Questions Asked on
January 27, 2015

chem
If you burn 13.7 g of methane (CH4) burns in oxygen, then 686 kJ is evolved. What is the amount of heat produced per mole of methane burned?
asked by danny 
chem
1. A 4.61 g sample of one of the substances listed in the table below was heated from 21.3°C to 315.7°C, requiring 190 J to do so. What substance was heated? I got mercury(l) 2. Calculate the energy required in joules and calories to heat 33.9 g of
asked by james 
Physics
You (m=75.0 kg) are floating outside your space station, and oh no a siren sounds, and the doors start to close! At the instant the siren sounds, you are exactly 10.0 m from the station doors and floating away from the space station at a speed of 1.00
asked by Chloe 
math
The radiator in a car is filled with a solution of 70 per cent antifreeze and 30 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. If the
asked by jp 
math
A circle of radius 3 is centered at the origin and passes through the point (2,−5‾‾√). (a) Find an equation for the line through the origin and the point (2,−5‾‾√). y= (b) Find an equation for the tangent line to the circle at
asked by jp 
chem
The radiator in your car uses either water or ethylene glycol (antifreeze) to remove heat from the engine and dissipate it to the outside air. If the water recirculation rate is 17.0 kg per minute of water and the water temperature leaving the engine and
asked by danny 
Physics
How much work is it to push a box (mass 120 kg) up an incline (angle 16 degrees with the horizontal) that is 9.6 meters long, if the coefficient of kinetic friction between the box and the incline is 0.5?
asked by Sally 
math
The sum of two numbers is 12. The sum of their reciprocal is 3/8? what are the numbers?
asked by josh 
math
Tina wants to buy flannel sheets. She reads that a weight of at least 190 grams per square meter is considered high quality. She finds 3 options for flannel sheets: 1)1,100g of flannel in 6 square meters, $45. 2)1,260g of flannel in 6.6 square meters, $42.
asked by kymy 
math
If 1+2+3+...+200=x, what is (1+2+3+...+200)(2+4+6+...+200)? (solution pls... tnx)
asked by MNHS_HELP 
MATH!!
the ramp shown below is used to move crates of oranges to loading docks at diffrent heights.when the horizontal distance ab is 15 feet the height of the loading dock,bc,is 3 feet.what is the height of the loading dock de
asked by Makayla<3 
chemistry
When NH3 is treated with oxygen gas, the products obtained are N2(g) and H2O(l). If standard enthalpies of formation at 298 K for NH3(g) and H2O(l) are –46.00 kJ/mol and –286.0 kJ/mol respectively, calculate the enthalpy change of the reaction.
asked by Shana 
Spanish II
Hi! I have completed this assignment but I felt like I was guessing throughout the whole thing. Since I could not underline I instead put 5 periods and the numbers instead; the answers are below the paragraph. Is this paragraph correct? Complete the
asked by Tommy 
chem
When NH3 is treated with oxygen gas, the products obtained are N2(g) and H2O(l). If standard enthalpies of formation at 298 K for NH3(g) and H2O(l) are –46.00 kJ/mol and –286.0 kJ/mol respectively, calculate the enthalpy change of the reaction.
asked by shana 
Math
what factor do 4x^2 +13x+3 and 8x^2+22x6 have in common? i try and got answer of 12, am i right or wrong?
asked by Jay 
chemistry
2. A solution of I2 was standardized with ascorbic acid. Using a 0.1000g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. a) What is the molarity of the iodine solution?
asked by alexander 
algebra
factor completely. 49x^235x6 Please help with this, I know you multiply the two outer numbers which =294, I am just having trouble finding a pair of factors of 294 that sum add up to 35. thanks
asked by slomo 
Physics
A small rocket is fired in a test range. It rises high into the air and soon runs out of fuel. On the way down it passes near an observer (sitting in a 21.5mhigh tower) who sees the rocket traveling at a speed of 35 m/s and moving in a vertical plane at
asked by Rose 
chemistry
what mass of AgBr is produced when 100.0 mL of 0.150 M AgNO3 is added to 20.0 mL of 1.00 M NaBr?
asked by paul 
science
The steel round frame is 2,4m high. There have to be wrapd five coils around the frame. One coil diameter is 35mm. Each coil is 50m long. All of the coils have to be wrapd next to each other.What must the diameter be of the frame if the hight of the frame
asked by Jan 
Physics
A 10.0kg block is released from point A in Figure P8.57. The track is frictionless except for the portion between points B and C , which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2 250 N/m, and compresses
asked by Cameron 
English
can you give me five speeches that have become historically important ??
asked by Anonymous 
chemistry
1)what is the final pH of CHECOOH 0.18M ,CHECOONa 0.08M, HNO3 0.08M and NaOH 0.08M ? Ka=1.8^10(5) 2)what fraction of free edta is in the form )y^4) at ph=10?
asked by airam 
college chemistry
1)what is the final pH of CHECOOH 0.18M ,CHECOONa 0.08M, HNO3 0.08M and NaOH 0.08M ? Ka=1.8^10(5) 2)what fraction of free edta is in the form )y^4) at ph=10?
asked by airam 
math
what is 8899 rounded to the nearest thousand?
asked by adrianne 
Engineering Economy
Maintenance cost of an equipment is P20,000 for 2 years, P40,000 at the end of 4 years, and P80,000 at the end of 8 years. Compute the semiannual amount that will be set aside for this equipment. Money worth 10% compounded annually. My answer is
asked by Cathy 
Kate
Jay, Kay, Ray found themselves far apart for lunch while working in a field. Jay could see Kay, then turned 75 degrees and see Ray. Kay could see Ray, then turn 51 degrees and see Jay. Ray could see jay, then turn 54 degrees and see Kay. Which two were the
asked by Alison 
What study would be the best? Help with Psychology
What is the best kind of study to conduct when wanting to show that Variable X has a direct effect on Variable Y? The answer choices I am given are experiment, survey, observational study, non experimental study. I think the right choice would be an
asked by Mariya 
chemistry
a 126g iron rod has a heat capacity of 58 j. What is the specific heat of iron?
asked by Anonymous 
child development part 1
whichpoint of view concerning growth and development does the definition describe.behavior changes as a result of observing people in various situations a.behaviorism b.social learning theory c.humanism d.psychoanalytic theory my answer is b
asked by susue 
algebra
What is the theory of algebaric expression
asked by jagn 
LANGUAGE ARTS
Please help with question below What sort of day does Emily Dickinson describe in "the Sky Is Low, the Clouds Are Mean"? an uplesantly hot summer day a cold and nasty winter day a beautiful but sad autumn day a day fo fresh spring rain B a cold and nasty
asked by BUBBLES 
Anthropology
Marriage patterns vary by culture themselves. In some cultures, such as in Saudi Arabia, the practice of plural marriage is accepted and promoted. This particular practice, known as polygyny, refers to a man taking more than one wife. In the United States,
asked by jimmy 
anthropolopy
the book is misleading Describe the distinct differences between lineages, clans, moieties, and phratries are all types of decent groups.
asked by jimmy 
Science
#1 Which of the following allows a plant's vascular system to work as a transport system? A A plant's vascular system is made up of specialized cells that move around the plant as it grows. B A plants vascular system is made up of specialized cells that
asked by Maark 
Math word problems
An outdoor supply store has its regularly priced $160 jackets on sale for $120. What is the discount rate? 120/160*100=75% but that doesn't seem right. I believe it should be 25% discount, but I don't know how to set that up. Can someone tell me if the
asked by Ashley 
algebra
y/7=18
asked by pooh 
Math / Algebra
Can you check my work? Thank you :) 1. The Domain of a function F is the same as the range of F^1 (True or False?) Answer: True. 2. Does the function y = x2 have an inverse? Select the best answer. A. Yes, it passes the horizontal line test. B. No, it
asked by Allison 
Math
How do you find the surface area of a rectangular pyramid?
asked by christopher 
science
calculate the electric potential due to 0.001c0ulomb of charge at a distance of 100cm.
asked by Nitumoni 
math
A man was injured in an accident at work he receives a disability grant of R4800 in the first year. This grant increases with a fixes amount each year.. a). What is the annual increase if over 20 years he would have received a total of R143500 b). His
asked by Restoration 
english
4 Surprising Findings About Kids' and Teens' Reading, Plus What You Can Do to Help Kids Read More Can I determine the Author’s Purpose and/or Type of Nonfiction from the title? i can dertemine the authors purpose which is third but idk about the type of
asked by john234 
science
When a fan is turned on it changes electrical energy into blank energy is it ma. Motion b.magnetic c. Gravitational. D. Electromagnetic
asked by jenn 
Principles of Accounting 1
I need help please I don't understand this at all. Thanks. Part A: Prepare general journal entries to record the following transactions for the Harris Company. (The company uses the balance sheet approach for recording bad debts expense.) 2010 Dec. 31
asked by Dawn 
Science
A male peacock displays his colorful tail feathers in order to 1) increase the success rate of asexual reproduction 2) increase the gestation period 3) release gametes into its surroundings 4) attract a mate I chose 4
asked by Abby 
math
14z=56
asked by pooh 
chemistry 116
A 36.0 g piece of copper at 130.0 C is placed in 50.0 g of water at 20.0 C. What is the temperature (in C) of the water once the system reaches equilibrium? The molar heat capacity of copper is 24.5 J/(mol·K). The specific heat capacity of water is 4.18
asked by danny 
Art
What advantage does multispectral analysis hold over the Xray Machine? a. Multispectral analysis can analyze pigments that an Xray cannot detect b. multispectral analysis reveals what is not visible to the naked eye c. multispectral analysis can be
asked by Sandy 
MATH!!
~Determine whether each sequence is arithmetic or geometric fund the next three terms~ *Doing a math unit test and stuck on these five* 1.14,19,24,29.... 2.2,8,16,32... 3.81,27,9,3... 4.What are the first four terms of an arithmetric sequence if the
asked by Makayla<3 
English
Past tense and present tense
asked by Sinelethu tontsi 
Math
How do I find the exact interest on a loan for $3000 with a simple interest annual interest rate of 15% that was made on June 11 and was due on August 11.
asked by Greg 
matha
n a triangle one angle is of 70° and the other two angles are such that one is lesser by 20° then the other. what are the measure of these two angles
asked by zeshan 
Science
True / False: If a 40 kg person is accelerating at 10 m/s^2,then the magnitude of the force acting on him or her is 400 N. 1.How much force is needed to make a 60 kg object accelerate at a rate or 2.0 m/s ^2? 2.What is the acceleration of a 30 kg objedct
asked by Makayla<3 
PS 33
Marty 846 of its pizza Lewes 856 of his pizza Marty 8 more pizza in Lewes how is that possible
asked by Antonio 
ALGEBRA
Please help. The dashed figure is a dilation of the original figure. Fin the scale factor. classify the dilation as an enlargement or a reduction How do you input pictures?
asked by BUBBLES 
english
Common Sense Media's research report shows kids are reading less than ever. Discover the startling statistics  and what you can do to get your kids back into books. Do you have a teen who hardly reads? You're not alone. Common Sense Media's latest
asked by stacyy09 
ALGEBRA
Please help 15. The scale of a map is 1 inch = 24 miles. How many miles does 125 inches represent? 25 miles 31.25 miles 62.5 miles 49.26 miles My answer is 25 miles 16. The ramp shown below is used to move crates of fruit to loading docks of different
asked by BUBBLES 
Math
Find the adjusted balance due at maturity for a 90 day note of $15000 at 13.7% ordinary interest if a partial payment of $4000 is made on the 60th day of the loan.
asked by Greg 
business history economic and maths literacy
I just want to ask that will I be able to become a lawyer if am doing(beh)..need help asap
asked by scoop ziboti 
Physics
In the sum Vector A plus Vector B equals vector C, vector A has a magnitude of 11.6 m and is angled 36.5° counterclockwise from the +x direction, and vector C has a magnitude of 14.0 m and is angled 17.1° counterclockwise from the x direction. What are
asked by Anonymous 
physics
A rod with length L and mass m stand on a frictionless table. a ball with mass m and speed u cimped perpendicular to the rod a distance x from the bottom of the rod and sticks to it. what is the angular velocity of the rod+ball after the collison? I need
asked by david 
math
mr.flanders drives 1 2/3 miles to school and 1 2/3 miles home each day.he also drives an extra 2 2/7 miles to go to the gym.how many miles does he drive in one day?
asked by LAKSHMI 
Math
Which statement is a true statement 1. All rectangles are squares 2. All squares are rectangles 3. Every rhombas is a rectangle 4. Every rectangle is a rhombas
asked by Helper 
arithmetic
Determining the first three terms of an ArithmetiC progressionof which the (a.)10th term is 31 and the 15th term is 49 (b.)7th term is 3 and 12th term is 3 (c.)5th term is 8 and the 11th term is 28 (d.)9th term is7+9x and d=2x,Show all calculations
asked by Thandi Mstletoe 
achieving excellence
Part 1 of 1  5.0 Points Our learning style refers to: A. how much we know. B. how we best understand information. C. how fast we read and write. D. what we are learning. Reset Selection Mark for Review What's This? 5.0 Points Being aware of
asked by Anonymous 
Ethics
Kant thinks that morality is based on: a. Sentiment. b. Intuition. c. Reason. d. Impulse. John Arthurs main thesis is that morality is ________ religion. a. Dependent on. b. Independent of. c. Identical to. d. Inferior to.
asked by Carol 
COMBINED OPERATION ON FRACTIONS
J MADE 3 OVER 5 OF JOURNEY 3 OVER 4 OF REMEINDER BY TRAIN N WALKED REST.DISTANCE WALKED 3 KM.HOW LONG WAS THE JOURNEY
asked by EVA 
Math  Problem solving
How do I solve this type of problem? How many steps are there. The cost of a membership at a health club last year was 75% of the cost at the club this year. This year's membership costs $20 more than last year's membership. Find the cost of a membership
asked by Marie 
math
a 150giron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water . calculate the heat of fusion of ice.
asked by Ken 
Physics
What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)
asked by Kayla 
Math \ Algebra
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11),
asked by Wendy 
English
I have to pick a topic for an argumentative research paper, but when I think about different topics I realize that all of my ideas and support on the subjects are from other people's ideas that I have read or heard. So how do I come up with original ideas
asked by Bob 
Soscial Studies
In what way did European migrations most impact the increased diversity of south America?
asked by None Of Ur Business 
Geography
What does "thristy crops" mean?
asked by Ana 
math
6 friends shared 4 pear?
asked by ke 
math
use the function rule f (x) = 3x  2 find the output f (1.5) a. 2.5 b. 2.5 c. 6.5 d. 6.5
asked by help 
math
How would I show my work to the math problem? 6 friends share 4 pear?
asked by ke 
chemistry
A man pushes on a trunk with a force of 250 newtons. The trunk does not move. How much positive work is done on the trunk?
asked by angel 
math
Determine the value of k in y=kx^25x+2 that will result in the intersection of the line y=3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark) Here's my work on it: kx^25x+2=3x+4 kx^22x2=0 a)b^24ac
asked by Alex 
Physics
What is the gravitational force between two 10 kg iron balls separated by a distance of 0.1 m? How does this compare with the weight of one ball?
asked by Kayla 
Math 201
Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modeled by the quadratic function h(t) = 16t^2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the
asked by Alex 
"o caaption!My caption!"In ela!!Urget!!
1)In "o caption!my caption!"the poet is morning.... 2)Why are the people acting as they are in the following lines of "o caption!My caption"? *for you banquets and ribbon'd wreaths* *for you the swaying mass,their eager faces turning* 3)in the first line
asked by Random Student 
Math
Needing help setting these problems up...not necesarily giving me the answers. thanks. In January 2009 the state of Nevada was facing a budget deficit of $1.5 billion. The population of the state was approximately 2 million. How much would each person in
asked by Ashley 
i need help
what 3d imaging use to capture a digital map of an artifact? a. electromagnetic radiation b. laser technologe c. laser technology d. photography
asked by help?thanks 
Math
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11),
asked by Wendy 
math
a 150giron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water . CALCULATE THE HEAT OF FUSION OF ICE (The specific heat capacity of iron is 0.11 cal/g x C degrees.)
asked by Ken 
Algebra
use the function rule f (x) = 3x  2 find the output f (1.5) a. 2.5 b. 2.5 c. 6.5 d. 6.5
asked by Anonymous 
ALGEBRA
Please help 15. The scale of a map is 1 inch = 24 miles. How many miles does 125 inches represent? 25 miles 31.25 miles 62.5 miles 49.26 miles My answer is 25 miles 16. The ramp shown below is used to move crates of fruit to loading docks of different
asked by BUBBLES 
Physics
A 26.3 g marble sliding to the right at 21.0 cm/s overtakes and collides elastically with a 13.3 g marble moving in the same direction at 12.2 cm/s. After the collision, the 13.3 g marble moves to the right at 23.7 cm/s. Find the velocity of the 26.3 g
asked by Chris 
Math
64b is less than or equal to 14 I got 20 at first Then 2 Im very confuzzled Help please
asked by Audra 
mathematics literacy
Ed,edd,eddy and Ben shares an Apple pie ed has 8\3 edd has 1\5 and eddy has 1\4 how much is left for Ben? Please answers please please urgent!
asked by Felicia motaung 
plz help meeeee
what 3d imaging use to capture a digital map of an artifact? a. electromagnetic radiation b. laser technologe c. laser technology d. photography
asked by help?thanks 
Math  Problem solving
I used the guess and check method for solving this problem but would like to know how to set up the equation. A camp counselor buys granola bars and juice drinks for the campers. She decides to buy 3 times as many drinks as granola bars. Predict how many
asked by Marie 
physics vectors
In the sum Vector A plus Vector B equals vector C, vector A has a magnitude of 11.6 m and is angled 36.5° counterclockwise from the +x direction, and vector C has a magnitude of 14.0 m and is angled 17.1° counterclockwise from the x direction. What are
asked by Kelly 
phi 103
Every time I turn on the radio, all I hear is vulgar language about sex, violence, and drugs. Whether it’s rock and roll or rap, it’s all the same. The trend towards vulgarity has to change. If it doesn’t, younger children will begin speaking in
asked by shante 
algebra 2
Robert loves to dive . he joined the diving team . the diving board is feet above the water . if he jumps off the diving board as high as he can ( 10ft/s ) .how high above the water does he get ? and how long is he in mid air before he hits the water ?
asked by Shay 
physics
Two towers(the towers are the same) are built next to each other. the distance between them is d and there height is 10,000d. a ball is thrown horizontally from one tower to the other with spped v=sqrt(gd/2). assuming the ball collied elasticlly with the
asked by larry 
Math
Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?
asked by Amy 
Algebra
What is an expression that could be put in the blank so that the inequality would have the same solution set as shown in the graph? 4 < ______ < 16 The graph is is a numberline shaded between 4 and 6, with an open circle on 4 and open circle on 6.
asked by Max 
maths
Joe eats 2/5ths of pizza, Jane eats 1/6th, how many has Joe eaten more than Jane ?
asked by debs 
Math
Solve the following: x + 4=13
asked by Amy 
Chemistry
When iron rusts in air, iron (III) oxide is produced. How many moles of oxygen react with 7.2 mol of iron in the rusting reaction? 4Fe(s)+3O2=2Fe2O3(s)
asked by Alex 
chemistry
A solution contains 5.00g of urea per 0.100kg of water (COCNH2)2 if the vapour pressure of pure water at 25°c is 23.7ton. What is the vapour pressure of the solution
asked by Opite 
science
I need help Please!!!
asked by Abby 
Algebra (6th grade)
I need help on the algebra with pizzazz worksheet page 8 Objective 1h. Need the answers to letters OR or just the puns answer straight out please! ^_^
asked by emporerpenguin 
pharmacy tech
22 g of potassium iodide is diluted in 1 liters of sterile water for injection. what is the final percent strength
asked by Lalo 
mathematics literacy
John buys a bag of flour.he uses 1/3 to bake a cake and 2/5 to bake a loaf what fraction of the bag of flour is left?
asked by felicia motaung 
mathematics literacy
Ed,edd,eddy,and Ben shares an Apple pie. Ed has 1/3 edd has 1/5 and eddy has 1/4 how much is left for Ben?
asked by felicia motaung 
Calculus
The cost of producing x units of a certain commodity is C(x)=1000+5.70x+0.7x^2 . What is the average rate of change of C with respect to x when the production level is raised from x = 100 to x = 120 and when the production level is raised from x = 100 to x
asked by Pax 
math
An open box is to be made from a flat square piece of material 20 inches in length and width by cutting equal squares of length x from the corners and folding up the sides. (a) Write the volume V of the box as a function of x. Leave it as a product of
asked by jp 
social studies
1) One way that political leaders can avoid paying the full costs of a policy is by a. raising taxes. b. borrowing money. ** c. cutting other spending. d. retiring from office.
asked by Catalena 
Chemistry
Calculate the normal boiling point of a compound that has a vapor pressure of 19.30kPa at 167 Fahrenheit and a vapor pressure of 1.86kPa at 77 Fahrenheit.
asked by Annonymous 
mathematics literacy
1/3 plus 1/5 is?
asked by felicia motaung 
social studies
1) What is one certain longterm cost of adding to the national debt? a. american's in the future must have fewer public services b. american's in the future with not vote in elections c. american's in the future will not enjoy the benefits of the program
asked by Catalena 
Psychology
Treena is a personable student in Mr. Jordan’s math class. Mr. Jordan can see that Treena is popular with her peers. He regularly sees her conversing animatedly with her friends in the cafeteria and before and after school. She does well in class also.
asked by Cathy 
social studies
1) Politicians are most likely to make laws with shortterm benefits and longterm cost because? a. they do not understand economics. b. they are not worried about the future c. they wish to please voters today ** d. they think the laws are necessary If
asked by Catalena 
Science
If a 40 kg person is accelerating at 10 m/s^2, then the magitude of the force acting on him or her is 400 N. True False Is the answer True? Thank you
asked by Callie 
science
a colorblind woman marries a man who isn't colorblind. All of their sons are color blind but none of their daughters are color blind. color blindness is likely 1)the result of having two few chromosomes 2)the result of having and extra chromosomes 3)a
asked by Abby 
Physics
A man in search of his dog drives first 13.3 mi northeast, then 17.3 mi straight south, and finally 6.85 mi in a direction 30.3° north of west. 1. a) What is the magnitude of his resultant displacement? 2. b) What is the direction of his resultant
asked by Chris 
Physics
During a long airport layover, a physicist father and his 8yearold daughter try a game that involves a moving walkway. They have measured the walkway to be 41.5 m long. The father has a stopwatch and times his daughter. First, the daughter walks with a
asked by Chris 
Physics
A swimmer is heading straight for the other shore of a river with a velocity of vs=0.5 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.4 m/s. It takes her 20.6 s to get across. How far downstream does she end up?
asked by Chris 
Physics
The air speed indicator of a plane that took off from Detroit reads 349 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 46.5 km/h. a) Calculate the speed of the plane with reference to the ground.
asked by Chris 
Physics
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44
asked by Chris 
Physics
Pease evaluate the statements by choosing from these three statements Always true: the statement is true under any circumstances Not necessarily true: the statement may be true in some circumstances, but not in others Always false: under no circumstances
asked by Chris 
Physics
If you throw a ball into the air at some angle with respect to the horizontal, which of the following statements about the ball is true? The acceleration is zero at the top of the motion The horizontal component of the velocity is zero at the top of the
asked by Chris 
Physics
A juggler tosses a ball h = 2 m into the air with one hand and catches it with the other hand at the same level. Neglecting air resistance, how long is the ball in the air?
asked by Chris 
Physics
In an action movie, the heroine is supposed to jump with a motorcycle from the roof of one skyscraper to another one. The roof of the second skyscraper is h=9 meters lower, and the gap between the buildings is d=15 meters wide. Both roofs are horizontal
asked by Chris 
Physics
You are practicing throwing darts in your dorm. You stand 3.21 m from the wall on which the board hangs. The dart leaves your hand with a horizontal velocity at a point 1.94 m above the ground. The dart strikes the board at a point 1.73 m from the ground.
asked by Sally 
Physics
For a science fair competition, a group of High School students built a kickermachine that can launch a golf ball from the origin with a velocity of 12.9 m/s and initial angle of 31.7° with respect to the horizontal. a) Where will the golf ball fall back
asked by Tim 
Physics
What is the maximum height above ground a projectile of mass 0.67 kg, launched from ground level, can achieve if you are able to give it an initial speed of 78.5 m/s?
asked by John 
Physics
A plane diving with constant speed at an angle of 52.5° with the vertical, releases a package at an altitude of 499 m. The package hits the ground 3.87 s after release. How far horizontally does the package travel?
asked by Barbara 
Physics
An object fired at an angle of 31.9° above the horizontal takes 2.55 s to travel the last 15.5 m of its vertical distance and the last 10.5 m of its horizontal distance. With what speed was the object launched? (Note: This problem does not stipulate that
asked by Sally 
Physics
By trial and error, a frog learns that it can leap a maximum horizontal distance of 1.26 m. If, in the course of an hour, the frog spends 27.5 % of the time resting and 72.5 % of the time performing identical jumps of that maximum length, in a straight
asked by Tommy 
mathematics lit... fraction
1 1/2 plus 2 1/3 is?
asked by felicia motaung 
Science
How much net force is needed to make a 60 kg object accelerate at a rate of 2.0 m/s^2? A. 62N B. 62 kg C. 120 N D. 120 kg Is the answer C? Thank you
asked by Callie 
science
how do measure density
asked by jaspreet 
SS
#1 Which of these actions would most help a worker improve he productivity? A Finding a new job in a different field. B Taking a training course related to her job. C Buying a laptop computer for home us. D Asking her employer to give her a raise. #2
asked by Maark 
Art
What advantage does multispectral analysis hold over the Xray machine? A. Multispectral analysis can analyze pigments that an Xray cannot detect. B. Multispectral analysis reveals what is not visible to the naked eye. C. Multispectral analysis can be
asked by Callie 
Math Help
The average size 8 shoe is approximately 8 1/2 inches plus or minus a quarter of an inch . Write and solve an absolute value inequality that shows the range of possible lengths of a person'a foot that would wear a size 8.
asked by Rian 
math
a carpenter has several boards of equal length. he cuts 3/5 of each board . after cutting the boards the carpenter notices that he has enough pieces left over to make 4 of the original boards. how many boards did the carpenter start with
asked by Anonymous 
math
A rectangular room is 20 meters by 25 meets. It cost $20.00 per square meter to paint a room. How much would it cost
asked by Anonymous 
History
Where was Benedict Arnold as General John Burgoyne marches down the Hudson River to capture Albany
asked by M 
math
A room measure 12fy by 15ft find the scale that would allow the room to be showed large as possible on a piece of paper 7in by 8in explain your reasoning
asked by Sammy 
English
Can someone please tell me what this quote means? “We have everything we need to be happy but we aren't happy. Something is missing... It is not books you need, it's some of the things that are in books. The magic is only in what books say, how they
asked by Ana 
Math
Leena bakes a loaf of bread. She eats 1/8 loaf of bread and give 1/6 of it each of her 3 friends. What fraction of the loaf of bread is left?
asked by Jordan 
Math
Madison buys 2 3/5 pounds of meat. Her neighbor buys 3/4 pound more meat than Madison. How many pounds of meat do they buy altogether?
asked by Rakesh 
Math
At a parade 1/4 of the participants have red hair, 1/6 of them have brown hair, and the rest of the participants have black hair. What fraction of the participants have black hair?
asked by Anna 
Math
The average size 8 shoe is approximately 8 1/2 inches plus or minus a quarter of an inch . Write and solve an absolute value inequality that shows the range of possible lengths of a person'a foot that would wear a size 8.
asked by Anonymous 
algebra
what would the length of a spring be if a 4 lb weight stretched a spring to 20in and a 16 lb weight stretched a spring 26in
asked by alex 
Math
Directions: Find the Location on Unit Circle, Period & General Solution for this problem>>>>>>> sin^2x=3cos^2x What I have so far: sin^2x=3cos^2 sin^2x/cos^2=3 tan^2x=3 tanx=+and sqrt3
asked by Rachel 
language arts
which question should you ask during your third read of multi draft reading process? 1. who is the speaker, or the voice that "says" the words of the poem? 2. How has the work expanded my ideasor my imagination? 3. What do the word choices and imagery
asked by ben 
chemistry
DNA is approximately 2.5nm in length. IF an average man is 5ft 10 in. tall, how many DNA molecules could be stacked to extend from the ground to the top of the head of an average man.
asked by jaz 
Art
Digital 3D imaging makes use of laser technology to map and scan every point on an object’s surface. The result is a threedimensional computer image of the artwork that can be explored from every angle. This incredible tool is especially useful for
asked by Callie 
History
President Andrew Jackson relocated Native American tribes living in the South because he believed that A.Native Americans would be more prosperious in the west B.US Citizens living in the South wanted Native American lands C.Native Americans needed to be
asked by M 
History
A tarriff is a fee charged on A. All goods in the uS B. Ships wanting to dock in American ports C.Imported goods sold in US D.South Agriculture sold abroad C
asked by M 
History
The Nullification Crisis of 1833 occurred as a result of A.Unpopular tarriffs B.The role of a National Bank C.The expansion of slavery D.All of the above A?
asked by M 
History
In 1828 the US Congress increased taxes paid on imports to protect newly established northern industries from foreign competition The Southern economy was hurt by this protective tarriff because it A.increased the price of foreign manufacture goods B.led
asked by M 
L.A.
In “Adventures of Isabel,” how is the doctor different from Isabel’s other enemies—the bear, the witch, and the giant? (1 point) He is nice to her. He frightens her. He gets killed. He may be real. I think its either the first one or the last one
asked by Hailey 
History
Andrew Jacksone lection to the presidency of the US coincided with A.The start of civil war B.The end of mercantilistic policies imposed upon the US by Britan c.The end of US Mexican war D.The exntension of democracy to more people by extending voting
asked by M 
Language Arts
Which word in the following sentence is an adverb? Teresa smiled brightly as she and her younger brother looked for shiny shells on the sandy beach. • smiled (this one) • brightly • shiny • sandy What kind of word does the adverb in the previous
asked by Hannah 
History
Who developed the doctrine of nullification John C Calhoun? 14. I am a law that was applauded in the North but despised in the South Manufcaturesl iked me. Farmers wished I would go away My passage led to the Nullification Crisis What law am i A.Wilmot
asked by M 
Language Arts
Which word in the following sentence is an adjective? Jack trudged home through deep snow. (1 point) • trudged (this one) • through • deep • home 7. Which of the following words is a synonym for beseeched in the following sentence? Nathan beseeched
asked by Hannah 
Language Arts
Based on context clues, what is the meaning of deemed in the following sentence? The teacher deemed it necessary that all students turn in their reports before vacation, or they would receive half credit. (1 point) • voted • ruled (this one) •
asked by Hannah 
History
Virginia and Kentucky Resolutions Webster Hayne Debate Harford Convention Nullification Crisis The events above all have which concept in common A.states rights B.manifest destiny C.Womens suffrage D.freedom of religion A? The doctrine of nullification
asked by M 
project management
What are the things you would recommend for the team to manage project risks?
asked by jimmy 
Algebra
you estimate a building is 20 meters tall but it actually 23 meters what is the difference in percent?
asked by Georgia 
anthropology
Describe the distinct differences between lineages, clans, moieties, and phratries are all types of decent groups. Lineage is a descent group that can demonstrate their common descent from a known apical ancestor. Clan is a descent group that claims common
asked by jimmy 
Math
Will I use the distance formula for this problem. A airplane traveling at 390 km/hr in still air encounters a 65 km/hr headwind. How long will it take the plane to travel 725 km into the wind? 390=r*65
asked by Monique 
Algebra 2
Quick Question In log(base of 1000) 0.1 , how exactly would you find x Since 1000^x = 0.1 isn't really working.
asked by BillyBoy 
physics
A boy on a 2.2 kg skateboard initially at rest tosses a(n) 8.4 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.60 m/s, find the boy’s mass.
asked by Bob 
Physics
A 0.145 kg baseball pitched at 39.9 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between r the bat and ball is .001 s, calculate the average force between the ball and bat during contact. I know
asked by Anonymous 
US History
Which of the following 19th century developments most undermined the racial philosophy John C. Calhoun Outlined in the excerpt from his 1848 Senate speech? A The establishment of the Ku Klux Klan B The enforcement of the black codes C. The suspension of
asked by Crystal 
Math
The area of a parallelogram is 84 cm² the base of the figure is 12 cm what is the height?
asked by Anonymous 
Art
What technology would be best to use when analyzing the pigments in a large mural? A. Photo editing software B. 3D imaging C. Xray D. Multispectral analysis Is the answer D? Thank you
asked by Callie 
algebra
The perimeter of a rectangular piece of plastic is 22 millimeters. The area is 30 square millimeters. What are the dimensions of the piece of plastic?
asked by jose 
Biology: I am really confused.
What is an experiment group and what is a control group? I was thinking an experiment group were people who experiment the world around them out of curiosity.... and that a control group was people who tried to make the world around them better.... is that
asked by Lila 
math
andrew read 24 pages of a book on Monday. He read 5/12 of the book on Monday and completed the remaining 1/4 on Tuesday. How many pages are in the book?
asked by Anonymous 
algebra
The cost of renting a sailboat at a lake is $20 per hour plus $12 for life jackets. Write an equation in slopeintercept form that can be used to calculate the total amount you would pay for using this sailboat.
asked by Anonymous 
PLEASE HELP!!!!! I have to leave soon, sorry!
What is an experiment group and what is a control group? I was thinking an experiment group were people who experiment the world around them out of curiosity.... and that a control group was people who tried to make the world around them better.... is that
asked by Lila 
History
Andrew Jacksons election to the presidency of the US coincided with A.The start of civil war B.The end of mercantilistic policies imposed upon the US by Britan c.The end of US Mexican war D.The extension of democracy to more people by extending voting
asked by M 
math
Mindi planted beans in 4/10 of her garden. What fraction of the garden has beans or peas?
asked by Anonymous 
Social Studies
Please check my answers and let me know. THANK YOU!! 2. Which describes monarchy? A. rule by religious authorities B. rule by a small group C. rule by the people D. rule by a king or queen** 3.Which describes anarchy? A. rule by a small group** B. rule by
asked by SKI 
math
A store has 300 televisions on order and 80% are high definition. How many televisions on order are high definition?
asked by makenzey 
Math
Of the coins in Tricia's bank, 5/7 are quarters. If Tricia has 95 quarters in her bank, how many coins does she have in all. Is this correct? 5/7*x = 95 (7/5)(5/7)*x = 95 x= 95*7/5 95x7 = 665 665/5=133 x=133 Thanks from a Grandma helping w/4th grade math
asked by Robin 
science
for every cubic meter of 30 degrees celsius saturated coded to 16 degrees celsius fowmany grams lost
asked by vince 
Geography
The shoreline has retreated as much as 50 miles and its level has dropped by 40 feet. Can someone explain this sentence to me?
asked by Ana 
Social Studies
1.Which Persian emperor was defeated by Athenian forces at the Battle of Marathon? A. Darius** B. Cleisthenes C. Miltiades D. Solon 2.Which Greek historian chronicled the events of the First and Second Persian Wars? A. Plato B. Sophocles C. Thucydides D.
asked by Anonymous 
Physics
A(n) 0.491 kg football is thrown with a speed of 17.8 m/s. A stationary receiver catches the ball and brings it to rest in 0.0147 s. What is the magnitude of the impulse de livered to the ball? Answer in units of kg · m/s
asked by HELP PLEASE 
physics
A block with initial velocity of 3 m/s slides 9m across a rough horizontal surface before coming to rest. What is the coefficient of kinetic friction? V^2=Vo^2+2ax 0=9+18x a=1/2 Ffr=mukFn Sigma F=ma ma=mukFn
asked by Grace 
Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor
asked by Pablo 
Physics
A bicycle wheel has a diameter of 47.6 cm and a mass of 0.809 kg. The bicycle is placed on a stationary stand on rollers and a resistive force of 60.1 N is applied to the rim of the tire. Assume all the mass of the wheel is concentrated on the outside
asked by Youthers 
Physics
A bicycle wheel has a diameter of 47.6 cm and a mass of 0.809 kg. The bicycle is placed on a stationary stand on rollers and a resistive force of 60.1 N is applied to the rim of the tire. Assume all the mass of the wheel is concentrated on the outside
asked by Youthers 
Calculus II (Math)
integral of 5e^(0.7x)
asked by JAY Z 
math
3x + 4 < 19 5 +c/9(greater than/equal)31
asked by larren 
English
What kind of a source is a cartoon & a song about the sinking of Titanic? I would say that they're both secondary sources.
asked by Anonymous 
Chemistry
a mothball composed of naphthalene has a mas of 1.06g. how many napthalene molecules does it contain
asked by Mandi 
math
6y15+8=2y 75=m/3+10 10x16=14
asked by pooh 
Chemistry
A sugar crystal contains approximately 1.7x10^17 sucrose. What is its mass in milligrams?
asked by Mandi 
EnglishScarlet Letter
Chapter 13 1. The point of the statement in the first paragraph, “The public is despotic… to its generosity” is to a. Argue that the public will eventually see reason b. Assert that the public upholds certain rights for its citizens c. Suggest that
asked by Stacy 
calculus 1
A rock is dropped off the edge of a cliff its distance S (in feet) from the top of the cliff after T seconds is S(T) = 16t^2. Assumme the distance from the top of the water below is 96ft. When will the rock strike the water? T=16t^2 96 96=16t^2 80=t^2 4
asked by sky 
Math
Alana spent $21 of her $300 paycheck on a gift. What percent of her paycheck was spent on the gift?
asked by Makenzey 
chemistry(limiting reagent)
Al2(SO3)3 + 6NaOH > 3Na2SO3 = 2 Al9OH)3 If 10.0g of Al2(SO3)3 is reacted with 10.0g of NaOH, determine the limiting reagent? help!!!
asked by lily 
physics
Two 4.0cm × 4.0cm square aluminum electrodes, spaced 0.50mm apart are connected to a 300V battery. What is the charge on the positive electrode? I already found the capacitance which turned out to be 28 pF.
asked by Anonymous 
Math
A piece of wire 27/32 inches in length is cut into 3 equal pieces . How long is each piece 27/32 , 3/1 =81/32 =27 Is this right
asked by Weslee Clark 
Math
Hector gas tank was 3/4 full. What percent was emdpty
asked by Hyna 
chemistry
Calculate the number of collisions per second of one hydrogen molecule at 24 °C and 1.00 bar. The diameter of a hydrogen molecule is 270 pm.
asked by Anonymous 
history
where did the united states get the most of the money to finance world war 1
asked by candy83410 
calculus 1
A rock is dropped off the edge of the cliff and its distance S ( in feet ) from the top of the cliff after T seconds is S ( T ) = 16t^2. Assume the distance from the top ofthe cliff to the water below is 96ft Make a table of the average velocity and
asked by sky 
math 4th grade
llene is making smoothies. The recipe calls for1 1/4 cups of strawberries. How many cups of strawberries, written as a fraction greater than one, are used in the recipe?
asked by Anonymous 
science
When the temperature of the air in a hot air balloon increases, what happens to the volume of the gas?
asked by tommy 
calculus
Please i need help with this. Find the area bounded by the curves y0…5  4x = 0, 2x  y  4 = 0
asked by Jazmine 
English
She told me that I was kind to her.  Does 'her' refers to 'she'? Or does her refers another female?
asked by rfvv 
Physics
A +1.3nC point charge is placed at one corner of a square (1.1 m on a side), and a 3.1nC charge is placed on the corner diagonally opposite. What is the magnitude of the electric field at either of the other two corners?
asked by Anonymous 
science gases
The air that you breathe is a gas.List other gases that you have heard about in a science class.
asked by tommy 
history
When and why did the Russia leave world war 1.How did Russia withdraw affect WW1
asked by love22 
L.A
"Yearnings" The slab of clay before me, lifeless and lacking ambition, refuses to be molded. "Shape your dreams!" The art teacher says. "Let your hands talk to your hearts!" Nothing Just unshaped dreams, silent hands, and hardening clay on a
asked by ben 
Physics
3. An 80 kg skier is skiing down a slope (assume its frictionless) as shown in the diagram. The skier then hits a patch of sandy snow that applies a constant frictional force of 320 N directed up the slope. a. What is the skiers acceleration before hitting
asked by Krystal 
Math
Ratio of tickets Mark to Julia is 4:3. Julia has 36 tickets. How many tickets did they have together?
asked by Anonymous 
physics
A 200kg rock is being pulled upward with an acceleration of 3 m/s2. The net force on the rock is
asked by Anonymous 
physics
The net force vector for an object in motion is a. always in the same direction as the object's acceleration vector. b. sometimes in the same direction as the object's acceleration vector. c. always in the same direction as the object's velocity vector. d.
asked by Anonymous 
physics
6) CRITICAL THINKING: Kinematic equations are only valid for situations with constant acceleration. Using Newton’s second law, explain some examples of nonconstant acceleration?
asked by Anonymous 
Math
How many feet across is a circular playground that has a fence
asked by Yasmine 
Math
Number of packages of red peppers to number of packages of green packages is ratio of 8:13. Peppers are sold in 2pound packages. What is the least possible weight of red peppers in bin?
asked by Anonymous 
math
Two coworkers picked up some writing instruments at the office supply store. Shane selected 3boxes of pencils and 1box of pens, paying $8. Terrell spent $6 on 1box of pencils and 1box of pens. What's the equation for shanes total cost? Equation for Terrell
asked by cj 
anthrpology
If polygamy is successful in cultures, say in the Middle East as an example, then why isn’t it successful in the United States?
asked by jimmy 
Math
The average size 8 shoe is approximately 8 1/2 inches plus or minus a quarter of an inch . Write and solve an absolute value inequality that shows the range of possible lengths of a person'a foot that would wear a size 8.
asked by Rian 
Earth Science
Describe how weathering and erosion can be both destructive or constructive. I am still confused on the difference of erosion and weathering...
asked by INeedHelp 
Geometry
I am having trouble with this question. I do not know where to begin. I am in Trig now and we are doing review but I forgot everything that I learned in Geometry. I want to understand how to do this problem. "a picture measures 20 cm by 25 cm. the width of
asked by Hutch 
math
Barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead, and so on. Write the numbers for the first eight beads that are white. What is the rule for the pattern?
asked by Adonis 
history
What nations were created and destroyed through the Treaty of Versailles
asked by Anonymous 
English
Is he doing well in class? 1.  No, he isn't. You see, he can't read or write. 2.  No, he isn't. You know, he can't read or write.  Are both the same? Which one is commonly used, 'You see' or 'You know'?
asked by rfvv 
geometry
A diagonal of a square checkboard is 20 inches long. find the length of one side of the checkerboard,
asked by rena 
Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor
asked by Pablo 
history
why did the US never joined the league of nations
asked by sophie55 
Math
If you need to find the percent of a number, explain how you can predict whether the part will be less than, greater than, or equal to the number.
asked by Kathy Daly 
chemestry
Zinc chloride (ZnCl2) is 52.02% chlorine by mass. What mass of chlorine is contained in 85.0 g of ZnCl2? Answer in units of g
asked by yahya 
Chemistry
Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction
asked by Anonymous 
english
boldface and/or italics throughout the piece? could you explain to me why there put into the story
asked by stacyy09 
Math
find the sum of the interior angles of a nonagon. I know a nonagon has 9 sides.. A. 140 degrees B. 1,620 degrees C. 1,260 degrees D. 1,450 degrees If the question is asking for each interior angle then I think the answers A but if it's asking for the sum
asked by ash 
Physics
How much heat is contained in 100 kg of water at 60.0 °C?
asked by Sarah 
math
Karyn cuts a length of ribbon into 4 equal pieces, each 1 1/4 feet long. How long was the ribbon?
asked by taniya 
Physical Science
Which of the following statements are true about chemical reactions? Check all that apply. A. Reactants are on the right when writing a chemical reaction. B. Products are produced in a reaction. C. Reactants are present at the end of a reaction. D.
asked by jen 
Math
1. is line "L" parallel to line "M"? *picture of a transversal.. lines L and M don't touch and one line crosses through line L and M to create a transversal. angles 124 and 118 are on the bottom left side of the transversal* I tried my best to explain the
asked by ash 
math123
what is the scientific notation of 0.000089956?
asked by ann 
Calculus
differentiate tan1(2x/1x^2)
asked by Francis