A mixture of CO and CO2 having a volume of 20 ml is mixed with x ml of oxygen and electrically sparked. The volume after explosion is (16 + x)ml under the same conditions. What would be the residue volume if 30 ml of the original mixture is treated with aqueous NaOH? (a) 12 ml...
August 21, 2014
tisa recieved $5200 on a deposit she made five years and eight months ago. The interest rate was is 6.7% p.a. compounded quaterly. How much interest was included in amount he received?
June 13, 2014
An investment of $2500 accumulates at 6% p.a compounded semi annually for 3 years. At that time, the interest rate is changed to 5% compounded monthly. How much is the investment worth 2 years after the change in interest rate? What is interest gained at the end of the 5 years.
June 13, 2014
MATHS - HCF
Find the least number when divide by 25, 45, 60 leaves reminder 20. 2) Find the least number which when divided by 18, 12, 24 leaves a reminder of 16, 10, 22 respectively. Can U help me to find the answer.
April 11, 2014
maths - hcf
1) Find the least number when divide by 25, 45, 60 leaves reminder 20. 2) Find the least number which when divided by 18, 12, 24 leaves a reminder of 16, 10, 22 respectively. Can U help me to find the answer.
April 10, 2014
physics to Drwls
a)(a) What is the spring constant of the spring? 51.3 N/m (b) Luke now pulls the brick 5.1 cm from the equilibrium position to watch it oscillate. What is the maximum speed of the brick? .35 m/s So would you subtract 2.55 cm from 5.1 cm? To get how much was stretched?
March 31, 2012
Luke is trying to catch a pesky animal that keeps eating vegetables from his garden. He is building a trap and needs to use a spring to close the door to his trap. He has a spring in his garage and he wants to determine the spring constant of the spring. To do this, he hangs ...
March 31, 2012
The prong of a tuning fork moves back and forth when it is set into vibration. The distance the prong moves between its extreme positions is 2.28 mm. If the frequency of the tuning fork is 440.6 Hz, what are the maximum velocity and the maximum acceleration of the prong? ...
March 30, 2012
A spoked wheel with a radius of 44.0 cm and a mass of 1.90 kg is mounted horizontally on frictionless bearings. JiaJun puts his 0.550-kg guinea pig on the outer edge of the wheel. The guinea pig begins to run along the edge of the wheel with a speed of 18.0 cm/s with respect ...
March 29, 2012
An aluminium can contains ferrous sulphate solution. It is observed that after a few days it develops holes in it. Explain the observation and write the chemical equation for it.
May 31, 2011
TAKE A BOWL OF WATER AND PLACE IT NEAR A SUNLIT WINDOW. PLACE A MIRROR IN WATER AND USE A WHITE CARD AS 0SCREEN POINT.ADJUST THE MIRROR TO AN ANGLE WHERE IT PROJECTS THE COLOURS OF LIGHT ON THE SCREEN. TELL ME YOUR OBSERVATION AND EXPLAIN HOW THIS PHENOMENON OCCURS.
June 10, 2008
pre-calculus-check over work
1). change to exponential form: log2^256=8; 2^8=256 log0.0001=-4; 10^-4=0.0001 2). change to logarithmic form: 5^3=125; log5^125=3 4^-3=1/64; log4^1/64=-3 3). solve the equation: 3^(x-2)=27^(x+1) 3^(x-2)=(3^3)^(x+1) 3^(x-2)=3^(3x+3) x-2=3x+3 -5=2x -5/2=x 2^(x^(2)+1)=4^(x+2) 2...
April 21, 2008