Thursday
December 8, 2016

# Posts by Alfred

Total # Posts: 41

math
one-half a number minus 6 is 4. find the number
October 17, 2016

Algebra
Identical squares are cut off from each corner of a rectangular piece of cardboard measuring 7cm by 12cm. The sides are then folded up to make a box with an open top. If the volume of the box is 33cm^3, what is the largest possible length of each side of the square?
August 23, 2016

Math
A COMPANY CHARGES \$20.00 PER DAY PLUS 64 CENTS A MILE YOU DRIVE 100 MILES HOW MUCH DO YOU OWE?
July 17, 2016

geometry
penelope said that the side lengths of 4,12, and 8 could form a triangle because 4+8=12. is she correct
May 23, 2016

math
find the volume in cubic centimeters of the rectangular prism if the lenght is 2 1/2 cm and the width is 3 cm
February 4, 2016

math10
Let 23=x 408=y N= final answer then âˆš(23+âˆš408) - âˆš(23-âˆš408) becomes âˆš(x+âˆšy) - âˆš(x-âˆšy) Equating it to N âˆš(x+â...
January 9, 2016

chemistry
A 250.0mL sample of 0.0012M Pb(No3)2 (aq) is mixed with 150.0mL of 0.0640M Na (aq) should precipitation of PbI2 (s) ,Ksp=7.1¡Á10^-9, occur?
December 28, 2015

math
10. A military jet flies horizontally with a velocity of 450 m/s and 20,000 m above the ground. When the jet is straight above an artillery gun a shell is fired. Assuming the shell hits the jet. a. Calculate the horizontal component of the initial velocity of the shell. b. ...
September 20, 2015

science
how many liters of water do u need to mix with a 250 grams of steric acid
July 4, 2015

Economic
What are welfare payments or consumer subsidies?
May 29, 2015

math
An oval track is made by erecting semi circles on each end of a 58 m by 116 m rectangle. Find the length of the track and the area enclosed by the track.
February 24, 2015

Honors Algebra II
I've been stuck on a problem with my homework for a couple of minutes now. We are doing Systems of Two Equations, using the substitution method. The problem is: 4y-6x+20=0 3=(18/5)x+(21/10)y
August 27, 2014

Compensation and Benefits
Compare and contrast the following methods of job evaluation, and include examples that are not the same as in the textbook to demonstrate understanding: Lott, Benge, and Multiple Regression. Identify the key differences.
March 5, 2013

Physics
A girl of 50 kg slides down a 8 m long slide into a pool. The upper end of the slide is 4.0 m above the water and the lower end of the slide is at the level of the water. Assume a coefficient of friction of 0.20, find: a) the potential energy of the girl at the start of her ...
November 28, 2012

Physics
A golfer drives a golf ball with a velocity of 100 ft/sec and an angle of 45 degrees. A. find the time of travel for the ball. B. Find the balls range. C. Find the maximum height of the ball
November 5, 2012

calculus
The height of the the container/vessel is 4 cm so we use this to formulate the radius as h/4 in that specific time. V=1/3 pi (h/4)^2 (h) V=1/3 ((pi)(h^2))/16 (h) V=(pi h^3)/48 dv/dt= pi/48 ((3)(4)^2(2cm/sec)) dv/dt= pi/48 (96) dv/dt= (96 pi)/48 dv/dt= 2 pi cm per sec CHECKING ...
November 2, 2012

college algebra (math 90)
How do i graph this hyperbola? X^2+6x-3y^2=0
December 5, 2011

Thermodynamics (Chemistry)
Ag(s) + Cl2(g) --> 2AgCl(s) ∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the reaction at 500K?
August 8, 2011

Physical chemistry
Ag(s) + Cl2(g) --> 2AgCl(s) ∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the reaction at 500K?
August 8, 2011

Physical Chemistry
so the formula is W = nR∆T Thank you for the answer above:)
August 8, 2011

Physical Chemistry
1.6 mol of Neon gas are heated from 20.0 °C to 85.2 °C at a constant pressure of 1 atm. Calculate the work done. (R = 0.082057 L.atm/ K. mol)
August 8, 2011

pre-algebra
find the volume of a pyramid 9in.by9in. by3in.round to the nearest tenth
March 6, 2011

Physics
A fountain has a cylinder with holes placed on the side at heights of 1 m and 2 m. The water level is the cylinder is kept at a height of 3 m by an input type. The water emerges from the holes and strikes the fountain pool at some distance x. a. What distance, x, does the ...
February 6, 2011

pre-algebra
6y+42=4y
October 25, 2010

Algebra
Process of eliminiation method ? Is there a solution, infinity or no solution. I don't get it. Can anyone help me? 3r - 5s = -27 5r + 3s = 23
May 26, 2010

characterics of your biome
plants and animals
December 8, 2009

math
51...
August 31, 2009

Physics
1. What is the weight of a 24kg mass on Mars if its surface gravitaional field = 3.5N/KG? a) 235.2 N b) 84 N c) 24 kg d) 6.86 kg 2. A space shuttle is placed in a circular orbit around the Earth. It then thrusts its engine and moves to a new orbit, as shown below. Which ...
August 31, 2009

Physics
(a) Identify the significance of scientists James Clerk in hertz’s research. (b) Explain the physics of why hertz was able to detect sparkling in small detector coil when the detector was located in the position shown on the diagram above. (c) Describe two tests Hertz ...
August 31, 2009

Physics
Explain how a galvanometer functions, using electromagnetic principles.
August 31, 2009

Physics
A dc electric motor found in the lab was being examined by a student. It was connected to a power supply and it was not attached to any load. (a) The student stated, ‘when the motor is switched on, the electrical energy input should cause the motor to start rotating, and ...
August 31, 2009

Physics
A very important experiment was carried out at the end of the 1800’s involving testing for the speed of the earth through the ether. (a) State the name of this experiment (b) Describe why the light beams are perpendicular to each other at one stage of the experiment. (c...
August 31, 2009

Physics
A student spins a 1.2kg rock around above her head horizontally in an experiment which aims to model how satellites orbit the earth. The student counts 3 orbits per second when the string produces an orbit radius of 35cm. (a) Calculate the centripetal force acting on the rock...
August 31, 2009

Physics
(A) Identify how the gravitational potential energy changes as a shuttle takes off from the launch pad. (b) Explain the consequences to the space craft and its occupants if the shuttle is undergoing re-entry, and the angle of re-entry is significantly greater (steeper) than ...
August 31, 2009

Chemistry
Does the density of air change when it is heated in a closed container?
May 25, 2009

math
a baseball team a series of five games to play, with one game each day from monday through friday. If it rains on the day of a scheduled game, the game is cancelled. There is a 20 percent probability of rain each day. how likely is it that the team will get to play at least 2 ...
June 3, 2007

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