Saturday
September 20, 2014

Posts by John


Total # Posts: 6,242

Physics
A basketball is released from a height of 3m onto a hard surface. What height will the ball rebound to and why ?
February 2, 2012

math
20 mg = 20 x 10^-3 g 90 mcg = 90 x 10^-6 g no. of doses = 20 x 10^-3 / 90 x 10^-6 = 222
February 2, 2012

Physics
Can you please explain how to find time by using step by step.
February 1, 2012

Physics
urprisingly, very few athletes can jump more than 2.2 ft (0.66 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 2.2 foot vertical jump. Then double it for the "hang-time" -- the time one's feet are off the ground.
February 1, 2012

math
Gwen was planting tomato plants in a row 6 2/3 yards long. She put the plants 2/3 yard apart. How many plants were in the row?
February 1, 2012

chemistry
if 3.60g of NaCl is dissolved into 75.00mL of water, what is the concentration of this salt solution, in m/v%?
January 31, 2012

math
10 friends share 7 dollars,what is the fraction?
January 31, 2012

math
marcia said that if she estimates 73 x 7 ,the product will be less that the exact answer. is she correct ? explain.
January 31, 2012

Calculus
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the? Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about y = 8. 27y = x^3, y = 0, x = 6 V=
January 31, 2012

programming
Write pseudocode (using pascal) to accept as input names of an unspecified number of equipment rented, the name of the company, the number of days the equipment was rented for and the sales amount. The algorithm must determine the number of times each type of equipment was ...
January 30, 2012

programming
Write pseudocode to accept as input names of an unspecified number of equipment rented, the name of the company, the number of days the equipment was rented for and the sales amount. The algorithm must determine the number of times each type of equipment was rented, as well as...
January 30, 2012

Math
If REINY was reading story problems and if he did not know the algorithm steps to share to a simple problem, would he have time to be sarcastic?
January 29, 2012

math
126 books were donated to the school. there are seven classes and each will get an equal number of the books for its classroom library. how many books will each classroom get?
January 29, 2012

COLLEGE MATH- SYSTEMS OF EQUATIONS
a. A movie theater sold 450 tickets to a movie. Adult tickets cost $8 and children's tickets cost $6. If the theater took in a total of $3,250 from ticket sales, how many of the tickets were adult tickets and how many were children's tickets?
January 29, 2012

college soc 120
utilitarianism, deontology, and virtue ethics of gay marriage
January 29, 2012

algebra
mary went to the store for some fruit. The apples were $1.00 per pound and the oranges were $0.50 per poumd. She spent $5,00 all together and took home a total of 8 pond of fruit. How many ponds of apples and oranges did she buy?
January 27, 2012

soc.
The outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...
January 26, 2012

Math
Solve for x in terms of y: y = (x^3/4)-(x^2/3)-(x/2)+3cosx
January 26, 2012

physics
in the hydraulic machine shown, you observe that when the small piston is pulled down 10cm, yhe large piston is raised 1 cm. if the small piston is pushed down with a force of 100n, what is the most weight that the large piston can support?
January 26, 2012

geometry
Lines M and T are parallel with a Transversal line P. [Labeling for the angles on line P intersecting M are, top right corner is angle 1, the top left is angle 2, the bottom left is angle 3, and the bottom left is angle 4. This pattern {top left, top right, bottom left, bottom...
January 25, 2012

math
How many branches will the number 17 have in its completed factor tree?
January 25, 2012

math
What is the value of point X on the number line?
January 25, 2012

Physics
10.6
January 24, 2012

math
John studied for 22.5 hours over a period of 3.5 days. On average, about how many hours did he study each day?
January 24, 2012

physics
Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are negligible, and the boat ...
January 22, 2012

physics
Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are negligible, and the boat ...
January 22, 2012

physics
Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are negligible, and the boat ...
January 22, 2012

physics
Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are negligible, and the boat ...
January 22, 2012

physics
Three point charges are fixed in place in a right triangle. What is the electric force on the q = -0.63 µC charge due to the other two charges? (Let Q1 = +0.83 µC and Q2 = +0.9 µC.) what is the magnitude N, and direction in degrees ° above the positive x-...
January 22, 2012

physics
A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and position at the end of ...
January 22, 2012

physics
A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and position at the end of ...
January 22, 2012

physics
A stunt woman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 13.5 m/s, and the woman is initially 2.60 m above the level of the saddle. (a) What must be the horizontal distance between the saddle and limb when ...
January 22, 2012

calculus
Find the limits Lim(sin kt/t) t approaches 0 and (K is constant) How do you start this and go about it stepwise? Does knowing (K constant) help me to solve this?
January 20, 2012

chemistry
If 22.40g of potassium react with silver sulfide what mass of each product will form?
January 19, 2012

chemistry
What mass of aluminum hydroxide will be produced when 0.460 grams of aluminum sulfide react with water? How many grams of hydrogen sulfide are produced, according to the following equaton? Al2S3 + H20 -------> Al(OH)3 + H2S
January 19, 2012

math
An electron moving along the x axis has a position given by x = 14te^-5t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?
January 19, 2012

chem
thank you
January 18, 2012

chem
calculate the PH of [OH-] = 4.5×10−3 M Please show how you work this problem.
January 18, 2012

CHEM
Write an equation for the acid–base reaction between ammonium ion and sulfate ion. a. why does the equillibrium favor the reactants? This was my answer NH3+H2O--><--(NH4)2SO4
January 18, 2012

CHEM
thank you
January 18, 2012

CHEM
so the temperature doesnt have a whole lot to do with this reaction?
January 18, 2012

CHEM
Which of the following reactions should be fast at room temperature? Which would be slow? Explain A. KCl+AgNO3->KNO3+AgCl B. H2(g)+Cl2(g)->2 HCL(g) I would assume that B would react faster because it has all gases.??
January 18, 2012

chem
Thank You
January 18, 2012

chem
ok so A.20 seconds B. 80 seconds C. 120 seconds
January 18, 2012

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

Pages: <<Prev | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | Next>>

Search
Members