Questions Asked on
March 21, 2016

Physics
A 5kg block is being pulled on a horizontal frictionless surface. The tension in the string is 30N. If the block has an initial speed of 2m/s, what is the speed after moving 10 meters? Please help!Thanks
asked by Donna 
physics
A 5 kg block is being pulled on a frictionless surface by a string at an angle of 30o to the horizontal. The tension in the string is 30 N. What is the total work done on the block as it moves a distance of 10 m? Thank you!
asked by Donna 
Maths lit,life science,agriculture,geograph
Plzzz help me which carree can i choose?
asked by Pat 
math
How can I change 33(1/3) percent into fraction? I've done this so far: Change 1/3 into decimal, therefore =0.33 =33.33 TO change into fraction I have to divide by 100 0.33/100? Answer is 1/3 But i don't know how..?
asked by Jonny 
Biology i need your help
list the risks of calcium(Ca) for our health.
asked by Yaekob 
English
1. Math is complex but useful. 2. Music is not only easy but also interesting. 3. Social studies is informative as well as interesting. 4. Music is not boring but exciting. 5. Technical arts is not only useful but also informative. 6. Chinese characters is
asked by rfvv 
calculus
the vector function r(t)=< 5 sin t, 3 sec t > , represents the position of a particle at time t. find the velocity v (t) and acceleration a (t). I don't know how to solve it without the t given. Please help
asked by Danny 
Algebra
Tɨċҡɛts tօ a ʍɨɖɖʟɛ sċɦօօʟ sօċċɛʀ ɢaʍɛ ċօsts $4 ʄօʀ ċɦɨʟɖʀɛռ aռɖ $5 ʄօʀ aɖʊʟts . tɦɛ tօtaʟ ʀɛʋɛռʊɛ ʄʀօʍ tɦɛ ʀɨċҡɛts sօʟɖ աas $955. Tɦɛʀɛ աas 220 tօtaʟ tɨċҡɛts sօʟɖ .
asked by Jess 
physical sciences, Life sciences, geography and Mathematics
which jobs are related to these subjects?
asked by lihle 
MATH_2016
For the geometric sequence, 100,50,25,12.5, find the next two terms and the general term.
asked by Anonymous666_2 
please help my physics
A child of mass 40kg jumps off a wall and hits the ground at 4m/s.He bends his knees and stops in 1s.Calculate the force required to slow him down.How would this force be d/t if he didn't bend his knees and stopped in 0.1s?
asked by yaekob 
MATH_2016ii
A boy was building up his collection of marbles.He decided to increase his collection by 12 a week.After 13 weeks he had 161 marbles. (i) How many marbles did he have after 4 weeks? (ii) After how many complete weeks will he reach his target of 809
asked by Anonymous666_3 
computer programing
What are the differences between fields, records and files? Need help trying to figure this out as what I can think of is just little as this So  a field is a SUBSET of a record; a record in turn is a SUBSET of a file, and a file is a subset of a database
asked by Poohboi23 
Linear Algebra
Let T be a linear operator on R2 defined as follows on the standard basis of R2. T(1, 0) = (3, 2), T(0, 1) = (−1, 4). Find T(9, 4).
asked by Winston 
question !!!
sir steve have been looking for that book you said i should buy over the net the whol,night to get,the raw file study them but i could not see can you direct me to,a,link
asked by collins 
chemistry
A 0.109g sample of a pure gaseous compound occupies 112ml at 100degrees and 750torr: what is the molecular weight of the compound. ANS=(30.2g,mol). Please I need the solution
asked by charles 
English grammar
1.Honour or reputation (is,are)dearer than life. Which of the two words is the most appropriate?
asked by R 
Curriculum Development
Rosa doesn't want to finger paint. She is afraid she will get dirty. Ms. Moore should NOT: A. allow Rosa to stand by and simply observe the other children. B. invite Rosa to soap paint instead C. insist that she try it since Rosa can wash when finished. D.
asked by Angy 
PHYSICS
Kinetic Energy and the Work/Energy Theorem: 1.) How much kinetic energy does a 700gram baseball have that is travelling at 20 m/s? What would be the kinetic energy if you doubled the mass? What would be the kinetic energy if you doubled the velocity?
asked by S.A 
English
1. He paid attention to the elderly people. 2. He got attention to the elderly people. 3. He got attention from the elderly people. 4. He drew attention to the elderly people. 5. He drew attention from the elderly people. =========================== Which
asked by rfvv 
Maths
The angle of a sector of a circle with radius 42cm is 120 degree.if the sector is cut out and used to make a cone,what is the curved surface area of the cone?
asked by Bright ulubi 
English
1. All the lights went out and we were left in the dark. 2. All the lights went out and we were left in the darkness. 3. All the lights went out and we were left in dark. 4. All the lights went out and we were left in darkness. ============== Which
asked by rfvv 
STATISTICS
A multiplechoice quiz has 15 questions, each with 4 possible answers of which only 1 is the correct answer. What is the probability that a student gets exactly 8 correct answers?
asked by NARUTO 
STATISTICS
A multiplechoice quiz has 15 questions, each with 4 possible answers of which only 1 is the correct answer. What is the probability that a student gets at least 1 correct answer?
asked by NARUTO 
STATISTICS
In a certain city district, the need for money to buy drugs is given as the reason for 65% of all thefts. What is the probability that exactly 2 of the next 4 theft cases reported in this district resulted from the need for money to buy drugs?
asked by NARUTO 
STATISTICS
Suppose that airplane engines operate independently in flight and fail with probability 1/5. Assuming that a plane makes a safe flight if at least onehalf of its engines run, what is the probability that 4engine plane has a successful flight?
asked by NARUTO 
STATISTICS
A store owner complains that, on the average, 3 bottles per case of a certain brand of softdrink are underfilled. Assuming this is correct, find the probability that a randomly chosen case of this drink will contain at least 4 underfilled bottles.
asked by NARUTO 
STATISTICS
On the average, 7 people per hour use an express teller machine situated inside a commercial complex. What is the probability that, from 3:004:00pm on Friday, exactly 7 people will use the teller machine?
asked by NARUTO 
Math
If 1 < x < 9/8, which is bigger, ∛3x or √2x.
asked by Lance 
STATISTICS
On the average, 6 people per hour use an express teller machine situated inside a commercial complex. What is the probability that, from 3:004:00pm on Friday, at most 4 people will use the machine?
asked by NARUTO 
STATISTICS
A coin is tossed 3 times and let X be the number of heads appearing. The probability that 1 head will appear iS?
asked by NARUTO 
STATISTICS
A coin is tossed 4 times, the probability that all heads and all tails will appear is??
asked by NARUTO 
STATISTICS
The probability that a certain production process will produce a defective part is 0.20. If a box contains 12 parts, the probability that it will contain 6 defective parts is?
asked by NARUTO 
STATISTICS
The probability that a certain production process will produce a defective part is 0.20. If a box contains 12 parts, the probability that there will be 6 or 7 defective parts is ??
asked by NARUTO 
STATISTICS
A math teacher observes that on the average 3 students came to their 89AM class late. The probability 5 students will be late in their 89AM class is ???
asked by NARUTO 
STATISTICS
A math teacher observes that on the average 3 students came to their 89AM class late. The probability 5 students will be late in their 89AM class is ????
asked by NARUTO 
STATISTICS
A math teacher observes that on the average 3 students came to their 89AM class late. The probability 5 students will be late in their 89AM class is ???
asked by NARUTO 
Math
The area of a rectangular garden is given by the trinomial x^2+x30. What are the possible dimensions of the rectangle? Use factoring. A)(x6) and (x5)* B)(x+6) and (x5) C)(x+6) and (x+5) B)(x6) and (x+5)
asked by Evan 
Maths
Find the equation of a straight line whuch passes through the points (2,3) and (1,4)
asked by Bright ulubi 
Whats the answer
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. 211x^28x+6x^2. A) 5x^28x+2; quadratic trinomial B) 5x^28x; quadratic binomial C) 6x^28x2; cubic polynomial D) 8x+2; cubic trinomial
asked by Evan 
Physics
In a water park, people walk a distance of 20 meters up an inclined ramp before getting on a water slide. If the spot from where they start sliding down is located 7 meters above the water’s surface, calculate the angle of the ramp with the horizontal
asked by Adrian Watkins 
Trigonometry
Sin a cos a(tan a+cot a)
asked by Alip 
math
Your fav store is having a sale. Would you prefer to get a $10 off or a 10% off coupon? EXPLAIN PLEASE.
asked by help!! 
geom
If you have 100 feet of fence, which measurements would give you the largest area?
asked by kristina 
Algebra
a spinner used for a game is divided into sections: yellow, green, and orange. Janie spins the spinner 20 times. The spinner lands on green 8 times. What is the experimental probability that the spinner does not land on green?
asked by Crystal 
Chemistry
A student used 5.06g of copper sulphate pentahydrate and salicyclic acid in the performance of the experiment. The student recovered 3.094g of salicyclic acid and 2.146g of copper sulphate pentahydrate. What is wrong with the student's result? How might
asked by Tolu 
chemistry
(7 points) 1. The reaction that you just witnessed in while doing your titration was: HCl + NaOH H2O + NaCl. This equation is balanced. Your unknown solutions contained HCl solutions of unknown concentrations, and your titrant was a 0.75 M solution of
asked by kat 
Math Help
What is the sum or difference? A)7y^5* B)30y^5 C)30y^10 D)7y^10
asked by Evan 
philosophy 1290
2. In 2004 Z is having a conversation with his friend X and X’s wife Y. Y is a U.S. citizen and a ‘Bushy’ (a supporter of George W. Bush). She is planning on voting for Bush in the upcoming presidential election. Z and X (both are Canadian citizens,
asked by sisikeri 
Physics
A transparent photographic slide is placed in front of a converging lens with a focal length of 2.41 cm. An image of the slide is formed 13.0 cm from the slide. (a) How far is the lens from the slide if the image is real? (Enter your answers from smallest
asked by Deaven 
Pre Algebra
6. Given the function rule f(x)=x^23x+2, what is the output of f(2)? A. 8 B. 0 C. 4 D. 12 7. Suppose you earn $15 for each car you wash. Which function describes the relationship between your total earnings E and and the number of cars you wash C? A.
asked by Summer 
accounting
A business has a rate of return of seven times. At one time the business had an average stock of sh 142,000. The trade discounts allowed was 33.3% of all selling prices to retailers of gross profit. Calculate; (a) cost of goods sold (b) gross profit (c)
asked by Mesh 
Pre Algebra
Describe the speed of the remotecontrol car over time. A. The speed of the car decreases from 4 mi/h to 2 mi/h in the first 3 seconds, increases to 5 mi/h in the next 2 seconds, and then remains at 5 mi/h for the last 5 seconds. B. The speed of the car
asked by Summer 
Physics
A 5 kg block is being pulled on a frictionless surface by a string at an angle of 30o to the horizontal. The tension in the string is 30 N. What is the total work done on the block as it moves a distance of 10 m?
asked by Danny 
Math
Shelly is working 250 math problems and she wants to finish in 6 days. If she works the same number of problems each day for 5 days how many problems will she have left to work on day 6?
asked by Valerie 
health
What is the best activity to do immediately after playing tennis? a.Drink plenty of juice and sit in the shade to cool your body down. b.Stretch the leg muscles by bouncing to reach as far as you can each time. c.Stretch your leg muscles by slowly bending
asked by im new here 
maths
if a vector A has a magnitude 6 and another has a magnitude 7 with an angle 120 in between ,what is its cross product?
asked by Anonymous 
pre Algebra
Do the data in the table represent a linear function? If so, write a rule for the function. x –3 –2 –1 0 1 y 1 –2 –5 –8 –11 (1 point) yes; y = –3x – 8 yes; y = 1/3x – 8 yes; y = 1/3x + 8 yes; y = 3x + 8
asked by Summer 
child daycare
When incorporating a business, which one of the following is not a major step to take? A. Filing your employee policies with the proper state agency B. Holding an incorporator's meeting C. Preparation of bylaws D. Preparation of articles of incorporation
asked by Anonymous 
Trigonometry
A rocket is launched from a tower that is 200 feet high at 1000ft/sec at 48°. How far does the rocket travel?
asked by Alline 
Physics
Find the minimum stopping distance for a car moving at 108km/h if the coefficient of static friction between the tires and road is 0.9 I really don't understand pls helppp
asked by Amelie 
Physics helllppp
8] Find the minimum stopping distance for a car moving at 108km/h if the coefficient of static friction between the tires and road is a) 0.9
asked by Amelie 
math
Amanda has a ribbon that is 1meter long. She wants to put a bead at every of a meter. She puts the first bead at and the last bead is at 1 meter. Which number line shows the correct placement of beads if Amanda puts them at every of a meter? A. B. C. D.
asked by mom 
Microbiology
PLEASE HELP I AM NOT SURE WHAT THE CORRECT ANSWERS ARE: I have guessed them please let me know if they are correct. 1. The LEAST likely microbe to be used as a biological weapon would have which of the following characteristics? a. spread by insect vectors
asked by J 
E.L.A
In which sentence does the prepositional phrase act as an adverb? A)Last evening, Anne suffered from a headache. B)The door to the attic was left open. **** C)Mr. Frank discussed the problem of noise in the annex. D)He bought a drink for Mr. Dussel. In
asked by UNKNOWN 
social studies
how did the three phases of industrialization affect the growth of cities?
asked by help please 
Chemistry
How many grams of potassium nitrate, KNO3 are required to make 250 mL solution with a molarity of 0.40 M?
asked by Veronica 
Pre Algebra Test
Which quadric rule represents the data in the table below? A. y=2x^2+5 B. y=x^2+5 C. y=x^25 D. y=x^2+5
asked by Summer 
Pre Algebra
A 154lb person burns 420 calories per hour riding an excercise bicycle at a rate of 15 mi/h. Write a function rule to represent the total calories burned over time by that person. Explain how the information in the problem relates to the function.
asked by Summer 
math help
A piece of rectangular paper measures 8x by 12x. If a circle with a radius of 3x is cut out of the middle of the paper, what will be the area of the remaining piece of paper in terms of π? 3. A rectangular gazebo measuring 7x by 9x is built in the middle
asked by XenaGonzalez 
E.L.A
Which expression best represents the views a fatalist would have? a. “whatever will be , will be”*** b. “the best is yet to come” c. “we are still masters of our fate” d. “you don’t know what you have until it’s gone” In which of these
asked by UNKNOWN 
Music
the study of great classical composers is called...
asked by No one special 
physics
during a collision, a driver of mass m in a car moving at speed v is brought to rest by an inflated air bag in time t. (a) write an equation showing the average force the air bag exerts on the driver. (b) suppose the mass of the driver is 55 kg, the
asked by osama 
chemistry
CH3C(Cl)(C2H5)CH(CH3)C(NH2)(Br)CH2CH2C(CH3)3 IUPAC name of this compound
asked by Anonymous 
physics
Two charges +q and −q are separated by a distance d. Find an expression for the potential difference VBA = VB − VA, where points A and B are both a distance b from the charges. ￼
asked by kim 
physics
A constant electric field is 29, 000N/C is created between two parallel plates. If the potential difference is 140, 000V , how far apart are the two plates?
asked by kim 
Math
In An election sample poll of 400 you find that 53% of the Sample is planning on voting for our candidate
asked by Anonymous 
math
1 number is selected at random from 09,find the probability that number is odd number
asked by kapil 
Us government
James Madison one said: "wherever the real power in the government lies there is the danger of oppression. In our government the real power lies in the majority of the community. How does the constitution reflect his concern?
asked by Troy 
Pre Algebra
Describe the speed of the remotecontrol car over time. A. The speed of the car decreases from 4 mi/h to 2 mi/h in the first 3 seconds, increases to 5 mi/h in the next 2 seconds, and then remains at 5 mi/h for the last 5 seconds. B. The speed of the car
asked by Summer 
astronomy
On Earth, an astronaut weighs about 600 Newtons. The mass of the Earth is about 6 x 1024 kg, and the radius of the Earth is about 6.4 x 106 m. Suppose the astronaut climbs a ladder to a height of one Earth radius above the Earth. What is the new weight of
asked by bob 
Pre Algebra
Which quadric rule represents the data in the table below? A. y=2x^2+5 B. y=x^2+5 C. y=x^25 D. y=x^2+5
asked by Summer 
math
A 5foot ladder is leaning against a 4foot wall. How far must the bottom of the ladder be from the base of the wall so that the top of the ladder rests on the top of the wall?
asked by Ingrid 
U.S. Government
The authors of the Federalist Papers stated that when framing a government the government must first be able to control the governed and also be able to control itself. To what extent were the founding fathers successful in implementing these goals?
asked by Troy 
math
Antoine went on vacation. His room cost $115.62 each night. His flight there cost $45.70. His flight home cost $32.49. He averaged $15.00 per day on food. On the first day Antoine won $75.00. On the last day he lost $25.00. If he stayed for 3 nights and 4
asked by Ingrid 
math
Which of the following best completes the sequence below? 7, 14,
asked by Ingrid 
Maths
Find domain and range a)f(x)= uderthe radical 13x b)f(x)=1/2x6
asked by Yaekob 
English
Would someone be willing to grade or check my rough draft of a critical review?
asked by Katie 
PHYSICS! are these correct?
How much kinetic energy does a 700gram baseball have that is travelling at 20 m/s? What would be the kinetic energy if you doubled the mass? What would be the kinetic energy if you doubled the velocity? V1= 20 m/s K1= ½ m v1^2 = ½ (700 g)(20 m/s)^2 = ½
asked by A 
math
Nut C fits on Bolt C. Nut B fits on Bolt B. Nut A fits on Bolt A. Bolt C is larger than Bolt B. bolt A and Bolt B are exactly the same. Which is true? a. Nut C will fit on all of the bolts. b. Nut A will fit on Bolt C and Bolt B c. Bolt A will fit Nut A
asked by Ingrid 
math
Nut B fits on Bolt B. Nut A fits on Bolt C, but does not fit on Bolt A. Bolt B and Bolt A are exactly the same. Given this scenario, will Nut A fit on Bolt B? a. Yes b. no c. not enough info
asked by Ingrid 
chemistry
How do I make imgur dot com/kvxVZEv from cyclohexanone. Stork enamine synthesis results in a primary alcohol but I need secondary alcohol with one more carbon atom at right end.
asked by r.sh 
math
SinA➖cosA/sinA➕cosA➕sinA➕cosA/sinA➖cosA=2/cos2A
asked by snenhlanhla 
GT LA
What is the appositive in this sentence? Sarah's dog Buddy dug in the garden. A. Sarah's B. Buddy C. in D. the A or B
asked by Like I'd Tell You. 
math
nut A fits on Bolt B. Bolt C does not fit Nut A or Nut B. Nut D fits on Bolt B. Bolt C is the same size as Bolt D, but smaller than Bolt A. Will Nut D fit Bolt A? a. Yes b. no c. not enough info
asked by Ingrid 
Chemistry
name the three fundamental particles present in an atom
asked by Muluta Shalifu 
reading comprehension
Anna has two aunts, Gertie and Samantha. She has one Uncle, jimbo. Jimbo has a nephew on Anna's side of the family, Timothy, who has two children, John and Aubrey. Which of the following indicates the relationship between Timothy's daughter and Anna? a.
asked by Ingrid 
reading comprehension
Bob has a brother, Jim, who has a daughter named Bertha. Bertha's daughter, Jennifer, has a sister named Penny. Which of the following indicated the relationship between Jim and Penny? a. Jim is Penny's father b. Jim is Penny's uncle c. Jim is Penny's
asked by Ingrid 
Physics
We can measure angles in degrees or radians. When studying angular motion, we will tend to use radians. If you are looking at a portion of a circle, the angle in radians can be calculated by dividing the arc length by the radius of the circle. The arc
asked by Anonymous 
math
nut B fits on Bolt B. Nut A fits on Bolt C, but does not fit on Bolt A. Bolt B and Bolt A are exactly the same. Will Nut A fit on Bolt B? a. Yes b. no c. Not enough info
asked by Ingrid 
reading comprehension
Which of the following is least like the others? a. bear b. elephant c. badger d. hamster
asked by Ingrid 
reading comprehension
Which of the following is least like the others? a. rotator b. deified c. racecar d. alright
asked by Ingrid 
History
1. What were the ideals of movement related to this medallion? @liberty of Congress A. abolition and suffrage B. freedom and abolition C. justice and temperance D. temperance and slavery 2. Based on the information in the poster below, which phrase best
asked by Summer 
science help ASAP
can someone Explain the process of succession plz
asked by sunshine 
algebra 1
The number of bagels sold daily for two bakeries is shown in the table. Bakery A Bakery B 53 34 52 40 50 36 48 38 53 41 47 44 55 40 51 39 Based on these data, is it better to describe the centers of distribution in terms of the mean or the median? Why?
asked by Elena  Help please 
Chemistry
Name the two functional groups found in benzyl acetate? Name the three functional groups found in PABA? Name the two functional groups found in Benzophenone
asked by Anonymous 
Linear Algebra
Consider the transformation T(ax^2 + bx + c) = 2ax + b of P2 → P1. (a) Find T((ax^2 + bx + c) + (px^2 + qx + r)). (b) Find T(k(ax^2 + bx + c)). (c) Find the image of 3x^2 − 2x + 1. (d) Determine another element of P2 that has the same image.
asked by Anonymous 
Geometry
Use the Law of Sines to find the missing angle of the triangle. Find m∠B given that c = 83, a = 44, and m∠A = 31. A. 76.3° B. 15.8° C. 72.7° D. 164.2° Need help on how I would go about doing this...stepbystep. Thank you!
asked by Carpe_Diem 
Linear Algebra
Transform the matrix A=[5,−3;1,1], into a matrix B using the similarity transformation (C^−1)AC, with matrix C=[3,1;1,1]. B=(C^−1)AC = ?
asked by anon 
SCIENCE
History of how this ginger has been used as medicine
asked by coolguy123 
Physics
A 100 hp motor raises a 200lb elevator 200 ft in 10 sec. The efficiency for the elevator system is 72.7% or 73%. How much energy is lost in 10 sec? Answer: 193 Btu Show work
asked by Merrick 
Physics 101
A storage tank of negligible mass and 30m high is filled with gasoline. What is the force that acts on a square access hatch at the bottom of the tank that measures 0.5m x 0.5m
asked by Michelle 
Physics
If a wheel turns around 6.00 complete rotations, what would the angular displacement of that wheel be in radians?
asked by Em 
algebra 1
Given the data set (5, 9), (13, 12), (23, 16), which of the following equations best represents a line of best fit? y = three fourths x − 7 y = four fifths x + 7 *** y = three over two x + 7 y = two thirds x − 7
asked by Elena  Help please 
Math
Simplify. Please show all your work and explain. 6a^3b^2/10a^5b^4
asked by Chelsa 
Science
What's the difference between the types of light detected by radio, refracting, and reflecting telescopes?
asked by Anonymous 
History
Four major candidates ran in the 1824 election, all under the "DemocraticRepublican" name. One of the candidates, Andrew Jackson, was already famous. In the 1780s, he earned the right to practice law and served in various offices of the state government,
asked by jai 
algebra 1
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 Peter 
Algebra
The path of a baseball after being hit is given by the function f(x)= .007x^2+x+4 where f(x) is the height of the baseball (in feet) and x is the horizontal distance from home plate (in feet). at what time will the baseball reach the maximum height?
asked by Anonymous 
SCIENCE
History of how this ginger has been used as medicine
asked by coolguy321 
Mathcheck my work please??
Write an equation, in pointslope form, for the line that is perpendicular to y – 10 = 3/2 (x – 4) and that passes through the point (4, 2). My Answer: Formula for pointslope form; y – y = m(x – x) Insert y and x value; y – 2 = m(x – 4) If the
asked by Scarlet (Scar for short) 
Math
Beta has a rope 23m long. She cutis off 1/5 of it.How long are the two pieces
asked by Maria 
English
The primary purpose of the passage is to __________. A. describe the best way to consume chocolate B. discuss current theories about chocolate and health C. give factual information about the history of cacao D. persuade readers that cacao originated in
asked by Sarah Lott 
magh
suppose you put money into teo different bank accounts. In account #1 you deposit $500 and you will be earning 6% interest compounded quarterly. in account #2 you deposit $600 and you will be earning 5% interest compounded annually. Which statement below
asked by Sarah 
English Q's 15
Read the following passage. Then answer questions 15 on the online portion of the Unit Assessment. From The Lost Prince By Frances Hodgson Burnett There are many dreary and dingy rows of ugly houses in certain parts of London, but there certainly could
asked by Sarah Lott 
physics
A net force of 1.6×10−15 N acts on an electron over a displacement of 7.1 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron (joules)?
asked by amanda 
Physics
If the angular velocity, ω, changes from 7.07 rad/s to 24.2 rad/s over a time of 6.42 s, what is the angular acceleration, α?
asked by Em 
Social Studies
1.What led to increased trade between Europe and Asia A.The Black Death B.The Crusades C.The Hundred Years' War D.The Reconquista 2.Why Did Pope Urban II call for Christians to go a Crusade A.To Win Back The Roman Empire B.To Win Back Holy Land C.To
asked by Sid.V 
algebra 1 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 fourths x − 7 y = four fifths x + 7 *** y = three over two x + 7 y = two thirds x − 7
asked by Peter ASAP HELP PLS 
History
1. What were the ideals of movement related to this medallion? @liberty of Congress A. abolition and suffrage B. freedom and abolition C. justice and temperance D. temperance and slavery 2. Based on the information in the poster below, which phrase best
asked by Summer 
PreAlgebra
The layer cake has both vanilla and chocolate frosting. What percent of the surface area of the cake (not including the bottom) is chocolate? Round your answer to the nearest tenth of a percent.
asked by Anonymous 
English
When assembling a writing plan for an essay, which of the following should come first? A. Material that catches the reader's interest B. The first section of the body of your essay. C. A brief summary of your conclusion (D. The general idea of your essay)
asked by Jocelynn 
algebra i
I'm a little confused at how to do this problem, could you check this to make sure I have it done right ? (x4)^2 = 625 (undo square by square root) (x2) = 25 (x+2) = 25 x = 27 x = 23
asked by anonymous 
Physics
A ball is attached to a center post by a string that is 0.382 m long. The ball is moving in a circle on a frictionless table top at a speed of 1.28 m/s with a radius of 0.382 m. What is the centripetal acceleration of the ball?
asked by Em 
Math
What is the rate of the current if a canoe travels 22mph
asked by Nick 
Trigonometry
A wheel has a 12 inch radius rotating at 620 RPM. What is the speed of the car in MPH?
asked by John 
Math
Could someone check my work? A 200foot cliff drops vertically into the ocean. The angle of elevation from a ship to the top of the cliff is 22.3 degrees. How far offshore, to the nearest foot, is the ship? Tan(22.3) = 200ft/x xtan(22.3)=200ft
asked by Matt 
Math
What is 9weeks and 5 days  1 week and 6 days. Also what is 1 decade and 8 years  9 years
asked by Essence loves math 
Physics
A car is traveling around a bend at a speed of 12.4 m/s. The bend has a radius of curvature of 66.7 m. Friction is the only force acting towards the center of the circle. If the mass of the car is 862 kg, what is the force of friction required to make the
asked by Em 
Math
Another problem I need to confirm: A ship is 60 miles west and 91 miles south of the harbor. a) What bearing should the ship take to sail directly to the harbor? (Round answer to nearest tenth of degree.) b) What is the direct distance to the harbor? A)
asked by Matt 
maths
A vehicle travels equal distances at 60km/h and 90km/h.calculate its average speed
asked by peter 
Physics
Jason and Kim are attempting to push a heavy fridge across the kitchen floor. When Jason pushes it with a muscular force of 550. N, the fridge accelerates from rest to 28.0 cm/s in 3.50 s. When Kim pushes it with a muscular force of 560. N, the fridge
asked by lost in life 
Chemistry
If you had observed the fate of an ice cube at 25 degrees Celsius, what would you conclude about the spontaneity of the process H2O (s) H2O (l) ? I know for it to be spontaneous, delta G has to be negative, but how can I determine the delta G with the info
asked by Chelsea 
History,Geograph and Tourism
Can i be a bolice with this subjects ?
asked by Bongani mpanza 
Math
Liz has 50 ft of fence to put around rectangle garden. Her garden is going to be 10 feet eide. How long will the garden be
asked by Haley 
History,Geograph and Tourism
Can i be a police with this subjects ? *Tourism,history nd Geography
asked by Bongani mpanza 
Math
What is best • ½ pint of oil at $0.90, or • 1 pint of oil at $1.65, or • 2 pints of oil at $3.40, or • 5 pints of oil at $8.10 ? A ½ pint of oil at $0.90 B 1 pint of oil at $1.65 C 2 pints of oil at $3.40 D 5 pints of oil at $8.10
asked by Sarah Lott 
math
How can you write an equation of two test scores 97 and 88
asked by jose 
algebra
A ball is thrown straight up from a rooftop 9696 feet high. The formula below describes the ball's height above the ground, h, in feet, t seconds after it was thrown. The ball misses the rooftop on its way down. The graph of the formula is shown.
asked by lisa 
Math
How many ways can Amanda, Basil, Charles, Denis, and Edna sit in a row if Basil and Edna must sit together?
asked by Max 
Math (Geometry!)
What is the definition of complimentary angles? a. Two angles that add to be 180° b. Two angles that have a difference of 90° c. Two angles add to be 90° d. Two angles that have a difference of 180° I think the answer is B.
asked by Sarah Lott 
Math (Geometry!)
What angle is complimentary to 32° a.−32° b.148° c.58° d.32° im pretty sure the answer is going to be 32 degrees if it is complimentary agnle
asked by Sarah Lott 
integration!!help urgently
integrate:dz/(z^2+1) where z is a complex number.....plz working
asked by david 
English
What does the word "melancholy" mean? No multiple choice answers provided.
asked by Sarah Lott 
Math
How many arrangements of all the letters in the word WINNIPEG can be created if the N's cannot be together?
asked by Max 
Spanish
Choose the best answer to the following question. Cuantos minutos hay en una hora? a. cuarenta b. sesenta c. cincuenta d. setenta
asked by Jennifer Matthews 
Precal
How do i find the exact value for: (cos5pi/16)(cospi/16)+ (sin5pi/16)(sinpi/16)
asked by Shelbie 
Math
What is 9x + 3y  8z in slope intercept form? y = mx + b
asked by Azariah 
Math
Rena knows a dollar coin has a mass of a little than 10 grams. She guessed that 1 kilogram of dollar coins would be worth dollars. Is this prediction reasonable ? Explain your thinking
asked by Aidan 
Spanish Math Problem???????
Choose the correct answer for the following problem. dieciseis + diecisiete = ? trienta y tres viente y dos cuarenta y siete cincuenta y nueve I don't know
asked by Azariah 
math
Alex bought 27 donuts from Dunkin Donuts. He ate 1/9 of the doughnuts. He took the remaining donuts and share them equally amongst 12 classmates. How many donuts did each friend receive?
asked by alex 
biology
When chromatids separate during anaphase two (in meiosis), do all the maternal and paternal chromatids stay together or do they randomly separate into the daughter cells?
asked by Larry 
Precal
How do i get left side to equal right side? (Cos x)/(1+sin x) + (cos x)/(1sin x) = 2secx
asked by Bobbie 
Math
A model car has a scale of 1:24, where the model dimensions are in the numerator and the actual dimensions are in the denominator. if the tires on the model have a diameter of 1/2 inch, how long is the diameter of an actual tire on the car?
asked by Anonymous 
Physics
Tom (65 kg) is standing on a scale in an elevator holding an apple. The elevator begins to accelerate downwards at 2.4 m/s2. (a) What does the scale read during this acceleration? (b) What is the acceleration of the apple with respect to Tom holding the
asked by lost in life 
Math
Is it easier to evaluate n^0 w^0 for n=2 and w=3 by simplifying first or by substitute first ? explain
asked by Anonymous 
Math
You are setting up a system of programming codes for a universal TV remote. Each code will have five digits and cannot include a 0 or repeat any digits. How many codes: A) do not contain a 1? My answer: 8x7x6x5x4 = 6720 codes B)have 2 as the 2nd digit and
asked by Rose 
Linear Algebra
Diagonalize the matrix A = [1,1;2,4] using a similarity transformation. Give the transformation matrices such that (C^−1)AC = D, where D is a diagonal matrix. (D, C) = ?
asked by anon 
English
I read play ecstasy of rita joe and I'm doing analysis paper on character of rita. I need to come with argument for thesis. I'm trying to say that she doesn't really listen and understand white people, and this trait of hers leads her to trouble but I
asked by Mohammad 
math
ribbon a is 36 centimeters long. ribbon b is 39 centimeters longer than ribbon a. what is the length of ribbon b ?
asked by nikki 
math
the temperature at 8 a.m. was 65 degrees. By 11 a.m. the temperature had increased 17 degrees. What was the temperature at 11 a.m. ?
asked by dani 
Algebra 2
Q: Write a quadratic equation with integral coefficients whose roots are 6+i and 6i My Answer: x^2+12x+37 (first) sum=12 product=37 (then) write equation using formula x^2(sum)x+product Is my work and answer correct?
asked by Bryan 
science
You observed light passing through lenses and through a set of prisms. Why does refraction occur?
asked by help pls 
Geography
What is surprising of the geography of the European Union
asked by Anonymous 
Physics
A swimmer point directly to the North Shore of a 20.0 m wide river that has a current of 2.7 m/s [W]. If she can swim at 1.3 m/s in water; A. Draw an appropriate diagram for the question B. How long does it take her to cross? C. How far downstream does she
asked by Ceara 
Algebra
A man paid $7.80 for 5 The grams of peanuts and 3 kg of walnuts. Walnuts are $.20 a kilogram more than peanuts how much did she pay per kilogram for each
asked by Scott 
math
If i buy3 1/2 guart of orange. And my family drinks 3 cups each morning how many days will it last
asked by juelz 
Geography
Why was a charter created for the United Nations?
asked by Anonymous 
math
Herbert has a mass of 28 kilograms. his mother has a mass off 55 kilograms. how much heavier is Herbert's mother than Herbert ?
asked by nikki 
Calculus
1) A telephone company has 10,000 phones in a certain city where the basic rate is $4 per month. The officials have evidence that if the charge is reduced the number of phones will increase at an estimated rate of 1,000 phones for each 25 cent reduction.
asked by Omar 
Math
The game of euchre uses the 10s, jacks,queen,kings and aces from a standard deck of 52 cards. How many 5card euchre hands have at least 2 red cards? Explain your reasoning. What is this question asking me to find, this is what I don't understand
asked by Rose 
Geography
What are the nations on the Security Council and why were they chosen as members? US,Russia,UK,France,China I'm not sure why they were chosen.
asked by Anonymous 
Geography
What are some of the humanitarian or social functions of the united nations
asked by Anonymous 
Geography
How is the United Nations able to impact international political relations of sovereign nations? What gives it that power?
asked by Anonymous 
math
Ore from least to greatest 6/2,7/3,5/4,1/3,4/3
asked by bryan 
Math
Jerry started doing situps every day. The first day he did 19 situps. Every day after that he did 2 more situps than he had done the previous day. Today Jerry did 41 situps. Write an equation that could be solved to find the number of days Jerry has
asked by Merio 
Algebra
I'm kind of confused on the problem in point slope form. Please show me stepbystep. Thank you. y18.5=3.2/3(x1)
asked by Jalen 
Physics help pls
Pls help me I have a test tmrw A block with mass 5kg slides along a horizontal floor under the action of a force 20N applied upward at an angle θ to the horizontal. The coefficient of kinetic friction between the block and the floor is μk = 0.4. Find the
asked by Jamila 
PHYSICSS HELP
3)A 9kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
asked by Simon 
PHYSICS HELP
3)A 9kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
asked by Simon 
math help pls pls pls
Choose the correct simplification of the expression the quantity a to the 2nd power over b to the 3rd power all raised to the 4th power. A. a to the 6th power over b to the 7th power B. b^12 C. a^8b^15 D. the quantity a to the 8th power over b to the 12th
asked by Oscar 
math
Marcela 527 donuts from Dunkin Donuts. She ate one ninth of the donuts. She took the remaining donuts and shared them equally amongst 12 classmates. How many donuts did each friend receive?
asked by alex 
Physics
3)A 9kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
asked by Simon 
Calculus
A 15.5 foot ladder leaning up against the building .the base is 8.2 feet away from the building .how far up does the ladder reach against the building.
asked by Vickie 
math
Marcela 27 donuts from Dunkin Donuts. She ate one ninth of the donuts. She took the remaining donuts and shared them equally amongst 12 classmates. How many donuts did each friend receive?
asked by alex 
math help pls pls pls
Find the quotient of the quantity negative 36 times x to the 3rd power minus 6 times x to the 2nd power plus 12 times x all over negative 6 times x. −36x3 − 6x2 − 2 −6x2 + x − 2 6x2 − x + 2 6x2 + x − 2 pls help me
asked by Oscar 
Physics
With what maximum speed can an unsecured passenger stay in their seat on a Ferris wheel that has a diameter of 12 m.
asked by Jules 
PHYSICS?
1300 kg car rounds a banked curve of radius= 50m. If car traveling at 75 km/h and the coefficient of static friction between the tire and road is 0.45 ... 1.) what is the minimum angle of the bank needed to keep the car in the turn? 2.) If the car changes
asked by Dina 
statistics of business
A telephone company’s goal is to have no more than six monthly line failures on any 100 kilometres of line. The company currently experiences an average of three monthly line failures per 50 kilometres of line. Let x denote the number of monthly line
asked by Yogeswar 
art
For years, community art was created by a professional for the enjoyment or education of a public group. how did the definition change in the nineteenth century? a. community art was now also exhibited in museums. b. community art was now also created to
asked by im new here 
chemistry
what type of a ligand would 18 crown 6 ether be? hexadentate?
asked by Anonymous 
Algebra
Form a third degree polynomial function with real coefficients such that 7 + i and 9 are zeros
asked by Robin 
Algebra 2
Q: (x^29/x^25x)(5xx^2/x^2x12)(x^28x+16/x4) my answer: 1 How i solved: crossed multiplied 2 of the 3 sets of fractions the multiplied the answer to the remaining one and simplified. Can you check that my work is correct?
asked by Bryan 
math help pls pls pls
Find the quotient of the quantity negative 15 times x to the 2nd power times y to the 6th power plus 50 times x to the 4th power times y to the 3rd power minus 20 times x to the 2nd power times y all −3y5 + 10x2y2 − 4 −15x2y6 + 50x4y3 − 4 3y5 +
asked by Oscar 
math help pls pls pls
Four polynomials are shown below: A. 2 − 2x5 + 2x2 B. 5x3 + 5 − 5x4 C. 3x + 2x5 D. 6x3 − 1 Which of the above polynomials is a 5th degree binomial? Polynomial A Polynomial B Polynomial C Polynomial D pls help me
asked by Oscar 
Biology
Treehoppers have either purple, or green, or white skin. Other geneticists have determined that: (1) whenever one white treehopper is mated with another white treehopper all the progeny are white. (2) whenever two pure bred purple treehoppers are mated all
asked by Jared 
physics
Soft tissue has a linear attenuation coefficient in the range of μ = 0.35 cm−1 at 30 keV and μ = 0.16 cm−1 at 100 keV. For this problem we use μ = 0.21 cm−1, which applies at around 50 keV incident Xray energy. (a) What fraction of Xray photons
asked by mar 
Physics
An astronaut exploring a distant solar system lands on an unnamed planet with radius 3,860 km. When the astronaut jumps upward with an initial speed of 3.5 m/s, she rises to a height of 0.62 m. What is the mass of the planet to within 0.1%?
asked by suveer 
physics
Assuming that the equation Ephoton, final = Ephoton, initial/1 + Ephoton, initial/mec2 (1 − cos θ) can be approximately applied at all scattering angles θ, what is the minimum energy of a scattered Xray photon if the incident Xray energy is 76 keV?
asked by m 
Biomechanics
Jane is a 45 kg cyclist. If her bike weighs 100 N and she landed with her bike on the floor at a vertical reaction force of 890 N, what was her vertical acceleration during landing?
asked by Matt 
Math
The school store opened on the first day of scroll with 56 notebook and 24 pencils. Within two days it sold all of these items. On the first day, twice as many notebooks were souls as pencils. On the second day for every 5 notebooks sold, 2 pencils were
asked by Manuel chua 
calc
A farmer has a herd of 100 cattle with an average weight of 500 lbs/cow. It costs 50 cents a day to keep each cattle. They are gaining weight at a rate of 6 lbs per day. The market price is now $1 per lb for beef and is falling by 1 cent each day. How long
asked by p 
physics
A student holds a laser that emits light of wavelength 641.5 nm. The laser beam passes though a pair of slits separated by 0.400 mm, in a glass plate attached to the front of the laser. The beam then falls perpendicularly on a screen, creating an
asked by James urgent 
Political science
How did the Stamp Act, Boston Massacre and Boston Tea Party connect with the idea of representation? Use Zinn "Voices of a people's history of the united states" and the Federalist Papers to support your answer. Also, be sure to discuss the ideas of pure
asked by TayB 
Chemistry
What is the solubility of X in mol/dm3 if 25cm3 of its saturated solution contains 4.0g of X (Molar mass of X=60)
asked by Toyety