Questions Asked on
September 25, 2014

chemistry
Calculate how many grams of the first reactant are necessary to completely react with 55.8g of the second reactant. Na2CO3 + CuCl2 → CuCO3 + 2 NaCl
asked by Cristin 
Physics
Two light bulbs of resistance R1 and R2 (>R1) are connected in a series. Which is brighter? What if they are connected in parallel?
asked by Prakash Padukone 
Math (Quadractic function)
Hi can you help me find the solution for this one? I have the answers at the end but I want to study how did it end with that. Thanks :) The number N of bacteria in a refrigerated food is given by N(T) = 10T^2  20T + 600, 1 ≤ T ≤ 20 where T is the
asked by CLINT 
English
6. Which of the following sentences contains an abstract noun? A. They did a good job planning the party. B. Respect must be earned. C. She thought we should have left earlier. D. I hope that we are not late.
asked by Sarah 
Maths
The 90 members of a sports club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19 play football and volley ball,and 29 play tennis and volley ball. n people play all three games. 2n people each play only one
asked by Suleiman 
Calculus
A man standing 9 feet from the base of a lamppost casts a shadow 6 feet long. If the man is 6 feet tall and walks away from the lamppost at a speed of 30 feet per minute, at what rate, in feet per minute, will his shadow lengthen?
asked by Mike Nguyen 
Science! Help!!
What would happen if gametes were not haploid? A. If gametes were not haploid, the offspring would have half the number of chromosomes it is supposed to have. B. If gametes were not haploid, the offspring would have double the number of chromosomes it is
asked by Gwen 
Physics
A stone is tied to a string (length = 0.700 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the
asked by Anon 
Chemistry
Deduce the number of nitrogen atoms in: 5.00 x 10^3 mol of ammonia, NH3 and 4.601 g of nitrogen dioxide, NO2
asked by Syndra 
Trigonometry
The wheels of a scooter have a diameter of 4.5 inches. If the person riding the scooter is traveling down hill at 15.0 mph. what is the approximate angular speed of the wheels in radians per second
asked by Bob 
math
A boy of height 95 cm is walking away from base of a lamp post at a speed of 1.5 m/s.If the lamp post is 3.8 m above the ground, find the length of his shadow after 5 seconds.
asked by sherry 
business
Suppose that Paulie and Vinny each can produce ice cream or tshirts. it shows the quantity of each good that Paulie and Vinny each can produce in one hour, respectively, if they devote all of their time and effort into making the good. paulie can make 3
asked by arthur 
science
which of the following is an example of an effect of natural selection. A. all of the children of two parents are male. B. carbon cycles through ecosystem. C. favorable environmental conditions cause an increased food supply. D. polar bears have white fur.
asked by Rima 
G.G.Hr.sec.school
a person starts writing all 4 digit numbers .how many times had he written the digit 2
asked by devi 
physics
What is the pressure exerted on the ground by a cube which has a weight of 600N and a side of 1m2
asked by Wesley 
Engineering Dynamics
A ball is thrown so that the motion is defined by the equations x=5t and y=2+6t4.9t^2, where x and y are expressed in meters and t is expressed in seconds. a) find velocity at t=1s, b) find the horizontal distance the ball travels before hitting the
asked by James 
algebra
a motorboat left a harbor and traveled to an island at an average rate of 12 knots, the average speed on the return trip was 10 knots. If the total trip took 8.8 hours, how far is the harbor from the island?
asked by Barbara 
World History (Please, help me!)
What did Rousseau mean when he stated that if any individual wants to pursue his own selfinterest at the expense of the common good, "He will be forced to be free"?
asked by Victoria 
MATH
1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE 16 ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,4,7,0,3,3 B. 3,7,0,3,7,4 C. 7,3,0,3,4,7 D. 7,4,3,0,3,7 3. WHICH SYMBOL WILL MAKE 6 ? 6
asked by HELP ME 911 
Algebra 2
Am I correct? The radius of a cylinder is 3x – 2 cm. The height of the cylinder is x + 3 cm. What is the surface area of the cylinder? Use the formula A = 2pi r2 + 2 pi rh. 2spi (3x2 + 10x – 8) 2 pi (12x2 + 7x2) 2 pi (12x2 2x +13) my answer 2 pi
asked by Sandra 
English
Learning About Short Stories Identify the letter of the choice that best answers the question. Which of the following most accurately identifies the usual length of a short story? A. 100 to 200 words B. 200 to 1,000 words C. 500 to 10,000 words D. 50,000
asked by Asther 
math
Farmer john has hens, geese, ducks, and two goats the number of hens equals the number if geese and ducks combined . There are 5 fewer geese than ducks. If the total number of animals is 40 how many are ducks
asked by angel 
Physics
A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to oneninth of its
asked by Anon 
Algebra 1
A teacher knows that 80% of her students will score no more than 5 points above or below the class average, 85%, on the test. Which inequality represents the test scores of 80% of her students? a. 75
asked by Jack 
Algebra 1
In order to earn an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A? Show your work.
asked by Jack 
algebra
The cost, c(x) in dollars in per hour of running a certain fishing boat is modeled by the function c(x)= 0.9x^2  18.1x + 135.1, where x is the speed in km/hour/ At what approximate speed should the boat travel to achieve minimum cost?
asked by Sarah 
Algebra 1
A student reads an average of 34 pages per day. The number of pages she reads per day varies from the average by up to 8 pages. a. Write an absolute value inequality that represents the range of the number of pages she reads per day. b. Solve your
asked by Jack 
math
two students are playing a math game . the object of the game is to make the least possible number by arranging the given digits inside absolute value bars on a card . in the first round , each player will use the digits 3,5,and7 to fill in the card. One
asked by elena 
Maths
solution if x=cosec A + cos A and y=cosec Acos A then prove that (2/x+y)sqare+(xy/2)sqare1=0
asked by Love 
Maths
The 90 members of a sport club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19 play football and volley ball,and 29 play tennis and volleyball. n people play all three games. 2n people each play only one game.
asked by Suleiman 
CHECK MY ANSWERS PLEASEEE
Please and thank you :D 1.A 2.B 3.B 4.B 5.B 6.C 7.C 8.B and C 9.D 10.B 1.Who is most likely to study written records? A.historians B.archaeologists C.geologists 2.Which is a primary way an archaeologist would decide where a temple stood? A.evaluating clues
asked by Matt 
Mathplease check
The supershots scored over 75 points in each of ten straight games. The newspaper predicts that they will score more than 75 points tonight. Which form of reasoning is this conclusion based on? A. Deductive reasoning, because the conclusion is based on
asked by Anonymous 
history
In the 1800s, the US established forts west of the Mississippi River from Louisiana to Minnesota to establish peace among warring American Indian tribes and to __________. A. provide American Indians with funds and goods for their survival B. strengthen
asked by katt<3bobby 
chemistry
If someone has the time to help with the following question it would be really helpful. The problem is 209/83bi+64/28NI=272/111Rg+1/0n How to calculate the energy change in J/mol reactants? AMU amounts: Bi=208.980384 Ni= 63.927969 Rg=272.1535 What I have
asked by Nancy 
Math
Scores on a marketing exam are known to be normally distribute with mean and standard deviation of 60 and 20, respectively. The syllabus suggests that the top 15% of the students will get an A in the course. What is the minimum score required to get an A?
asked by Sam 
government
what inspired the Constitutional Convention in 1787
asked by anonymous 
HISTORY
1. WHICH OF THE FOLLOWING DESCRIBES AN ACCOMPLISHMENT OF GEORGIA'S ROYAL GOVERNORS A. improved defense of the colony B. Increased land for settlement C. Organized the colony into parishes D. ALL OF THE ABOVE ** 2. WHICH OF THE FOLLOWING ISSUES IS NOT
asked by HELP ME 911 MS. SUE 
Science! URGENT
How might sexual reproduction decrease an organisms chance of survival? A. If the offspring inherits a genetic combination that includes a harmful trait, it could decrease the organisms chance of survival. B. If the offspring inherits the exact sane
asked by Gwen 
marketres
which is not par of the ethical decision making framework
asked by alvist 
Chemistry
Use solubility rules to write the balanced molecular, complete ionic, and net ionic equations for the aqueous reaction between BaI2 and Hg(NO3)2. Include phase subscripts on all substances. I got to the part where you switch the elements Ba(NO3)2 +HgI2 I
asked by Feather 
calculus 1
a ladder 20 ft. long rests against a vertical wall.If the bottom of a ladder slides away from the wall at a rate of 4 ft./sec, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 12 ft. from the wall? x^2 +y^2 = 20^2
asked by hasel 
Calculus
It is known that the quantity demanded of a certain make of portable hair dryer is x hundred units/week and the corresponding wholesale price is shown below where p is in dollars. p = sqrt(225  5x) The supplier will make x hundred units of hair dryers
asked by Andre 
math
word problemIf car A is going 50mph and is 15miles ahead of car B who is going 60mph, how long will it take car B to catch up with other? 50x+15=60 15=15 50x=45 x=10 
asked by toi 
Physics
Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.40 m/s, while the speed of the current is 2.2 m/s. If it takes the swimmer 200 s to cross the river, how wide is the river
asked by Judy 
History
Who are Abraham, Moses, and Noah to Christians, in a single word?
asked by Anonymous 
Physics
Speedboat A negotiates a curve whose radius is 100 m. Speedboat B negotiates a curve whose radius is 221 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?
asked by Steve 
math
1. 3w  10w A, 13w B. 7w** C. 7 D. 7w 2. y + 2y + 3z A. 2y + 3z B. 3y + 3z C. 2y^2+3z D 6yz 3. 6r + r  5r A. 2r B.1r + r C. 0r D. 7r  5r 4. 5x + 2(x + 6) A. 7x + 6 B. 7x^2 + 12 C. 7x + 12 D. 7x (x + 6) 5. 3m + 3(m +6) A. 6 B.6m + 6 C. 6m + 18 D. 18
asked by HELP MEEEEE 
statistics
A nutritionist was interested in determining the smoking status of her clients. She asked each of her clients to report his or her current smoking status: Smoker, ExSmoker, and NonSmoker. Which of the following graphical techniques is the best way for
asked by shelly 
Math conversion
21.0cm^3=___in^3
asked by Elle 
chemistry
The radius of a niobium atom is 131 pm. How many niobium atoms would have to be laid side by side to span a distance of 4.53 mm? atoms
asked by estefania 
chemistry
caculate the number of moles of magnesium ions in 5.5g magnesium phosphate
asked by newsome 
Chemistry
Given: CH4 + 2O2 ~ CO2 + 2H2O C  H = 99 kcal O  O = 119 kcal C = O = 192 kcal O  H = 111 kcal Calculate the change in energy for the CH4  O2 system.
asked by Rainey 
Chemistry
The name given to the geometric arrangement of the reacting species at the time of reactions is called ?
asked by Anonymous 
English
Though it is a history essay, my question has to do with writing and essay. The following is what I submitted for an essay and was told it was good but it lacked an introduction and thesis. My first paragraph is what I thought was a sufficient introduction
asked by c 
Physics
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparts an initial speed of 6.0m/s?
asked by Whitney 
physics
A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?
asked by vicki 
math...
A. Solve a9=20 I did 20+9=29 299=20 a=29 Part b solve b9>20 I did b9>20 b9+9>20+9 b>29 Part c how is solving the equation in part a similar to solving the inequality in part b? I put They are both using the same numbers. Part D I put A is equal to and
asked by Anonymous 
science
Why did a portion of the tabletop get cold when Natasha placed her cold drink on the table? (1 point) The table’s molecules were vibrating more slowly in that area. The table’s molecules had spread further apart in that area. The table’s molecules
asked by Connie 
AP Physics
An ice skater skates 28 m southwest, then 56 m east, and finally 84 m in a direction 50.3 ◦ north of east.Find the magnitude of the displacement required to bring the skater back to her starting point. Answer in units of m
asked by josselin 
Math
Find a scalar equation of the plane that contains the given point P=(3,3,1)and the given normal vector n = (1,4,7)
asked by Tech N9ne 
Chemistry
I've been trying to figure this problem out all day and I STILL don't know how to solve for the specific heat constant. I blank after I set up the problem. Somebody please help me!!! What is the specific heat constant if 621 g of Metal A raises the
asked by Lilly 
Math
What is ^4 square root 1280r^8 t^12 in simplified form?
asked by Alex 
chemistry
The heat lost or gained by a system is related to its temperature change by a property called its heat capacity. The molar heat capacity of metals at or above room temperature equals 24.92 J/K.mol. The temperature of a block of lead (MM 207.2) was raised
asked by korko 
algebra
How do I graph x
asked by Janet 
algebra
can you help me with the Lesson 9: Operations and Applications of Scientific Notation Connections Education 1205070 M/J PREALG  T1 Unit 2: Rational Numbers test.What is the product of (5.1*10^3)*(3.2*10^3)? (please express your answer in scientific
asked by jasmine 
Math
State the side length of a square with an area of 27 cm2 in simplified radical form.
asked by Alex 
chemistry
A 23.0g sample of an unknown metal is heated to 91.5°C and is placed in a perfectly insulated container along with 102.g of water at an initial temperature of 21.80°C. After a short time the temperature of both the metal and water become equal at
asked by korko 
English
I have posted two essays recently and have received no response, one was only a few hours ago but the other one was over 10 days ago....pls help with the one from two hours ago or let me know if you are unable to help. thanks
asked by c 
physics
The half life period of radium is 1600 years.In how many years 1 gram of radium lose 1 centigram??
asked by Priyanka 
physics
Consider the following specific case of the system described in the example above. Suppose the angle θ is 78.0° and the mass of the ball is 7.00 kg.
asked by Anonymous 
Match
justine has 162 red buttons,98 blue buttons,and 284 green buttons. she says she knows she has more than 500 buttons without adding.do you agree? explain.
asked by Jay 
business
Students buy significantly more ice cream filled cakes after the cake producer announces it is going bankrupt shift of the demand curve or movement along the demand curve
asked by kussmodar 
business
college students rush and buy discount furniture to take advantage of a one day sale shift of the demand curve or movement along the demand curve
asked by kussmodar 
business
college students purchase many more energy drinks during finals week than during the rest of the semester shift of the demand curve or movement along the demand curve
asked by kussmodar 
business
Students eat more often as the federal government increases how much grant money it provides students shift of the demand curve or movement along the demand curve
asked by kussmodar 
Algebra 2
We have opposing answers, can you help? What is the simplified form of (2x2 + 4x – 3)(3x + 1) ? 6x3 + 10x2 – 5x + 3 * 6x3 + 14x + 5x – 3 6x3 + 14x2 – 5x – 3 my answer 6x3 – 10x2 – 5x – 3*
asked by Sandra 
trignometry
prove that the area of any triangle XYZ is y^2*sin(x)*sin(z)/2*sin(y)
asked by Sara 
Math
Why would you use square roots in the following question: Chang is participating in a charity bicycle road race. The route starts at Centreville and travels east for 13 km to Eastdale. He then makes a 135° turn and heads northwest for another 18 km,
asked by Alex 
Math
While hiking, Kristen went up 300 feet. If Kristen started at 100 feet above sea level, what is her elevation now? I need help with this question?
asked by Daniella 
Chemistry
PLEASE help because I'm really confused on how to do the entire thing. I don't know how to find the mL. Am I suppose to do anything with the 250mL? A person stops in every day and orders 250 mL of house coffee at precisely 95°C. but enough milk at 10°C
asked by Chad 
Physics
A hanging block of mass X is pressed with a force F at angle theta to the vertical against a frictionless wall and is connected to another hanging block of mass Y by a pulley system. What is the expression for the acceleration of Y?
asked by AnonymousPlease Help! 
English
Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow. People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear
asked by Asther 
Algebra
How do you solve the equation by taking square root 7p^2+16=2151
asked by NEED HELP 
Language
Which type of pronoun is being used in this sentence? 1. Jenny told her friends that someone was coming over this afternoon. 2. Who is going to make dinner tonight?
asked by dddd47905 
Algebra
In a sports poll, 53% of those surveyed believe their high school football team will win the state championship. The poll shows a margin of error of +5 percentage points. Write and solve an absolute value inequality to find the least and the greatest
asked by Jack 
Math3 questions. Plz help.
3. Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +
asked by Princess Anna 
Financial Math
A young executive deposits $400 at the end of each month for 9 years and then increases the deposits. If the account earns 6%, compounded monthly, how much (to the nearest dollar) should each new deposit be in order to have a total of $400,000 after 25
asked by Tom Newin 
physics
A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?
asked by vicki 
Oceans
(I think I'm supposed to use residence time?) About 30,000 years ago, during the last glacial maximum, glaciers and ice sheets stored enough water to decrease the sea level by 120 m. Presently, there are about 3.05x106 km3 of ice contained within the
asked by Sam 
English
I think it is B or C because you have to add ed to the word (finish) and (gather) to make it sound right and make sense.
asked by Sarah 
Geography
5 Factors that affects Tuareg peoples lifestyle.
asked by djdon 
math
Can 50/99 be simplified
asked by jealisa 
government
what inspired the constitutional convention? is it the article of confederation? when people saw it was inadequate and pretty much realized that it was useless. they had no power to regulate domestic affairs, no power to tax, etc also the rebellious
asked by anonymous 
Chemistry
I'm really confused about how to do these two problems. Please help me. What is the amount of heat (kJ) required if 64.0 kg of H2O is heated from 25°C to 85°C? 200.0 g Al (C = 0.900 J/g × °C) at 95°C is added to 85.4 g H2O at 25°C. What is the final
asked by Leah 
HISTORY 2
6. which of the following does NOT describe women's work in early Georgia A. Planting and tending a home garden B. Working at the local hospital C. Making clothes for the family D. Taking care of the children** 7. which of the following groups of new
asked by HELP ME 911 MS. SUE 
Physics 1
A block is given an initial velocity of 9.00 m/s up a frictionless incline of angle θ = 21.0°. How far up the incline does the block slide before coming to rest?
asked by Julie 
English
1. His hardest decision was not to go abroad. 2. His hardest decision wasn't to go abroad. 3. His hardest decision was / not to go abroad. 4. His hardest decision was to not go abroad. ================= #1 is a little difficult to comprehend. Sentence 1
asked by rfvv 
physics
If one walks straight up a 10 degree incline, what is the height achieved after walking 10 kilometers ?
asked by djon 
Science! URGENT
Bacteria can reproduce through asexual or sexual reproduction. Environmental conditions for a particular bacteria species are good and the bacteria are thriving. Which form of reproduction will the bacteria most likely use? A. The bacteria will most likely
asked by Gwen 
physics
what physics topics affect a laser surgeon?
asked by anonymous 
science
what volume occupy 90g/
asked by cody 
Please math help
A: I am choosing an integer. I then subtract 10 from the integer, take the opposite of the result, add 3, and find the opposite of the new result. My result is 3. What is the original number? B: Judy wants to do the activity in part (a) with her
asked by KG 
Chemistry
Please help me! I do not know what to do. 500.0 g ethyl alcohol at 25°C (C = 2.46 J/g x °C) absorbs 74.0 J of heat energy. What is the final temperature? What is the specific heat constant if 621 g of Metal A raises the temperature of 500.0 g of water by
asked by Kate 
math
Hawaii's lowest temperature on record is 11degrees Celsius. What would you expect to be true about the elevation of the site where this temperature was measured.
asked by KG 
Urgent geometry help
What would be the converse of the ihop saying " come hungry leave happy" This was my if then statement: if you come hungry then you will leave happy. And for my converse I had: if you leave happy then you came hungry. ***is this right? Is it okay to to not
asked by Anonymous 
Algebra
In the metric system there are two official temperature scales: degree Celsius and kelvin. The kelvin temperature scale is obtained by shifting the Celsius scale so of any heat whatsoever. An equation about the relationship between the two scales follows:
asked by KG 
Chemistry
Anyone know how to go about the problem? I don't know how to do it. Assume a professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at 15.0°C overnight and then wants it heated to 95°C when she gets there
asked by Josh 
Math! URGENT
96(w+5) Simplify this expression A. 15w+5 B. 15w+30 C. 6w39 D. 6w+21 Is the answer C?
asked by Gwen 
Physics
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 1.9kg projectile from rest to a speed of 5.1 × 103 m/s. The net force accelerating the projectile is 8.6
asked by Sam 
gemetry
How does the volume of a cone change when the radius is quadrupled and the height is reduced to 200406010400_files/i0300000.jpg of its original size
asked by ciara 
Math questions?
Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +
asked by Princess Annna 
trignometry
prove that the area of any triangle XYZ is y^2*sin(x)*sin(z)/2*sin(y)
asked by Sara 
History
in what ways do we rely on agriculture today
asked by Anabelle 🙏 
Math
For the given point and line, find by projection the point on the line that is closest to the given point and use perp to find the distance from the point to the line. P (3,5) line: x = (2,4)+t(3,4)
asked by Wes 
physics
A grocery sack can withstand a maximum of 230 N before it rips. will a bag holding 15 kg of groceries that is lifted from the checkout counter at an acceleration of 7.0 m/s^2 hold? this question has to do with force. thanks..
asked by janelle 
Math! URGENT
Solve the inequality 5p>30 A. p>6 B. p35 D. p
asked by Gwen 
TRIANGLE
length of AB,BC of scalene triangle ABC are 12,8 rerspectively.the size of angle is 59degree.find the length of side AC
asked by PUNAM 
physics
if a man moving away with the speed of 0.5 of sound from a stationary sound source producing a sound of frequency , he would hear a sound of frequency
asked by sara 
physics
Two stones one at equator and the other at poles are allowed to fall from same height and at same time.which one will strike the ground first?
asked by sukriti 
English
skip 1. to not do or have something;avoid 2. not to do or have something;avoid  What is the definition of 'skip'? Which one is right, #1 or #2 as the definition?
asked by rfvv 
Math Help.
Which inequality matches the graph. The dot is on the 1 and is a filled in circle with the arrow going to 4. A. 3x+1>4 B. 3x+1>/4 C. 3x+1
asked by Gwen 
ALGEBRA 2
1
asked by Argenia 
ALGEBRA 2
'OR" COMPOUND INEQALITY 1X>_3 OR 5X  1 > 19
asked by Argenia 
Physics
I believe this is a projectile motion problem with the angle = 0 degrees. A ball is thrown horizontally from the roof of a building 7.5 m tall and lands 9.5 m from the base. What was the ball's initial speed? How would I start off this problem? Or set it
asked by Lilian 
Please Help! Math
How to find the center and radius of a circle using 3 points... My 3 points are (2,8) (4,6) (1,1) I found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the
asked by B 
physics
the volume v of a sphere of radius r is given by v=4/3pie r^3 what is the fractional change in v for a fractional change in r
asked by mark 
chemistry
The specific heat capacity of gold at 25°C is 1.290×101 J/g/K. For a 5.25×102 g sample of gold, how much will the temperature increase if 6.908×102 J of energy is put into the system? (Assume that the heat capacity is constant over this temperature
asked by korko 
Physics
When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 852 N and the drag force has a magnitude of 1012 N.
asked by jeff 
physics
the volume v of a sphere of radius r is given by v=4/3pie r^3 what is the fractional change in v for a fractional change in r
asked by newton 
chemistry
The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1182 g of salicylic acid, in the presence of excess oxygen, causes the
asked by korko 
maths
(Multiplication under distributive property) 26*(48)+(48)*(36)
asked by anamika 
physics
a trolley of mass 40kg us pushed up a hill of height 10m at an angle of 20 degree. calculate the force required to reach this height. how do i complete this question?
asked by jordan 
Chemistry
5.0 grams of solid Ce2(SO4)3 was added to 100 mL of water. What is the total mass?
asked by Luc 
Math URGENT QUICK QUESTION
factor 96x3x^2 The expression x^28x+k cannot be factored if k has the value A.)7 B.)0 C)7 D)9 Please show me how to do these questions step by step so that I can understand & learn
asked by Bella 
English
1. Forgive me. I didn't know that. 2. Excuse me. I didn't see you there. 3. Pardon me. I made a mistake. (Are they all grammatical, showing 'forgiveness'?) 4. I swear that I will never leave you. 5. I swear to God that he will never leave you. 6. I swear
asked by rfvv 
English
Why did n't you do your homework? 1. I'm sorry, but I was very tired yesterday. 2. Excuse me, but I forgot to do homework. 3. Forgive me, but I was very busy caring for my mother in hospital.  Are the answers all grammatical? What other
asked by rfvv 
english
What is a telephone alarm card in f451? Did the citizens report other that had books by calling?
asked by english 
Math! URGENT
Describe the number of solutions for the equation. 5(x9)=5x A. No solution B. One solution C. Infinite solutions Is the answer B? Thank You for any help.
asked by Gwen 
floral design
You’ve been asked to create four bridesmaids’ bouquets for an upcoming fall wedding. The wedding will be held outdoors on a farm next to hayfields and an old, red country barn. The bridesmaids will be wearing dark cranberry dresses. The bride asks you
asked by lupe 
English
1. He was ashamed of having no money. 2. He was ashamed to have no money. 3..He was ashamed because he had no money. (Are they all the same and grammatical? Can we substitute 'shy' for 'ashamed'?)
asked by rfvv 
English
Find the complete subject and complete predicate. It was the distance from the elbow to the tip of the middle finger.
asked by Hope 
Math! URGENT
Describe the number of solutions for the equation. 2(x1)=2x2 A. Infinite solutions B. One solution C. No solution Is the answer B?
asked by Gwen 
English
1. She swore that she had nothing to do with it. 2. She vowed that she had nothing to do with it. 3. She bet that she had nothing to do with it. (Are they all grammatical? In meaning, are they the same?)
asked by rfvv 
English
1. I have a staff who works for me. 2. I have a staff who work for me. 3. I have a staff of one who works for me. 4. I have a staff of ten who work for me. 5. I have ten staff who work for me. 6. I have ten staffs who works for me. 7. I have ten step
asked by rfvv 
physics
Is momentum conserved when 2 carts having the same mass & the same speed collide, stick together and stop? what about the velocity
asked by mathew 
English
What rites of passage do individuals confront in the selection my brothers keeper?
asked by Alex 
English
1. The staff meeting will be finished next Tuesday. 2. The staff meeting will be finished in two hours. 3. The staff meeting will be finished after two hours. 4. The staff meeting will be finished tomorrow. 5. The staff meeting will be finished by
asked by rfvv 
physics
A duck has a mass of 2.2 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.12 N in a direction of 50° south of east. When these forces begin to act, the velocity of the
asked by Yiah 
English
1. Why don't you go to the park together?  Because I am too tired. 2. Why don't we go to the park together?  Because I am too tired. 3. Why didn't you go to the park together?  Because I was too tired. 4. Why didn't we go to the park together?  Because
asked by rfvv 
Finite
A box contains 8 blue balls, 3 white balls, and 5 red balls, and that we choose two balls at random from the box. What is the probability of neither being blue given that neither is white?
asked by Jess 
physics
a compound consist of carbon,hydrogen and oxygen only.the percentage by mass are carbon 40.0% and 6,7% hydrogen.calculate the empirical formulae
asked by ellen 
math
Evaluate the following expression using BODMAS rule (90/3*3+5)/(2*3+9)
asked by vijay 
ECE 201
Why is it important for teachers to understand students’ culture and backgrounds in an effort to address challenging behavior?
asked by Lena 
History
What are some similarities between the prayers of Islam and Christianity?
asked by Anonymous 
Physics
4. A ball is kicked toward a fence from a point 32 meters away. The velocity of the ball as it leaves the kicker’s foot is 24 m/s at an angle of 37 degrees above the horizontal. The top of the fence is 2.0 meters high. Assuming air resistance to be
asked by John 
math
23456782313%98
asked by Dhananjay 
science
what is the way that an organism either builds up or breaks down materials in the body for energy
asked by avery 
math...
Graph.. the circle is on 2 and is an open circle. Which inequality matches the graph? A. 6w+6>18??? B. 6w+6>=18 C. 6w6>18 D. 6w+6>14 The answer is A right?
asked by Anonymous 
statistics
In a school election, 5 people run for student body president. The actual number of votes for each candidate would be a ___ variable. If the total number of votes were removed and the candidates were listed in order of least to most popular, this would be
asked by mike 
life orientation
life orientationwhat is the factors that cause contemporary social issues
asked by tukz 
Algebra (Quadratics)
The height y (in feet) of a baseball thrown by a child is y = 1/10 x^2 + 3x + 6 where x is the horizontal distance (in feet) from where the ball was thrown. Will the ball fly over the head of another child 30 feet away trying to catch the ball? (Assume
asked by Ruth 
math
Is 3/7 greater or less than 15/56
asked by Gilbert 
Physics
Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of the automobile after 1.20 s have elapsed?
asked by Steven 
Physics
Air rushing over the wings of highperformance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps the cars hug the track more securely. The coefficient of static friction between the track and the tires
asked by Steven 
comm/215
how do i make one sentence subordinate to the other. sentence: People know they are going to have to retire. They often don't save enough money to do so comfortably. is this correct?: although people know they are going to have to retire, they often don't
asked by tiny 
Physics help please
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron. i found the photon energy using compton scatter
asked by Sarah 
Math
0.34divided by 100
asked by Noor 
math...
Solve b9>20 I did 299>20 But I'm not sure that's right.
asked by Anonymous 
statistics
In a school election, 5 people run for student body president. The actual number of votes for each candidate would be a ___ variable. If the total number of votes were removed and the candidates were listed in order of least to most popular, this would be
asked by shelly 
History
Did Christians convert others using force?
asked by Anonymous 
P5 Science  Energy
Need help.. Why do you think the other part of the leaf did not contain starch?
asked by J.Sarah 
ps 84
rewite you can bake a potato with the rays of the sun on a very hot day as an imperative sentence
asked by maria 
History
This time, I'm going for a change! Not dddd47906! What is one reason A. It did not allow national religions. B. it encouraged warfare among feudal lords. C. It made laws and set up courts to uphold them. D. It encouraged serfs to leave the manor. My
asked by dddd47905 
MATH
How do i find the center of a circle using 3 points. Also need to find the radius and the equation of the circle.... My 3 points are (2,8) (4,6) (1,1) I found the Equation of the perpendicular bisector of the line between the first and second point which
asked by B 
math
75ft^2= ___m^2
asked by Aye 
Mathplease check
Determine if a true bioconditional can be written from each conditional statement. If not, gove a counterexample. 1. If a = b then a = b Is this true? 2. If y^2= 64 then 3y=24 Is this false? Because if you do 8 both of them aren't equal
asked by Anonymous 
BIOCHEMISTRY
By using the Henderson Hasselbalch equation,Calculate the Pka of lactic acid when the concentration of lactic acid is 0.01 molar. the PH is 4.80 and concentration of lactate is 0.87 molar
asked by MAHA 
ssc
one diagonal of a parallelogram is 16.5. it makes angles of 36 degrees 10 minutes and 14 degrees and 30 minutes respectively with the sides. find the sides
asked by cris sept 
english
How to explain the PEE structure?
asked by kina 
BSurvey of Contemporary Economic Issues
Professional sports players are generally paid much more than farmers, factory workers, engineers, and teachers. The markets for the professional sports players, farmers, factory workers, engineers and teachers are generally competitive. Even among
asked by Tee 
Math
Mrs. Warren is making a snack for her class. The recipe calls for chocolate chips and peanuts in a ratio of 4:2. If Mrs. Warren needs 15 cups of the snack, how many cups of the chocolate chips does she need?
asked by Leo 
social studies
What sensory imagery can you use to describe the Taino perspective on the encounter with the Europeans?
asked by Jasmin 
World History (Please, Check My Answer!)
How did American and British views of legislature differ? A: British views of legislature differed from American views as each of the 13 legislature functioned like a miniature Parliament and made its ownlaws. White male citizens who owned land elected the
asked by Victoria 
P5 Science Energy
Part of the leaf that turned brown.
asked by J.Sarah 
P5 Science Energy
Please help me.... State the energy conversions in the maglev wind power station. ____energy(wind)>_____energy(turbines)>_____energy(generators)
asked by J.Sarah 
Calculus
I am so lost, I have no idea what to do next. Find the equation of the tangent line to the graph at the indicated point f(x) =x^2 +x ; a=1 I started out using f(1)= (1+h)(1)/h but i am so lost on what to do next. I have tried to look at examples in
asked by Erin 
math...
Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of television Julia can still watch this week. I did. 5÷1.5=3.33 T=time T
asked by Anonymous 
P5 Science
My full question. A leaf was plucked from the garden. The procedure for testing for starch in the leaf was carried out. Part of the leaf turned blueblack and part of the leaf just turned brown. Question : Why do you think the other part of the leaf did
asked by J.Sarah  Need help 
Algebra
Jill asks each of her classmates to choose a number, then multiply the number by 3, add 2 to the product, multiply the result by 2, and then subtract 14. Finally, each student is asked to divide the result by 6 and record the answer. When Jill gets an
asked by KG 
MATH
1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE 16 ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,4,7,0,3,3 B. 3,7,0,3,7,4 C. 7,3,0,3,4,7 D. 7,4,3,0,3,7 3. WHICH SYMBOL WILL MAKE 6 ? 6
asked by HELP ME 911 
Physics
Consider two spherical stones with same density (mass per unit volume). The larger stone has radius R = 8.58 cm and the smaller stone has radius r = 3.37 cm. Find the ratio of the terminal speed in air of the larger stone to that of the smaller stone.
asked by Steven 
statistics
SlfEsteem Scoresdepression Scores Mean 3.43 15.78 StrdDev 0.75 10.34 13. The above chart contains the means and standard deviations for selfesteem scores and depression scores. Using this information and the most likely correlation coefficient obtained
asked by matt