Questions Asked on
March 11, 2016

Physics
A pool ball of mass 100g and velocity [5,4]m/s collides with a stationary pool ball of the same mass. After the collision, the pool balls have velocites [2,3]m/s and [3,1]m/s. Is the collision elastic? Explain your answer.
asked by Sam 
math
A rectangular prism is 4.8 centimeters long, 16 centimeters wide, and 14 centimeters high. What is the surface area of the rectangular prism?
asked by Anonymous 
math
if y =3, what does y=
asked by Anonymous 
Algebra 2
the gym charges 180$ for a yearly membership. there are currently 1000 members. for every 5$ increase the gym will lose 10 members. how much should the gym charge to maximize its revenue?
asked by Jake 
US HISTORY *JUST NEED CHECKED*
What foreign policy did the United States follow before entering World War 2? * Isolationsism Communism(MY ANSWER) Socialism Blitzkrieg Japan is a country made up of islands * True (MY ANSWER) False Why was Japan so interested in controlling the islands in
asked by MSTV1112 
Math
company will enclose a rectangular area of 12 comma 600 ft squared12,600 ft2 in the rear of its plant. One side will be bounded by the building and the other three sides by fencing, as shown to the right. If 320 ft320 ft of fencing will be used, what
asked by Wael 
Inorganic Chemistry
A researcher studying the nutritional value of a new candy places a 4.70gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.98 °C. If the heat capacity of the calorimeter is 39.80
asked by Michael 
Inorganic Chemistry
In a constantpressure calorimeter, 70.0 mL of 0.340 M Ba(OH)2 was added to 70.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 22.00 °C to 26.63 °C. If the solution has the same density and specific heat as water
asked by Michael 
chemistry
calculate the mass of chlorine gas contained in a 5dm3 flask at 25degrees celsuis and 98kpa pressure.
asked by sopuruchi 
math and science
1500kg motor car was travelling at 36m\s comes to rest over a distance of 40m.calculate. {a}retardation. {b}an average force that brings the car to rest
asked by prisca 
Inorganic Chemistry
In a constantpressure calorimeter, 70.0 mL of 0.340 M Ba(OH)2 was added to 70.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 22.00 °C to 26.63 °C. If the solution has the same density and specific heat as water
asked by Michael 
Math
A woman bought some 13 cent stamps and some 8 cent stamps at the posg office. She spent exactly 1 dollar. How many of each stamp could she have bought?
asked by Joe 
maths
300 mens were engaged to complete a job in a certain number of days. but due to another assignment 15 men dropped the 2nd day, 15 more men dropped the 3rd day and so on.it takes 15 more days to finish the work now. find the number of days in which the work
asked by hawwa 
maths
ria took a wire of length 44cm and bend it into a shape of circle find the radius of that circle also find its area if the same wire is bent into the shaape of square what will be the length of each of its side which figure enclose more area
asked by abha 
MATH
In Triangle ABC, medians BE and CD are produced respectively to points X and Y such that CD=DX and BE=EY as shown in the figure. Show that the points X, A and Y are collinear. Also show that A is the mid point of XY
asked by PRIYA 
Enrichment
How does the BhutanChina treaty(about the border dispute) affect the world? Please Help!
asked by CiCi 
chemistry
At 25 °C, the density of a 60.0% (m/m) solution of sucrose, C12H22O11, in water is 1.29 g/mL. What is the molarity of this solution?
asked by Anonymous 
life orientation
Propose 6 practical actions that you can take to address human rights violations of xenophobia in your community
asked by kyle 
math
Jonah has $50,000 in a savings account that earns 10.6% annually. The interest is not compounded. How much will he have in 6 months?
asked by Anonymous 
Check answers?
Your elbow and knee are examples of ligaments. joints.**** cartilage. angles. The muscular system allows our bones to strengthen. contract. lengthen. move.**** This muscle helps to transport blood to and from the heart. smooth muscle cardiac muscle****
asked by MsHemmoPenguin 
body system
7.)During the exchange of air in your lungs, your body seeks to keep oxygen and release ____________which will then exit your body A.)Microorganisms B.)Carbon Dioxide C.)Plasma D.)
asked by #FreeGucci 
Chemistry DrBob222
Please check. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea level). Under
asked by Student 
Chemistry
A calorimeter contains 30.0 mL of water at 15.0 C. When 1.50 g of X (a substance with a molar mas of 46.0g/ mol is added, it dissolves via the reaction X (s) + H2O (l) > X (aq) and the temperature of the solution increases to 26.5 C. Calculate the
asked by Student 
math
The length of a rectangle is three more than twice its width. Its perimeter is 24 inches. Find its dimensions length and width.
asked by Ken 
physics
At what height above Earth's surface is the gravitational acceleration reduced from its sealevel value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sealevel value by 2.0%? At what height above Earth's
asked by please help 
health
Muscles that move the leg are located in the ________ region. A. Thigh B. Hip C. Back D. Foot B?
asked by Martin1162 
Geometry
A triangular pyramid is defined by the points .The pyramid is then reflected over the xzplane. The reflected image is then translated 3 units back, 2 units left, and 4 units up. Write the general rule you use for the reflection. Show the results of your
asked by Jessica 
Art Please Ms.Sue Help
1.How do landscape paintings convey the values and ideas of Chinese culture? A.Landscape paintings show chaotic, unhappy culture. B.Landscape paintings reveal the importance of natural history to the Chinese. C.Landscape paintings show that Chinese desire
asked by Student 
health
What is the primary function of the skeletal muscle? A. Heating the body B. Pumping blood to the rest of the body C. Protecting the body from harm D. Contraction C?
asked by Martin1162 
Chemistry
Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea level). Under those
asked by Student 
Geometry(so lost)
Given ∆ABC≅∆PQR,m (angle)B=3v+4,and m(angle)Q=8v6,find m(angle)B and m(angle)Q (quick question: what would be the symbol for "angle" on here?) How do I solve this???? STEPBYSTEP would be amazing! Thank you.
asked by Mirabella♥ 
health
Approximately________ of the total blood volume is in the veins at any given time. A. 30% B. 50% C. 70% D. 90% C?
asked by Martin1162 
Art Please Ms.Sue
Which two cultures use creatures to protect or transport humans after death? America (bald eagle) and Spain (bull) Egypt (the animalheaded sons of Horus) and China (the dragon)***** Egypt (the jackal) and China (the lion) Mayans (the crow) and Greeks (the
asked by Student 
health
The cardiovascular system is also known as the ________. A. Blood pathway system B. Heart gateway system C. Circulatory system D. Vascular crossings system A?
asked by Martin1162 
health
The heart is a _____ that provides the force necessary to circulate the blood to all the tissues in the body. A. skeletal pump B. autonomous pump C. muscular pump D. systemic pump C?
asked by Martin1162 
health
The brain is divided into the _______. A. Cerebrum and cerebellum only B. Cerebellum and brain stem only C. Brain stem, cerebrum and diencephalons only D. Brain stem, cerebellum, cerebrum and diencephalons D?
asked by Martin1162 
2nd grade math
7+5=8+ What number makes this equation true
asked by Milan 
Are all math answers correct?
1. What are all the possibly ways to classify a rectangle? A. quadrilateral, parallelogram, rectangle *** ?? B. parallelogram, rectangle (Or this…) C. quadrilateral, rectangle 2. Which property is not a characteristic of a parallelogram? A. Opposite
asked by Petra 
World History 6th Grade Ancient China NEED HELP!!!
Why did the ancient Chinese drink tea?
asked by Aelia 
math
Given the data set (5, 9), (13, 12), (23, 16), which of the following equations best represents a line of best fit? y = three fourthsx − 7 y = four fifthsx + 7 y = three over twox + 7 y = two thirdsx − 7
asked by kaitlyn 
Math
Sally has a bag of marbles. She has 3 different colored marbles in her bag – orange, black, and purple. If the probability of getting orange is 3/10 and the probability of black is 1/5. What is the probability of getting purple? Explain your reasoning.
asked by Louise 
math
draws a card from a standard deck of 52 cards. She replaces the card and draws a second card. What is the probability that she draws a heart and then a spade?
asked by y 
political science
In the "Campaigns and Elections By the Numbers" box, the book lists the number of people that filed to run for President. It says 167 filed as Republicans, 83 filed as Democrats, and 1 filed under the _______ Party. A.Libertarian B.Green C.Jedi D.Vulcan
asked by ryan 
Yo please answer this!
Order these from least to greatest importance. Tea and Clock and Silk making and Porcelain and Gunpowder
asked by Aelia 
Biology
Why do we use dna primer for PCR but RNA primer for dna polymerase in cells
asked by asdasdfasdf 
political science
the Presidential Campaign has three phases. What is the second phase? A.General Election B.Declaring Candidacy C.Party Conventions D. Nominating Process
asked by ryan 
political science
I have no clue on this one!!!! Bill Clinton's focus on domestic issues, what was NOT part of his "E2M2" campaign? A.Medicare B.Economy C.Education D.Energy
asked by ryan 
chem
The heat of combustion of methane is 213 kcal/mol. How many kcal of energy are released when 22.5 moles of CH4 burns in an excess of oxygen gas?
asked by banana 
History
1.)Which best describes the purpose of the Electoral College in the United States? A.)chooses the winner of an election if the popular vote is disputed B.)reduces the number of smear campaigns among candidates C.)publishes the results from each state’s
asked by #FreeGucci 
Statistics
In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 25 patients using the drug is selected. Find the mean and standard deviation of patients having a mild side effect. Mean = np =
asked by Ray 
Science
1.Explain the process of succession. 2.Describe how changes in an ecosystem can affect organisms that live there. 3.Describe the amount of time needed for ecosystem recovery
asked by Tessa 
History
W4.)which section of Andrew Jackson’s inaugural address best proves that he supported the rights of state governments? A. 1 B. 2** C. 3 D. 4 b
asked by #FreeGucci 
History
2.)Andrew Jackson did not support a. limited national government b. spreading of slavery to the frontier c. federal funds for internal improvements d. a strict interpretation of the U.S. Constituti c
asked by #FreeGucci 
chemestry
A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157g of the compound produced 0.123g carbon dioxide and 0.0310g water. In another experiment, it is found that 0.103g of the compound produces 0.0230g ammonia. What is the
asked by salz 
political science
Before President Obama, when was the last time a Senator successfully ran for President? A.1824 B.1960 C.Obama was the first Senator to ever win D.1910
asked by ryan 
ChemistryDrBob222
I know I pored this already, but I for it to mention the assumption. See below. A calorimeter contains 30.0 mL of water at 15.0 C. When 1.50 g of X (a substance with a molar mas of 46.0g/ mol is added, it dissolves via the reaction X (s) + H2O (l) > X
asked by Student 
History
4.)which section of Andrew Jackson’s inaugural address best proves that he supported the rights of state governments? A. 1 B. 2*** C. 3 D. 4 B?
asked by #FreeGucci 
math
Analyze It Questions: 1. Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? Why? (At least 3 sentences.) 2. Since heat touching the surface of an ice cube causes it to melt, is it
asked by cheyann 
Science
1.Explain the process of succession. 2.Describe how changes in an ecosystem can affect organisms that live there. 3.Describe the amount of time needed for ecosystem recovery If anyone would help me that would be great, websites, answers, anything at all.
asked by Alec 
math/geometry PLEASE HELP ME!
Find the measure of the complement and the supplement of an angle with measure 50 degrees A. complement, 130 degrees; supplement, 40 degrees B. complement, 40 degrees; supplement, 40 degrees
asked by keykat 
Art
setting up a photograph to control the lighting, the subjects position, and the angle of the photograph is an example of which artistic technique A.) improvisation •• B.) staging C.) photo editing d.) cropping
asked by Help! 
Art
in order to capture a rare moment on film, a photographer must most importantly possess which compositional skill? Gentleness Wisdom Enthusiasm Patience••
asked by Help! 
Algebra
factor a^2+10a+24 t^2+4t45
asked by Will 
Algebra
Suppose that the maximum weight that a certain type of rectangular beam can support varies inversely as its length and jointly as its width and the square of its height. Suppose also that a beam 6 inches wide, 2 inches high, and 12 feet long can support a
asked by Marie 
Art
how has the availability of a camera phone allowed the average citizen to help news outlets? A. Citizens can take over resporting responsibility via Camera photo B. Citizens can take photos that are more accurate than the avetage photojournalist C.
asked by Help! 
math
3. How does increasing the size of an object affect its volume to surface area ratio?
asked by cheyann 
English Essay
Ms Sue can u check my essay! Topic sentence: Getting a job as a nursing assistant involved several important steps Getting a job as a nursing assistant involves several important steps. First, I researched the facility for the the interview through their
asked by Briana 
math
a baseball field has four bases that form the shape of a quadrilateral. If someone invented a new game similar to baseball that had an extra base in the field, what type of polygon would the bases form? A. pentagon
asked by keykat 
Please help
imagery, connotation, and denotation. explain how poets use these elements to contribute to tone in a poem
asked by Anonymous 
Health
A respiratory disorder in which the bronchi become inflamed and thick mucus in produced is called Asthma** Bronchitis Cancer Addiction Let me know if I'm right or wrong. Thanks
asked by Tyler 
math
5x4y=7 3x3y=21 (linear combination method)
asked by Jas 
Physical education
the male reproductive cells are called 1. ova**** 2. teste 3 sperm 4 ovaries
asked by seahawks 
Art
which member of an advertising team would most likely study date to learn more about the target audience? Graphic designer illustrator Photographer Artistic director ••
asked by Help! 
Science
water is a(n) factor in all ecosystems that all living things requires?
asked by ...... 
Math
Differentiate 2 pie r .i.e circumference of a circle
asked by Afeez 
Science
2.Why are biologists concerned about ecosystem disruption? 1.Explain the process of succession. Succession is a natural change in the area that results in one group of plants replacing a group before. for #1 that is all I have so if you could give me a
asked by Katherine P 
math please be honest
similar poligons are ___ different shapes. A. always B. sometimes
asked by heidi/KeyKat 
french
in French how do you say which i really liked
asked by french 
math
which pair of transformations to the figure shown below would produce an image that is on top of the original A. a translation to the right and a reflection over the vertical line of reflection shown. B. a translation down and a reflection over the
asked by heidi/KeyKat 
french
sometimes in french
asked by HELP 
Math
Suppose that the number of cars manufactured at an automobile plant varies jointly as the number of workers and the time they work. If 340 workers can produce 204 cars in 4 hours, find the number of workers that can produce 180 cars in 3 hours.
asked by Anonymous 
Chemistry
Is the same reactant always the limiting reactant?
asked by Anonymous 
math
Solve using the addition and multiplication principles. 6minus−6x less than or equals¡Ü 4minus−5x what is the solution set
asked by art institute 
math
which pair of transformations to the figure shown below would produce an image that is on top of the original A. a translation to the right and a reflection over the vertical line of reflection shown. B. a translation down and a reflection over the
asked by KeyKat 
Mathematics
Suppose that the maximum weight that a certain type of rectangular beam can support varies inversely as its length and jointly as its width and the square of its height. Suppose also that a beam 4 inches wide, 3 inches high, and 18 feet long can support a
asked by Anonymous 
World History
What was the purpose of porcelain to the ancient Chinese yo?
asked by Aeliayo 
Math
Andrew and Daniel recently took part in a marathon. After they had finished, they noticed that Andrew finished ahead of twice as many runners as finished ahead of Daniel, and that Daniel finished ahead of 1.5 times as many runners as finished ahead of
asked by Amitabha 
math
a new statue with a circular base is being unveiled. The statue's base has a radius of 8 ft. What is the area of the base? Round to the nearest whole number. Use 3.14 for p.
asked by todd 
General Chemistry
Carbonic acid forms when carbon dioxide dissolves in water. A typical can of soda contains a 0.120 M solution of CO2. Assuming that all dissolved CO2 is present as carbonic acid, and that no other substances dissolved in solution affect the pH, what is the
asked by Erik 
Algebra
The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the car's speed.Suppose that 400 pounds of force keeps a 1600pound car from skidding on a curve of
asked by Lisa 
Math
An object is launched at 9.8 meters per second from a 73.5meter tall platform. The object's height s (in meters) after t seconds is given by the equation s(t)= 4.9t(4.9t)  9.8t = 73.5. When does the object strike the ground? I can't figure out how to
asked by Joe 
English
Choose the sentence that contains no comma errors. A) The book, that I borrowed from Elizabeth last week was excellent. B) About four thousand years ago, Stonehenge, was a center of worship. C) Alice Jones lived at 15, Cedar Street NE, Colorado Springs
asked by Marc 
Math
Can a triangle be formed with angles having measures of 10°, 60°, and 30°? Explain
asked by Anonymous 
Math
What cross sections might you see when a plane intersects a sphere that you would not see when a plane intersects pyramid or a prism?
asked by Anonymous 
Math
Melanie wants to put ribbon around the circumference of a circular section of the city park. Ribbon comes in rolls of 40 feet. The radius of the section of the park is 100 feet. How many rolls of ribbon should Melanie buy? Equation for circumference:
asked by Anonymous 
math
A stained glass window is shaped like a semicircle. The bottom edge of the window is 36 inches long. What is the area of the stained glass window? Round your answer to the nearest hundredth. (2 pt) Draw and label the window: Answer: _____________
asked by Anonymous 
Chemistry
Can you determine the limiting reactant just by comparing the masses of the reactants?
asked by Anonymous 
Math
A bakery offers a small circular cake with a diameter of 8 inches. It also offers a large circular cake with a diameter of 24 inches. Does the top of the large cake have three times the area of that of the small cake? If not, how much greater is its area?
asked by Anonymous 
English
After the basketball game the students had a dance at the school. . How should the sentence be correctly punctuated? A) Add a comma after game. B) Add a comma after dance. Reactivate C) Change the period to a question mark. Reactivate D) Add an apostrophe
asked by Marc 
English
To forget them, to pass lightly over their wrongs, and to chime in with the popular theme, would be treason most scandalous. . . Which word is most similar to how chime in is used here? Agree Create Harmonize Resound I have no idea because chime in means
asked by Henry 
Math
Suppose that the amount of time it takes to build a highway varies directly with the length of the highway and inversely with the number of workers. Suppose also that it takes 100 workers 6 weeks to build 4 miles of highway. How long will it take 160
asked by Anonymous 
English
I hear the mournful wail of millions, whose chains, heavy and grievous yesterday, are today rendered more intolerable by the jubilant shouts that reach them. Which definition of rendered is most likely suited for this line? Caused to be a certain nature
asked by Henry 
ChemistryDrBob222
A 1.0 L ball containing Ar at 5 atm is connected to a 10.0 L ball containing N2 at 2atm. A)Calculate the partial pressures and mole fractions of Ar and N2 after the valve is opened and the gases are allowed to mix (they fill the balls on both sides). My
asked by Student 
Algebra
Suppose that Y varies directly with X, and Y=16 when X=10. (a) Write a direct equation that relates X and Y Equation: (b) Find Y when X=15 Y=
asked by Anonymous 
English
Help I have to circle C if the sentences are an example of correct pronoun agreement and circle N if they are not 1. Those who saw the play told us he was impressed. C or N 2. After I walk two miles, my leg hurts. C or N 3. Before you take exam 4, you
asked by Anonymous 
English
How does the media create a single ideal body image that readers and viewers should aspire to? What is the effect of this image?
asked by Anonymous 
Business math
how long will it take 2,000 to grow to 3,000 if the interest rate used is 6% compounded semiannually? answer to the nearest halfyear. thank you!
asked by sue 
English
1. Put new sentences into the mailbox like in the example. 2. Put new sentences into the mailbox as in the example.  Which one do we have to use, 'like' or 'as'? 3. Put the proper be verb into each blank. 4. Put the proper be verb in each
asked by rfvv 
English
While Sara was traveling in England; she met an interesting old man. . Choose the answer that is the most effective substitute for the underlined part of the sentence. If no substitute is necessary, choose ‘Leave as is.’ A) in England. She met B) in
asked by Marc 
English
What is different in middle school compared with elementary school? In middle school, we wear a school uniform, we have different teachers for for each subject, and we don't stay with our homeroom teacher all day.  Are the question
asked by rfvv 
English
How does the author arrange this passage? A) He uses dialogue in the first half to express the confusion over the phrase "Don't give up the ship." He uses a rhyming poem in the second half to explain the phrase's source. B) He uses dialogue in the first
asked by Marc 
ChemistryDrBob222
A 1.0 L ball containing Ar at 5 atm is connected to a 10.0 L ball containing N2 at 2atm. A)Calculate the partial pressures and mole fractions of Ar and N2 after the valve is opened and the gases are allowed to mix (they fill the balls on both sides). My
asked by Nevaeh 
Science
The pH of a 0.10M solution of caffeine is 11.16. Determine Kb for caffeine from these data: C8H10N4O2(aq)+H2O(l) ⇌ C8H10N4O2H+(aq)+OH−(aq)
asked by Anonymous 
Science ap chem
For which of the following solutions must we consider the ionization of water when calculating the pH or pOH? (a) 3 × 10−8 M HNO3 (b) 0.10 g HCl in 1.0 L of solution (c) 0.00080 g NaOH in 0.50 L of solution (d) 1 × 10−7 M Ca(OH)2 (e) 0.0245 M KNO3
asked by Anonymous 
English
There are different teachers for each subject.  Q1. How do you pronounce "subject." In the second syllable, is it pronounced /i/ or/e/? Q2. What is the part of speech of 'for each subject'? Is it an adjective phrase or an advervial
asked by rfvv 
English
In Scotland and Northern Ireland, is the contracted form 'amn't' used? In a book, I read such a story? Is it right?
asked by rfvv 
Physics
A bomb is dropped from an airplane travelling horizontally with a speed of 300mph. If the airplane is 10000 ft above the ground, how far from the target must it be released? Use g = 32 ft/s.s Express your answer in miles.
asked by Bentong 
Physics
A motorcycle stunt rider rides off the edge of a cliff. Just at the edge his velocity is horizontal, with magnitude of 9 m/s. Find the motorcycle's position from the edge of the cliff afyer 0.5 s. Use g = 9.8 m/s.s
asked by Bentong 
Physics
A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? Use g = 32 ft/s.s
asked by Ben 
English
1. Middle school is the same. 2. Elementary school is the same. 3. Middle school is not the same as elementary school. 4. Middle school is different from elementary school.  In each sentence, Is 'same' an adjective or a pronoun? #3 is the
asked by rfvv 
Statistics
Suppose you draw a card from a deck (with replacement) 10 times in a row. What is the probability that you get exactly 3 hearts? Round your answer to 3 decimal places.
asked by Sara 
Statistics
In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 10% of the people in this sample had pinworm but the margin of error for the population estimate was too large. They want an estimate that is in error by no more than 1.5
asked by Sara 
English
1. This is my homeroom teacher, Mr. Seo. He is a Chinese letters teacher. He is very generous. 2. This is my homeroom teacher, Mr. Choe. He is a M.E. teacher. He is strict. 3. This is my homeroom teacher, Mr. Choe. He is a ME teache. He is strict. 4. This
asked by rfvv 
Science
When an object and screen are separate d by 1m distance. when a convex lens is place d at 30 cm from the object it forms a clear image then the image distance is?
asked by Ravi 
Physics
At a busy intersection a 1460kg car traveling west with a speed of 12 m/s collides headon with a minivan traveling east with a speed of 9.4 m/s. The cars stick together and move with an initial velocity of 1.5 m/s to the east after the collision. What is
asked by Alana 
Math
3^2 / 3 * 39% of 36 * 104 = ?
asked by Valentinagettingmarriedtommorow 
physics
a box of mass 10kg is at rest on a horizontal plane.a force of 20N is applied to it at 30 degrees to the plane.assuming there no frictional force between the box and the plane,calculate the acceleration of the box.
asked by Misheck 
Math
One number is 10 less than twice a second number.Find a pair of such numbers so that their product is as small as possible. x10 2x 2x(x10) 2x^220x (20/2(2))=5 2(5)^220(5) 50100=50 I think I am really lost
asked by Barb 
English
1. Wrie down your woriries and work in pairs to comfort/console each other by using the model dialogue in Part A.  Can we use both verbs, comfort and console in this sentence? 2.I am worried about my brother who is into computer games. Why
asked by rfvv 
Physics
How much work does it take for the average person (Weight = 700 N) to climb a 10story tall building (consider each story to be about 3 m)? What fraction is this of the energy in a typical candy bar? (Ecandy bar = 250 Calories and 1 Calorie = 4186 Joules)
asked by Janiqua 
Math
c/45=4 Pleaze help solve this Im really unsure.
asked by LOVE 
Geography,history,maths,english,life orientation,s
Is it possible to study meteorology among those subjects?
asked by Hephney 
PHYSICS
A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. How long after it is fired will the target be hit? Use g = 32 ft/s.s Express your answer in seconds.
asked by Jhun Sanchez 
Science
A ball thrown vertically upward has a speed of 5.0 m/s at a height of 3.0m. The mass of the ball is 1.2 kg. Find its mechanical energy
asked by Karl 
English
1. I'm worried about my new school. Why don't you join a club? Why don't you make new friends? Why don't you talk with your homeroom teacher? Why don't you talk with the school counselor? Why don't you talk with the counseling teacher?  Are they
asked by rfvv 
Calculus
Find the specific solution of the differential equation dy/dx = 4y/x^2 with condition y(−4) = e. y equals negative 1 minus 4 divided by x
asked by nan 
Calculus
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=k(TA), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room
asked by nan 
Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15
asked by nan 
Calculus
Which of the following is the general solution of the differential equation dy/dx = 2x/y? y2 = x2 + C y2 = 2x2 + C
asked by nan 
Calculus
Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval and please explain, using a graph of f(x), what the Riemann sum represents. My cousin needs help
asked by Adrianna 
Calculus
Can someone help and express the given integral as the limit of a Riemann sum but do not evaluate: the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.
asked by Sammy N. 
Calculus
Hi it's me again I need help with this too and I promise to never use this site again! I feel so ashamed for asking :( Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.The answer has to have the
asked by Adrianna 
MathsGeometry(Loci)
A port has two radar stations at P and Q which are 20 km apart.The radar at P is set to a range of 20 km,whilst the radar at Q is set to a range of 15 km. a)draw a scale diagram to show the above information b)Shade the region in which a ship must be
asked by Ragi 
Health
1.) call 911 for A.) hypothermia *** B.) a muscle strain C.) a sprained ankle D.) a headache 2.) a joint that is twisted or overstressed and one or more of the bones that normally meet at that joint are displaced should be treated as a A.) sprain*** B.)
asked by Anonymous 
Algebra
One number is 10 less than twice a second number. Find a pair of such numbers so that their product is as small as possible. I came up with 15 and 5 and those are incorrect
asked by Barb