Saturday

February 28, 2015

February 28, 2015

Total # Posts: 37

**physivs**

a body of mass o.1 kg is attached to a spring and placed on a horizontal frictionless table. the spring is stretched 20cm,when a force of 5N is applied .what will be the period of oscillation when the mass is set in motion?
*December 31, 2014*

**physics**

what will be the centipetal acceleration on a man whose mass is 80 kg,when resting on a ground at the equator if the radius of the earth'R' is 6.4x10 power 6 meter.
*December 31, 2014*

**physics**

the speed of an object at the end of 4 successive seconds is 20,25,30 and 35 meters per second,respectively.the acceleration of this object is?
*December 31, 2014*

**physics**

a ball of weight 200 grams,is tied to the end of a cord and whirled in a horizontal circle of radius 0.6 m.if the ball makes five complete revolutions in 2 seconds,what will be the linear speed of the ball?
*December 31, 2014*

**physics**

a rock is dropped from a high brige.at the end of 3 seconds of free fall the speed of the rock is:[in centimeters per second,g=10 m/second square]
*December 30, 2014*

**math**

express 0.003522....in p/q form
*June 24, 2014*

**Maths**

132cm2
*February 11, 2014*

**math**

what is 24/99 to 8 to the exponets
*November 14, 2013*

**maths**

there is a figur given and the triangleABC,D,E,F are respectively find the perimeter of triangleDEF
*August 26, 2013*

**physics**

an aeroplane takes off at an angle of 30 degree to the horizontal. if the component of its velocity is 250 km/h, what is the actual velocity?
*May 4, 2013*

**stats**

A researcher hypothesizes that a new herbal supplement improves memory. A sample of n = 25 college students is obtained and each student takes the supplement daily for six weeks. At the end of the 6-week period, each student is given a standardized memory test, and the average...
*October 23, 2012*

**stats**

For a normal population with µ = 100 and σ = 20: 1. What is the probability of a particular score being greater than 110? 2. What is the probability of a particular score being less than 50?
*October 23, 2012*

**stats**

Given a normal distribution with µ = 80, σ= 5, and given a sample size of n = 25, describe the following characteristics of the sampling distribution: 1. Central tendency 2. Variability
*October 23, 2012*

**stats**

A normal distribution has a mean of µ = 28 with σ = 5. What is the minimum raw score needed to be in the top 25% of the distribution?
*October 23, 2012*

**CHEM AP**

Complete and balance the following equation. MnO4^‾ (aq) + CH3OH(aq) ¨ Mn^2+(aq) + HCO2H(aq) (acidic solution) I KNOW ITS a redox, so i followed the steps and got: 4MnO4^- (aq) + 5CH3OH (aq) + 11H2O (l) + 12H^+ (aq) ¨ 4Mn^2+ (aq) + 5HCO2H (aq) can ...
*September 27, 2011*

**mechanics**

center og gravity of a circle
*July 17, 2011*

**maths**

We can cut a square diagonally in half to get two triangles. Suppose the perimeter of the square is 3cm longer than the perimeter of a resulting triangle. What is the perimeter of the square?
*April 19, 2011*

**Math**

We can cut a square diagonally in half to get two triangles. Suppose the perimeter of the square is 3cm longer than the perimeter of a resulting triangle. What is the perimeter of the square?
*April 19, 2011*

**Chemistry**

Iron metal is formed during the reduction of iron(III) oxide: Fe2O3 + 3CO 2Fe + 3CO2 When 24.3 kg of Fe2O3 react with 14.6 kg of CO and 7.8 kg of Fe are recovered, what is the percent yield for the reaction? Pls.. help I am having a hard time finding the answer. The wordings ...
*April 13, 2011*

**english**

i've to write paragraph on birthdays.main idea is birthdays are fun.
*January 14, 2011*

**Math7**

thank you very much! :)
*January 10, 2011*

**Math7**

A small tectangular box has a width of 18cm and a volume of 720cm. a.)determine the height and the length of the box. b.) is there more than 1 answer? Explain.
*January 10, 2011*

**Math7**

thanks
*January 10, 2011*

**Math7**

poul has 124.8m of encing to build a rectangular pen. He wants the pen to have the largest possible area. Calculate the length and width of the pen to one decimal place. I don't get it at all
*January 10, 2011*

**english**

you just discovered that your new hat is magical.write about your new special abilities
*December 22, 2010*

**english**

december is the month for gift giving.write about a gift that you would like to give to a special person?
*December 22, 2010*

**PHYSICS **

MOMENT OF INIRTIA OF HOLLOW CONE .Q2 MOMENT OF INIRTIA OF SOLID CONE WHOSE DENSITY IS VERING WITH RADIUS .
*November 3, 2010*

**PHYSICS **

MAXIMUM ELLONGATION IN SPRING WHEN THE MASS WITH SPRING IS THROWN WITH VELOCITY 4M FROM EQUILIBRIUM GIVEN THAT K=50 MASS OF BODY IS 5KG
*November 3, 2010*

**Account**

The capital structure of Bombay Refrigeration Company Ltd. Consists of an equity share capital of Rs. 3, 00,000 (share of Rs. 10 par value) and Rs. 3,00,000 10% debentures. Sales increased by 20% from 30,000 to 36,000 units, the selling price is Rs. 10 per unit. Variable cost ...
*October 1, 2010*

**science**

what is a dormancy? i have to write one paragraph.
*May 23, 2010*

**psychology**

What is the name of the type of thinking that humans do naturally? What is the weakness of this type of thinking?
*April 8, 2010*

**chemistry**

GUYS I HAVE A PROJECT DUEE.. AND I HAVE NO IDEAA WHAT TO DOO.. PLEASE HELP MEEE. THIS CHAPTER IS ABOUT ELECTROCHEMISTRY! QUESTION--> I HAVE BEEN LUCKY ENOUGH TO OBTAIN A SHRINKY DINK 2000(FOR THOSE OF YOU IN THE KNOW, OR THOSE OF YOU WHO ARE AROUND ELEMENTARY AGE BOYS, YOU ...
*November 22, 2008*

**chemistry**

Laws passed in some states define a drunk driver as one who drives with a blood alcohol level of 0.08% by mass or higher. the level of alocohol can be determinded byt titrating blood plasma with pottasium dichromate according to the unbalanced redox reaction. igot the balanced...
*November 6, 2008*

**11th grade ..CHEMISTRY**

This is a Quantitative Redox titration. (KMnO4) = 1.8 G.. 500 ML after the experiment we had to record the data of the 3 trials. 1. Trial - VolUme FeSO4 = 10.00 Ml - VOlume KMnO4 11.00 Ml 2. Trial - VolUme FeSO4 = 10.00 ML - VOlume KMnO4 11.15 Ml and we ran outa the solution...
*November 5, 2008*

**CHemistry**

a capsule of vitamin C.. a weak acid, is analyzed by titrating it with 0.425 M sodium hydroxide. it is found that 6.20 Ml of base is required to react with capsule weighing 0.628 g. what is the percentage of vitamin C (C6H8O6) in the capsule?( one mole of vitamin C reacts with...
*October 22, 2008*

**Chemistry**

ASpirin, c9h8o4, is prepared by reating salicylic acid, c7h6o3, with acetic anhydride, c4h6o3, in the reaction. c7h6o3 + c4h6o3---> c9h8o4 + c2h4o2 A student is told to prepare 45.0 g of aspirin. she is also told to use a 55.0 % excess of acetic anhydride and to expect to ...
*September 22, 2008*

**physics**

what is physics?i know that its subject but what is defination of physics? The study of matter, energy, space, and time, and the interactions thereof.
*July 7, 2007*

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