Wednesday
February 10, 2016

Posts by Tyler

Total # Posts: 760

Physics
John is driving at a constant speed of 20.0 m/s when he passes Jane, who is traveling in the same direction at 15.0 m/s at the moment that John passes her. If Jane is accelerating at 2.0 m/s2, how far will Jane drive before she catches up to John? How much time passes from ...
April 15, 2014

Physics
Draw each of the following vectors on graph paper, then find the x- and y- components. Make sure to include units in your answers for the components. a) ⃑r = (65 m, 30degrees above the positive x-axis) b) ⃑v = (125 m/s, 40degrees below the negative x-axis) c) &#...
April 7, 2014

Calculus
negative one third t minus 1
April 7, 2014

Calculus
Two full 48-gallon tanks begin draining at t = 0. Tank Alpha's volume is changing at a constant rate of -16/5 gal/min. The rate at which Tank Bravo's volume is changing is given by r(t)=-1/3t-1 gal/min. a) How much water is in each tank after 5 minutes? b) Which tub ...
April 7, 2014

Physics
A cubic meter of some material has a mass of 6400 kg. The block of material is lowered into a lake by a strong cable until the block is completely submerged. Draw a free-body diagram for the block. (Do this on paper. Your instructor may ask you to turn in your work.) Find the ...
March 31, 2014

science
30 cubic meters of argon gas are kept under constant pressure. The gas is heated from 10.0 degrees Celsius to 293 degrees Celsius. What is the new volume of the gas?
March 18, 2014

physics
A DC circuit has a single battery of voltage V = 10.0 V attached to a resistor R = 100 Ohms. If the voltage is increased to 20.0 V, then by what factor does the power emitted by the resistor increase?
March 5, 2014

Physics
A 2 kg ball is rolled down a hill 25 m tall. When it reaches the bottom of the hill it is traveling at 15.1 m/s. How much energy was dissipated due to friction?
March 4, 2014

physics
an unpolarised light is incident on the boundary between two transparent media. State the contition when the reflected wave is totally plane polarised.
March 3, 2014

Physics
It takes 56 J to push a block 4 m. If the force is in the same direction as the displacement, what is the force on the block?
March 3, 2014

English
Presents I think
February 19, 2014

Please Help with 2 Physics Problems???
1) In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force FA of magnitude 207 N, and Charles pulls with force FC of ...
February 17, 2014

Math
Thank you Reiny
February 16, 2014

Math
Can someone help me to solve this scientific notation equation. (5.7 x 10^3)^-^4
February 16, 2014

Physics
A car accelerates from 12m/s to 25m/s in 6.0s. What is its uniform acceleration? How far did it travel in this time?
February 11, 2014

Physics
A plane flies 407 km east from city A to city B in 44.0 min and then 871 km south from city B to city C in 1.90 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d) direction of its ...
February 10, 2014

Statistics
Determine if the following are probability distributions (if no, state why). a. X 3 6 9 12 15 P(X) 4/9 2/9 1/9 1/9 1/9
February 7, 2014

algebraic expressions
write a situation that can be represented by the algebraic expression 3.25d
February 6, 2014

Statistics
What does the empirical rule say about the proportion of players who are between 62.7 inches and 75.3 inches? c.
February 2, 2014

Pre-Algebra
The treasurer of the student body at a college reported that the receipts from a recent contact totaled $916; Furthermore, he announced that 560 people had attended the concert. Students were charged $1.25 each for admission to the concert, and adults were charged $2.25 each. ...
February 1, 2014

Science
which of the following do rain forests and taiga have an common? A. similar average annual rainfalls. B. similar average annual temperature C. heavily populated with trees. D. tend to occur in similar latitudes
January 30, 2014

Math
Yes
January 25, 2014

Math
Snooki has a total of 25 quarters and pennies in her pocket. She has $2.32 altogether. How many quarters and pennies were sold?
January 25, 2014

Astoria Park
1+2+3+6 then 1+2=3 then 3+3=6 final answer 6+6 = 12 as the next perfect number
January 15, 2014

World History ;-;
Which of the following was a result of the development of Christianity in the Byzantine empire?
January 13, 2014

Stats
Suppose the following data are selected randomly from a population of normally distributed values. 42 51 43 48 41 57 54 39 45 48 45 39 46 Construct a 95% confidence interval to estimate the population mean. Round the intermediate values to 2 decimal places. Round your answers ...
December 19, 2013

biology
C
November 28, 2013

Chemistry
1) A dog has the same mass for 3 years. State whether this represents an equilibrium or steady state situations, and give your reasons. I'm not sure if I got this question right... I think this is a steady state because the dog is opened to the environment where oxygen is ...
November 25, 2013

math ms sue please help, PLEASE!!!!
c & d
November 13, 2013

Chemistry
For the reaction Zn(OH)2(s)+4CN-(aq)->Zn(CN)4 2-(aq)+2OH-(aq) find [CN-] when 8.5 g of Zn(OH)2 are dissolved in 1.00 L of solution.
November 10, 2013

math help plzzzz!!!!
5 is wrong
October 30, 2013

physics
a .150kg object tied to a string is whirled in a horizontal circle ata constant angular speed of 3.50 revolutions per second. the tension is the string is 75newtons. what is the length of the string?
October 27, 2013

Math
Nooooooooooob
October 23, 2013

Algebra
I would be happy to inform you that t=23
October 21, 2013

Can someone check these answer for me?
1. B 2.B 3.D 4.D 5.A
October 17, 2013

Can someone check these answer for me?
is someone on
October 17, 2013

science help plzzz
PLEASE HELP
October 17, 2013

science help plzzz
1. A 2.D 3.B 4.C 5.B
October 17, 2013

Chemistry
yellow
October 10, 2013

Physics
A "swing" ride at a carnival consists of chairs that are swung in a circle by 19.8 m cables attached to a vertical rotating pole, as the drawing shows. Suppose the total mass of a chair and its occupant is 144 kg. (a) Determine the tension in the cable attached to ...
October 3, 2013

Physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.44 m/s, and an 64.3-kg person feels a 277-N ...
October 3, 2013

Physics
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum and collect at the ...
October 3, 2013

chemistry
Calculate the number of hydrogen molecules formed when 5.6 mL of ammonia at STP is decomposed by the following reaction: ___NH3 „³ ___ N2 + ___ H2
September 25, 2013

chemistry
Calculate the volume of oxygen at STP required to burn 3.7 kg C3H6O2 producing CO2 & H2O:
September 25, 2013

SAT prep math
Maria has two piggy banks. In one piggy bank she saves dimes and in the other she saves nickels. At the end of each month she saves 40 nickels and 30 dimes
September 18, 2013

Physical Science
a student is given a 10 gram sample of gold that has a density of 19.32g/cm3. The student is then given a 5 gram sample of an unknown substance and told the density of the unknown substance is 19.32g/cm3. What is the unknown substance
September 10, 2013

Social Studies
What is the answer
September 10, 2013

chemistry
determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced equation CaO + C --------CaC2 =CO2
August 26, 2013

chemistry
in the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 4.59 mol of magnesium and 4.59 mol of hydrochloric acid are reacted, how many moles of magnesium chloride are produced ?
August 26, 2013

science
42.27m/s
July 26, 2013

Please Help with calculus
How to evaluate x=0 and dx=-.03? I got(1/9)e^(x/9)dx as dy of e^(x/9)and I don't know how I should plug them in.
June 26, 2013

Calculus
Let y=e^(x/9). a) Find the differential dy. dy = b) Evaluate dy if x=0 and dx=−0.03. dy =
June 26, 2013

Calculus
Find the linear approximation L(x) of ln(x) at the point a = 12.
June 25, 2013

Calculus
Find the equation of the tangent line to the curve (piriform) y^2=x^3(4−x) at the point (2,16−−ã). a. Find dy/dx at x=2. dy/dx= b. Write the equation of the tangent line to the curve.
June 25, 2013

Calculus
Find the linear approximation L(x) of ln(x)at the point a = 12.
June 20, 2013

Calculus
The radius of a circular disk is given as 51 cm with a maximum error of 0.04 cm. Use differentials to estimate the maximum error and percent error in the calculated area of the disk.
June 19, 2013

english
please answer the last question
June 11, 2013

english
give two examples in the giant's house for character, theme, plot, style, point of view
June 11, 2013

chemistry
How much carbon dioxide gas is there in a 34.3 L container at 34.0◦C and 5.49 atm? answer in grams
June 9, 2013

Calculus
Evaluate the following limit, if it exists: lim h-->0 ((sqrt9+h)-3/(h)
May 31, 2013

Calc
Oscar Corporation is planning to construct an elliptical gate at its headquarters. The width of the ellipse will be 5 feet across and its maximum height along the center will be 3 feet. The company wants to place two bright spots at the foci of the ellipse. How far from the ...
May 1, 2013

math
kate cut a pizza into fourths. karl cut a pizza of the same size into sixth. After they each ate some pizza, they had the same fraction of pizzas left. What fraction of each pizza was left?
April 23, 2013

pre calc
Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A= ??.
April 14, 2013

math
Find all solutions of the equation 3sin^2 x -7sin x +2 = 0 in the interval [0,2\pi). The answer is x_1= ? and x_2= ? with x_1<x_2.
April 14, 2013

since and cosine please help me!
that is not right according the program
April 14, 2013

since and cosine please help me!
Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???
April 14, 2013

sine and cosine
Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?
April 14, 2013

cosine and sine HELP!
Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???
April 14, 2013

math
Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?
April 14, 2013

chemistry
Thimerosal is an organic compound (gram molecular mass = 404.8 g/mol) used to inhibit bacterial growth. A .100%solution of thimerosal is sometimes used as an antiseptic. Assume that this solution has a density of 1.00 g/mL. A. how many grams of thimerosal are found in .500 g ...
April 7, 2013

math
Simplify and write the trigonometric expression in terms of sine and cosine: sin x +(cot x)(cos x) = 1/f(x) f(x)= ?
April 7, 2013

math
If tan^2(t) - sin^2(t) = sin^a(t)\cos^b(t), then the positive power a = the positive power b =
April 7, 2013

math
2a2+5a-25=0
April 4, 2013

Chemistry
You did the easy part... wheres the algebra to find x?
March 15, 2013

phisics
If You do 100 j of work to elevate a bucket of water,what is its gravitational potential energy relative to its starting position?
March 14, 2013

angles
A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 25 degrees. From a point 1225 feet closer to the mountain along the plain, they find that the ...
March 10, 2013

trig
The radian measure of an angle of 182 degrees is ?
March 6, 2013

math
The radian measure of an angle of 182 degrees is
March 5, 2013

Pre calulus only 15 min left HELP!
((ln(x))^1/2)/(ln(x^1/2))=6 solve for x
March 3, 2013

Physics
500 calories of heat is added to 2.0 g of water at 80 degrees Celsius. How much steam is produced?
March 3, 2013

math
write the metric unit of length that is reasonable. a door is about 1 blank wide
February 25, 2013

Math
The sum of twice a number and another number is 24. The difference of twice the first number and the other number is 12. Which system would model this situation, and what is the solution?
February 22, 2013

math
what is answer of 7 cubed
February 19, 2013

math
A certain brand of cereal costs $3.25 per box before sales tax is added. When you buy 5 or more boxes of this cereal you receive 1 additional box for free. What is the average cost per box of cereal for 6 boxes before sales tax are added ? Please helpp
February 5, 2013

English
What is the significance of the repetition of the word absurd in the play?
January 22, 2013

math
jeff bought 6 pairs of shoes and 4 jerseys for 560. Jersies cost 1/4 price of one pair of shoes. Find price of shoes and price of jersey
January 15, 2013

Chemistry
1. Pentane gas (C5H12) combusts with oxygen gas (O2) to form water (H2O) and carbon dioxide (CO2). Write a balanced chemical equation for this reaction and explain the scientific principle (statement) that requires the balancing of an equation to make it conform to reality
January 15, 2013

math
A group of 132 students chose baseball and soccer as their favorite sports in the ratio of 3:8. How many students chose soccer as their favorite sport?
January 14, 2013

physics
a mechanic uses a chain and bloc pulley to lift a 875-kg engine 4.0 m to the top of the garage. the downward force on the chain over the 4.0 m distance is 5.0 x 10^4 N. a)calculate the work done in raseing the motor b)how much useful work was done c)what is the inefficiency of...
January 12, 2013

science
When scientists use one of their five senses to gather information, they are?
January 8, 2013

math
sam cut a pie into equal slices. there are only 3 slices left. the angle measures for the three slices is 72 degrees. how many slices did sam cut the pie into?
January 7, 2013

math
At a festival, 2/7 of the number of girls was equal to 3/5 of the number of boys. There were 165 fewer boys than girls. How many children were at the festival in all?
January 1, 2013

math
Madison spent 5/8 of her savings on a microwave oven & a refrigerator. She used 4/7 of the amount she spent to buy the refrigerator. The refrigerator cost $280 more than the microwave oven. How much savings did Madison start with?
January 1, 2013

Science
Nevermind, I was looking and I just found the help I needed :)
December 17, 2012

Science
If you are asked to determine an object’s speed, what information must you have? A.distance and period of time B.distance and change in position C.period of time and direction D.distance and direction
December 17, 2012

physics
220
December 7, 2012

Phusics
Does an object moving in the y direction have KE? If so if you apply a force in the Y direction will the velocity increase?
December 2, 2012

physics
You have a conversation of EP and with that you have the formula: Mbull*Vi+Mwood*Vi=(Mb+Mw)Vf .o15kg*Vi+15*0=(.015+15)Vf Mult. by 0: .015kg*Vi=(.o15+15)Vf So we can't solve that (i guess we cant curse here) but we move on to where the spring compresses, there is ...
December 2, 2012

physics
You have a conversation of EP and with that you have the formula: Mbull*Vi+Mwood*Vi=(Mb+Mw)Vf .o15kg*Vi+15*0=(.015+15)Vf Mult. by 0: .015kg*Vi=(.o15+15)Vf So we can't solve that but we move on to where the spring compresses, there is conservation of TME so: 1/2(Mb+Mw)Vf^2...
December 2, 2012

English
Out side
November 29, 2012

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