Tuesday

September 27, 2016
Total # Posts: 41

**Chemistry**

You calibrate 25ml pipette at 25degae centigrade using steel weight.the weight of the delivered volume of water is 24.971.what is the volume of pipette at 20 and 25 degree centigrade?

*November 10, 2015*

**Chemistry**

I have to prepare 1ppm of Fe+2 solution in 1litre. How many grams of ferrous ammonium sulphate will be dissolved in 1litre to make above solution.. plzz guide me

*October 31, 2015*

**Physics**

an empty truck weighs 4000N its engine can produce an accelerationof 1m/sif the truck is loaded with 2000N, find the acceleration the engine can prodeuce?

*August 31, 2015*

**Science**

scientist actually have brilliant minds they can predict, they know what should be applied to the experiment so they can become more famous.In real life students mostly like to play scientist like a chemical added into any substance so this substance will be created. ...

*August 31, 2015*

**physics**

simulator they are my best activities to learn on internet i like to play mostly simulation games like surgeon simulator, plane landing and else. Well simulators are the most brilliant creation which looks like real life aircraft.

*August 30, 2015*

**CHILD DEVELOPMENT**

Mr. Brown you should change adult expectations or normally use more related consiquencies students which are learning, reading orpracticng should have separete calsses and the students who are making noise should be separated. I think this will be the best solution if you ...

*August 24, 2015*

**trig**

An airplane is headed northeast, bearing 45◦, with an air speed of 500 miles per hour, with a wind blowing with bearing 315◦, at a speed of 75 miles per hour. Find the ground speed (to nearest tenth of a mph) and the actual course of the plane (to nearest tenth of ...

*April 28, 2015*

**trig**

An airplane is headed northeast, bearing 45◦, with an air speed of 500 miles per hour, with a wind blowing with bearing 315◦, at a speed of 75 miles per hour. Find the ground speed (to nearest tenth of a mph) and the actual course of the plane (to nearest tenth of ...

*April 28, 2015*

**trig**

Ann is trying to find the height of a building. She finds that the angle of elevation from the ground to the top of the building is 38◦. She walks 150 feet straight back and finds the angle of elevation to the top of the building is 25◦. Find the height to the ...

*April 28, 2015*

**trig**

Forces of 15 kg and 10 kg act on a point with an angle of 60◦ between the forces. Find the magnitude of the resultant force (to nearest tenth of a kilogram) and the angle (to the nearest degree) the resultant makes with the 15 kg force

*April 28, 2015*

**pre calculus**

the downhill ski club is organizing a ski trip. group tickets for the ski trip are priced at 20 for the first 100 skiers and a discount of 5.00 for each of the skiers over 100. a) write a formula to find the average cost of x skiers. b)write a formula to find the average cost ...

*April 3, 2015*

**pre calculus**

the downhill ski club is organizing a ski trip. group tickets for the ski trip are priced at 20 for the first 100 skiers and a discount of 5.00 for each of the skiers over 100. a) write a formula to find the average cost of x skiers. b)write a formula to find the average cost ...

*April 3, 2015*

**math**

A rocket ascends at an angle of 60.0˚ with the horizontal. After 1.00 min it is directly over a point that is a horizontal distance of 16.0 km from the launch point. Find the speed of the rocket.

*September 27, 2014*

**Calculus**

A rock is dropped from the top of a 400-foot-tall building. Its distance s (in feet) from the top of the building after t seconds is s(t) = 16t^2. How many seconds will it take the rock to hit the ground?

*June 8, 2014*

**Physics**

A 1.00kg ball and a 2.00kg ball are connected by a 4.63m long rigid, massless rod. The rod is rotating clockwise about its center of mass at 33.0rpm. What torque will bring the balls to a halt in 4.07s? My Attempt: Center of Mass = [(1kg)(0m) + (2kg)(4.63m)]/(1kg+2kg) =9.26/3...

*October 20, 2012*

**Algebra**

You need to bring all the x's to one side and all the numbers to the other: 2x/3 + 1/4= x/6 - 1/2 2x/3 - x/6 = -1/2 - 1/4 now lets multiply both sides by 3 to get rid of the 3 in the denominator of 2x/3 2x - 3x/6 = -3/2 - 3/4 now 3x/6 can simply down to x/2 2x - x/2 = -3/2...

*October 20, 2012*

**Chemistry**

A gas is allowed to expand at constant temperature from a volume of 2.00 L to 11.20 L against an external pressure of 1.500 atm. If the gas loses 256 J of heat to the surroundings, what are the values of q, w, and ΔU? Pay careful attention to units. -----My attempt: q = ...

*October 9, 2012*

**Chemistry**

A gas is allowed to expand at constant temperature from a volume of 2.00 L to 11.20 L against an external pressure of 1.500 atm. If the gas loses 256 J of heat to the surroundings, what are the values of q, w, and ΔU? Pay careful attention to units. -----My attempt: q = ...

*October 9, 2012*

**Programming logic**

Under the detailLoop() Statements In Else Part you have used wrong logic it should be like below else output newSalesperson, newAmount to allSales input newSalesperson, newAmount from newSales

*April 29, 2012*

**science**

Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.

*December 7, 2011*

**Math**

If the bisector of the vertical angle of the triangle bisects the base prove that the triangle is isosceles?

*August 20, 2011*

**physics-momentum HELP PLEASE tesst in two days**

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the end of the track ...

*May 3, 2011*

**Physics - Momentum **

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the end of the track ...

*May 2, 2011*

**physics**

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the end of the track ...

*May 2, 2011*

**statistics**

Mean will remain unchanged as 34. but if the new values are different new mean will be computed as 12(34)+2(34) ------------- 12+2 476/14 =34 sample standard deviation =

*May 2, 2011*

**math **

P(not red)=1-P(red) =1-6/48 =1-0.125 =0.875

*April 28, 2011*

**physics**

A 0.20-kg mass is hung from a vertical spring of force constant 55 N/m. When the spring is released from its unstretched equilibrium position, the mass is allowed to fall. Use the law of conservation of energy to determine (a) the speed of the mass after it falls 1.5 cm (b) ...

*April 25, 2011*

**math**

16x25/100 =4

*April 11, 2011*

**economics**

Your question is from Indifference Curve analysis. Budget Line always shifts upward or right ward due to increase in income and shifts downward or leftward due to decrease in income.

*April 11, 2011*

**Chemistry**

why is da value of heat of neutralization of NaOH AND HF is higher than that of its constant value??

*February 1, 2011*

**Chemistry**

why is da value of heat of neutralization of NaOH AND HF is higher dan that of its constant value??

*February 1, 2011*

**chemistry**

what happens when iron is reacted with iodine

*November 16, 2010*

**math**

Sorry, Ms. Sue but your incorrect, the height should be the short side because yield a volume of 81.8 in^3 and if the long side is the height the volume in 63.3 in^3

*April 16, 2010*

**Calculus 1**

14. The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $380 to drive 480 mi and in June it cost her $460 to drive 800 mi. a) Express the monthly cost C as a function of the distance driven d, assuming that a linear ...

*February 7, 2010*

**math**

Solve for x: 3/5(x+2)= x - 4

*January 29, 2010*

**physics**

commanly the formula is: *m1u1+m2u2+m1v1+m2v2* substitute the values according to this formulae. This data can be likely: mass of rifle=m1=2.0kg mass of bullet=m2=50g=kg= 50/1000=0.05kg velocity of gun=v1=0m/s velocity of recoil of gun=v2=?

*January 17, 2010*

**physics**

.10 mol of Argon gas is admitted to an evacuated 50cm cubed container at 20 degrees celsius. The gas then undergoes an isobaric heating to a temperature of 300 degrees celsius. What is the final volume of the gas?

*August 3, 2009*

**8th grade**

how can i improve my maths and english

*April 15, 2009*

**Physics**

Atomic Physics is concerned with structure and properties like reactions in the atom. while Nuclear physics is concerned wiht the strucuture. properties aswell as reactions taking place in the nucleus of the atom. So, we say that atomic means an atom and nuclear means nucleus...

*November 10, 2007*

**Math**

can you tell me how to do the math? Post a specific question and tell us what you don't understand about it.

*October 17, 2006*

**math**

sin theta = squre roote of 3 over 4 what is the number feared by pythagoreans, since it lies halfway between the only two intergers that can be both the perimeter and the area of the same rectangle Here is a hint. 16 is one of the integers. Calculate the results of 2x2 2x3 2x4...

*August 30, 2006*

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