Saturday
February 13, 2016

# Posts by Trevor

Total # Posts: 189

Chemistry
concentration of ammonium chloride produced when 21.0 mL of 11.9 M HCL and 18.0mL of 7.50M NH3 are mixed?
January 23, 2016

Chemistry
concentration of ammonium chloride produced when 21.0 mL of 11.9 M HCL and 18.0mL of 7.50M NH3 are mixed?
January 23, 2016

Math
Two students are playing a math game. The object of the game is to make the least possible number by arranging the given digits inside value bars on a card. In the first round, each player will use the digits 3, 5 and 7 to fill in the card. One student arranges the numbers on ...
October 28, 2015

Algebra
there are 24 candies in a box. there are 3 times as many candies with nuts as candies without nuts. how many candies with nuts are in the box
July 25, 2015

Physics
I know this is so simple but for some reason I am having a brain fart... A 20 C charge experiences a 2 N force in an electric field. What is the strength of the electric field? Please help and laugh later thank you lol
May 1, 2015

Physics
Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for?
February 12, 2015

math
A set is known to have 255 proper subsets. How many distinct elements does this set have?
December 9, 2014

physics
A 5 ft chain is sitting on a table with 2 ft hanging off (3 ft sitting on table). The table is 4 ft high, and the chain slides frictionless off the table. The chain weighs 15 lb. What is the velocity of the chain when it first hits the ground.
November 21, 2014

Philosophy
Sorry I didn't word my question properly. I understand that Kant believes a person must act on a principle that applies to all other rational beings. I'm confused on how his views that rational beings have dignity and are autonomous relate to his theory of categorical ...
September 17, 2014

Philosophy
Can someone please explain Immanuel Kant's view on ethics.
September 17, 2014

life science
Thy ar among the mst valueable sources of information about the earths history
July 31, 2014

Physics
How much work is done by the force F⃗ =(− 3.0 i^− 7.6 j^)N on a particle that moves through displacement Δr⃗ = 3.6 i^−2.0j^m?
June 5, 2014

Physics
A 50 g ball of clay traveling at speed v0 hits and sticks to a 1.0 kg block sitting at rest on a frictionless surface. A) What is the speed of the block after the collision? B) What percentage of the ball's initial energy is "lost"?
June 2, 2014

Physics
A) What is the kinetic energy of a 1200kg car traveling at a speed of 30 m/s (≈65mph)? B) From what height would the car have to be dropped to have this same amount of kinetic energy just before impact?
June 2, 2014

Physics
A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but does not go through) it. After the impact, the block–bullet combination slides 6.5 m before coming to rest. If the coefficient of kinetic friction...
March 4, 2014

Mathhh, HELP!
Find the LCD: a) (12/55c^6) (4/11c^9) b) (9/4c+12) (5c/5c+10) c) (9x/x^2-4x+4) (5x/x^2-5x+6) d) (7/x) (3/42-7x) (x/x^2-36)
October 29, 2013

Math
what is the ratio of 4 engines to 18 box cars....trying to help my son in math???
September 23, 2013

math
x=2 m=21 w=-12
May 30, 2013

Pre-Calculus
A gardener has 72' of edging. She wants to use it to enclose a 125 square foot rectangular area; she does not have to use up all of the edging. What are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: If the length of the ...
May 30, 2013

social studies
What is the total capacitance of capacitors connected in series, C1=444F, C2=621F
March 25, 2013

Math
You simply factor out a 2x to get: 2x(3x+7)
February 28, 2013

Calculus
When there is a negavtive exponent you need to flip the term to makee it positive so the problem should be written as: H(x)=(x^4-2x+7)[(1/x^3)+(2/x^4)] Then you simply multiply the two groups to get: H(x)=[(x^4-2x+7)/(x^3)]+[2(x^4-2x+7)/(x^4)] Then simplify the second fraction...
February 28, 2013

Calc
Possible derivation: d/dx(f(x)) = d/dx(log(x) csc(x)) The derivative of f(x) is f'(x): f'(x) = d/dx(log(x) csc(x)) Use the product rule, d/dx(u v) = v ( du)/( dx)+u ( dv)/( dx), where u =csc(x) and v = log(x): f'(x) = log(x) (d/dx(csc(x)))+csc(x) (d/dx(log(x))) The...
February 28, 2013

Calculus
I dont know if this is right because if you are using x for the distance the man is away from the light post then you cant set x equal to the rate at which the man is walking.
February 28, 2013

Calculus
A man is 6ft tall and is walking at night straight toward a lighted street lamp at a rate of 5 ft/sec. If the lamp is 20 ft above the ground, find the rate at which the length of his shadow is changing.
February 28, 2013

Calculus
Water is being poured into an inverted cone(vertex down) of radius 4 in and height 10 in at a rate of 3 in^3/sec. Find the rate at which the height of the water is increasing when the water is 5 in high.
February 28, 2013

Calculus
1a. 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall? 1b. Using the data in the first part, ...
February 28, 2013

Calculus
A 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall?
February 28, 2013

Calculus
If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. Find the ...
February 28, 2013

Calculus
Calculus If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. ...
February 28, 2013

calculus
Use logarithmic differentiation: F(x)= (3x+6)^4 (x^3 -2)^5 f'(x)=
February 26, 2013

Math
I mean 12 letters not 14. Sorry
January 29, 2013

Math
I'm doing a crossword and I need a word or words that equal 14. Does Factoredbase seem correct? That is the only thing I can come up with.
January 29, 2013

Math
The number in a power that is used as a factor is what?
January 29, 2013

science
a sphere of mass 500.0g is released from point A 5m above the ground and slides down to point B 3.2m through point C 2m in frictionless wire track. (1)determine the particle's speed at points B and C. (2)determine the net work done by the force of graviy in moving the ...
January 16, 2013

Physics
A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.
November 27, 2012

Physics
A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.
November 27, 2012

A solution is found to contain 1 x 10-4 OH− ions, determine the pH of this solution.
November 16, 2012

GTA
GTA V came out no one wants to answer
October 30, 2012

Math
What inequality will equal -2 and 8?
October 23, 2012

statistics
Consider the following types of data that were obtained from a random sample of 49 credit card accounts. Identify all the averages that can be used to summarize the data.(Select all that apply) 1.Outstanding balance on each account: mode,median,mean?
September 15, 2012

Math
For what value of k does the equation x2 + k = kx – 8 have: Two distinct real roots One real root No real root
September 1, 2012

science
Did you ever finding out the answer? I need it?
August 31, 2012

math
A water skiing instructor recommends that a boat pulling a beginning skier have a speed less than 18 miles per hour. Write and solve an inequality that you can use to find the possible distances d (in miles) that a beginner can travel in 45 minutes of practice time
August 13, 2012

english
what is the historical allusion?
June 6, 2012

Math
Write the term of the binomial series. Simplify. a. The term with b^5 in (a-b)^9 b. The seventh term of (x^1/2 + x^-1/2)^8
May 4, 2012

Geometry
if a person 5 feet tall casts a 3 foot shadow and a building casts a 12 foot shadow, what is the height of building in feet?
April 24, 2012

Internal and external Tratis
March 19, 2012

Internal and external Tratis
March 19, 2012

math
for the following population of n=9 scores below. 11 12 16 15 19 16 13 17 11 range........ variance standard deviation s:
March 10, 2012

Math
if h(t) = 17.4 * 1.23^t, find t when z(t) = 144
February 19, 2012

math
6.4 - Y = 6 2/5 What is Y
February 6, 2012

Math
Find the third angle of aright angle if one of the angles measures 24 degrees
January 18, 2012

Math
Find the third angle of aright angle if one of the angles measures 24 degrees
January 18, 2012

Nickels = x Quarters = 3x Dimes = 3x-1 Plug in equation with coin values in ()... (5)x + (25)3x + (10)3x-1 = 430 5x + 75x + 30x - 10 = 430 80x + 30x - 10 = 430 110x -10 = 430 110x -10 +10 = 430 + 10 110x = 440 x = 4 Nickels = 4 (x) Quarters = 12 (3x) Dimes = 11 (3x-1) 4x5=20 N...
October 18, 2011

Science
Are floods both constuctive and destructive?
October 13, 2011

math
Thank you very much :)
September 19, 2011

math
comparing 1,272 and 1,269. Do you need to cmpare the ones digits? Which number would be the farther to the right on the number line and why?
September 19, 2011

math
How to write 3.100 in word form
September 6, 2011

algerbra
point b is the midpoint of ac. what is the value of a? c(-3a,6/7a)
September 1, 2011

math
how to write 12.37 as a mixed number
August 25, 2011

Biology
It does not involve incest.
June 22, 2011

Math
The woodpecker found 3069 bugs in a tree and ate two thirds of them.How many bugs were left in the tree?Draw a picture to illustrate the problem.
May 23, 2011

maths
The method for completing the square can be used to write the expression -2x^2+12x-5 in the form a(x+b)^2 +c, where a,b, and c are constants. What is the value of c? Thank you for any help.
May 20, 2011

MATH
Thank you, thats what my dad said but I didn't believe him :)
April 26, 2011

MATH
A paper is 28cm long, how many meters is this?
April 26, 2011

history
Im having trouble understanding the question let alone answering it.
April 18, 2011

history
Im having trouble understanding the question and the answer to it.
April 18, 2011

history
To what extent and in what ways did the great depression and the new deal alter americans perception of the legitimate role of government in the economic and social life of the united states?
April 18, 2011

Physics
A block of mass m is placed in a smooth-bored spring gun at the bottom of the incline so that it compresses the spring by an amount x_c. The spring has spring constant k. The incline makes an angle theta with the horizontal and the coefficient of kinetic friction between the ...
March 13, 2011

Physics
In a "worst-case" design scenario, a 2000-{\rm kg} elevator with broken cables is falling at 4.00 {\rm m/s} when it first contacts a cushioning spring at the bottom of the shaft. The spring is supposed to stop the elevator, compressing 2.00 {\rm m} as it does so. ...
March 13, 2011

math
thank you very much!
February 27, 2011

math
half of a gallon is a half gallon. half of a half gallon is a quart. half of a quart is a pint. half of a pint is a cup. a cup is what fraction of a quart? Is the answer 1/4?
February 27, 2011

Mary says that the greater number of counters, the greater the number of different arrays you can form. Give an example that shows that Mary is wrong.
February 9, 2011

math
one fourth of the students earned A's. There were 280 students. How many earned A's? I got 70 for the answer but what is the percentage for that? Would it be 70%?
February 7, 2011

math
duh, so easy I should have known that, thank you very much
January 24, 2011

math
a boy travels 20 km north, then 15 km south, how far is he from where he started?
January 24, 2011

Organic Chemistry
Write the mechanism for the reactions of: • (Z)-3,6-diethyl-oct-4-ene and bromine • (E)-3,6-diethyl-oct-4-ene and bromine Assign the R/S configuration for each of the products and determine the stereochemical relationship of each set of products.
January 22, 2011

Calculus
Use implicit differentiation to find the slope of the tangent line to the curve –2x^2–2xy–1y^3=–3 at the point (–1–1).
November 5, 2010

Physics
1.) ((m*v^2)/r1)+ma
November 4, 2010

Physics
Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal to the distance fallen...
October 22, 2010

Calculus
If f(x) = 2 √x, use the definition of derivative to find f′( x )
October 21, 2010

Calculus
Anyone?
October 18, 2010

Calculus
(1 pt) If f(x) = 2 √x, use the definition of derivative to find f′( x ).
October 18, 2010

Calculus
If 12x − 52 ≤ f(x) ≤ x2 + 4x − 36 determine lim x→ 4 f(x) = What theorem did you use to arrive at your answer?
October 15, 2010

Finance Question
Nathans Hot Dog Corp has projected the following sales for the coming year: Q1 Q2 Q3 Q4 Sales $700$ 850 $950$ 1,050 Sales in the year following this one are projected to be 17 percent greater in each quarter. Calculate payments to suppliers assuming that Nathans places ...
October 11, 2010

melissa collected three kinds of autumn leaves ,oak,elm and maple.she has 2 times as many maple as elm leaves and 5 times as many oak as elm leaves .she has 32 leaves all together. how many of each kind does she have?
September 30, 2010

Math
I need to find the equation for the following (compound interest): number of years: 12 initial principal: 10000 annual interest rate: 0.03 additional investment each subsequent quarter: 500 The value in 12 years is 43074.4088874
September 30, 2010

physic
LOL CHRISTIAN YOU POSTEd THE QUESTION? NICEEEE i was anonymous above ^--- xD
September 15, 2010

chemistry
How many cm does it take to make 500ml
September 12, 2010

chemistry
How many cm does it take to make 500ml
September 12, 2010

Math
Test each number for divisibility 2,3,5,and 10? 48,960
September 9, 2010

Chermistry
5.20 moL
August 31, 2010

math
explain how you can find the sum 25+59 without using pencil and paper or a calculator. then find the sum
August 23, 2010

math
write two equations that prove the associative property is not true for the subtraction
August 23, 2010

math
the trainers took a count of the animals at the zoo. there are both birds and four legged mammals at the zoo. the trainers counted 550 feet and 155 animals on their first trip through. How many birds and mammals are there?
August 9, 2010

algebra
Put the equation in the form ax2 + bx + c = 0. Enter exponents using the caret ( ^ ). For example, you would enter 4x2 as 4x^2. 4x^2+5x=(3x-1)^2-3x^2
June 17, 2010

Science
Winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left. This is known as the a. Jet Stream b. Wind c. Weather Pattern d. Coriolis Effect
May 25, 2010

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