Questions Asked on
January 29, 2015

Chemistry
consider the following reaction at 298K 4Al(s)+3O2(g) yields 2Al2O3(s) delta H= 3351.4 Kj find delta S sys find delta S surr find delta S unvi
asked by Jake 
Science
2. why is gas able to flow? a) Its particles have melted and can move around b) Its particles have high viscosity and can move around c) Its particles have enough energy to move around d) Its particles have enough pressure to move around 3. Which of the
asked by Kennabug 
URGET!!
DOING A 20 QUESTION MATH TEST AND GOT STUCK ON THESE PROBLEMS!!:( 1.find the three terms in the sequence 30,22,14,6,.... 2.write a rule for the sequence 4,8,16,32 3.find the firstfour terms of the sequence represented by the expressed sequence 3n + 5. 4.a
asked by MS SUE OR ANYBODY PLZ HELP URGENT!!!:( 
Algebra 2
what is the inverse of the given relation? y=3x+12 help explain the steps??
asked by Jasmine 
calculus
A trough is 9 feet long and 1 foot high. The vertical crosssection of the trough parallel to an end is shaped like the graph of y=x4 from x=−1 to x=1 . The trough is full of water. Find the amount of work in footpounds required to empty the trough by
asked by Catherine 
Math
The perimeters of a kitchen is 528 inches.If the width of the kitchen is 120 inches,what is the length of the kitchen?
asked by Anonymous 
EdTech
1.what contributes to your passive digital footprint? A)entering your address into a website to sign up for a contest B) cookies that track your online habits**** C) uploading a profile picture to a social media site D) posting information on your personal
asked by Ziggy 
Social Studies
1.how did northern and southern responses to the fugitive slave law affect their relationship? a.it deepened fear and anger between the north and south b.it deepened the commitment to compromise c.it encoraged northern commitment to end plantation life
asked by i am awesome 
Math
Which is NOT an appropriate classification for a triangle? A. Right Equilateral B. Acute Scalene. C. Obtuse Isosceles D. Right Scalene Is the answer D? Thank you
asked by Callie 
Physics
A 50 cm diameter wheel rotates through 25 radians. How do I figure out the amount of distance it will move?
asked by Anna 
math
Homeroom 101 and Homeroom 102 share a hallway bulletin board. If Homeroom 101 uses 3/5 of their half to display artwork, what fraction of the board is used to display to display Homeroom 101's artwork? Which is correct3/5 x 1/2 , 3/5 divided by 1/2. or
asked by Angel 
LA
Can you help me with this question? What is the secret to reaching someone with words??
asked by Anonymous 
Math
Hi everyone! I am extremely struggling with this questions and was hoping someone would go over them with me. Thank you! 1. Which of the following expressions is written in scientific notation? a. 73.4 x 10^5 b. 0.09 × 10^7 c. 80 x 10^3 d. 4.22 x 10^–3
asked by Tia 
Maths
Two observers P and Q 15m apart observe a kite in the same vertical plane and from the same side of the kite.The angle of elevation of the kite from P and Q are 35 degree and 45 degree respectively.Find the height of the kite to the nearest metre.
asked by Debbie 
Social Studies
1.Mark the statement if it is a reason that Rome was a good site for a city. A. Rome was located on a large river.** B. Rome was built on seven hills, which offered natural protection from invaders. C. Rome had an ideal seaport.** D. The climate of Rome
asked by Anonymous 
math
find the unit price for each option shown below. round to the nearest cent if nessicary indicate which option is better to buy?
asked by lilly 
Chemistry
Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points. CoCl3 K2CO3 KNO3
asked by Megan 
Art
Ancient native americans chose willow strips to make baskets because they were easy to bend and 1.easy to find. 2.rare and valuable. 3.multicolored. 4.waterproof. Please help :(
asked by Helper 
Art
What is synthetic resin preferable to natural resin? A. synthetic resin will not yellow, crack, or dissolve in liduid. B. synthetic resin will not yellow, obscure, or damage in paint. C. synthetic resin will not destroy paint pigment, crack, or yellow the
asked by Anonymous 
chemistry
Rank the following species according to the increasing energy needed to raise the temperature of 10.0 g of the substance by 25.0 ∘C. Aluminum.897J/g water 4.184J/g Stainless steel  .500J/g cast iron .460J/g copper.385J/g Can someone please show me
asked by Court 
Spanish
Which of the following is usally included in Gabriel Garcia Marquez's writings? 1. travels abroad during war 2.life,food,politcs,and conflicts in south america 3.magic superstition about food in La Candelaris Please Help :(
asked by Helper 
Math Help!!
When the owner of a gas station sets the price of 1 gallon of unleaded gasoline at 2$, he can seek approximately 20,000 gallons per day. When he sets the price of gas at 5$ per gallon, he can sell approximately 14,000 gallons per day. Let G(x) denote the
asked by Victoria 
Science
1. Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from
asked by Anonymous 
tech cheack answers plz
1.) Which of the following is the best strategy for studying test? a) Sitting alone in a chair in a quiet room, looking over your textbook. b) Working in pairs and exchanging practice questions. c) Developing a personal method that is right for you and
asked by techr 
business math
A second hand furniture store buys sofas with a list price of $9,500. If the wholesaler offers trade discounts of 10/20/30, find the single equivalent discount.
asked by tia 
economics,english,mathslit,accounting,business,zul
Iam in matric Nd would like to be in the university in JHB,PTA i am doing maths lit accounting economics business studies english and isizulu
asked by siyabonga mhlanga 
Technology
Which of the following is benefit that education simulations do NOT provide? A.They use real objects that can physically be touched. B. They allow you to manipulate the objects by turning them around virtually. C. They can use 3D movement and objects. D.
asked by Tia 
physics
An owl is carrying a mouse to the chicks in its nest. Its position at that time is 4.00 m west and 12.0 m above the center of the 30.0 cm diameter nest. The owl is flying east at 3.50 m/s at an angle 30.0º below the horizontal when it accidentally drops
asked by kaval 
Chemistry
A chemical company claims that they are able to produce a certain product through thermodynamically favored process. Explain how this is possible?
asked by Anonymous 
math
explain the error Janine tells her friend that ordered pairs have an x coordinate of 0 lie on the x axis. She uses the origin as an example. Describe Janine's error. Use a counterexample to explain why Janine statement is false.
asked by camryn 
Social studies
how did northern and southern responses to the fugitive slave law affect their relationship? A.it deepened on fear and anger B.it deepened the commitment to compromise C.it encouraged northern commitment to end plantation life D.it encourage southern
asked by Alyssa 
math
Which property is NOT a characteristic of a parallelogram? a) Opposite sides are congruent b) All angles are congruent c) Opposite sides are parallel d) Opposite angles are congruent
asked by Skylar 
Chemistry
Suppose you tired to carry out a doublereplacement reaction by mixing together equal volumes of a solution that contained dissolved NaF and a solution that contained dissolved NaCl. Would you expect a reaction, if so write the balanced chemical equation?
asked by Keely 
chemistry
if you burn 20.2g of hydrogen and produce 1.80x10^2g of water, how much oxygen reacted?
asked by mohamed 
Science
According to the theory of plate tectonics, how do two plates interact to form coastal volcanic ranges? A. A continental plate slides along an oceanic plate at a convergent boundary. B. A continental plate collides with another continental plate at a
asked by Anonymous 
Statistics Helps
Carter has a large marble collection. Carter knows that he has exactly 20 blue marbles in his collection, but does not know how many marbles he has in all. Carter mixes up his marbles and randomly selects 40 marbles. Of the 40 marbles that he chose, 4 were
asked by Desmond 
Science!!
**PLEASE HELP FAST** how is newton's second and third law of motion important to your everyday life?? **PLEASE HELP**
asked by Sophiaa 
physics
A ball rolls off a 1.40 m high table with an initial horizontal speed of 0.600 m/s. How far will it land?
asked by axel 
Art
What is synthetic resin preferable to natural resin? A. synthetic resin will not yellow, crack, or dissolve in liduid. B. synthetic resin will not yellow, obscure, or damage in paint. C. synthetic resin will not destroy paint pigment, crack, or yellow the
asked by Kayleigh 
chemistry
4FeS (s) + 7O2 (g) > 2Fe2O3 (s) + 4SO2 (g) Entropy value for iron (II) sulfide is 67 J/K mol I don't understand how to find entropy
asked by baehji 
English
In "One Day, Now Broken in Two," what group of people does Quindlen decide are “correct” in their views? A. the optimists B. the pessimists C. the realists I think it's A
asked by Emi 
georgia state history
One of the reasons given for the colonization of Georgia was to serve as a "buffer" colony. This meant that Georgia was
asked by jam 
chemistry
What is the mass (in kilograms) of a cube of silver that measures 0.26m on each side
asked by felicia 
Physics
A hollow metal sphere has inner and outer radii of 20.0 cm and 30.0 cm, respectively. As shown in the figure, a solid metal sphere of radius 10.0 cm is located at the center of the hollow sphere. The electric field at a point P, a distance of 15.0 cm from
asked by Matt 
LA
Good Morning Ms. Sue. Can you look over my answer. Thank you :) Which of the following describes the word dew? A) What happens when you don’t get enough sleep for a few nights? B) What happens to your teeth when you get too much candy? C) What happens to
asked by Anonymous 
physics
What potential difference is needed to stop an electron having an initial speed of 3.70x 105 m/s? Answer in volts
asked by Allie 
Chem
I just need to know if I did the problem correctly. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3(g) → P4(g) + 6H2(g) If the instantaneous rate of the reaction with respect to PH3 is 0.41
asked by Anonymous 
social studies
Regarding the Electoral College, which of the following statements is false? A. Electors vote on the first Monday after the second Wednesday in December. B. The electoral vote results are transmitted to the Secretary of State. C. The electoral college is
asked by tamijah23 
Math
Name the quadrilateral with exactly one pair of parallel sides. A. Kite B. Parallelogram C. Rhombus D. Trapezoid Is the answer D? Thanks
asked by Callie 
physicss
A 0.145 kg baseball pitched at 44.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is 3.00 ✕ 103 s, calculate the average force between the ball and bat during contact.
asked by Bob 
College Algebra
Allison drove home at 65 mph, but her brother Austin, who left at the same time, could drive at only 41 mph. When Allison arrived, Austin still had 144 miles to go. How far did Allison drive?
asked by Sierra 
english
In this discussion, you will post issues related to motivation and learning. Refer to the texts in this section, other texts you have read, and your personal experience and knowledge to support your ideas. Begin your discussion by addressing the following
asked by jacky 
physics
Two point charges are placed at two of the corners of a triangle (Take q1 = 10.2 µC, and q2 = 16.3 µC.) Find the magnitude and the direction of the electric field at the third corner of the triangle.
asked by Sam 
physics
With an average acceleration of −1.3 m/s2 , how long will it take a cyclist to bring a bicycle with an initial speed of 13.7 m/s to a complete stop? Answer in units of s.
asked by Anna 
Programming Logic and Design
The Romance World Cruise Line provides special gifts and celebrations for passengers who are newlyweds, as well as for those who have been married more than 40 years. Design a flowchart and pseudocode for a program that accepts a couple's last name, ship
asked by Wayne 
Science
Which type of climate receives the most intense solar energy? A. grasslands climate B. tropical climate** C. polar climate D. temperate climate
asked by Anonymous 
personal finance
As a college senior, Jessica was offered a new credit card that allowed her to take a 10% discount on the first month's purchases. She accepted the offer and made purchases that totaled $156.19. How much did she owe after the discount was deducted from the
asked by star 
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. a) What is the magnitude of his resultant displacement? b) What is the direction of his resultant displacement?
asked by Stacy 
physics
An aircraft has a lift off speed of 130 km/h. What minimum uniform acceleration does this require if the aircraft is to be airborne after a takeoff run of 350 m? Answer in units of m/s2
asked by Mark 
physics
A +1.4nC point charge is placed at one corner of a square (1.8 m on a side), and a 2.5nC 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 Matt 
Chemistry
I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and Na++ with 33.52) a. How
asked by Morgan 
physics
A dragster is speeding down the track at 150m/s. its rear wheels are 2m in diameter, and its front wheels are 40cm in diameter. What are the angular velocities of the front and rear wheels, respectively?
asked by Rico 
physics
An electron moving parallel to x axis has an initial speed of 2.51x106 m/s at the origin.Its speed is reduced to 1.76x105 m/s at the point x=3.12 cm. Calculate the potential difference, in Volts, between the origin and that point.
asked by Amy 
Math
Wendy earns $2 for every table she serves plus 20% of the total customer order. Define a variable and write an expression to represent the amount of money she earns for one table.
asked by Isa 
georgia state history
What effect did Hernando de Soto’s expedition in Georgia have on Native Americans there?
asked by jam 
Science
A mineral breaks into flat sheets when struck with a rock hammer. Which property of a mineral is being measured? A. hardness B. cleavage** C. streak D. color
asked by Anonymous 
math
Adam drew two same size rectangles and divided them into the same number of equal parts.He shaded one third of one rectangle and one forth of the other rectangle.What is the least number of parts into which both rectangles could be divided?
asked by Emily 
Chemistry
In the process of separating pb2+ ions from cu+2 ions as sparingly soluble iodates, what is Pb2+ concentration when Cu+2 begins to precipitate as sodium iodate is added to a solution that is initially 0.0010M Pb(NO3)2 (aq) and 0.0010M Cu(NO3)2 (aq)? I know
asked by Anonymous 
physics
A skier of mass 74.6 kg is pulled up a slope by a motordriven cable. How much work is required to pull the skier 63.3 m up a 39.0◦ slope (assumed to be frictionless) at a constant speed of 2.0 m/s? The acceleration of gravity is 9.81 m/s 2 . Answer in
asked by paula 
marh
Martina and Charlotte are sharing a pizza. The pizza is cut into eight pieces. Martina ate a quarter of the pizza. Charlotte ate three pieces. How many pieces are left?
asked by perrywood 
physics
Each vertical steel column of an office building supports a weight of 1.30 x 10^5 N and is compressed to 5.90 x 10^3 A) Find the compression in each column if a wegith of 5.50 x 10^5 N is supported. B)If the compression of each steel column is 0.0710 cm,
asked by Jonathan Camper 
physics
boy throws a penny into an empty well with an initial velocity of –2 m/s. He hears it hit the bottom 8 seconds later. About how far did the penny fall?
asked by Anonymous 
Phsyics
A skier is gliding along at 2.5m/s on horizontal, frictionless snow. He suddenly starts down a 10∘ incline. His speed at the bottom is 13m/s . What is the length of the incline? How long does it take him to reach the bottom?
asked by John 
ENGLISH
IDENTIFY THE DEGREE OF COMPARISON USED IN THE FOLLOWING SENTENCE.THE AIR IS MORE HUMID SINCE THE THUNDERSTORM PASSED THROUGH TOWN
asked by elise 
english
Snow was quickly piling up on the ground. Wind howled through the trees. Karen wrapped a blanket around her and sighed as she watched the snow through her bedroom window. 15. In this passage, you can best infer that A. Karen is at home during a snowstorm.
asked by Anonymous 
Need Help 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 Anonymous 
Science
A geologist finds a layer of rock that is made of mediumgrained sands and is porous. What type of rock did the geologist find? A. sandstone** B. conglomerate C. coquina D. limestone
asked by Anonymous 
advanced algerbra
Write the first four terms of the sequence that begins with 5000 and decays 15% with each term. What is the common ratio? I found that that common ratio is .85 but I'm confused on how yyou would get that?
asked by andie 
Organic chemistry
What kind of reaction is occurring between potassium permanganate and cyclohexene? (I.e. Combination, double displacement, etc.
asked by Hannah 
Chemistry
A 2.75 kg block of ice is heated until it completely melts. It is then heated again until it completely changes to water vapor. Is more energy required to melt the ice or to vaporize the liquid water.
asked by Morgan 
math
the product of two mixed numbers that are each between 4 and 5 is between 16 and 25. I think that is false. am I correct
asked by Missy 
Science
Which explains the greenhouse effect? A. Greenhouse gases like water vapor and carbon dioxide trap heat in the atmosphere, thereby radiating heat energy back into space. B. Greenhouse gases like water vapor and carbon dioxide release heat in the
asked by Anonymous 
Science
How do plants produce chemical weathering? A. They secrete carbon dioxide that combines with water on the rocks and dissolves the minerals in the rocks. B. They secrete chemicals that freeze the water within the cracks of the rocks and break down the
asked by Anonymous 
Science
Which type of weather is most likely produced by a cold front? A. light to moderate precipitation B. moderate to heavy precipitation C. no precipitation** D. heavy precipitation and thunderstorms
asked by Anonymous 
Physics
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.10 N is applied. A 0.440kg particle rests on a frictionless horizontal surface and is attached to the free end of the spring. The particle is displaced from the origin
asked by Anonymous 
History
What was Hammurabi's most important achievement as the ruler of Babylon? He built extensive canals, which carried water to many parts of his kingdom. He established permanent armies, which he used to control his empire. He appointed governors to rule over
asked by Britney 
math
THe area of a parallelogram is 594, and the lengths of its sides are 32 and 46. Determine, to the nearest tenth of a degree, the measure of the acute angle of the parallelogram
asked by Sue 
physics
A block and tackle with a velocity of 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate,if the effort is equal to 60N,determine the distance moved by effort, work done by the effort in lifting the load and the loss of
asked by happiness 
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 
Math
Find the exact value: cos(pi/16)cos(3pi/16)sin(pi/16)sin(3pi/16)
asked by Lala 
anthropology
What are the differences between lineages, clans, moieties, and phratries are all types of decent groups.
asked by jimmy 
Albebra
Ociel has designed a square mural that measures 10 feet on each side. Bill has also designed a square mural, but his measures y feet shorter on each side. Write an expression to represent the area of Bills mural.
asked by Anonymous 
Science
In terms of density and humidity, which conditions characterize a highpressure area? A. low density, low humidity B. high density, high humidity C. high density, low humidity** D. low density, high humidity
asked by Anonymous 
Math 201
A boundary line that is dashed is represented by the inequality symbol: ?
asked by Alex 
Physics
A lobsterman’s buoy is a solid wooden cylinder of radius r and mass M. It is weighted at one end so that it floats upright in calm sea water, having density. A passing shark tugs on the slack rope mooring the buoy to a lobster trap, pulling the buoy down
asked by Rachel 
physics
Heather and Matthew walk eastward with a speed of 0.90 m/s east. If it takes them 31 min to walk to the store, how far have they walked? Answer in units of km.
asked by Alex 
Algebra 2
Bugs made the trip at 40 miles per hour during the first hiatus.joan made the same trip at 50 miles per hour during the second hiatus how long was the trip if it took buggs 2 hours longer than it took joan
asked by Jesslyn 
Physics
Mark launches a projectile 65 degrees from the horizontal and it strikes the ground a certain distance away. For what other angle of launch at the same speed would the projectile land just as far away?
asked by Kari 
physics
Two forces of equal magnitude act on the same object. Which of the following must be true? a. The object is moving. b. The object is accelerating. c. If the object is initially at rest, it cannot remain at rest. d. The two forces form a thirdlaw pair. e.
asked by Anonymous 
physics
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.10m/s2 . At the same instant, a truck, traveling with a constant speed of 15.1m/s , overtakes and passes the
asked by david 
english
What Asthma Is 2 We know that family history contributes to susceptibility, but in most cases we don’t know what causes asthma to develop, and we don’t know how to cure asthma. You can control your asthma by knowing the warning signs of an attack,
asked by Robb4301 
chemistry
calculate the amount of carbon dioxide that could produced when the one mole of carbon is burnt in 8gms of dry oxygen
asked by dambaru 
physics
CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8
asked by Anonymous 
Science
Which explains how climate data were used as evidence to develop the theory of continental drift? A. Similar glacial deposits and sediments were found on areas of the same continent that are now thousands of miles apart. B. Different glacial deposits and
asked by Anonymous 
Science
Earthquakes occur on the earth today, so we can assume they occurred in the past. Which important geologic principle does this sentence support? A. original horizontality B. faunal succession C. superposition D. uniformitarianism**
asked by Anonymous 
Science
How would a geologist identify an igneous rock as intrusive? A. An intrusive rock has coarse grains because it cooled more slowly on the surface of the earth. B. An intrusive rock has coarse grains because it cooled more slowly beneath the surface of the
asked by Anonymous 
math
In a recent survey 5/8 of pet owners say they allow their pet to go outside. Of these, 1/3 allow their pet outside without supervision. Does 5/8*1/3 express the fraction of the pet owners surveyed that allow their pet outside without supervision? My answer
asked by Mel 
7th grade science
Can you help me with genetics questions? Directions: In each set, tell which word does not fit with the others. Then explain why you think it does not. You must mention all words. 1. Aa, Heterozygous, Hybrid, Homozygous Ans: Homozygous doesn't belong
asked by Alexis (repost) 
physics
Suppose a car is traveling at +25.0 m/s, and the driver sees a traffic light turn red. After 0.564 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 4.00 m/s2. What is the stopping distance of the car, as measured
asked by Anonymous 
S.S. Check please
2. Why were Native Americans forced to leave their lands during the 1830s? a.) settlers wanted to settle the land b.) U.S. citizens settled the land first c.) the Supreme Court ordered their removal d.) their new lands were better for farming. ****** 4.
asked by Hannah 
math
water tower with a 20 ft. sphere at top to store water. how many gallons does it hold?
asked by yOLANDA 
physics
A speeder passes a parked police car at a constant speed of 20.1 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.65 m/s 2 . How much time passes before the speeder is overtaken by the police car? Answer in units of s.
asked by Jesus 
logic and design
algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else wear tshirt endif if hungry then
asked by Jan 
math
A pool drains water at a rate of 3% every 5 minutes how many gallons of water are left after 50 minutes? How long will it take to have less then 1,000 gallons?
asked by Sarah B 
Math
true or false the product of two fractions that are each between 0 and 1 is also between 0 and 1
asked by Mel 
Science
Please could someone check these for me. 1In a series of rock layers, a geologist finds fossils of a lizardlike dinosaur and a fernlike tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish
asked by Anonymous 
math
Adam used the three fractions to make a circle graph and colored each a different color. What fraction of the graph is not colored?
asked by Tommy Rose 
physics
Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver remains in the air is
asked by Anonymous 
Physics
Suppose you have a 3 C charge at (1,0) m and a 3 C charge at (1,0) m. Find (a) the electric field at the point (0,3), and (b) the electric force on a charge of 3 nC placed at (0,3).
asked by Macy 
physics
A baseball is hit and moves initially at an angle of 35.0 to the horizontal ground with a velocity of 25.0 m/s. (a) What are the vertical and horizontal components of the initial velocity? (b) How long will the ball be in the air? (c) What is the range?
asked by axel 
Calculus
A hot air ballon lifts off the earth 300m away from an observer and rises straight up at a rate of 80m/min. At what rate is the angle of inclination of the observers line of sight increasing at the time the balloon is 300, above the ground?
asked by Chris 
Algebra
I had a question on a quiz that I just finished and I wanted to know if my answer was right. Is 4xy^=0 a function. If so, what is the domain and range? If not, name two points that prove it. I wrote that it was a function with 5 and lower as a
asked by Hutch 
physics
CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8
asked by Anonymous 
Physics Help
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 Anonymous 
college chemistry
A sample of gas has an initial volume of 5.9L at a pressure of 759mmHg. If the volume of the gas is increased to 8.4L , what will the pressure be?
asked by Daywana 
chemistry
what hybrid orbitals would be expected for the central atom for the followings a) BrF5 b) BeCl2 c) CH3Cl
asked by saima 
physics
A ball of mass M1 moves with a velocity U1, collides perfectly elastically with a stationary ball of mass M2 . After the collision, M1 and M2 move with velocities V1 and V2 respectively. Show that : V1 =(M1M2) / (M1 + M2 ) * U1 .
asked by Albert 
math
Miss Sue, is the answer that psydag give to Angel at 4:53 today correct? doesn't seem to add up
asked by Missy 
URGENT PHYSICS
Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver remains in the air is
asked by Anonymous 
Poetry
Can anyone tell me what kind of poem is "A Barred Owl"? Ex. is it a villanelle or a sonnet...? Thank you!!
asked by Jen 
7th grade science
Can you help me with genetics questions? Directions: In each set, tell which word does not fit with the others. Then explain why you think it does not. You must mention all words. 1. Aa, Heterozygous, Hybrid, Homozygous Ans: Homozygous doesn't belong
asked by Alexis 
calculus
lim x>0 (Sin^3 3x  3x^3)/(x^3) (x^4)
asked by Francis 
algebra
Help!! I am a homeschool mom who did horrible in Honors Algebra2. My daughter has done her work and I am stumped on two questions. Simplify. 6/x6+3x/x+51/(x6)(x+5) A) 3x+5/x^2x30 B) 3x^212x+29/x^2x30 C) 3x^2+6x+5/x^2x30 D) 3x^2+5/x6 Simplify
asked by Kristine 
Math
1. Sara got 10 out of 13 questions right on a test. What will she probably make on her test? A. 76% B.60% C.70% D.85% 2. What will Sara make if she got a 5 extra points? Idk how to answer number 2.. I think it's.. A for number 2
asked by Anonymous 
Science
Which explains how plants can chemically weather a rock? A. Plant roots get into cracks and secrete water, which freezes and breaks apart the rocks. B. Plant roots get into cracks, grow, and break apart the rocks. C. Plant roots get into cracks and secrete
asked by Anonymous 
2nd grade math
take a shape with 4 sides. draw a line between two vertices that do not share a side. how many shapes does that make? how many sides do they have
asked by Mythreyee 
Math
Solve the following systems of linear inequalities x+2y is less than or equal to 6 y is greater than 4x
asked by M 
chemistry
If 1500 mg of rubbing alcohol is spilled in abox that measures 4m x 2m x 3m, what is the concentration of alcohol in mg. per cubic meter if it evaporates into gas?
asked by Leslie 
Math 201
The length of a rectangle is 5 cm more than its width. What are the possible dimensions of the rectangle if the area must be at least 84 cm^2? (2 marks)
asked by Alex 
physics
A particular jet aircraft must reach a speed of 43 m/s in order to takeoff. If the acceleration of the plane is 1329 m/s2, the minimum length of the runway is Answermeters
asked by diana 
chemistry 116
What is the specific heat capacity of aluminum if a 8.4 g sample increased 21.1 C upon the addition of 159.0 J? The units are J/(g ·K). q=cpxMxT is the equation my answer i got is 401.65 is that right bec i feel that's wrong
asked by danny 
math
Three pupils John, Daniel and David contributed a total of $400 for a party. John contributed $30 more than Daniel while, David contributed three times as much as John. If David contributed $x, which one of the equations below can be used to find David's
asked by kudu 
Chemistry
Which of the following is a balanced chemical equation H2O2 → H2O + O2 2 Fe2O3 + 3 C → 4Fe + 3CO2 SO2 + O2 + 2H2O →4H2SO4 2 Mg + HCl →MgCl2 + H2 not sure
asked by stacyy09 
Algebra
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.32 cross product 10−5 watts/cm2
asked by LI 
Math
Tension wants to build a soccer field for his team. The area of the field should be 125 square feet. The width is 1/5 of the length. What are the dimensions of the field?
asked by Helen 
Math
What's the difference between one solution and infinitely many solutions?
asked by Humanoid 
English
What is the difference between symbol and symbolism?
asked by Anonymous 
algebra
Graph the equation y = 4 x + 8. How do you solve For y and x so I can graph the equation?
asked by Ruth 
Physical science
Which property of aluminium makes it suitable to be used for overhead electricity cables
asked by Rossy 
math
Two station astronauts will each perform three 8hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please
asked by math 
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 Brittany 
Math
Using this graph, find the average lengths of cellular calls for the year 2013. Year:Avg length (L) in minutes: 19992.38 20002.56 20012.74 20022.73 20032.87 20043.05 I think the answer is 4.08 minutes but I also got 3.97 so I'm not sure, can you
asked by Alex 
Physics
This deals with Projectile Motion and I would be glad if someone were to check if my answers are correct. 1. c 2. b 3. a 4. d If air resistance were to be ignored, 1.a projectile that has a horizontal velocity is a)zero b)constant c)increasing d)decreasing
asked by Jenice 
Physics 201
A person desires to reach a point that is 2.87 km from her present location and in a direction that is 47.5° 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 Anonymous 
English close reading paper
Is it appropriate to use the "we" form and "I" in the same paper?
asked by Tom 
physics
Using the following number: 26,802 In 4 significant figures, this number would be Answer. In 3 significant figures, this number would be Answer. In 2 significant figures, this number would be Answer. In 1 significant figure, this number would b
asked by diana 
math
'the accountant charged $23 for the hour of work and $23 for each for each hour after that . He earned a total of $127. How many hours did he work'
asked by Anonymous 
Chemistry
27.31 mg of NH4Cl in 1.99 ✕ 102 L of solution cation ? And Anion ? (Molarity) I found the MW to be 62.48 and I converted Mg to 0.02731g idk what's wrong
asked by Asher 
PLEASE HELP CHECK? MS. SUE ANYONE?
How is this so far? and what else should i add, i need two pages and i have only one done, due today. help? I'm doing like a journalist. I Josephine A. Walker was a slave for Harry Richardson. Every morning I had to serve him, I had to be up by 4am and was
asked by Christina 
Math
Two equilateral triangles are sitting sidebyside. The length of one side of Triangle A is 5 ft. The sides of Triangle B are 3 times as long as those of Triangle A. How long is the length of one side of Triangle B?
asked by Patricia 
Algebra
Find the following sum: 9 + 10 + 11 + ... + 87
asked by Shelby 
2nd grade math
Can all 4 sided figures be made from triangle? why?
asked by Mythreyee 
college mathematics 1
describe the graph of g(x)=f(x)+1 relitave to f(x)
asked by chris 
media
what is a trade publication? examples.
asked by k.o 
English
Hi! I made an essay please tell me what I am missed or how I did. And how can I improve it. Also does it sound good enough for a University student? btw I have a request if you can delete this essay after giving feedback because it's personal and private
asked by Marie 
algebra
Calculate: 2/3 4
asked by sika 
Physic
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 Anonymous 
Algebra
Please solve using substitution method. 2n11=m/4 n=m/3
asked by Emily 
science
In the below the results are given for the saprate mating of tomato plant what are the most probable genotype for the parents in each instance? 1.purple, cut¡Ágreen cut cut purple321, potato purple101, cut green310, potato green107 2.purple,
asked by Anonymous 
physics
You fire a cannon ball from ground level at a speed of 20.0 m/s ∠30.0 Find the time taken for the ball to hit the earth. How far will it land?
asked by axel 
college algebra
x represent the unknown value eight more than onesixth of a number
asked by Meche 
calculus
(cx)={X if 0 is less than or equal x less than or equal 10 and 0.9x if 10
asked by john 
Chemistry
Elements are constantly forming compounds, and the atoms of compounds are constantly being rearranged to form new combinations of atoms. True or false True
asked by stacyy09 
math
four friends want to equally share 2 2/3 feet of rope.What amount of rope should each friend get?Draw a picture to solve
asked by tiggres 
Math
Show each step to show how to verify the identity. cos(x + y) + cos(x  y) = 2 cos x cos y
asked by Toni 
chem
What is the specific heat capacity of aluminum if a 8.4 g sample increased 21.1 C upon the addition of 159.0 J? The units are J/(g ·K). q=cpxMxT is the equation my answer i got is 401.65 is that right bec i feel that's wrong
asked by danny 
maths contant
determine the angle of inclination 32y=9x
asked by Anonymous 
Math 201
What is the solution for 2x^27x>3? (2 marks) (Show your work)
asked by Alex 
SS
How is this so far? and what else should i add, i need two pages and i have only one done, due today. help? I Josephine A. Walker was a slave for Harry Richardson. Every morning I had to serve him, I had to be up by 4am and was unable to go to bed till
asked by Christina 
math
i have tryed this like ten times but cant get the answer can u help. 58,00 times 7.40% after u get the answer between the two multiply by 3
asked by robert 
Calc II
1) Find the point on the graph of y=x^2 where the cube has slope 5/2 2) Find the point on the graph of y=x^2 where the tangent line is parallel to the line 4x+3y=3
asked by Vince 
math
given thatvABCD is a parallelogram where A(1,2),B(4,4), and C(6,2) determine the coordinates of D using vector?
asked by peter 
Math
3{radical symbol48/3  2} how would i solve this problem
asked by Anonymous