Friday
August 22, 2014

Posts by Alfred


Total # Posts: 25

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
225j
January 24, 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

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

Algebra
a.10
January 10, 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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