Questions Asked on
November 21, 2016

math
Find the coterminal angles for 8pi/3. I found one: 8pi/3  2pi= 2pi/3 My textbook says that I should add subtract 4pi to find the other one and I'm very confused as to how you know what to add/ subtract.

Social studies
How are capital resources used in production

Math
Draw a model. Then, write the numerical expressions. the sum of 21 and 4,doubled.

American Government
"With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers..." 1) Which

Math
Write the number in two other forms 0.326

ss
1.Who Were Among the first permanent White settlers in Oregon. A.Farmers B.Trappers C.Missionaries D.traders 2.What was the Rendezvous and why was it important to the maintain men a:it was the largest trading company in the west and the mountain men traded

Math
A tree broke due to storm at a point but did not get separate . its tops touched the ground at a distance of 10 m from its base if the height of the point from the ground at which the tree was broken is 12\25 of the total height of the tree find its height

Maths help asap please.
The product of two consecutive positive integers is added to the larger of the two integers. Prove that the result is always a square number. Thank you for your help.

Math
Michael saves $423 dollars a month for college. About how much will he have saved after 4 years?

S.S
1. In Marbury v. Madison, the Supreme Court established a principle that would eventually be used by all courts to strike down any law that the court deems unconstitutional decide the outcome of contested election results overturn any impeachment that

Chemistry
1.654 of a hydrated acid H2C2O4.xH2O was dissolved in water and the soultion was made up to 250cm3 . 23.80cm3 of this solution required 25.00cm3 of 0.100moldm3 NaOH to reach the end point. Identify the value of x and the formula of the hydrated acid

Physics
You row a boat perpendicular to the shore of a river that flows at 2.5 m/s. The velocity of your boat is 4.5 m/s relative to the water. (a) What is the velocity of your boat relative to the shore? (b) What is the component of your velocity parallel to the

Physocs Components of Resultant Vectors
The force vector A has components Ax= 5N, Ay= 3N. The force vector B has components Bx= 5N, By= 4N. What are the component of the resultant force vector C=A+B?

English
1. I am already late. 2. I have already been late. 3. It was already late. 4. It had already been late. 5. It has already been late.  Can we use all the expressions?

Physics Accleration of a Falling Penny
A visitor to the observation deck of a skyscraper manages to drop a penny over the edge. As the penny falls faster, the force due to air resistance increases. How does this affect the acceleration of the penny? a. The acceleration decreases b. The

Math
The temperature Rose 13°f between noon and 5 p.m. and then fell 7°F from 5 p.m. to 10 p.m. if the temperature at Noon is 75°f what would the temperature be at 10 p.m.

TIP MATH!
Explain how mental math can be used to estimate a 15% tip on a taxi ride that costs $23.25. PLZ HELP! BE VERY Descriptive on how you did this! I'm Sick Today So I've Barely Have Brains To Do This Today, So HELP!!!

Physics
A 1200 lb sleigh is pulled along a horizontal surface at uniform speed by means of a rope that makes an angle of 30 degrees above the horizontal. If the tension in the rope is 100 lb., what is the coefficient of friction?

Physics Baseball thrown upwards, accleration
When a baseball is thrown straight upward, what is its acceleration at its greatest height? a. 9.8 m/s2 upward b. 9.8 m/s2 downward (my answer?) c. 0 m/s2 d. 9.8 m/s2 horizontally

Math
a student answered 86 problems on a test and got a 98%. How many problems were on the test?

american goverment check answers
9. What criteria might a judge who abides by a philosophy of judicial restraint use to decide a case? (1 point) The judge would consider previous court decisions on the topic but ultimately consider the current circumstances and changes in society. The

mathematical methods for economics
in a class of 300 students,they were given mathematics test in three subjects namely,economics,statistics and mathematics,90 students failed in economics,100 failed in statistics,96 failed in mathematics,60 failed in economics and statistics,64 failed in

physics
(1) a car travelling at a constant speed of 20ms1 overcomes a constant frictional resistance of 300N. What is the horse power of the engine? ( take 1h.p = 3/4 kw)

Algebar
81x^(6)25y^(10) Factor

Econ math/logarithms
If log with base b (2)=0.39 and log with base b (3)=0.61 evaluate the following. log with base b (8). Simplify your answer. How to start? I thought I am supposed to write log base b 2^3 but I don't seem to get an answer that would fit.

algebra
The revenue function for a bicycle shop is given by R(x) = x Â· p(x) R x x p x dollars where x x is the number of units sold and p(x) = 100 âˆ’ 0.4x p x 100 0 4 x is the unit price. Find the maximum revenue.

Math
If thrice of "A's" age 6 years ago be subtracted from twice his present age the result would be equal to his present age. Find "A's" present age.

science
A librarian lifts a box of books that weighs 93N a distance of 1.5 m. How much work does he do?

Social Studies
Which made trade among the states difficult under the Articles of Confederation? A. Trade policies set by the central government favored the larger states. B. Each state printed its own money. C. The central government taxed goods moving between states. D.

Social Studies
7. What two answers are reasons that Congress decided the election of 1800? a.)Based on the outcome, it was mandated by the U.S. Constitution.* b.)The popular vote was a tie. c.)No candidate won the electoral vote.*

Physics
A bullet traveling at 200 m/s strikes a soft wood and penetrates 4.5 cm through it before coming to rest. Calculate the bullet's average retardation

Math
56 decreased by twice Craig's savings

math
Dina can make six bracelets in an hour. At the same rate, how many bracelets could she make in each allotted time listed in the table? Separate each answer with a comma.

Physics
A baseball with a mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? a. 7.0 m/s2 b. 2.8 m/s2 c. 9.8 m/s2 d. 12.6 m/s2

Social Studies
Which made trade among the states difficult under the Articles of Confederation? A. Trade policies set by the central government favored the larger states. B. Each state printed its own money. C. The central government taxed goods moving between states. D.

PhysicsTension Force
A strong, weightless rope has a 0.15 kg mass hanging from the middle of it. What tension force will make the rope horizontal, corresponding to θ=0°?

Chemistry 20
If 4.56 mol of zinc react with excess copper (ii) sulphate, how many moles of precipitate will be formed?

Physics Equilibrant Force
Two movers are pushing a large crate with a force of 50.0 N each. One pushes north, the other east. What is the equilibrant force? a. 71 N Southwest b. 50 N Northeast c. 100 N Southeast d. 71 N Northeast

child care managment
6. Child care staff should integrate health education into child care programs for A. local police and emergency workers. B. neighbors of young children. C. children, staff, and families. D. the entire communit

Chemistry
Is "a color of solution becoming less intense due to dilution" maybe evidence of chemical reaction or not?

Physics
Water drops from a waterfall 84 meters high .The temperature of the water at the bottom is found to be 26.2 degrees Celsius. Calculate its temperature at the top of the waterfall

Math
1. What data are represented by the stemandleaf plot below? 3  7 8 9 4  1 3 7 5  2 4 Key: 4  1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54*** b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the

Help needed
which number is a perfect cube a.7 b. 25 c. 66

Physics
A 0.14 kg baseball is pitched at a speed of 35 m/s. If it is hit straight back at the pitcher with a force of 5400N exerted over a time interval of 1.0 millisecond, find: the distance that the baseball was in contact with the bat (hint, use d = Vave*t)

maths
Convert in improper fraction 6 5/12

Math
Ricky took a survey in the fifth grade and found that 2/3 of the students ride the bus to school and 1/4 of the students walk. What fraction of the fifth grade students either ride the bus or walk to school?

Math
Draw a model. Then,write the numerical expressions. 5 times the sum of 7 and 23.

Chemistry
8.8 g of iron(II) sulphide reacts completely with excess dilute hydrochloric acid. Calculate the volume of hydrogen sulphide evolved, measured at 18 º C and 729 mmHg pressure.

maths
Using trigonometric ratios find the remaining side lengths and angle measurements to 2 decimal places each: (a) α = 35°, β = 90°, a = 30 (b) α = 90°, b = 7, c = 6 (c) a = 33, b = 56, c = 65

chemistry
Explain why sodium carbonate against hydrochloric acid titration using phenophthalein titration do not go to completion but stop at the sodium hydrogen carbonate stage.

Statistics
The life span of a calculator manufactured by the Intel Corporation has a normal distribution with a mean of 54 months and a standard deviation of 8 months. The company guarantees that any calculator that starts malfunctioning within 36 months of the

chemistry
What volume of alcohol would you use if you needed 25.0 g? Density is 0.7855 g/ml at 20°C

Chemistry
Carbohydrates (such as C6H12O6) undergo combustion with oxygen to produce carbon dioxide and water. Living things use this reaction (a process called respiration) to produce energy. Determine the mass of carbohydrates consumed for every 0.300 mol of oxygen

Math
If the roots of the quadratic equation ax^2+bx+c=0 are in the ratio r:1 prove that acr^2+(2ac_b^2)r+ac=0

American government
American foreign aid might be used to support which of the following foreign policies? A) Deterrence B) Containment C) Collective Security*** D) Isolationism

Physics
The temperature of the Sun’s surface (the socalled photosphere) is about 5500 C. Assume that the Sun’s surface is pretty close to a perfect blackbody emitter. (a) At what wavelength does the peak intensity of Sun’s radiation lie? (b) Estimate the

math
A rectangular poster is to have 50 squared inches for printed matter. It is to have a 1 inch. margin on each side and a 2 inch. margin at the top and bottom. Find the dimensions of the poster so that the amount of paper used is minimized. Horizonatal

Biology (please help!!)
Explain the process that takes place in the stroma including and reactants going in nd the products produced from these processes in a. bright sunlight and in b. darkness. c. what happens over an extended period of darkness of many days? What I need to

EN110
To practice your reading comprehension skills, remember all of the following EXCEPT:

Human and Social Biology
In guinea pigs short hair S,is dominant to long hair. A heterozygous guinea pig mated with a homozygous recessive pure breed. State the proportion of the geno type and the phenotype of the offspring

Social Studies
What were the Articles of Confederation? A. a document created by the Continental Congress that served as a governmental plan for the nation as a whole B. a document created after the states had written their constitutions that included the powers and

Physics
A wheel rotating initially at an angular velocity of 1.0 rad/s, accelerates over a 10 S interval at a rate of 0.1 rad/s^2. What angular displacement does the wheel undergo in this 10 S interval, in terms of revolutions?

Science
Balance chemical equations using the first 20 elements

Math fractions
kate is using fraction strips to add 4/10 and 4/5 she uses one whole strip to represent the sum. how many fifths strips does she need to complete the sum?

computer science
In a mobile phone network, how many times as strong would a signal be expected to be at 500 m from a base station, compared with at 250 m? Choose the nearest value from the list below.

Chemistry
A sample of carbon monoxide was collected over water at a total pressure of 752 torr and a temperature of 15°C. What is the pressure (in torr) of the carbon monoxide?

Chemistry
5g of salt are dissolved in 200g of water,what mass of solution is this?

English
1. He wrote this novel last year. => This novel was written last year. 2. He has written this novel in easy English. => This novel is written in easy English. 3. He lost two pens last week. => Two pens were lost last week. 4. He has lost two pens .

Stats
4 teachers selected from 13 parents and 5 teachers

Mathss
Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The rightangled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle α = 40° and adjacent sides b=10 and c=20.

Math, Surds
The area of a square vegetable guarden is 60m^2. a) What is the exact length of each side of the garden? b) If a fence of a chicken wire is to be constructed around the vegetable garden, what length (to the nearest meter) of chicken wire is needed. It

Income tax
Steve and Sue are married with three dependent children. Their 2015 joint income tax return shows $389,000 of AGI and $60,000 of itemized deductions made up of $30,000 of state income taxes and $30,000 of charitable contributions.

math
on the assumption that IQ's are normally distribited in the population with a mean of 100 and a standard deviation of 20 findbthe proportion of peoples IQ's. what is the probability that a score picked at random will lie above score of 135, lie below score

American Government
1) Why was the Department of Defense created? A) to place the U.S. Army and Navy in one executive department B) to establish a military chain of command C) to end disagreements between the U.S. Army and Navy D) to lessen the instance of military abuse of

physics
suppose the experiment was conducted on the surface of the moon of about 16th that of the earth. If a single period takes exactly 1.00 second, how long does a period take on the moon ?

GaussJordan elimination
[1 1 17] [1111] [11]3]

Chemistry
In an aqueous solution containing a mixture of Zn2+and Mg2+, how would you determine their contents by means of EDTA titration?

Chemistry
What is the morality of a solution prepared by dissolving 10.60g of sodium trioxocarbonate (v) in enough distilled water to obtain 250.0 ml of a solution?

motion
A ball of mass 1000g moving with 7m/s impinges another ball of twice its own mass and moving with 1/6th of its own velocity and moves in the opposite direction. If the coefficient of restitution is 0.75, calculate the velocities of the two balls after

science
a cylinder filled with hydrogen gas at 20 degree atmosphere can with hold 10litres of water .the spherical balloons are to be filled with hydrogen gas such that the radius of each balloon is 5 centimeter .how many balloon can be filled with hydrogen gas

math
what is 8/9  17/54

Physics Object Reaches Maximum Height
When an object that has been thrown into the air reaches its maximum height, which is true? a. its velocity is zero. b. it is at its terminal velocity. c. it is not in free fall. d. its acceleration is zero.

Math
Carl shaded in the multiplication table.the products in the row are all even.the ones digits in the products repeat 0,4,8,2,6.what row does carl shade

dav chd
Depress the quartic x^4  4x^3 + 2x^2 + 4x + 4 into w^4  4w^2 + 7

epidemiology
The prevalence of previously undetected diabetes in a population to be screened is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum sugar content. A value of 180 mg percent or higher is

Physics
Is it true that with buoyancy, the weight of the displaced water equals the weight of the complete object, even if only a part of the object is submerged? If so, why, since the weight of a larger object would be greater than that of a smaller one?

IUPUI
The prevalence of previously undetected diabetes in a population to be screened is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum sugar content. A value of 180 mg percent or higher is

maths
Find a fraction which reduce to 2/3 if the numerator and the denominator are each increased by 1 and reduce to 3/5 if the numerator and the denominator are each reduced by 2

Chemistry
A patient requires 0.012 g of painkillers available as a 15 mg/ml solution. How many ml should be administered?

Chemistry
How much calories does it take to raise the temperature of 225 g of H2O from 25 °C to 100 °C. (Specific heat of water 4.182 J/(g* °C)

Physics
The electric field between two equally but oppositely charged parallel plates is 2.35 N/C [south]. If a charge of –2.00 C was placed at the midway point between the plates, what force (magnitude and direction) would act on the charge? Give the direction

Math
A number is as much greater than 21 and is less than 71. The number is?

Chemistry 20
a source of hydrogen is an important issue of hydrogen fuel cells are going to become useful in automobiles. What important perspective is missing?

Math
Ten years ago the age of the father was four times of his son. Ten years hence the age of the father will be twice that of his son. The present ages of father & son are?

Statistics
Please help I don't know how to solve this problem : Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana. After examining accounting records for the past several years, he found that the store

Algegra
I need help understanding this and possibly how to do it... For the equation Ax + By = C (where A, B, C are real numbers) what is the slope (in terms of the traditional y = mx+ b) and state any restrictions.

Physics Equilibrium
Which of the following is in equilibrium? a. an object that was thrown straight upward at the moment it has zero velocity (my answer) b. an object moving in a circle at constant speed c. an object that moves at constant velocity d. an object that moves at

American government
How have NATO's operations changed over time ? A.) NATO only directs peacekeeping measures now B.) NATO no longer defends Western Europe C.) NATO has fewer member countries now than when it began D.) NATO's activities now include crisis management and

pe
True or False: The more active you are, the fewer calories you should eat. A. TRUE B. FALSE

Math
The perimeter of a rectangular field is 140m. If the length of the field is increased by 2m and its breadth decreased by 3m,the area is decreased by 66sq.m. find the length & breadth of the field.

statistics
To observe the effect of increasing sensitivity, assume a blood sugar screening level of 130 mg percent, with a sensitivity of 44.3% and a specificity of 99.0%. Set up a two by two table with the appropriate numbers in each cell. Calculate the following

Math
A man sold a chair and a table together for $1520 thereby, making a profit of 25% on chair and 10% on table. By selling them together for $1535 he would make profit of 10% on the chair and 25% on table. Find the cost price.

algebra
It took Joe 1 1/2 hours to walk to the mall. James did it in 1/5 of the time it took Joe. How long did James take?

Chemistry
How many moles of air must be pumped into a 4.8 L tire to give it the pressure of 47.1 psi at 25°C ? I'm not sure how to even start doing this problem.

Physics
A 51kg vampire and 139kg werewolf clash during the Feat of Strength part of the annual celebration of Festivus. The werewolf velocity just before the clash is 6 m/s and is directed upwards, while the vampire velocity at the moment of the collision is

Math
Ivanna has scored 70 , 65 , 65 , 64 , and 62 on her previous five tests. What score does she need on her next test so that her average (mean) is 69 ?

Math algebra
If two people working together can do a job in 4 hours how long will it take the slower person to do the same job if one of them is 3 times as fast as the other?

Physics
An astronaut lands on a distant planet and places a mathematical pendulum with a length of 50 cm. He measures that the pendulum makes 100 oscillations in 136 sec. What is the gravity acceleration on that planet.

American government
"With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers..." Which

Math
The perimeter of the rectangle is 54 meters the lengthy of the rectangle is five less than three times with what is the lengthy of the rectangle

maths
i am more than 10+10 but less than 20+5.who i am?

Physics
In a vertical lifting an object with mass of 2kg is lifted 1m above the ground. A work of 80J is done with a constant force. What is the acceleration of the object?

Science
Go to the place where knowledge sleeps Follow the path that he left behind Where data are tested and facts win out Find what is labeled with a century less two Now name the phantom marked by cross and double lines

Social Studies
How Would You Describe the Land Elevation At The Start of His Journey In North America?

math
(a) Differentiate (x^2 + 1)^4 (b) Hence find a primitive of 8x(x^2 + 1)^3 .

physics
A uniform rigid rod of mass 1kg and length 30cm. Find the moment of inertia of the rod about an axis perpendicular to the rod through on end.

Mathematics
France is twice as old as his brother Emma.the sum of their age is less than their father by 12 years.if the father is 30 years.how old is Emma

mathematics
France is twice as old as his brother Emma.the sum of their age is less than their father by 12 years.if the father is 30 years.how old is Emma

Math
2,48 >2,4 _ 1>2,463

computer
Write an algorithm to enter marks of three subject for 100 students and find average and percentage if age is greater than 20 and less than 25

social studies
On November 12, 1815 Elizabeth Cady Stanton spokesperson for the rights of women was born in Johnston, New York. Stanton formulated the philosophical basis of the woman suffrage movement, blazing a trail many feared to follow. Stanton verbal brilliance

Math
From left to right the first three digits of a 4 digits number add up to 8 which digits could be in the ones place if the 4 digit number is divisible by 6

Math
Michael purchased a certain number of share of one stock for a total of $308. The second stock was selling for $3 less per share . Michael could have bought 6 more shares of the second stock for the same amount of money. How many shares of the first stock

Social Studies
Why did Adams increase the size of the American Navy? a.) He wanted to prepare for an allout war on Britain. b.) He hoped it would deter more attacks by French ships. * Is this right?

Algebra
The coordinates of quadrilateral VXY Are given below. Find the coordinates of its image after a dilation with the given scale factor V(6, 2), W(2, 4), X(3, 2), Y(3, 5) scale factor of 2 Do I just multiply the coordinates by each other?? V(12 x 4) W(4

maths
a man is 24 yrs older than his son.after 10 yrs he wili be 3 times as old as his son. how old is the son?

math
What is the average rate of change of the function f(x)=20(1/4)^x from x = 1 to x = 2? Enter your answer as a decimal. Do not round.

English
1. He has written this novel in easy English. (active) 2. This novel is written in easy English. (passive) 3. This novel has been written in easy English.(passive) 4. He has lost his pen.(active) 5. His pen has been lost by him.(passive) 6. His pen is

math
area of a regular octagon of side 12.5

Algebra pt. 2
Relating back to my question below I think I have it.. I multiplied the coordinates by 2 and got.. V 12 4 W 4 8 X 6 4 Y 6 10 Here is my question of the previous post.. The coordinates of quadrilateral VWXY Are given below. Find the coordinates of its

AP Chem
Determine the amount of a precipitate produced when 10mL of a 0.1M silver nitrate solution is mixed with 10mL of a 0.1M calcium chloride solution.

Trig
What are the focus and directrix of the parabola represented by the equation:8(y6)=(x+2)squared?

Physics
A car travels at an average speed of 100km/hr what distance does it cover in 5min.hint speed=distance/time

maths
in a twodigit number the tensdigit is 2 more than the units digit.if the digits are interchanged the sum of the new number and the original number is 88.what is the original number

math
How do you find the function rule of x , and y, if you have both negative and positive integers.

science
If a penny prior to 1982 weighted 3.1 grams and a current one weighs 2.5 grams how many pennies weighing 3.1 and 2.5 will I need in a combination of ten in total to have 25 grams??

Math
I need help

Maths
The product of two consecutive positive integers is added to the larger of the two integers. Prove that the result is always a square number. Thank you for your help.

Physics
Two spherical objects have masses of 3.5 x 10^7 kg and 6.5 x 10^9 kg. Their centers are separated by a distance of 125000 m. Find the gravitational attraction between them.

calculus
suppose that c(x)=3x^3  12x^2 +9000x is the cost of manufacturing x items. find a production level that will minimize the average cost of making x items

Math
An automobile assembly runs for 9 3/4 hours each day. Workers work 3/4 hours shifts. How many shifts are in each day? i put 9 3/4 divided by 3/4. But that's a decimal then i tried 3/4 divided by 3/4 but thats worse. Help me please.

chem
If 1.83 moles of an ideal gas has a pressure of 1.30 atm, and a volume of 29.85 L, what is the temperature of the sample in degrees Celsius?

Maths
Within a square land, Asmo cut out a rectangular land with width of 10 meters (as shown below), the remaining land’s area is 1575 square meters. The area of cut out rectangular land is ______ square meters.

Math
Two hot air balloons are in flight above a field. The first Balloon is 30 meters above the ground rising 25 meters per minute. The Second Balloon is 300 meters above the ground descending 20 meters per minute. When will the 2 balloons be at the same

Chemistry Lab
So I have a lab exam tomorrow and our instructor said that one of the questions would be as follows: Prepare 100mL of 0.03 M Copper Sulfate, beginning from copper sulfate pentahydrate. Calculate the exact molarity to 3 sig figs. Alright so I understand how

Maths
in a fraction the numerator exceeds 3 denominator, find the village knowing that decreasing 6 both terms of the fraction you get a new fraction that exceeds 9/20

Physics
A 1 kg mass attached to a 1 m string is rolled around in a horizontal circular path with an angular velocity of 100 RPM what is the tension of the string? Please show how you got your answer.

math
according to arrow impossibility theorem ,it is possible for voting method to satisfy every fairness criteria that the texbook discussed?

Super teacher worksheet
Liam bakes two doze thank giving cookie he put an equal number of cookiein three boxes how many cookie are in each box

English
Why are these quotes a metaphor. Quotes are from "shooting an elephant." They were watching me as they would watch a conjurer about to perform a trick. Standing in front of the unarmed native crowd seemingly the leading actor of the piece

English
You will see what kinds of things you can do in each city.  Does 'see' mean 'understand' or 'take a look at with eyes' in this sentence?

computer science
In a particular phase modulation system, each symbol is able to represent 4 bits. What sort of PSK is being used?

computer science
A GPS satellite develops a fault whereby it moves into an orbit 19 500 km above the Earth’s surface and also emits a weak signal whose power is only 24 W. What will be the power per square metre of the signal received on the Earth’s surface? Choose the

Motion
A body weighing 150 N, moves with simple harmonic motion. The velocity and acceleration of the body when it is 200 mm from the centre of oscillation, are 5 m/s and 20 m/s2 respectively.Determine (a) amplitude of motion ,no. of vibrations per minute,

Bsc
we use HCL INSTEAD OF H2SO4 108Kg. HCL Qty?

Chemistry
To what pH should you adjust a standard hydrogen electrode to get an electrode potential of 0.122 V ? (Assume that the partial pressure of hydrogen gas remains at 1 atm.)

mathmechanics 1
i solved a)u=2i and b)r=2t+1/2[0.4(i) 0,2(j)] at c) i don t have idea how to solve At time t = 0, a small boat is at a buoy travelling due east with speed 2 ms−1 . The boat experiences a constant acceleration of (– 0.4i + 0.1j) ms−2 . The unit

algebra
How do I work out what the x and y equal in this equation: 4 over x plus 5 over y equals 21

Maths
In our math class, we didn't really go through alot on The circle so I still have some problem about the question assigned to me : Two circle C1 and C2 have equations x^2 + y^2 +4x  3 = 0 and 2x^2 + 2y^2 +4x 6y + 3 =0 respectively. Show that, for all

English
1. Korea drew the game against Japan. 2. Korea tied the game against Japan. 3. Korea and Japan drew in the game. 4. Korea and Japan tied in the game. 5. The game between Korea and Japan ended/finished in a draw. 6. The game between Korea and Japan

English
1. Please be quiet and draw you attention to me. 2. Please be quiet and pay you attention to me. (Can we use 'pay' instead of 'draw'? Do you have some other similar verbs?)

math
if m1/m find m21/m2

Physics
in air, an object weights 15N. when immersed in water, it weights 12N. when immersed in another liquid, its weights 13N. determine the density of the object, the relative density of the object and the density of the other liquid?

Calculus
Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim (tan(7x))^x x~>0

very hard PHYSICS QUESTION
Consider a solid ball of mass m = 50g and is placed on a long flat slope that makes an angle of 30° to the horizontal. The ball was initially at rest and was then released such that it rolled down the slope without slipping. With a detailed explanation of

English
1. Their mother dressed the children every morning. => The children were dressed every morning by their mother. 2. He had dressed himself in the latest fashion. => He was dressed in the latest fashion.  active voice => passive

MATHS
Find all possible solutions in the range 0°≤ x ≤ 180° of the following equations: (a) cos x = sqrt(2) / 2 (b) tan x = sqrt(3) / 3 (c) sin x = sin60° (d) cos x = 1/2 (e) sin x = 1/2

general
Describe the relationship between attachment, resilience and regulation