Wednesday
October 22, 2014

Posts by John


Total # Posts: 6,303

chem
the lower the temperture the longer it should take correct?
January 18, 2012

chem
IF a reation generally takes 40 seconds to occur at 45 degrees C, how long should the reaction take a t the following temperatures? A. 35C B. 55C C. 65C
January 18, 2012

maths
what is ?
January 18, 2012

Chemistry
Is liquid-liquid extraction or solid-phase extraction a better approach to process very large amounts of water?
January 18, 2012

chemistry
40.0 x 10^3 divide by 400 x 10^-3 = 100 000 tablets
January 18, 2012

science
Messenger RNA (mRNA)
January 18, 2012

physics
distance covered in first two hours = 40 mph x 2 = 80 miles distance to be covered in the remaining three hours = 400 - 80 = 320 miles average speed for remaining three hours = 320 / 3 = 106.667 mph
January 18, 2012

physics
distance covered in first two hours = 40 mph x 2 = 80 miles distance to be covered in the remaining three hours = 400 - 80 = 320 miles average speed for remaining three hours = 320 / 3 = 106.667 mph
January 18, 2012

algebra
tow company A charges $50 + m and company C charges 80 + .1m. If both companies charged the same, how far are you from your garage? Are they asking for 2 different #? If so,I am 30 miles from A and 0 miles from C. Correct?
January 18, 2012

Math
76 degrees and 76 degrees 28 degrees and 124 degrees
January 18, 2012

Math
y = x - 1
January 18, 2012

PHYSICS
Impulse = Change in momentum = F x t = 27.3 x 0.18 = 4.9 Ns
January 18, 2012

physics
x = x(initial) + v(initial)t + 1/2 at^2 0 = 1.5 + 0 + 1/2 (-10)t^2 1.5 = 5 t^2 t = 0.55 seconds v = v(initial) + at v = 0 + (-10)(0.55) v = -5.5 m/s (i.e. it will reach the ground at 5.5 m/s)
January 18, 2012

STRESS MANAGEMENT TECHNIQUES
Which of the following physiological symptoms are signs of stress? A. Hearing and vision loss B. Arthritis and carpal tunnel syndrome C. Headaches and elevated blood pressure D. Dental cavities and bone loss
January 18, 2012

Algebra I
ARGBEBTGWEV%$WT@$WC$$$$$$EV#QT%EW UH%VHTWECX
January 17, 2012

Physics
A man can throw a ball a maximum horizontal distance of 175 m. The acceleration of gravity is 9.8 m/s^2. How far can he throw the same ball vertically upward with the same initial speed?
January 17, 2012

math
9000
January 17, 2012

chemistry
How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 mL of 0.0236 M Th4+ by the following reaction? Th4+ + 4F - → ThF4 (s)
January 15, 2012

math
Brie's cabinet has 6 cans of vegetable soup,4 cans of chicken soup, and 8 cans of beef barley soup. She will pick a can of soup from the cabinet at random. 1. What is the probability brie will pick a can of vegetable soup? Write your answer in ratio from. 2. What is the ...
January 15, 2012

math
The barkleys have a set of plastic picnic cups and dishes that come in 6 different colors. Blue, Red, Green, Yellow , Orange, and Purple. 1. How many possible cup-and-dish combinations can they make with such a set? 2. peter will pick a dish and a cup without looking.What is ...
January 15, 2012

5 th grade algebra
that's 36.375
January 14, 2012

Science
How does water's oxygen content affect freezing point?
January 14, 2012

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
January 12, 2012

Economics
There are two groups of individuals of equal size, each with a utility function given by U(M) = sq. root(M), where M = 100 is the initial wealth level for every individual. Each member of group 1 faces a loss of 36 with probability 0.5. Each member of group 2 faces the same ...
January 11, 2012

math
An adult has 206 bones of those 2.9% are found in the inner ear. How many bones in the human body are found in the inner ear?
January 10, 2012

law and ethics -nursing
What ethical dilema could a wife with cancer possibly face? What ethical dilema could her husband possibly face when he has depression that he doesnt treat? There son is a 24 year old whom has down syndrom and needs his parents for care.
January 9, 2012

nursing
Two ethical dilemmas potentially faced by a family whom the wife has colon cancer and the son is a 24 year downs. The wife mainly cared for him and the husband is lost and depression and has been drinking
January 9, 2012

nursing ethics and law
List two ethical dilemmas potentially faced by the Allen family in this simulation
January 9, 2012

physic
an ideal fluid flows through a pipe hat runs up an incline and gradually rises to a height H. The cross sectional area of the pipe is uniform. compared with the flow at the bottom of the incline, the flow at the top is a) moving slower at lower pressure b) moving slower at ...
January 8, 2012

math
Pizzaz pg.103 Did you hear about...
January 8, 2012

business
You have recently learned that the company where you work is being sold for $275,000. The company’s income statement indicates current profits of $10,000 which have yet to be paid out as dividends. Assuming the company will remain a “growing concern” into the ...
January 7, 2012

Calculus
Find the particular solution that satisfies the intial condition: xdy - (2xe^(-y/x)+y)dx = 0
January 5, 2012

chemistry
I am a freshman in college, and am taking a placement test soon, but haven't seen chemistry since 10th grade. I'd appreciate any help I can get from anyone here to help me solve this problem: Hydrogen and sulfur chemically combine to form the gas hydrogen sulfide, ...
January 5, 2012

Pre Calc
evaluate the trigonometric function of the given quadrantal angle. tan 1400° cos 9π cos 13π/2 sin (-17π)
January 4, 2012

nursinmg ethics and law
Identify and explain nursing management decisions relating to standards of practice that pose legal implications.
January 4, 2012

physics
A small component of 1cm x 1 cm x 1 cm is subject to external forces coming from all directions. Design a holder for the component capable of measuring those forces through sensors that are embedded in the holder and capable of measuring forces in x, y, and z. Without loose ...
January 4, 2012

physics
A small component of 1cm x 1 cm x 1 cm is subject to external forces coming from all directions. Design a holder for the component capable of measuring those forces through sensors that are embedded in the holder and capable of measuring forces in x, y, and z. Without loose ...
January 4, 2012

English
What is the meaning of "When once you have tasted flight, you will forever walk the Earth with your eyes turned skyward, for there you have been, and there you will always long to return"?
January 3, 2012

physics
A stone is projected upward at an angle of 60degree to the horizontal from the top of a tower of height 100meter and it hits the ground at a point. If the initial velocity of projection is 100meter. Calculate the maximum height of the stone above the ground. Calculate the time...
January 3, 2012

physics
A stone is projected upward at an angle of 60degree to the horizontal from the top of a tower of height 100meter and it hits the ground at a point. If the initial velocity of projection is 100meter. Calculate the maximum height of the stone above the ground. Calculate the time...
January 3, 2012

mathhh
So its A?
December 31, 2011

mathhh
Which property is illustrated by the equation (rs)t=r(st)? A) associative B)Communtative C)Distributive D)Identity Help me please
December 31, 2011

Physics
A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
December 29, 2011

Physics
A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
December 29, 2011

Physics
A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
December 29, 2011

grammar
All I got were a doll, a hat, and a bat. subject-verb agreement
December 20, 2011

math
Let f(x)= 4 and g(x)= ãx-2 : X2 - 4 f o g(11)=ANSWER: Square root X-2/ 11-2 =ã9=3 4/32 -4 = 4/5 f o f(0)=ANSWER Determine the Domain of f o g=ANSWER:
December 18, 2011

calc
Let f(x)= 4 and g(x)= ãx-2 : X2 - 4 f o g(11)=ANSWER: ãX-2/ 11-2 =ã9=3 4/32 -4 = 4/5 f o f(0)=ANSWER Determine the Domain of f o g=ANSWER:
December 18, 2011

cal
1. Given the function f(x) and g(x) below determine the following: A) f o g(3) ANSWER: B) f o g(-4) ANSWER: C) g o f(0) ANSWER: D) f o f(1) ANSWER: E) g o g(-2) ANSWER:
December 18, 2011

math
Suppose that you are a CSI and you are called to a crime scene at 12:00 noon and find a dead body in a walk-in that is a constant 40¨H. The initial temperature is 85¡ã and after 20 minutes. The body¡¯s temperature is 84¡ã. Using Newton&...
December 18, 2011

CHEMISTRY
546.0 J
December 16, 2011

Math (URGENT)
solve for x, 0 ¡Ü x < 360 tan2x+1=0 My answers: 22.5, 157.5, 202.5, 337.5 Textbook: 67.5, 157.5, 247.5, 337.5 I don't understand. Am I wrong? Thanks for your help.
December 16, 2011

trig
How do you find 2.8 revolutions per second in radians? I understand that two revolutions would be equal to 4pie but how do you find the 0.8?
December 14, 2011

trig
A bolt secured to a bridge is being acted upon by forces being exerted by two cables attached to the bolt. The force vector for one of the cables is represented by F1 = <1.7,9.8>. The other force vector, F2, is known to have a magnitude 5 and a direction angle of 10 ...
December 14, 2011

math
how did you get the denominators to be the same?
December 14, 2011

trig
Find ALL solutions to the equation on the interval [0, 2pie]: 2sin(1/2X) = 1
December 14, 2011

Anthro
none of the 188,000 results are good fr information
December 13, 2011

Anthro
“How do images challenge our assumptions and understanding of society as relatively cohesive, homogenous and stable social units?” (feel free to simply summarize potential ideas)
December 13, 2011

English (URGENT)
How many paragraphs does a literary review have? This is a writing assignment for Grade 12 English. I need to write literary review on an article I find on the internet. I have an identification paragraph that talks about the author's credentials. Then I have a paragraph ...
December 12, 2011

world geography
in a traditional economic system which type of good is most often produced?
December 12, 2011

calculus
A tank with a rectangular base and rectangular sides is to be open at the top. It is to be constructed so that its width is 4 meters and its volume is 36 cubic meters. Building the tank costs $10 per square meter for the base and $5 per square meter for the sides. a) Write a ...
December 12, 2011

math
thank you soooooooooooo much!!!!
December 11, 2011

statistics
Three percent of the widgets produced by machine 1121 are defective. what is the probablity that a box of 30 widgets produced by that machine contains two or more defective widgets?
December 10, 2011

math
7 in by 8 in
December 8, 2011

math
A room measures 12 feet by 15 feet. find the scale that would allow the room to be shown as large as possible on a piece of paper. explain your reasoning.
December 8, 2011

College Physics
Thank you very much
December 6, 2011

College Physics
A monatomic ideal gas is compressed adiabatically from a pressure of 1.39 105 Pa and volume of 260 L to a volume of 39.0 L. What is the new pressure of the gas?
December 6, 2011

math
Two trains depart at the same time from the same station and travel in opposite directions. One train travels 25 mph faster than the other train. After 2 hours the trains are 162 miles apart. Find the speed of each train.
December 5, 2011

math
Two trains depart at the same time from the same station and travel in opposite directions. One train travels 25 mph faster than the other train. After 2 hours the trains are 162 miles apart. Find the speed of each train.
December 5, 2011

Science HELP
when traveling only a tiny distance through rock below the earths surface what happens to alpha particles ?
December 5, 2011

Science
what can alpha particles cause significant damage to ?
December 5, 2011

calculus
Being some distance from a mountain a man looks up at a 9 degree angle to see the top of the moutain. he then moves 13 miles away from the mountains at looks up at a 3.5 degree angle to see the top of the mountain. How tall is the mountain?
December 4, 2011

AP Chemistry
5 J
December 4, 2011

Physics
A child of mass 40 kg stands beside a circular platform of mass 100 kg and radius 1.8 m spinning at 2.6 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; rad/s b) She then walks to the center and stay there. What is the angular ...
December 4, 2011

Physics
A circular disk of mass 0.3 kg and radius 40 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.1 rad/s. a) Find the new angular velocity of the combination; A circular disk of mass 0.3 kg and ...
December 4, 2011

Physics
A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable. a) Find the new angular speed. b) what is the change in kinetic energy?
December 4, 2011

Physics
A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable.
December 4, 2011

biology
Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this variation might have on the functioning of enzymes in these organisms. Suggest some ways ectothermic organisms might cope with this problem.
December 4, 2011

geometry
The area of a particular regular hexagon is x^3 square units, where x is the measure of the distance from the center of the hexagon to the midpoint of a side. what is the side length of a hexagon?
December 3, 2011

Precalculus
A builder has 600 feet of fencing to enclose three adjacent rectangular partioned areas. Find the largest possible enclosed area of the partioned areas.
December 2, 2011

Physics
A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other and the combination is free to rotate on a fixed axle that is perpendicular to a horizontal frictionless table top. The rotational inertia of the ...
December 2, 2011

math
A secretary can type 8 pages per hour.There are a total of 96 pages to type. How many pages remain to be typed after 6 hours?
December 2, 2011

Math
In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?
December 1, 2011

physics
A bicyclist is traveling at 19.3 km/h when he speeds up with a constant acceleration of 0.67 m/s2. What is his velocity after 5.00 s?
November 30, 2011

Science
A block of mass 3.1 kg hangs vertically from a frictionless pulley of mass 5.9 kg and radius 14 cm. Treat the pulley as a disk. Find: a) the acceleration of the block; b) the tension in the rope; c) the speed of the block after it has fallen 55 cm, assuming it started at rest:
November 30, 2011

Science
A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? b) How many revolutions does it make in 15 s if it starts at rest?
November 30, 2011

Science
Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of particle:
November 30, 2011

Science
Four particles in the xy plane have the following masses and coordinates: 1 kg at (3 m, 3 m), 2 kg at (-2 m, 4 m), 3 kg at (3 m, -2 m) and 4 kg at (-3 m, -4 m). Find the total moment of inertia about: x-axis? y-axis? z-axis?
November 30, 2011

Science
At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s?
November 30, 2011

Science
the work is on a forum that actually helps ppl
November 30, 2011

Science
Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it has...
November 30, 2011

3rd grade math
8*5=40 40 add in two zeroes to get 4000
November 29, 2011

Future
Just Don't put your hopes too high. I've seen peoples lives crushed when they got rejected from their dream school. Some advice: Get Involved in Social Activities Really have to make an Impact -Its not just about the grades, but although those are really important. *PS...
November 29, 2011

Economics
How large would a corrective tax need to be to move this market from the equilibrium outcome to the socially-optimal outcome? A. An amount equal to P' minus P. B. An amount equal to P'. C. An amount equal to P. D. An amount equal to the external cost.
November 29, 2011

Economics
Suppose planting flowering shrubs creates a positive externality equal to $7 per shrub. Further suppose that the local government offers a $7 per-shrub subsidy to planters. The number of shrubs that are planted is then A. less than the socially optimal quantity. B. greater ...
November 29, 2011

Physics
At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s? number of revolutions?
November 28, 2011

Physics
Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it has...
November 28, 2011

Physics
A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? rad/s^2 b) How many revolutions does it make in 15 s if it starts at rest?
November 28, 2011

Physics
Smith
November 28, 2011

business
Does anyone know of any specific business turnaround strategies that have failed in the past? What happened with GM? Did they try to do a turnaround? What was their strategy and why did it fail?
November 26, 2011

Pages: <<Prev | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | Next>>

Search
Members