Friday
May 6, 2016

# Posts by Vinny

Total # Posts: 47

physical science
a head ball of mass 600g is thrown vertically upwards from ground level and reaches the maximum height of 20metres.calculate the initial velocity of the ball
February 18, 2016

Chemistry
How many grams of O2 are released into the environment during the production of the 5.1 grams of glucose?
December 7, 2015

english (jurassic park)
How does the protagonist in Jurassic Park by Michael Crichton (Dr. Alan Grant) change throughout the novel?
September 17, 2015

science
A solution is prepared by dissolving 0.490 g of an unknown compound in 50.00 mL of water. The freezing point of the solution is –0.201°C. Assuming the compound is a non-electrolyte, what is the molecular mass of the compound? Use 1.00 g/mL as the density of water.
August 30, 2015

math
6,300 and 530 The value of 3 in is times The value of 3 in
August 24, 2015

MATHSS PLESE HELP
Two flares are launched from a life raft. The height h of the first flare in metres above the sea is modelled by the formula h1= t2+t+1meters,and the second flare is h2=4-t where t is the time 12 in seconds after the flare is launched. Determine (i) Time taken and (ii) Height ...
April 11, 2015

MATHSS
A manufacture finds the total cost “C” for a product is expressed by C=3x2-8, and the total revenue “R” by R=3x-2, where x is the number of units sold. What is the breakeven point (where total cost=total revenue) to the nearest unit?
April 11, 2015

MATHSS
Two resistors in series, R1 and R2, have a total resistance of 1,600 ohms. The resistance of R2 is 560 ohms less than twice R1. Find the resistance of R1 and R2.
April 11, 2015

MATHSS
he law connecting friction F and load L for an experiment is of the form F =aL+b, where a and b are constants. When F =5.6, L=8.0 and when F =4.4, L=2.0. Find the values of “a” and “b “and the value of F when L=6.5.
April 11, 2015

MATHSS
The angle of a rotating shaft turns in t seconds is given by theta= ω+1/2at^2 and it is given that ω=3 2 rad/s and α=0.6 rad/s to complete θ=4 radians. Determine the time taken to complete θ=4 radians.
April 11, 2015

MATHS
A manufacture finds the total cost “C” for a product is expressed by C=3x2-8, and the total revenue “R” by R=3x-2, where x is the number of units sold. What is the breakeven point (where total cost=total revenue) to the nearest unit?
April 11, 2015

Physics
F=m*a It only asks about the force from the dragster, so ignore gravity. F = 72*a a = (Vf-Vo)/t a=61/7.8 F = (72)(71/7.8)
November 30, 2014

AP Calculus
infinity, (x-1)^2 goes towards a tiny positive number.
November 30, 2014

maths
simplify by removing radical signs and negative indices where ever they occur:- ¡Ì4 power -3/4
July 25, 2014

DrBob222 you're an idiot. The first is true and the second is a conductor
May 21, 2014

Math
Start with 1 and 2, and subtract (1+2) from the sum 26: 26 - (1+2) = 23. Now, since the largest number used will be 12 and we've just used 1 and 2, the remaining edge number must be 11: 23 - 12 = 11 So the first edge set is {1,2,11,12}, the next set is {1,3,10,12}, and the...
May 7, 2014

Physics
During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 16.6 m above the field had a kinetic energy of 35.4 J. How fast was the ball booted by the player on the field?
March 18, 2014

Honors Physics
0.5 kg ball at the peak of the kick 16.6 m above the field had a kinetic energy of 35.4 J. How fast was the ball booted by the player on the field?
March 18, 2014

Physics
The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.
November 14, 2013

Physics
The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.
November 14, 2013

Physics
The launching speed of a certain projectile is 9.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.
November 14, 2013

general physics
The highest barrier that a projectile can clear is 18.8 m, when the projectile is launched at an angle of 59.0 ° above the horizontal. What is the projectile's launch speed?
July 3, 2013

Math
how can you go about in calculating vertical and horizontal asymptotes?
April 25, 2013

English
Yes, it is correct
April 24, 2013

Chemistry
How much of a 2.0 molar NaCl solution would you need to make 250 mL of a .15 molar NaCl solution?
January 15, 2013

Economics
Explain how an effective price ceiling affects buyers and how it affects sellers in a competitive market.
September 17, 2012

chemistry
how can i find pH using scientific notation? 1*10^1 1*10^2
May 3, 2012

Chemistry
C2H5OH + O2 -> C2H4O2 +H20 This reaction drastically changes the taste of wine, if 100.0 mL of wine initially contained 12.0 g of ethanol and after a period of time 4.00 g of acetic acid were detected, what percent of the ethanol had been converted?
June 7, 2011

Chemistry
Determine how many grams of active antacid ingredient AL(OH)3 would be necessary to neutralize the HCL in 50.0 mL of .0100 M HCL (an approximation of the conc. of HCL in the stomach) 3HCL9aq)+AL(OH)3(s)-> AlCL3 (aq) = 3H2O (L)
June 7, 2011

Chemistry
2MnO4-(aq) +5 H2O2 (aq) + 6H+(aq) -> 5 O2(g) + 2 (Mn2+(aq) = 8H2O (l) If a 25.00 ml sample of hydro peroxide required 25.25 ml of .353 M KMNo4 solution to react with all the hydrogen perozide what was the molarity of the hydrogen peroxide solution?
June 7, 2011

Chemistry
What volume of .300 M CaCl2 is needed to react completely with 40.00 Ml of .200 M H2PO4. according to the following equation 3 CaCl2 (aq) + 2 H3PO4 (aq)-> Ca3(po44)2 + 6 HCL (aq)
June 7, 2011

Chemistry
Thank you!
June 7, 2011

Chemistry
.220 mol per liter
June 7, 2011

Chemistry
0.255 g sample of H2C2O4 required 25.70 mL of NaOH to neutralize, what would you report as the molarity of NaOH solution? the reaction is as follows: H2C2O4(aq) +2 NaOH (aq) -> Na2C2O4(aq) +2 HOH (l)
June 7, 2011

math
What is 5,280 feet divided by 26 miles? 5th grade
March 31, 2011

Chemistry
What are all the resonance Structures of Carbon Tetraoxide?
November 9, 2010

calc
(e^x)e^x+1)/(e^x-1)=8
October 18, 2010

precalc
yes it is x squared
October 18, 2010

how come a chromosome is not visible in an onion cell
September 27, 2010

Chem
plz help :(
November 7, 2008

Chem
Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for...
November 7, 2008

What did Henry Hudson negotiate with his crew and the natives?
October 7, 2008

How Hudson could have negotiated to improve his circumstances with his crew and the natives?
October 1, 2008

science
The number of letters that could represent an element is?
November 23, 2007

climate graphs
I need a climate graph of Rome Italy NOW! my homework is due next period!
March 4, 2007

Physics
Emily passes a soccer ball 9.7 m directly across the field to Kara, who then kicks the ball 11.7 m directly down the field to Luisa. What is the magnitude of the ball’s total displacement as it travels between Emily and Luisa? Answer in units of m 016 (part 2 of 2) 10.0 ...
December 10, 2006

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