Tuesday
May 3, 2016

# Posts by samuel

Total # Posts: 233

if the height of a triangle is 28cm and the base is 16cm then what is the area?
April 1, 2013

Physics 11 - Dynamics
While standing on a horizontal frictionless surface a 50.0 kg student pushes against a wall with an average force of 125 N to the right for 0.110 s. Calculate the velocity of this student at 1.110 s. My answer: Vf = 0.275 m/s My solutions book has Vf = -0.275 m/s OR 0.275 m/s ...
March 19, 2013

Physics 11
If two objects weighing 5 kg and 7 kg are dropped from a height of 64 m and 36 m, respectively. What will be the ratio of times taken to reach the ground? Thanks.
March 13, 2013

Physics 11
Displacement is given by x=2+3t+4t². Find the value of instantaneous acceleration.
March 13, 2013

Physics 11
Great. Thanks a lot.
March 13, 2013

Physics 11
A man jumps from a great height and falls freely to the Earth. Another man jumps from the same height 1 s later. How much are the two men separated by, 2 s after the second man jumps? I'm not sure exactly how to tackle this question. I'm sure I'm making it more ...
March 13, 2013

scale drawing
1cm^2 ----
February 18, 2013

physics
The relative Density of an alloy is 65.(a) find the mass of a solid alloy cube of side 20cm.(b) what vol of the alloy has a mass of 13kg? Please explain in details
January 31, 2013

science
An empty relative density bottle weighs 25g.it weighs 65g when filled with a liquid and 75g when with water.caculate the density of the liquid.
January 31, 2013

algebra
Determine whether or not the relation is a function. (-3,6), (-2,7, (-1,8), (0,9)
January 26, 2013

physics
A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of the system and the ...
January 12, 2013

Math
The scale on a globe is 1/8 of an inch equals 125 miles. How many inches is the circumference of the globe if the diameter of the Earh is 7,926.41 mi?
December 17, 2012

Algebra
A rectangle is drawn so the width is 7 inches longer than the height. If the rectangle's diagonal measurement is 46 inches, find the height.
December 13, 2012

science
what is the alelles of a tall plant.
November 27, 2012

Physics
A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.
November 20, 2012

math
f(24)=1/2(24)+5
October 29, 2012

ap chemistry :(
consider the reaction C6H14 + 9.5O2 yields 6CO2 + &H2) at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no work is done as the ...
October 18, 2012

College Physics
Assuming that accelerations is constant, Given: a=15 ms^-2, s=14.1 m Applying kinematics equation, v^2 = u^2 + 2as Find for u since v is 0, u= sqrt(2 x -15 x -14.1) = 20.78 Solve for t, s= ut + 0.5at^2 14.1= 20.78t + 0.5(15)t^2 //Solve quadratic eqn for t t= 0.564(Ans), -3.33(...
October 8, 2012

Math
how did you get 4/5 lan?
October 4, 2012

Math
Use a ratio to compare the values. Simplify the ratio. 5 m to 100 cm the ansere is 5:1 those questions are from k12
October 4, 2012

math
what is 3/4 of paper in inches when 100 sheet of paper equal 3/10 inches
September 17, 2012

Precalculus
Assume the two planes are heading 'towards P'. For now, let's not get too wound up about the x and y aspects. We'll always 'know' the two places are at right angles to each other. First let's create two equations that represent the 'location'...
September 9, 2012

American Government
Voice. It was a public process but was done by voice.
July 24, 2012

math
a wheel is making 300rev/min about its center, calculate the angular velocity of any point on the wheel about the center. also find the speed of a point at a distance of 2cm from the center.
June 24, 2012

maths
at a given instant two cars are at distances 300 and 400m from the point of intersection O oftwo straight roads crossing at a right angle and are approaching O at uniform speeds of 20 and 40m/s respectively. find the shortest distance between the cars and the time taken to ...
June 24, 2012

maths
two ships are steaming in opposite directions at 30 and 40km/h respectively, and when they are directly abeam a shot is fired from one. if the gun at rest gives a muzzle velocity of 800m/s. find the direction in which it must be fired to hit the other ship. gravity being ...
June 24, 2012

math
what rate of annual simple interest is equivalent to 9% per annum compounded semi-annually for 3 years
June 24, 2012

Geometry
If measures of two complementary angles are in the ratio 1 : 5. What are the degree measures of the two angles? Thanks :)
May 14, 2012

How do you
Thankyou very much :)
May 3, 2012

How do you
Write the standard equation for the circle center (–6, –8), that passes through (0, 0). How would someone do this? I have been looking through all my notes from class and I dont understand how to do it.
May 3, 2012

math
72/8=9 He has spent 1 out of 9 so he has 8/9ths of his money left.
May 3, 2012

geometry
A park maintenance person stands 16 m from a circular monument. Assume that her lines of sight form tangents to the monument and make an angle of 47°. What is the measure of the arc of the monument that her lines of sight intersect? Please don't just answer it tel me ...
May 3, 2012

Geometry
100*3= 300 Senior tickets 150*2=300 Junior Tickets 300*1=200 Sophomore Tickets 800 Total 300/800 chance 3 out of 8.
May 3, 2012

Math
yo wazzup so can you guys help me with this one problem? Thanks a bunch! Problem: Draw a circle whose center is at (1,2) so that the point (1,5) is a point on the circle. What is the circumference of the circle. I don't get those problems!
April 25, 2012

Geometry
Thankyou so much, and thanks for telling me how to do it. :)
April 2, 2012

Geometry
The area of a regular octagon is 35 cm². What is the area of a regular octagon with sides three times as long?
April 2, 2012

Math
Which angle is complementary to(CBS?
March 13, 2012

math
if z(t) = 60 * 1.03^t, find t when z(t) =144
February 19, 2012

geometry
An animal shelter has 22 cats and 16 dogs. Write the ration of dogs to cats as a fraction in lowest terms.
February 3, 2012

Chemistry
If 35cm cube of gas is heated from 14 degree celsius to 55 degree celsius.what is the new volume?
January 29, 2012

math
Find the Range of the following relation y=a^2x-ax^2, x≥1/2a, a<0
January 27, 2012

math
hi I THINK THE ANSWER IS 569
January 4, 2012

Economic
templeeeeeeeeeeeeeeeeeeeeee
November 17, 2011

chemistry
A 130.0 mL buffer solution is 0.100 M in NH3 amd 0.135 M in NH3 and 0.135 M in NH4Br. What mass of HCI could this buffer neutralize before the pH fell below 9.00?
November 6, 2011

algebra
A rectangular piece of cardboard measures 17cm by 14cm. Strips of equal width are cut off one side and one end. The area of the remaining piece is 108cm^2. Find the width of the strips removed.
October 28, 2011

science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
October 23, 2011

english
what is the plural from of "child"
October 12, 2011

free will baptiste
i am trying to help my daughter with home work but dont understand question. Show 30, Broken Key is 3. Show several ways. if am able to solve one i can help her to the rest.
September 28, 2011

history
Was the Declaration of Independence a conservative or liberal document? According to the 18 century definition of conservative and liberal.
September 27, 2011

math
If 12a=6 tens. Find a
September 24, 2011

chemistry
a) How many micrometers make 0.4 m? b)How many µg in 4.732 mg?
September 13, 2011

physics
May 24, 2011

math
-216
May 20, 2011

physics
Light falls on a photoelectric surface that has a work function of 2.90 eV. If the voltage required to stop the ejected electrons is 0.210 V, what is the wavelength of the incident radiation?
May 10, 2011

geometry
Two sides of a triangle measure 8 and 15. How many integer values can be assigned to the third side so that all the angles in the triangle are acute?
April 18, 2011

economics
some study guide questions i am stumped on 1 uncertainty about the future is likely to a increase current spending b either increase or decrease c decrease current spending d no impact on current spending think it's d 2 as the general price level increases the amount of ...
April 15, 2011

chemistry
a) Aluminum Chloride has a universal indicator color of red and the Ph of 4.0 b) Sodium Carbonate has a universal indicator color of violet and the Ph of 9.5. c) Ammonium Acetate has a universal indicator color of green and the Ph of 7.5 For the following salts give an ...
March 15, 2011

social studies
what did the dutch call their colony in north america
March 9, 2011

math
16-8=8=4x4=16
March 8, 2011

Chemistry
If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
February 26, 2011

Chemistry
If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
February 26, 2011

Chemistry
If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
February 26, 2011

What angle would a projectile have to be shot at so that it will go twice as high as it will far
February 24, 2011

What angle would a projectile have to be shot at so that it will go twice as high as it will far
February 24, 2011

What angle would a projectile have to be shot at so that it will go twice as high as it will far
February 24, 2011

physics
Uniform rod of weight 10N and length 5m is supported by ropes from points P and Q. The rope at P is attached 1.0m from end M and the rope at Q is attached 0.25m from end O. find the tensions Tp and Tq
February 24, 2011

Physics
you will first of all conevert km/h to m/s which is 105 multiply 1000 then divide by 3600= 29.7. use the formula f= ma. 1250 multiply by 9.8=12250 then use formula for work w=f multiply by distance w=12250 multiply by 29.7=363825J.
February 23, 2011

Math (Help This Will Be on My Test Tomorrow!)
What is 2x times 200-4x/3? {2x(-4x+200/3)
February 23, 2011

Functions
What is 2x times 200-4x/3? {2x(-4x+200/3)
February 23, 2011

mth
(8*)/(*-3)+7/(*-3)=8*(*-3)+7(*-3)/(*-3)+(*-3) find d l.c.m. ans=1-5*/3
February 22, 2011

Science
Diagram examples of a player dat drop a ball on d ground and bounce back to his hand
February 22, 2011

College algebra
y-y1/x-x1=m, (6,4) m=9/8. y-4/x-6=9/8, 8(y-4)=9(x-6), 8y-32=9x-54, 8y=9x-54+32 divide both by 8, 8y/8y=9x/8-22/8, Ans=y=9x/8-22/8
February 14, 2011

Physics
A car travels 2.06 km in the x-direction, then turns left 70.3 degrees to the original direction and travels an additional distance of 4.23 km. Calculate the x component of the car’s net displacement. Let : d1 = 2.06 km, theta = 70.3 degrees , and d2 = 4.23 km.
February 1, 2011

algebra
1<3x+5<12
January 16, 2011

college
A 5.1 kg object initially at rest at the origin is subjected to the time-varying force shown in Figure P5.25, with the vertical axis in 4 N increments. What is the object's velocity at t = 6 s?
December 6, 2010

Probability and Statistics
Can someone tell me what formula I should use? The number of milligrams of tar in filtered and unfiltered cigarettes is being compared. The following cigarettes are pulled to be part of the samples: Filtered: bunch of data Unfiltered: bunch of data The first question is create...
November 30, 2010

Statistics
A popular casino in Windsor estimates that the chance that someone sitting at one of their Black Jack tables has a 0.35 probability of winning a given hand. Assume that all games played are independent. a. Isaac decides to play until his first win, and bets \$50 per game. When ...
November 24, 2010

Literature
Can anyone point me in the right direction? I need to know which play made the line Drama Kings and Queens unite!. I have tried using several search engines with no avail. Just a hint at the author would be good.
November 9, 2010

English Literature
Can anyone tell me which Play the Phrase, "Drama Kings and Queens, Unite!" came from ar at least point me in the right direction?
November 9, 2010

math
Aspider travels at a speed of 1.17 miles per hour. At this rate, about how far can a spider travel in 3 hours?
November 4, 2010

Chemistry Help
using your method i got 0.45moles,is that correct?
October 15, 2010

Chemistry Help
If it takes three "breaths" to blow up a balloon to 1.2 L, and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 L balloon? i am trying to use v1/n1=v2/n2 but i am stuck, can u help? thank you
October 15, 2010

spanish 1
durante el dia (pasar) tiempo con mis amigos, what would be the form for the subject
October 11, 2010

Chemistry
1. You have gone back in time and are working with Dalton on a table of relative masses. Following are his data: 0.602g gas A reacts with 0.295g gas B 0.172g gas B reacts with 0.401g gas C 0.320g gas A reacts with 0.374g gas C a) Assuming simplest formulas (AB,BC,AC) construct...
September 6, 2010

Chem 101 science
Rank the following samples in number of atoms from least to greatest. a) 2 mol of K atoms b) 48 g of S c) 27 g of Be d) 50 g of Na
August 26, 2010

Chem 101. Science
Rank the following samples in mass from least to greatest. a) 2 x 1023 S atoms b) 0.25 mol of Cu atoms c) 2 mol of N atoms d) 6 x 1023 Na atoms
August 26, 2010

Chem 101
Consider the reaction of 82.0 g of oxygen as follows: 4Fe + 3O2 2Fe2O3 How many moles of oxygen react? How many moles of iron must react? How many moles of product form? What mass of product forms?
August 26, 2010

arithmetic
An auditorium has 20 rows of seats.These are 20 seats in the first row,21 in the second row and 22 in the third row and so on.how many seats are there in all rows?
August 25, 2010

MATH
ADDING LITERS 1/2 , 3/4 AND 7/8 SOLUTION; 1/2=4/8, 3/4=6/8 AND 7/8 ANSWER? 14/8 PUZZLE!
July 20, 2010

Grammar and Composition
The poor children of the village were left destitute. look up the definition and you will see by the examples that this is the correct usage.
April 23, 2010

Biology
How does temperature affect the solubility of oxygen in water?
April 23, 2010

physics
find the resultant of vectors A of magnitude 10units in the direction N40E and B of magnitude 8units in the direction S30E
April 16, 2010

economics
Given that the monopolist demand curve is Qd=200-2P, TC=#900 and P= #55. What is the total profit?
April 9, 2010

AP BIO
If a particular experiment were known to have a transformation efficiency of 3 x 103 bacteria/ìg of DNA, how many transformant colonies would be expected to grow on the LB/amp/ara plate?
April 7, 2010

Which financial ratios would you consider most useful? Would these ratios be different than the ones you would consider useful as an investor? Why or why not?
April 1, 2010

Science
Why are spurgeons important to theie ecosystem?
March 15, 2010

Financial Engineering
Describe a potential arbitrage strategy if a put price is the same as the negative of a forward if the strike are the same. You need to specify the number of units you would long/short for each instrument, initial cash flow, and final cash flow. An arbitrage oppotunity arises ...
March 12, 2010

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