanise 
Math
2000 mg = ______ g
asked by Zhanise 
math
write a numerical expression to represent the phrase Half a number increased by 34
asked by Haley 
quantitative chemistry
How do you write an expression for the mass of the residue in terms of x and y?
asked by Lost 
math
a rectangular swimming pool 20 feet long and 10 feet wide,is enclosed by a wooden deck that is 3 feet wide. What is the area of the deck? How much fence is required to enclose the deck?
asked by Dee 
physics
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0º above the horizontal. The rocket is fired toward an 15.0 m high wall, which is located 27.0 m away. The rocket attains its launch speed in a negligibly short period of time,
asked by paul 
quantitative chemistry
How do you write an expression for the mass of the residue in terms of x and y?
asked by Lost 
precalc
Old McDonald has 1000 feet of fencing, and wants to build a pen along the side of his barn that will have two separate areas one for his pigs, and one for his cows. if only one of the fences is to run parallel to the barn, find the dimensions of the pen
asked by adina 
Math
A builder wants to construct a cubeshaped diving pool with a water volume of 1800 cubic feet. . Approximate the edge length of the pool to the nearest foot
asked by Alicia 
math
a rectangular swimming pool 20 feet long and 10 feet wide,is enclosed by a wooden deck that is 3 feet wide. What is the area of the deck? How much fence is required to enclose the deck?
asked by Dee 
Math
104 Km = ______ m
asked by Zhanise 
Fluid Mechanics
Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the
asked by Katy 
Math
5.6 Cm = ______ m
asked by Zhanise 
physics
a ufo is trying to escape by flying at the constant velocity of 70m/s at an upward angle of 2 degrees. it passes directly over you at a height of 40 m. at the instant it is directly above you you attempt to shoot it down by launching a projectile. what is
asked by mary 
Math
What property of real numbers is represented by 9(2x)?
asked by Anonymous 
Math
198 g = _____ Kg
asked by Zhanise 
algebra 2
x + my =d
asked by Jo 
Math
63 cm ____ 6 m/ >,
asked by Zhanise 
UIW
Neptunium239 has a halflife of 2.35 days. How many days must elapse for a sample of 239Np to decay to 0.100% of its original quantity
asked by Anonymous 
math
(tr)^2(tr)^2(tr)^2
asked by ann 
geometry
Given: FG (SEG) bisects BT (SEG) BO=7x6 OT=5x+10 Prove: BO=50
asked by luis 
Algebra
The length in feet of three ropes are consecutive multiples of three. If each rope were 4 feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
asked by Anonymous 
geometry
Given: FG (SEG) bisects BT (SEG) BO=7x6 OT=5x+10 Prove: BO=50
asked by luis 
statisitcs
the mean and median income for people who are 25 years old is $46931 and $58762. Which one is the mean and which one is the median? how can i tell just by the given numbers?
asked by Anonymous 
arithmetic
28,000 X .05% compounded for 33 years =
asked by tom 
history
compare the purpose, audience, and styles of John Winthrop and Johnathan Edwards.
asked by ray 
math
x/y^2 = x/(1/y) is that a true statement?
asked by d 
physics
A labour is throwing 12 bricks per min from the ground and these just reach the roof which is 3.3 meters high. ifthe weight of each bricks be 3.75 kg then find the horse power with which the labour is working.
asked by sarsi 
Algebra
The lengths in feet of three ropes are consecutive multiples of three. If each rope were four feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
asked by Anonymous 
Last questions Ms. Sue please for math
1. To which subset(s) does the number √42 belong? Rational numbers Irrational numbers Whole numbers, integers, rational numbers While numbers, natural numbers, integers 2. Evaluate the following expression for the values given. P/s + r^2q ( p = 60, q =
asked by Charlotte 
ENG
WHICH IS CORRECT HE AGAIN VISITED INDIA ON AUGUST 1980 OR HE AGAIN VISITED INDIA IN AUGUST 1980
asked by help(in much need) 
Math
(5) to the 2nd power
asked by Nate 
Chemistry
What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules. x=
asked by Urgent help 
business math
Whawas the orginal selling price of a trendmill curently on sale for 2,484 after a 25% markdown?
asked by Jessica 
Math
The are of a square is 7x7 square inches. Write this using an exponent.
asked by Anonymous 
business math
Epicure market prpares fresh gourmet entrees each day. On wednesday, 80 baked chicken dinner were made at a cost of 3.50 each
asked by Jessica 
Socials Studies
What is Matrilineal and how is it related to american history?
asked by Anonymous 
business math
Carousel Toys has ramper buckaroo wooden rocking horse for toodlers on a 30% markdown sale for 72.09 each what was the original price before they were markdown?
asked by Jessica 
Math
5/32+1/4=
asked by Squad 
business math
You are the buyer for the shoe outlet. You are looking for a livie of mes shoes to retail for $49.95 if your objective is a 55% markup based on selling price, what is th most that you can pay for the shoes and still get the desired markup?
asked by Jessica 
Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b.
asked by Anonymous 
math
if a=4 and b=8, calculate the following (show your answer as a fraction (lowest) or in decimal form). Show your work (A+B)²  A (A+B)²  B
asked by ios7 
Physics
The current in a series circuit is 11.0 A. When an additional 11.0Ω resistor is inserted in series, the current drops to 6.6 A. What is the resistance in the original circuit?
asked by Anonymous 
math
calculate the following, leaving your answer as a fraction (lowest) or in decimal. Show your work 4(2+1)²  3(1)²
asked by ios7 
science
a large amount of potassium in plant food could cause the formation of MgKPO4:6H2O along with MAPH. what would be the effect on the calculated percentage of P2O5 in question 1 if MAPH were mixed in with your precipitate? would the %P2O5 in this mixture be
asked by dave 
math
calculate the following, leaving your answer as a fraction (lowest) or in decimal. Show your work 8(2+3)²  2(5)²
asked by ios7 
SS
A company in China manufactures basketballs. A company in the United States buys the basketballs and resells them to people there. What term best describes the U.S. company? a. importer (?) b. exporter c. producer d. consumer Equilibrium prices are
asked by Anonymous 
Chemistry
a large amount of potassium in plant food could cause the formation of MgKPO4:6H2O along with MAPH. what would be the effect on the calculated percentage of P2O5 in question 1 if MAPH were mixed in with your precipitate? would the %P2O5 in this mixture be
asked by dave 
Introduction to Occupational Thearpy
1. What type of facility treats most of conditions and may offer outpatient occupational therapy services? A. federal institutions B. rehabilitation hospitals C. acute care hospital D. work hardening centers (My Answer is B) 2. Which of the following
asked by Shamie 
Social studies
Exchange rates are determined by _____________. a. the presence or absence of trade barriers. b. banks, labor unions, and nonprofit organizations. c. the relative scarcity of a good or service. d. market prices of one country's currency in another
asked by Anonymous 
Socials Studies
What is Matrilineal and how is it related to american history?
asked by Anonymous 
Math
Explain why it is important to line up decimal numbers by their place value when you add or subtract them.
asked by Anonymous 
math
Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25?
asked by Shohanur 
Socials Studies
What is Matrilineal and how is it related to american history?
asked by Anonymous 
science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b.
asked by Anonymous 
Physics
I had an experiment on Ohm's law using simple circuit however the result of current flow in the experiment and in theory are very different. Can you please explain why this happen? Thankkyouuu in advancee :)
asked by Anonymous 
math
what number am i: clue 1 when you divide me by 5, the remainder is 4. clue2 I have 2 digits. Both digits are odd. Clue 3 the sum of my digits are 10.
asked by Shohanur 
Math (HELP PLEASE)
Explain why it is important to line up decimal numbers by their place value when you add or subtract them.
asked by Anonymous 
math
Jack looks at a clock tower from a distance and determines that the angle of elevation of the top of the tower is 40°. John, who is standing 20 meters from Jack as shown in the diagram, determines that the angle of elevation to the top of the tower is
asked by Anonymous 
Criminal Justice
The Supreme Court has ruled that prosecutors cannot be subject to civil suits against them: A even in cases of egregious rulebreaking B unless the case is later overturned C because trial judges are always on the prosecutors side D because it is important
asked by Debra 
Chemistry
What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules. x=
asked by Urgent help 
math
In the ways of developing the ways of calculating time, astronomers divided an hour into 60 minutes. Why is 60 a better choice 59 or 61?
asked by Shohanur 
english
How humans impact the coast?
asked by Kina 
math
what number am i: clue 1 when you divide me by 5, the remainder is 4. clue2 I have 2 digits. Both digits are odd. Clue 3 the sum of my digits are 10.
asked by Shohanur 
math
if a plane is traveling at an altitude of 11.9 miles and is 46 miles from the airport and is descending at a 12 degree angle, what is the mph to the airport?
asked by Greg 
ms.sue please help
what is a story telling format
asked by anonymous 
math
Suppose that ab = 7 and a^2b + ab^2 + a+b = 80. What is a^2+b^2?
asked by Speedo 
business law
Eagle Sales Company owns a warehouse, subject to a mortgage obtained from First National Bank. Separately, Eagle and First National obtain insurance policies from Good Hands Insurance Inc., to cover the warehouse. Later, Eagle sells the property to
asked by Missy 
calculus
if y=cosx.sinx find dy/dx
asked by calculus 
Check answers science
Patient motion may create artifact that looks like an atrial arrhythmia? True or False. True The ECG tracing represents a 3 dimensional view of the heart's electric activity? True or False. True
asked by Mary 
EKG
This is a true and false question: 1. Patient motion my create artifact that looks like an atriall arhythmia. 2. The ECG tracing represents a 3 dimensional view of the heart's electric activity.
asked by ashley 
Geography
What are the regions of Latin America?
asked by Anonymous 
math
In the ways of developing the ways of calculating time, astronomers divided an hour into 60 minutes. Why is 60 a better choice 59 or 61?
asked by Shohanur 
math
suppose an auto racer won a 300 mile race with a time of 1:41:48.2942. At one point the racer was 70 miles closer to the finish than the start. how far had the racer gone at that point? How far from the start was the racer?_miles
asked by wendy 
science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b.
asked by Anonymous 
Chemistry
How many grams of sodium sulphate (mol. wt. 142) are required to make 1.2 liters of 0.5N solution
asked by Frank 
Chemistry
Technetium99m is an ideal radioisotope for scanning organs because it has a halflife of 6.0 hr and is a pure gamma emitter. Suppose that 200mg were prepared in the technetium generator this morning. How many milligrams would remain after the following
asked by Nadia 
Math
(( cube square root of 7)^1/2)^3
asked by Monica 
social studies
what is the name given to a curved of hooked area of land that extends into a sea of ocean
asked by jenny 
Physical Science
Judy (mass 45.0 kg), standing on slippery ice, catches her leaping dog, Atti (mass 12kg), moving horizontally at 4.0 m/s. Use the conservation of momentum to find the speed of Judy and her dog after the catch.
asked by Shannon 
English
I really need to get a working charger for my phone. Is working a verb or participle?
asked by Steve 
english
from the book there are no children here what does " William died a few months later when a friend, fooling around with a revolver he thought was unloaded, shot William in the back of the head. Lafeyette never learned what happened to the snake." this
asked by jack 
physics
A crate of potatoes of mass 12.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.69 and μk = 0.43. Find the frictional force (magnitude and direction) on the crate if the crate is sliding down the
asked by nadine 
chemistry
calculate the percentage copper in copper 2 nitrate
asked by Anonymous 
Physics
A Nordic jumper goes off a ski jump at an angle of 10.0° below the horizontal, traveling 109.0 m horizontally and 44.0 m vertically before landing. (a) Ignoring friction and aerodynamic effects, calculate the speed needed by the skier on leaving the ramp.
asked by Kelsey 
english
what does "His face masked his troubles. It was a face without effect, without emotion." mean?
asked by lesley 
english
what does "There are a lot of people in the projects who say they're not going to do drugs, that they're not going to drop out, that they won't be on the streets. But they're doing it now. Never say never" mean?
asked by ash 
algebra
5x + 0.050= 0.732
asked by jodi 
physics
A baseball leaves a pitcher's hand horizontally at a speed of 115 km/h. The distance to the batter is 18.3 m. (Ignore the effect of air resistance.) (a) How long does the ball take to travel the first half of that distance? (b) The second half? (c) How far
asked by kristy 
world history
1)What items did Harappans trade with peoples in the Sumerian region? 2)What is the probable cause of the end of Indus Valley culture? I NEED DIRECT ANSWERS PLEASE!
asked by Anonymous 
Polynomials
Can someone show me step by step how to get the sum diff and product of this problem x^3 〖2x〗^2 + 3x1 ∶ x^2 x+4
asked by tela 
math
there are 48 calories in a candy bar.how many dozen calories are there in 46 candy bars?
asked by ezekiel 
Algebra II
Solve the equation and write the solution set. 4x – 8 – 3x = 6x + 2 I need help!!
asked by Mary 
math
In the ways of developing the ways of calculating time, astronomers divided an hour into 60 minutes. Why is 60 a better choice 59 or 61?
asked by Shohanur 
spanish
i am writing things I do on that ship. choose the correct verb based on its meaning to complete each sentence. a. toco b. nado c. almuerzo d. juego e. escucho f. miro g. abro h. hablo i. voy j. como 15._____la musica 16.______ en el comedor 17._____ la
asked by anonoymus wizard 
To MS SUE
Can u please check my math answers
asked by Lea 
Polynomials
Can someone please help me get the sum difference and product of this problem I am so lost x^3+ 2x5∶ x^4x^3+ 3x^2 2x+3
asked by albert 
accounting
A recent cash budget showed estimated cash receipts of $159,000, estimated cash disbursements of $155,000, and a desired ending cash balance of $6,000, with no borrowing of funds. The beginning cash balance was:
asked by Leah 
Math
Post a New Question Current Questions Homework Help: Math (HELP PLEASE) Posted by Anonymous on Tuesday, September 17, 2013 at 8:37pm. Estimate the total precipitation in inches and in days for Asheville and Wichita. City: Inches: Days:
asked by I need help on this to 
Chemistry
How many atoms are 3.75 moles of iron (Fe)?
asked by anony5 
To ms sue
Can you please help me with my English , much appreciated
asked by Jenna 
Please check my answers
Patient motion may create artifact that looks like an atrial arrhythmia? True or False. True The ECG tracing represents a 3 dimensional view of the heart's electric activity? True or False. True
asked by Mary 
solve algebra equation
32.1=a21.8
asked by jade 
English
What are the common nouns in these sentences? I think I have them right but I'm not sure. 1 is zone. 2 is steamboat. 3 is sister 4 is cross, and crossings. 5 is brother and animals. 6 is beavers and people 7 is voyage and world. It would be greatly
asked by Krystal 
Please help Chem
A hydrate of barium chloride has the formula BaCl subscript 2 dot XH subscript 2 O.If a 1.055g sample of the hydrate contains 0.157g H2O, what is the "X" in the formula?
asked by anony5 
pre calc
An open box is formedby cutting squares out of a peice of cardboard that is 18 feet by 26 feet and folding up the flaps. What size corner squares should be cut to yield a box that has a volume of 250 cubic feet
asked by bethany 
pre calc
Carson wants to invest $100,000 in two ways. He wants to purchase a certificate of deposit that pays 11% per year and invest the rest in coorporate bonds that pay 15% per year. He is looking for a total return of 12%. How much money should Carson place
asked by bethany 
Algebra
Could you please tell me how to graph the inequality on a plane. 4x3
asked by Pam 
Math
Allegra has a cellphone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed $73.40. a. Define a variable for the unknown. b. Write an equation to model the problem.
asked by Jullian 
mathematics
the base of an isosceles triangle is 27dm.if the length of a leg is 11 more than onethird of the base,find the perimeter of the triangle?
asked by annalou paradillo 
Reading
Analyze how Mrs. Watson tries to put a positive spin on the life in the south
asked by Anonymous 
chemistry
190 grams of potassium iodide is placed in 100 cm3 at 60 degrees Celsius. the solution is cooled to 30 degrees Celsius. how many grams will settle out?
asked by Cara 
English
I need some help on figuring out the main idea of "The Adventures of Huckleberry Finn." I know that for most of the part, Huck and Jim float on a raft down the Mississippi River and on the way, they encounter many people and obstacles. At the end of the
asked by Anonymous 
quantitative chemistry
How do you write an expression for the mass of the residue in terms of x and y?
asked by Lost 
Geography (Ms. Sue)
1.) What types of landforms are found in Latin America? 2). What is their relative location? My answer: 1.) Latin America's landforms include highlands, lowlands, mountains, and plains. 2). ?
asked by Anonymous 
english
While shopping for garden gnome Myrtle noticed some new ceramic herb pot but she though they were considerably more expensive than the sturdy green plastic ones.
asked by lisa 
Chemistry
Technetium99m is an ideal radioisotope for scanning organs because it has a halflife of 6.0 hr and is a pure gamma emitter. Suppose that 200mg were prepared in the technetium generator this morning. How many milligrams would remain after the following
asked by Nadia 
Math
What are 3 strategies for finding multiples of a number?
asked by Anonymous 
physics
A model rocket is launched straight upward with an initial speed of 51.3 m/s. It accelerates with a constant upward acceleration of 1.82 m/s2 until its engines stop at an altitude of 150 m. What is the maximum height reached by the rocket?
asked by Jasmine 
Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b.
asked by Anonymous 
math
(130)p=102
asked by Sue 
Physics
A pendulum has a mass of 3.2 kg, a length of 2 meters and swings through a (half)arc of 28.1 degrees. What is its amplitude to the nearest centimeter?
asked by Jay 
Math
ben deposits $320 in an account that earns 3.5% simple interest per year. what is the balance in the account year?
asked by Katie 
$$$$math$$$$'
I want to make 99 by using calculator,but the 9 key , the + key,and the  key are broken. How can I use my to do the task. I need to come up with 5 solutions I came up with this 33x3=99 99x1=99. 11 x3x3=99 I need two more solution and my mom is lost too.
asked by Jerica 
algebra
Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
asked by nathan 
MATH
Chantal has a flower bed. She has three types of flowers, Daffodils, Hyacinths and Tulips. She has 8 Daffodil bulbs, 10 Hyacinths bulbs and 12 Tulip bulbs. For every 3 bulbs that were planted, how many hyacinth bulbs were planted? Was it 1,2,3, or 5?
asked by TERRY 
Math
an algebra book weighs 6 oz less than twice as much as grammar book. if 5 algebra books weigh the same as 8 grammar books, how much does an algebra book weigh?
asked by Zoey 
Math
In 1990, the population of Cheyenne, Wyoming, was 73,142. By 2000, the population had increased to 81,607. Write and solve an equation to find, the increase in Cheyenne’s population from 1990 to 2000. Mercury’s surface temperature has a range of 600
asked by Crystal