Thursday

September 3, 2015
Total # Posts: 104

**science**

A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.
*August 26, 2015*

**better days**

a ball thrown vertically from the ground level hits the ground after 4secs.calculatethe maximumheight it reachedduringit's journey.(g=10m/s2)
*August 9, 2015*

**physics**

a stone projected horizontally from the top of a tower with a speed of 4m/s lands on the level ground at a horizontal distance 25m from the foot of the tower. calculate the height[g=10m/s2]. is it u squared divided by 2g
*August 3, 2015*

**Science**

9. The Pleistocene Epoch, from 1.7 million years ago to 10 000 years ago, was marked by A. a lack of oxygen B. the presence of warm, tropical seas C. the southern movement of the North American continent D. the formation of glaciers that covered parts of the Northern ...
*July 9, 2015*

**Science**

A skydiver steps out of a helicopter hovering thousands of metres above ground. After 3.5 s of free fall the skydiver pulls the rip cord. What is the skydiver’s displacement during the 3.5 s of free fall?
*July 4, 2015*

**Science**

A baseball flew 19.6 m straight up into the air after being hit by a bat. How long should it take for the ball to return from its maximum height? A. 1.02 s B. 1.91 s C. 2.00 s D. 3.99 s
*July 4, 2015*

**Science Help Not sure**

A traffic-safety engineer is designing a deceleration lane. She is basing the length of this lane on the distance needed to slow down from 126 km/h to 65 km/h in 8.0 s. How long will the deceleration lane be? A. 2.1 x 10^2 m B. 3.8 x 10^2 m C. 4.2 x 10^2 m D. 7.6 x 10^2 m
*July 4, 2015*

**Science**

Starting from rest, an object rolls down a long ramp with a constant acceleration of 1.72 m/s2. After rolling for 4.75 s, what is the magnitude of the ball’s final velocity? A. 9.81 m/s B. 8.17 m/s C. 6.30 m/s D. 4.09 m/s
*July 4, 2015*

**Science Help Not sure**

Within the Gaetz Lake Sanctuary in Red Deer, Alberta, is a looped trail that is 4 km long. Suppose a person walked all the way around the looped trail in 1 h, ending where he or she started. Which statement best describes this person’s motion over this time interval? A....
*July 4, 2015*

**science**

A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second? 28m/s 27.8m/s 3.6x10^2m/s 1.0x10^4m/s
*July 4, 2015*

**Science**

whats the difference between average speed and instantaneous speed?
*July 4, 2015*

**Science**

1.The sound from a bolt of lighting travelled 4.08km in 12.0s. whats was the spped of the sound in metres per second? 0.340m/s 49.0m/s 340m/s 343m/s 2.A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second? 28m/s 27.8m/s 3.6x10^2m/s 1.0x10...
*July 4, 2015*

**Science**

which of the following is not scalar quantity. 0.20m 5.0m/s 10.0m/s[E] 110km/h
*July 3, 2015*

**physics**

a car travels at uniform velocity of 20m/s for 5 seconds, the breaks are then applied and the car comes to rest with uniform retardation in further 8 seconds. draw a graph of velocity against time.How far does the car travel after the breaks are applied.?
*June 9, 2015*

**Economic**

Using Simpson role to find the denvatives of x=(y²+3x+7) (x²-4)
*May 29, 2015*

**math**

ref to the question above to rewrite 2/5, 1/6 and 1/3 in ascending order : I think we first find the common denominator which is 30 then 2/5 is the simplified fraction of 12/30, 1/6 is also the simplified fraction of 5/30 and lastly10/30 has been simplified to get 1/3. from ...
*April 4, 2015*

**Math**

Show three ways to make 0.60 without using pennies
*March 9, 2015*

**english**

define literature
*February 23, 2015*

**Statistics**

For $5 you can buy a ticket for a drawing for a prize of $2,000. The probability of winning the prize is 0.001. How much money to you expect to win
*February 20, 2015*

**Physics**

The position of a point A is specified as A (5.7).the y-coordinate is ?
*January 20, 2015*

**physics**

The standard piece of apparatus used to measure distance in the laboratory is what?
*January 20, 2015*

**physics**

The S.I. Unit of displacement is what?
*January 20, 2015*

**maths lit,geography,tourism,business studies,l.o**

yes i passed them with good grades
*January 4, 2015*

**Math Plz dont ignore Plz**

what do you mean show my work. do you mean show what i have done, if i dont know the question how can i show my work? i just need to know how to do it. so i can practice on it.
*December 15, 2014*

**Math Plz dont ignore Plz**

The Eskimos are trying to generate more money because player wages are increasing. they have came up with a couple of plans: Plan 1 : they are going to open up 1850 new seats in the endzone that will be reserved for family seating. they project that they will, on average, get ...
*December 15, 2014*

**math**

The Eskimos are trying to generate more money because player wages are increasing. they have came up with a couple of plans: Plan 1 : they are going to open up 1850 new seats in the endzone that will be reserved for family seating. they project that they will, on average, get ...
*December 15, 2014*

**astronomy**

it will be less than 365 days for sure, because without the sun earth will be spinning fast
*December 15, 2014*

**Any math tutor online? Help**

ik you cant graph here, but plz can you tell me the x and y intercept so i can do the grpgh
*December 15, 2014*

**Any math tutor online? Help**

Two companies charge these rates for printing a brochure : Company A charges $175 for set up and 0.10 pet brochure Company B charges $250 for set up and 0.07 pee brochure A linear system that model this situation is C=175 + 0.10n C =250+ 0.07 Where c is the total A) graph the ...
*December 15, 2014*

**Any Math Tutor Online? Help**

thx but do you think c) is right? what about the 6
*December 14, 2014*

**Any Math Tutor Online? Help**

man on 12m tower, he observed two houses. the angle of depression to one of them was 6' and the other is 3'. how far apart the houses are. Calculate the distance between the house if: a)the houses are on the same side of the tower b)the houses are on opposite sides of ...
*December 14, 2014*

**algebra**

t=10/3+c/3
*September 16, 2014*

**math**

Add the odd numbers divisible by 3 lying between 200 and 400.is arithmetic or geometric progression.
*August 26, 2014*

**MATH**

IF 810 BOYS WEED A PLOT OF LAND IN 4 YEARS, HOW MANY YEARS WOULD IT TAKE 1080 BOYS TO WEED THAT SAME PLOT OF LAND?
*April 4, 2014*

**math**

Bladder infections are often caused when the bacteria E. coli reach the human bladder. Suppose that 3000 of the bacteria are present at time t = 0. Then t minutes later, the number of bacteria present will be a) How many bacteria will be present after 10 minutes? 30 minutes? ...
*March 24, 2014*

**math**

The position of an object moving in a straight line is given by the function , where s(t) represents distance traveled and t represents the time the object has been in motion. How long (to the nearest tenth) will it take the object to move 17 meters?
*March 24, 2014*

**Albegra**

step by step on how to solve this problem 2420/(570+r) = 2140/(570-r)
*March 8, 2014*

**MATH**

HOW DO YOU SIMPLIFY SURDS WITH CUBED 98 ROOT?
*February 14, 2014*

**English**

The answer is Chicago. You basically pick the number of letters stated in the fraction. For example, 3/7 of a chicken. The word 'chicken' has 7 letters. So, you pick the first 3 as stated in the fraction. Then, you do the same for other given words too and you end up ...
*January 25, 2014*

**Statistics**

It is computed by the average distance from the average or average of all the averages for multiple sets of data. It is important because it measures the variability in the set of data. It helps in finding how close the values of data set are to the mean. We compute the z-...
*January 23, 2014*

**math**

Chad buys peanuts in 2-pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2-pound bags of peanuts should Chad buy so that he can fill the 5/6-pound bags without having any peanuts left over?
*January 15, 2014*

**physics**

A spiral spring of natural length of 30.0cm and a constant force of 20N/m is compressed to 20cm. Calculate the energy stored in the spring.
*January 7, 2014*

**physics**

A spiral spring of natural length of 30.0cm and a constant force of 20N/m is compressed to 20cm. Calculate the energy stored in the spring.
*January 7, 2014*

**physics**

a body of mass 25kg moving at 3m/s on a rough horizontal floor is brought to rest after sliding through a distance of 2.5m on the floor. calculate the coefficient of sliding friction.
*January 7, 2014*

**Introduction to criminal Justice.**

Topic:4th Amendment exception to searches and seizures (Terry v. Ohio) what impact did Terry v. Ohio have on law enforcement officers? Hint: what have been the benefits or hindrance of Terry as it relates to officer safety?
*December 17, 2013*

**history,geography, agricultural science andmaths lit**

which job releted with this subject
*December 5, 2013*

**Math**

Solve for x -2 + 2x = -x + 2 + x
*November 5, 2013*

** Math**

For y=2x +3 whenx=4, what does y equal?
*September 11, 2013*

**Math**

Why did Airhead eat the dollar he brought to school
*May 13, 2013*

**Math**

Jada, Nicholas, Nita, and Calvin shared $60. Jada received 1/2 of the total amount of money Nicholas, Nita, and Calvin received. Nicholas received 2/3 of the total amount of money Nita and Calvin received. Nita received 3 times as much as calvin. (a) how much money did jada ...
*May 9, 2013*

**Chemistry: Please check answers**

Name the 4 isomers of the compound with molecular formular c4h10o
*April 11, 2013*

**Life orientation**

what is meant by discrimination
*March 5, 2013*

**chemistry**

Pt, (H2) 1atm | CH3COOH 0.1 M, CH3COONa 0.15M || NaBr 0.1M, AgBr(S) | Ag write the cathodic, anodic and final reactions.
*February 17, 2013*

**Physics**

n1sinQ1 = n2sinQ2 for air/glass interface Angle = 27degrees which is sinQ2 n2sinQ2 = n3sinQ3 for glass/water interface
*February 8, 2013*

**Math**

Math Question: winning time of a marathon is 1 hour, 24 minutes and 11 seconds... How do I find the average speed?
*February 5, 2013*

**Social Studies**

Argument that Roger Sherman uses to convince people to ratify the constitution?
*January 29, 2013*

**chemistry**

Calculate the molarity of a solution containing 58.5mg of NaCl in 2.50mL of solution.
*November 30, 2012*

**History**

The Iroquois form of government was a democracy. They had councilmen for each tribe just like how the US have councilmen for each sate. They also had women rights.
*October 17, 2012*

**math**

math
*August 2, 2012*

**Mathsw**

A man 6 feet tall is standing 9 feet from a 18 feet tall light pole. His shadow cast 15 degree. What is the angle formed from this equation?
*July 27, 2012*

**Math**

I have trouble with math, I'm very good at science and when I grow up I want to be a zoologist, the problem is that. MATH I try to pay attention at school but the teacher is very boring and I'm one of those people that can't pay attention when bored. Any tips?
*April 23, 2012*

**math**

A warehouse having a volume of 10,000 ft3 and a floor area of 1000 ft2 is to be built. The cost of constructing the floor is $6.00/ft2, the cost of the roof is $10.00/ft2, and the cost of the walls is $20.00/ft2. If W is the width, L the length, and H the height of the ...
*April 23, 2012*

**Embedde System and IC Design.**

Write a program that will count down from the last (4) digits of the student ID 1119939 until zero. Once completed, the function will reset and count down again. Assume the last two (2) digits of the student ID is a decimal number, and crystal oscillator is 11.0592MHz.
*March 22, 2012*

**Embedded System and IC Design.**

Write a program, which writes the last two (2) digits of the student ID 1119939 into the 8051 microcontroller’s internal RAM addresses from 40h to 6Fh with the same data. Assume the last two (2) digits of the Stamford student ID(1119939) is a decimal number, and crystal ...
*March 22, 2012*

**math**

How to solve a three set problem
*March 8, 2012*

**math**

7 five-pack stickers and 3 eight-pack stickers 5x+8y=59 5(7)+8(3)=59 35+24=59 59=59
*March 7, 2012*

**Math**

7 five-pack stickers and 3 eight-pack stickers
*March 7, 2012*

**Physics**

How do i determine the mass of ice initially in the calorimeter when dry saturated steam is passed into 250g of a mixture of ice and water in a calorimeter of thermal capacity 45J/K when all the ice has just melted,and the mass of the content in the calorimeter has increased ...
*March 4, 2012*

**algebra**

a box of animal crackers measures 12 inches by 8 inches by 2 inches. what is the volume of the box?
*February 7, 2012*

**math**

ratio 1,5 hours 50 min
*January 28, 2012*

**maths**

factorise fully: 5x^2+11x+2
*January 27, 2012*

**industrial electronics N2**

Hi, i'm seriously need your help on this subject just to explain the basics, chapter by chapter. i registered a part-time Electrical Engineering and placed me in N2.
*January 19, 2012*

**physics**

A uniform rod (AB) of mass 80kg and 1.0m lenght is supported on the 2 knife edges placed 15.0cm from its ends. what will be the reactions at these support when a 20kg mass is suspend 10cm from the mid-point of the rod.(workings and diagram).
*November 16, 2011*

**MATH**

Answer
*October 31, 2011*

**AP Physics**

M1v1 +M1v1=(m1+m2)v (3*10) + (0.5*0)=(3+0.5)v 30 + 0 = 3.5v 30 =3.5v v =8.57m/s.
*October 18, 2011*

**chemistry**

B. Everyone knows that water is supposed to boil at 100° C. Why did your water sample boil at a different temperature? C. While heating two different samples of water at sealevel, one boils at 102o C and one boils at 99.2o C. Calculate the percent error for each from the ...
*September 16, 2011*

**world issuse**

The answer should be 'message'. We read it everyday, d 3rd and 4th letters are the same and d 5th 6th and 7th letter increases everyday which is 'age'
*May 24, 2011*

**chemistry**

what is the ph of a 2.0M solution of a strong acid?
*April 3, 2011*

**Mathematics**

4 and 5
*February 20, 2011*

**Chemistry**

Ground water intially contains 1.800mg/L of iron as Fe3+. What must the pH be raised to in order to precipitat all but 0.30mg/L of iron. The tempertaure is 25 degrees celcius
*January 18, 2011*

**Math**

Suppose you plan to save $12 per week.You have already saved $7.50.In how many weeks will you have saved at least $100?
*January 16, 2011*

**Physics**

A battery of three cells in series each of emf 2v and internal 0.5 ohms is connected to 2ohms resistor in series with a parallel combination of two 3ohms resistors (a)draw the circult diagram (b)the effective of external resistance (c)the current in the circult (d)the lost ...
*November 23, 2010*

**Physics**

A battery of three cells in series each of emf 2v and internal 0.5 ohms is connected to two ohms resistors in series with a parallel combination of two 3ohms resistors? (a) draw the circult diagram (b)the effecive of ex ternal resistance (c)the current in the circult (d)the ...
*November 23, 2010*

**11th grade**

X equals minus seven over 3 or seven over three. We've been dealing with this in my school so I'm certain as death about it.
*November 16, 2010*

**statistics**

a study of 40 professors showed they spent on average 13.6 minutes correcting a student papers. Given a standard deviation of 17, the 90% confidence interval of the mean time for all the test papers is what?
*November 15, 2010*

**home economics**

what are the choices of career in home economics influence of orientation in home economics
*May 27, 2010*

**Chemistry**

162.
*May 5, 2010*

**chemistry**

Three gases (8.00 of methane, , 18.0 of ethane, , and an unknown amount of propane, ) were added to the same 10.0- container. At 23.0 , the total pressure in the container is 3.50 . Calculate the partial pressure of each gas in the container.
*May 5, 2010*

**instrument**

Learn to whistle
*January 31, 2010*

**psychology**

How research methods are used to determine causes and solutions to psychological or work problems
*September 6, 2009*

**Math 156**

The answer isn't even in your options; the correct answer is 119.9mm Hg, 160.1mm Hg.
*August 7, 2009*

**Chemistry**

1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a constant pressure of 6.5 ...
*March 29, 2009*

**Physics**

7.2x10^6?2.88x10^4 =594.2
*January 27, 2009*

**math-3rd grade**

explain how 3 group partial sums work
*October 15, 2008*

**Business Communication**

Your boss wants to send a brief email message welcoming employees recently transferred to your department from your Hong Kong branch. They all speak English, but your boss asks you to review his message for clarity. What would you suggest your boss change in the following ...
*October 11, 2008*

**health**

the three things that describe and difine what enviorment is ?
*October 5, 2008*

**Mathimatics**

If 2 box are in a bag one is taken out what is the probability that a box is taken from the bag
*September 23, 2008*

**biology: the study of life**

AN INDIVIDUAL LIVING THINS IS A(N)
*January 27, 2008*

**math**

if you have to build a pool of 72 yards in your yard,and the construction company wants you to choose the dimentions (lenth and width) of the pool.how do you choose the dimentions that will give you the greatest area possible?
*January 2, 2008*