Tuesday

December 6, 2016
Total # Posts: 49

**Chemistry**

Which one of the following is NOT a physical process? A. Dry ice subliming B. Steam condensing C. Alcohol evaporating D. Melting ice E. Gold plating jewelry

*October 30, 2016*

**chemistry**

when 2g of a gas A is introduced into an evacuated flask kept at 25 centigrade, the pressure is found to be 1 atmosphere.if 3g of another gas is then added to the same flask, the total pressure becomes 1.5atm. assuming ideal behaviour, the ratio of their molecular weights is

*October 9, 2016*

**finance math**

Bnak offers a loan of 10% per annum compounded semi annually and the effective annual rate is 10.25% Example: Customer A Customer A negotiated a $10,000 loan to be repaid monthly over 5 years. How much is the monthly installment (payment)?

*August 1, 2016*

**maths**

the sumof three positive numbers is 26.the second number is 3times as large as the first.if te sum of the squares of these numbers is least find the numbers

*June 12, 2016*

**physics **

A car is travelling along the road at 8m/s.IT accelerates at 1m/s for a distance of 18m.how fast is it then travelling?

*May 24, 2016*

**science**

A ladder 5 m long is leaning against a wall. The bottom of the ladder is pulled along the ground at rate 2 cm/s . How fast is its height on wall decreasing when foot of ladder I'd 4 m

*May 17, 2016*

**science**

What is density of acetone at 23°C

*March 14, 2016*

**Math**

length of floor of dining space=400cm breadth=300cm area=400Ã—300 =120000cm^2 length of tile=8cm breadth=5cm area of one tile =8Ã—5 =40cm^2 tiles required =120000/40 =3000 tiles

*January 17, 2016*

**physics**

Can water be boiled without heating?

*January 17, 2016*

**math**

probability for one dice=4 which are (2,4,5,6) for a pair of dice=16 which are (2,2) (4,2) (5,2) (6,2) (2,4) (4,4) (5,4) (6,4) (2,5) (4,5) (5,5) (6,5) (2,6) (4,6) (5,6) (6,6)

*January 17, 2016*

**math**

probability of coming an even number or a number greater than 3 in a dice=4 which are (2,4,5,6) for a pair of dice=16 which are (2,2) (4,2) (5,2) (6,2) (2,4) (4,4) (5,4) (6,4) (2,5) (4,5) (5,5) (6,5) (2,6) (4,6) (5,6) (6,6)

*January 17, 2016*

**Physics**

Calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one where s=0.072N/m.

*January 17, 2016*

**science**

A gas at atmospheric pressure is compressed isothermally to one third of its volume. What is final pressure?

*January 17, 2016*

**physics**

a rain drop of radius 0.3mm has a terminal velocity in air 1m/s. the viscosity of air is 18×10^-5 dyne cm^-2 s. find the viscous force on the rain drops in newton.

*January 17, 2016*

**physics**

calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one. where S=0.072N/m

*January 17, 2016*

**Maths**

total marbles=64 ratio of red and blue marbles=3:5 let the red marbles=3a then,the blue marbles=5a so, 3a+5a=64 8a=64 a=64/8 a=8 then the blue marbles=5×8 =40

*January 17, 2016*

**physics**

calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one. where s=0.072N/m.

*January 17, 2016*

**Math**

let, p^2-8p+k =0 then,we have to find two numbers whose sum is -8 and product is k and then by solving the equation, we will get 0. so,such numbers are -4 and-4 by expanding the equation, we have p^2 (-4-4)p +(-4×-4)=0 p^2 -4p -4p +16=0 p(p-4) -4(p-4)=0 (p-4) (p-4)=0 p-4...

*January 17, 2016*

**maths**

let base of parallelogram =a then altitude will be=3a area of parallelogram=base × altitude =a× 3a 192=3a^2 192/3=a^2 64=a^2 8=a so,base=8cm altitude=8×3 =24cm

*January 17, 2016*

**chemistry**

Battery acid is 4.27MH2SO4(AQ.) And density of 1.25g/ml . What is the molality of H2SO4 in the solution

*May 3, 2015*

**pcshysi**

a man weighing 80 kg is standing on a trolly weighing320 kg the trolly is resting on a horizontal rails if the man start walking on the trolly along the rails at the speed 1 m/s then after 4s his displacement relative to ground will be

*October 18, 2014*

**physics**

a person of mass 80 kg standing on a boat of mass 320 kg which at rest in still water the person is initially 12m from the shore the person walk on boat for 6 sec with a constant speed 1 m/s toward the shore and then stop distance of the person from the shore finally

*October 18, 2014*

**Science**

A constrained string with a length of 8.5 meters is vibrating at its fundamental frequency of 113.1 Hz. What is the frequency of the 7th harmonic on this string?

*May 8, 2013*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...

*April 10, 2013*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...

*April 10, 2013*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...

*April 10, 2013*

**Money and Banking**

I believe the correct answer should be c) Investment banks and the big 5 are just branches of each other, they do the same thing.

*March 31, 2013*

**chemistry**

why NH4+ ion is not strong ligand

*February 1, 2013*

**math**

x^3-4x^2+5x-2

*September 8, 2012*

**Chemistry **

A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. Find the pressure of I2 when the system returns to equilibrium. Find the pressure of I when the system returns to equilibrium.

*February 25, 2012*

**the portuguese man of war**

How long has the potuguese man of war been around? How long does it live? Does it have a ruler or queen like in an ant colony?

*December 4, 2011*

**Physics**

A body of mass 0.1 kg is being rotated in a circular path of diameter 1 m on a frictionless horizontal plane by means of a string. It performs 10 revolutions in 31.4 sec, calculate the centripetal force acting on the body

*August 11, 2011*

**Chemistry 12**

Will a precipitate form if equal volumes of 0.22 M NH4NO3 and 0.22 M KBr are combined? Explain.

*March 10, 2011*

**math**

Mr. Jones grosses $800 per week. He has 6% automatically deposited into his savings account. At the end of the year 3% is added to the account. How much will he have in his savings account at the end of the first year after the interest is added?

*January 8, 2011*

**phyiscs**

1.5*10power13

*October 29, 2010*

**PHYSICS**

A CAR IS BEING DRIVEN BY AFORCE OF 2.5*10POWER10N.TRAVELLING AT ACONSTANT SPEED OF 5m/s,IT TAKES 2 MINUTES TO REACH A CERTAIN PLACE.CALCULATE THE WORK DONE.

*October 29, 2010*

**physics**

A box accidentally falls from the back of a truck and hits the groud with a speed of 15m/s forward. It slides along the groud with uniform acceleration for a distance of 45m before coming to rest. Determine the time it takes to slide the last 10m.

*October 28, 2010*

**Soical Stuides**

Why did the French and Spanish start fighting?

*October 26, 2010*

**statistics**

0.0332

*February 9, 2010*

**maths help!!!!!!!!**

An empty 5-gal water jug weights 0.75lb. with 3 c of water inside, the jug weighs 2.25 lbs. Predict the weight of the jug with 5 c of water inside. Plz explain how to do this.....

*October 7, 2008*

**Does nobody know this problem?**

plz help

*September 23, 2008*

**Grade 11 maths!!!**

The drama club plans to attend a professional production. From 10 to 35 students will go. There is a one-time handling fee of $3. Each ticket costs $25 plus $2 surcharge. Write a linear function that models this situation. Show the work if possible please!!!! Plz...help!!!

*September 23, 2008*

**Grade 11 maths plz help!!!**

i seriously didn't get any equation with 7 for n! plz help

*September 23, 2008*

**Grade 11 maths plz help!!!**

A software company started with 2 employees. In 6 months, the company had 7 employees. The number of employees increased in a steady rate. Which equation models the relationship between the number of employees n and the number of months m since the company started? a.) n = 5/...

*September 23, 2008*

**maths help please!!!!**

thanks so much...its so easy and i've been thinking about it since the afternoon. thanks!!!!!!

*September 21, 2008*

**chemistry**

At what temperature does benzene boil when the external pressure is 480 torr?

*September 7, 2008*

**Physics**

i think its B

*February 5, 2008*

**health**

Adults

*May 28, 2007*

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