Thursday

July 31, 2014

July 31, 2014

Total # Posts: 26

**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?

**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 ...

**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...

**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 = h...

**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 = h...

**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

**science**

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

**Math**

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

**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 befo...

**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 befo...

**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 befo...

**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 =

**math **

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

**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) th...

**math**

16x25/100 =4

**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.

**Chemistry**

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

**Chemistry**

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

**chemistry**

what happens when iron is reacted with iodine

**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

**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 relat...

**math**

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

**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?

**8th grade**

how can i improve my maths and english

**Math**

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

**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...

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