# Posts by andrew

Total # Posts: 1,195

physics
zero, by newton's 2nd law. having constant velocity, there is no change in its momentum over time. hence there is zero resultant force on it, and it has zero acceleration.

physics
Let the vector be V. Vsin(51.6)= 494. for the x-component, V(x) = Vcos(51.6) Try drawing the y,and x axis, the vector V, and a right angled triangle.

physics
it becomes slower as by newton's 2nd law, it undergoes a change in momentum, assuming its mass is kept constant. a resultant force acts in the opposite direction of its motion. hence it retards.

physics
acceleration = (final velocity minus initial velocity)/time taken. the formula is based on newton's 2nd law, which states that the rate of change of momentum of an object is directly proportional to the resultant force acting on it. F = m(v-u)/t ma = m(v-u)/t hence, a=(v-u)/t

AP calculus
Think about how you can locate these three consecutive terms. What is the first term, and the common difference? The sum of an AP for the first n terms is given by S(n) = (n/2)(2a+(n-1)d) where a = -7, d = 4 So lets say the 3 consecutive terms are the 14,15 and 16th term. to ...

College Physics
A wire P has resistance R. If the wire is stretched and its length is increased by 10%, what would be the percentage change in its resistance? (Assume the density of the wire remains constant) A) - 10% B) 0 % C) 10% D) 20% My thoughts: Since resistance is R = resistivity x ...

Physics
1. Resolve the initial velocity. 2. Find the time taken for the horizontal velocity of the ball to hit the wall. 3. Using the value of the time found in 2,find the height reached by the vertical velocity of the ball.

english
All of the following are characteristics of humanism except?

maths
1/2 ( 2x + 9 ) x 10 = 85

physics
1. You are planning to build a mini hydro power plant. A river near your home is w = 4.0 m wide and h = 1.0 m deep. You measure the water flow to be v = 1.50 m/s over the brink of a waterfall H = 10.0 m high. The company that makes the turbine advertises e = 25% efficiency in ...

math
Jacie is considering a job that offers a monthly starting salary of \$3000 and guarantees her a monthly raise of \$180 during her first year on the job. Find the general term of this arithmetic sequence and her monthly salary at the end of her first year/

What is the sum of the six -three digit numbers that have the digits 1,2, and 6?

Science
ssssssssssssssssssooooooooooooooooooooooooo rrrrrrrrrrrrrrrrrrrrrr uuuuuuuuuuuuuuuuuuuuuu sssoooooofffffffiiiiiaaaaaaaa

Science
i nnnnnnneeeeeeeeeeedddddddddddddddddddd help people,,,,,,,,,,,,,,,,, soooooooooo plzzzzzzzzzz hhhhhheeeeeeeelllllllllppppppp mmmmmmmmmeeeeeeeeeee

Science
when you ride in a train that passes a train moving in the opposite direction, the other train appears to rush past you at a greater speed than if you were watching from a parked car at a crossing. how does the speed of your train affect your impression of the passing train&#...

english
maybe its because people were bullying them, they want to take out their revenge on other people!!!!!!!! i hope that i helped

U.S History
thanks

U.S History
What influence did the American Revolution have around the world?????

U.S History
Describe how the french navy helped George Washington at Yorktown. Thank's

Spanish
Can someone help translate this proverb to English? -------- La casa de huérfanos de Lima fue fundada en 1597 por Luis Ojeda el Pecador, bajo la advocación de Nuestra Señora de Atocha. Lo que movió al caritativo varón a ocuparse de los exp&...

U.S History
thanks for the help!!!!!!! =']

calculus
Find the derivative of the function y(x)=c^x+x^c. Assume that c is a constant.

physics
A person pushes horizontally with a force of 170 N on a 68 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.22. (a) What is the magnitude of the frictional force? (b) What is the magnitude of the crate's acceleration?

math
Find two numbers the exact answer is between. 3 X 567

Civics
im suppose to write an answer to that prompt but i have no idea what the question is answering so i cant think of what to write

Civics
explain how the relationship between the american colonists and great britain affected the development of the underlying priciples and ideas in the declaration of independence and in the new state constitutions in north america in the eighteenth century

STATS
.6

pre algabra
write 20h/24h in its simplest form

Physics
A raindrop of mass 57.40 mg (that is milli- gram) falls in quiet air (no wind). Due to the air resistance force, the drop has a maximum velocity called the terminal velocity of magnitude, 17.50 m/s, which is reached high above ground. What would be in N the weight of the rain ...

Math
A landscaper is designing a garden with hedges through which a straight path will lead from the exterior of the garden to the interior. If the polar coordinates of the endpoints of the path are (20, 90°) and (10, 150°), where r is measured in feet, what is the equation...

Math
An auditorium has 1600 seats. At a ticket price of \$6, the owners can sell 1200 tickets. For each 25 cent increase in price the tickets sold reduces by 25. What price should the owners set to maximize the income?

Math
How do you write the expression for...the sum of the quotient of p and 14, and the quotient of a q and 3

American Democracy
What is Devolution

college writing
I like baseball, I can learn about the sport and it is also fun.

Engineering Dyanamics

Science
If it takes 35s for the tughboat to increse its speed uniformly to 25 km/h, starting from rest. The barge has a mass of 75Mg. The propeller provides the propulsion force F which gives the tughboat foward motion, where as the barge moves freely. Determine the force of the rope ...

math
What is the projected population over a period of 340 years in a region which begins with three couples?

Calculus
i got V= 4x^3-72x^2+288x V=12x^2-144x+288=0 Then I foiled that and my answers were x=6 and x=12. Clearly I have no idea what I'm doing, I have a test in my class on wednesday and I need to be able to make sense of this in my homework due tomorrow

Calculus
Would that make the dimensions x=6 and 12? or did I do that wrong?

Calculus
an open box is made by cutting out squares from the corners of a rectangular piece of cardboard and then turning up the sides. If the piece of cardboard is 12 cm by 24 cm, what are the dimensions of the box that has the largest volume made in this way?

Algebra 1
Can someone help me do this problem? (The square root of x squared minus 11) + 1 = x.

Chemistry
Little confusing!! I need help PLZ!!! Two half cells in a galvanic cell consist of one iron (Fe(s)) electrode in a solution of iron (II) sulphate (FeSO4(aq)) and a silver (Ag(s)) electrode in a silver nitrate solution. a. Assume the cell is operating as a galvanic cell, state ...

physics
a 20 pound inch per hundred psi motor operates with a torque load of 500 pound inches. what is the operating pressure?

Probability
1 a) What is the probability of you drawing three face cards from a well shuffled deck if you keep each card you draw? Since there are 12/52 face cards would it be first 12/52, then 11/51 then 10/50? I am confused about this b) What is the probability of you drawing three face...

Probability
How many different three-digit numbers can be formed using the digits 1,3,5,7 and 9 if the digits may be repeated?

Spelling
homesick

Find the sum of the first 40 terms of the arithmetic sequence: 13, 19, 25, 31, ...

math
if you need 10 quarts of juice and have 2 gallons,do you have enough juice?

math
What is more? 3 quarts of juice or 10 cups of juice?

Economics
if the government lowers taxes the republican party will be very excited and it will be as if the republicans are the leaders and democrats are not having a change to make their own decisions.republicans always have wanted to not have to pay taxes.

science
What do kids do on Make a Difference DAY?IS IT A POPULAR HOLIDAY?

math
excuse me you just answered someone's question who posted after me shouldn't you try to answer mine? Also, I still need help on this question.

math

math
a dollar bill has an area of 15.86 square inches. If a dollar bill is 2.6 inches long, how wide is it? Also, please explain how you got the answer because i am very confused.

explain the stages in the retail life cycle and the different strategies that a manager can employ inorder to maximise returns

Math
21 3/5

Math
A boat moves 7 kilometers upstream in the same amount of time it moves 17 kilometers downstream. If the rate of the current is 9 kilometers per hour, find the rate of the boat in still water.

social studies
Why do people need government?

Science
no

Science
Where can I find AP Environmental Science old AP exams? I need to study.

chemistry
210 210 Pb --> Bi + ? 82 83 60 0 Co --> ? + e 27 -1 I need an explanation on how to find the missing product.

calculus
@Damon : Appreciate it sir. u are a life saver. i was on track and needed a kick . thanks alot.

calculus
1. Consider a projectile, say a frictionless teddy bear, which is thrown at an angle of theta with an initial velocity of v0.  a) For a fi xed angle, and the maximum height of the teddy bear.  b) Calculate the distance that the teddy bear travels before ...

calculus
6. A parabaloid with height h and radius r has volume 1/2 pieR^2H. Consider a parabaloid-shaped water tank with height of 7m and radius of 4m. If V is the volme of water in the tank and h is the depth of water, find the relationship between dV/dt and dhdt. How is the ...

math/physics
@ reiny if dx/dt = 0 then y should also be zero

math/physics
if dx/dt = 0 then y should also be zero

math/physics
5. Consider a particle moving counter-clockwise around the ellipse x^9/9 +y^2/4 = 1. Find a relationship between dy/dt and dx/dt What are the rates of change of y and x at the times when the other variable isn't . changing at all?

munir
its bit of maths and physics. ms .sue. use of function

biology
A man with normal color vision marries a woman who is colorblind. What percentage of their sons would be colorblind, what percentage of their daughters would be colorblind, what percentage of their daughters would be carriers of the colorblind gene?

physics
I'm trying to find the pressure exerted by an object that has a force of 180 newtons on an area of 10 square centimeters

US History
Question 1 (Multiple Choice Worth 1 points) Around the turn of the century, African Americans moving to cities in the North experienced substantially less racism than did African Americans in the South. more opportunities to become skilled workers than they had two decades ...

programming 2
Write a program that inputs a word representing a binary number (0s and 1s). First, your program should verify that it is indeed a binary number, that is, the number contains only 0s and 1s. if that is not the case, your program should print a message that the number is not a ...

calculus
Complete the identity. sec(x)sin(x)/tan(x) - 1 = 0

Math
What is the formula for the area of a triangle and trapezoid?

math
What are the first and third quartiles of the box and whisker plot above? 0 15 110 225

Statistics
What type of data must you collect to conduct a t-test, why?

Statistics
1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and the median are not equal. d. The graph of a ...

English 2
Republicans favor business. Teenagers are seeking their own identities. Top students work hard. But I don't like where I can go with any of them, and I can't think of anything more!

English 2
Need help with this-- "In this exercise you'll write an essay supporting a generalization you've stated about some topic." Any ideas for generalizations?

english
All I see is that you need a comma after "your agent."

Math
Thanks

social studies
Mercenary

calculus
80000

Algebra
The \$75 cost for a party was to be shared equally by all of those attending. Since five more people attended than was expected, the price per person dropped by 50 cents. How many people attended the party?

pre-algebra
the length of a rectangle is 10 inches more than its width. what are the dimensions of the rectangle if its perimeter is 80 inches?

Chemistry 125
What is the maximum mass of water that can be released by heating a 6.895 g sample of nickel(II) sulfate heptahydrate?

Physics
1) Charges of +4uC and -6uC are placed at two corners of an equilateral triangle with sides of 0.10m. At the third corner, what is the electric field magnitude created by these two charges? A]4.5 x 10e6 N/C B]3.1 x 10e6 N/C C]1.6 x 10e6 D]4.8 x 10e6 2)A +2.0 nC pont ahrge ...

math
All 26 letters of the alphabet are written on cards and shuffled. If one card is pulled out randomly, find the probability. (note Y is not considered a vowel for these problems) P(A or Z) =

algebra II
factor completely: 8h^3-125

AP Chem
For the system CO(g) + H2O(g)<-->CO2(g) + H2(g) Kp is 1.6 at 900 K. If 0.400 atm CO(g) and 0.400 atm H2O(g) are combined in a sealed flask, what is the equilibrium partial pressure of CO2(g)?

Physics
1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain

Physics
508.4 N [2(2.0m)/6.2m]x788.0N

Chemistry
Chemical equation of: 1.Digesting of food 2.Fermentation of Wine 3.Burning of fuel

Algebra
This question is unsolvable.

Math need help now!!!!!
We perform the experiment "deal a five card poker hand". What is the probability that you are dealt a hand that contains the Ace, Two, Three, and Four of Diamonds? Question 22 answers 4 / 2,598,960 48 / 2,598,960 1 / 2,598,960 1 / 52

Chemistry
How to find the marked volume in graduated cylinder?

Chemistry
when the beaker has rated capacity of 10 ml, does it mean that it has to be filled to the brim?

Math
If you toss a pair of dice 1,000 times, how many times would you expect to get a sum of 12 as the result? 1.)about 12 times 2.)about 27 times 3.)about 36 times 4.)about 100 times The lesson doesn't show me how to work this. Whats the formula?

American Government
Which of the following is NOT a key role of the President? to decide if laws are unconstitutional perform many ceremonial duties command all military offices during both peace time and during war responsible for executing the nation's laws I Think it's 3 or 4 not sure ...

American Government
Thanks!

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