Total # Posts: 708
If the column of water in the water barometer fore to a height of 35ft, what would the atmospheric pressure be in mm Hg? mmH20X(density of water/density of Hg)= mmHg Density of water=0.99707 Density Hg=13.5340
February 11, 2011
Business and Administrative Communications
Identify the complete sentence that is correctly punctuated. a. Most people support the sex offender registry, I worry that this information will promote discrimation. b. Most people support the sex offender registry; and I worry that this information will promote discrimation...
February 5, 2011
Use the remainder theorem to findvP(-2) for P(x)=2x^4+4x^3-5x^2+4. Specifically, give the quotient and the remainder for the associated division and the value of P(-2). Quotient= Remainder= P(-2)=
February 5, 2011
A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 30.0 N. The coefficient of static friction between his hands and the book ...
January 27, 2011
A 49-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion. Find the force (magnitude and direction) exerted on her by the bungee cord at an instant when her downward acceleration has a magnitude of 7.3 m/s2. Ignore ...
January 27, 2011
Charges of −4q are fixed to diagonally opposite corners of a square. A charge of + 5q is fixed to one of the remaining corners, and a charge of + 3q is fixed to the last corner. Assuming that ten electric field lines emerge from the + 5q charge, sketch the field lines ...
January 24, 2011
A large box whose mass is 20 kg rests on a frinctionless floor. A mover pushes on the box with a force of 250 N at an angle of 35 degrees below the horizontal. What is the acceleration of the box across the floor?
January 16, 2011
Topic- Each students will pick three things to write a consumer report on. It's your choice. Compare-For each item that you pick you will need to pick two other items to compare it against. (if you choice restaurants, then you need to pick one, then pick two other ...
December 11, 2010
A 0.075 kg ball in a kinetic sculpture moves at a constant speed along a motorized conveyor belt. The ball rises 1.32 m above the ground. A constant frictional force of 0.350 N acts in the direction opposite the conveyor belt's motion. What is the net work done on the ball?
December 9, 2010
For a certain transverse wave, the distance between two successive crests is 3.11 m, and 5 crests pass a given point along the direction of travel every 12.16 s. Calculate the wave speed.
November 21, 2010
Two samples of water of equal volume are put into two dishes and kept at room temperature for several days. The water in the first dish is completely vaporized after 2.8 days while the water in the second dish takes 8.3 days to completely evaporate.What can you conclude about ...
November 18, 2010
a skateboarder moving at v = 4.8 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is h = 0.54 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring ...
November 11, 2010
Please help me do these problems. I dont understand how to do weighted averages. Mrs. Gleason invested a portion of 32000 dollars at 9% interest and the balance at 11% interest. How much did she invest at each rate if her total income from both investments was 3200
November 9, 2010
A 0.145 kg baseball pitched at 38.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 55.0 m/s. If the contact time between bat and ball is 3.40×10−3 s, calculate the average force between the ball and bat during contact.
November 8, 2010
A 2.99 kg ball is dropped from the roof of a building 161.9 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.3 N on the ball. How long does it take to hit the ground> The acceleration of gravity is 9.81 m/s2. Answer the units in s...
November 7, 2010
2. Explain how the tension force gets transmitted along from one end of a string to the other. Does the amount of force that gets transmitted depend on how elastic or stretchable the string is? Explain.
October 22, 2010
train A and B are traveling in the same direction on parallel tracks. train A is going 80 miles per hour train B is going 84 miles per hour. train A past a station at 2:15 am train B passes at 2:45 am what time will train B catch train A
October 21, 2010
Complete and balance the reaction Al(s) + Pb2+(aq) ! using the smallest possible integers. I got: 2Al(s) + 3Pb2 ==> Al2Pb3 Calculate the standard free energy. Faradays constant is 96485 J V · mol Answer in units of kJ/mol. I know the formula is -nFE but when I ...
October 21, 2010
A solution is prepared in which a trace or small amount of Fe+2 is added to a much larger amount of solution in which the [OH]- is 1.0M*10^-2. some Fe(OH)2 precipitates. the value of Ksp for the salt is 8.0*10^-10. assuming that the hydroxide ion concentration is 1.0M*10^-2 ...
October 19, 2010
Assignment Calculate the pH, pOH, [H+], and [OH] for each of the following solutions. Show all work. (10 Points) Solution Composition of Starting Materials 1 0.10 M acetic acid 2. 5 mL 0.10 M acetic acid + 5 mL wa 3 1 mL 0.10 M acetic acid + 99 mL water 4 5 mL...
October 11, 2010
rry leaves home at 4:07 and runs at a constant speed to the lamppost. He reaches the lamppost at 4:11, immediately turns, and runs to the tree. Larry arrives at the tree at 4:22. What is Larry's average velocity during his entire trip, if the lamppost is 363.0 m west of ...
October 5, 2010
50.0 mL of water is heated from 60 C to 85 C. How much heat was absorbed by the water sample in joule Can anybody help me understand the process or rules to figuring this out? Thanks
October 3, 2010
How many molecules of Cl2 would be formed from the reaction mixture that produces the greatest amount of products? Consider the following reaction: 4HCl(g)+ O2(g)to 2H2O +2Cl2(g)
September 28, 2010
It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current years principle from the long-term liabilities. This entry reduces the long-term liabilities and increases the current liabilities. You are the bookkeeper for Bikers ...
September 20, 2010
A jetliner can fly 6.50 hours on a full load of fuel. Without any wind it flies at a speed of 2.15 102 m/s. The plane is to make a round-trip by heading due west for a certain distance, turning around, and then heading due east for the return trip. During the entire flight, ...
September 19, 2010
Case Study â Memorial Health System CPOE Implementation Identify at least five indicators of project failure that manifest themselves in this case study. 2. For each of those indicators, describe what you might have done differently to eliminate or minimize ...
September 13, 2010
this is the case study and instead of the landor one i put lack of involvment Case Study â Memorial Health System CPOE Implementation Memorial Health System is an eight-hospital integrated health care system in the Midwestern United States. The health system ...
September 13, 2010
Identify at least five indicators of project failure that manifest themselves in this case study. Are these right ? these are a few i have came up with: organized inertia lack of clarity of pupose lack of landor project status report insufficient leadership support
September 13, 2010
You make $ 90000 a year, and you get a 10% raise. Your new salary is $ .??? The next year you get a 10% cut. Your new salary is $ ????. That is ??? % less than your initial salary. How would I go about solving this??
August 26, 2010
Two algebra II questions... simple, i believe? give a numerical example to show that subtraction is not commutative. and give a numerical example to show that subtraction is not associative. thanks(:
August 18, 2010
A scientist has devised a new method of isolating individual particles. He claims that his method enables him to detect simultaneously the position of a particle along an axis with a standard deviation of 0.12 nm and its momentum component along the axis with a standard ...
August 16, 2010
Please help me solve this! The spectrum of the sodium atom is detected in the light from a distant galaxy. If the 590.0 nm line is redshifted to 658.5 nm, at what speed is the galaxy receding from the Earth?
August 11, 2010
(a)Assuming that only gravity is acting on it, how far does an electron have to be from a proton so that its acceleration is the same as that of a freely falling object at the Earths surface? (b)Suppose the Earth were made up only of protons but had the same size and ...
July 29, 2010
You have just won the lottery and will receive $1,000,000 in one year. You will receive payments for 30 years, which will increase 5 percent per year. The appropriate discount rate is 8 percent. What is the present value of your winnings?
July 10, 2010
I'm having trouble with question 2, please help The velocity of an object in simple harmonic motion is given by v(t)= -(0.275 m/s)sin(23.0t + 2.00π), where t is in seconds. 1) What is the first time after t=0.00 s at which the velocity is -0.100 m/s? 2) What is the ...
June 13, 2010
The velocity of an object in simple harmonic motion is given by v(t)= -(0.275 m/s)sin(23.0t + 2.00π), where t is in seconds. 1) What is the first time after t=0.00 s at which the velocity is -0.100 m/s? 2) What is the object's position at that time? I tried solving ...
June 12, 2010
Two blocks of masses M and 5M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them, as seen in the figure below: img404.imageshack.us/img404/8349/sbpic0906.png 1) A cord ...
June 12, 2010