Questions Asked on
February 21, 2011

physics
Archer pulls her bow string back 0.4 m by exerting a force that increases uniformly from zero to 230 N. What is the equivalent spring constant of the bow? This is what I did: F = kx 230 N = k(0.4 m) 575 = K My question is this: Is the answer just 575 or is
asked by Nabil 
Chemistry
Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
asked by Joshua 
Calculus  Functions?
#1. A cubic polynomial function f is defined by f(x) = 4x^3 +ax^2 + bx + k where a, b and k are constants. The function f has a local minimum at x = 1, and the graph of f has a point of inflection at x= 2 a.) Find the values of a and b #2. Let h be a
asked by Amy 
Physics
During a baseball game, a batter hits a popup to a fielder 82 m away. The acceleration of gravity is 9.8 m/s2 . If the ball remains in the air for 6.9 s, how high does it rise? Answer in units of m.
asked by Aditya 
history
How did the Vietnam War, and the domestic opposition to it, come to dominate American politics in the 1960s?
asked by carol 
physics
Some special vehicles have spinning disks (flywheels) to store energy while they roll downhill. They use that stored energy to lift themselves uphill later on. Their flywheels have relatively small rotational masses but spin at enormous angular speeds. How
asked by olga 
Physics
How do you solve this problem? A ball on the end of a string is revolved at a uniform rate in a vertical circle radius of 72.0 cm, as shown in figure. If its speed is 4.00m/s and its mass is .300 kg. Calculate the tension in the string when the ball is a)
asked by Emily Grossman 
calculus
Can someone tell me how to do this type of problem? A particle moves along the curve y=sqrt(1+x^3). As it reaches the point (2,3) the y coorindate is increasing at a rate os 4cm/s. How fast is the x coordinate of the point changing at that instant?
asked by Susie 
Physics
How to solve/ work this problem? If a curve with a radius of 88m is perfectly banked for a car traveling 75 km/h, what must be the coefficient of static friction for a car not to skid when traveling at 95km/h?
asked by Emily Grossman 
world history
How did the Renaissance contribute to the Age of Exploration? by emphasizing the importance of converting people to Christianity by awakening a spirit of discovery and innovation in Europe by fostering a belief in the importance of working as a group by
asked by Tom 
statistics
Suppose a basketball player, Player A made 80% of her free throws last season and that she continues to shoot free throws at the same rate. Assume that free throw attempts are independent. Let the random variable X be the number of free throws that player
asked by Alex 
College Algebra
A farmer wants to build a rectangular fence using the side of his barn as one side. He has 200 yards of fencing available. Find the maximum possible area he can enclose with the fence.
asked by Anonymous 
Chemistry
The intravenous dosage of mannitol is 1.5g/kg, administered as a 15% mv solution. How many ml of the solution should be administered to a person with a body mass of 85kg?
asked by Mike 
history
How and why did the American economy soar from 1950 to 1970?
asked by carol 
physics
A transverse wave, frequency 15.0 Hz, travels along a string. Distance between a crest and an adjacent trough is 3.50m. What is its wavelength?
asked by Taira 
math
shad is 3ft from a lamppost that is 12 ft high. shad is 5 1/2 ft tall. how long is shad's shadow?
asked by kourtney 
MathStatistics
It appears that people who are mildly obese are less active than leaner people. One study looked at the average number of minutes per day that people spend standing or walking. Among mildly obese people, minutes of activity varied according to the N(373,
asked by Kerry 
chemistry
A particular kind of emergency breathing apparatusoften placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisonedworks via the following chemical reaction: 4KO2(s)+2CO2(g)> 2K2CO3(s)+3O2(g) Notice
asked by Jake 
PhysicsOptics
A point source of light illuminates an aperture 4.00m away. A 18.0 cm wide bright patch of light appears on a screen 2.00m behind the aperture. I have been trying to use the equation w=(2*wavelength*distance)/aperature width. However, I am not given
asked by Jessica 
Physics
A parallelplate capacitor is constructed from two circular metal plates or radius R. The plates are separated by a distance of 1.2mm. 1. What radius must the plates have if the capacitance of this capacitor is 1.1 uF? 2. If the separation between the
asked by Jon 
physics
A high diver leaves the end of a 5.0 m high diving board and strikes the water 1.4 s later, 2.8 m beyond the end of the board. Considering the diver as a particle, determine the following. (a) her initial velocity, v0 1 m/s 2° 3 (b) the maximum height
asked by Anonymous 
General Chemistry
Methanol is produced as the sole product of the combination of carbon monoxide gas and hydrogen gas. If 3.12X103 kg of methanol are actually produced, what is the precent yield if you start with 430.0 kg of hydrogen gas?
asked by Samm 
science
The following is current scientific evidence supporting the nebular theory on the formation of the solar system.' a the composition of the inner and outer planets, current observations of star formation, and the motion of the solar system b current
asked by Anonymous 
Physics
Please, help me with this problem... im a bit confused abt solving it.. In a tank of volume V=7.5 L, temperature T=300 K, there is a mix gases: n1=0.1 mole of oxygen, n2=0.2 mole of nitrogen, n3=0.3 mole of carbon dioxide. Considering the gases ideal,
asked by Gyuzal 
medicla terminology
what are the benefits and disadvantages of using medical terminology in medical office management?
asked by Anela 
chemistry
A particular kind of emergency breathing apparatusoften placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisonedworks via the following chemical reaction: 4KO2(s)+2CO2(g)> 2K2CO3(s)+3O2(g) Notice
asked by Jake 
calculus
Consider the graph of y2 = x(4 − x)2 (see figure). Find the volumes of the solids that are generated when the loop of this graph is revolved about each of the following
asked by ben 
Physics
1. A 3kg body moving towards the east with a speed of 5 m/s collides with a 2kg ball originally at rest. After the collision the 3kg body moves in a direction of 25 degrees N of E. If the collision is perfectly elastic Find: a) the magnitude and
asked by Sean 
Physics
The two blocks in the figure are connected by a massless rope that passes over a pulley. The pulley is 17 in diameter and has a mass of 1.9 . As the pulley turns, friction at the axle exerts a torque of magnitude 0.40 . If the blocks are released from
asked by Saif sidd 
physics
A book on a shelf 2.0 meters above the floor has a mass of 1.5 kilograms. What is the gravitational potential energy of the book?
asked by Sadie 
Statistics
A sociologist is testing the null hypothesis that the percentage of school superintendents who earn an annual salary of more than $150,000 is greater than or equal to 50%. The sociologist conducts a poll of 1100 randomly selected superintendents and finds
asked by Rina 
Physics
How to solve/work problem? Two objects attract each other gravitationally with a force of 2.5 * 10^10 N when they are .25m apart. Their total mass is 4.0kg. Find their individual masses.
asked by Emily Grossman 
Chemistry
You have a stock solution of 14.4 M NH3. how many mililiters of this solution should you dilute to make 1050mL of .220 M NH3 answer 16.o mL Question if you take a 10.5mL portion of the stock solution and dilute it to a total volume of .600L, what will be
asked by Natalie 
Physics
Use the relationship power = current voltage to find out how much current is drawn by a 1350 watt hair dryer when it operates on 120 volts. Then use Ohm's law to find the resistance of the hair dryer.
asked by John 
AdvertisingHELP
I need an advertisement which hasn't been banned yet, but that you think should be banned. I don't really pay attention to ads, so I don't know which ones should be banned. I actually have to write a complaint letter on one.
asked by Celina 
US History
Why was control of the seas so important for the Allies and the Axis?
asked by Kaylee 
chemistry
How many grams of solid KOH are needed to prepare 100.mL of a 1.7 M solution?
asked by Kelli 
physics
Calculate the impulse that must be imparted to stop a 5.0kg object traveling at 8.0 m/s? If the object came to a stop in 10 s, what is the magnitude of the stopping force?
asked by anonymous 
Chemistry
Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
asked by Joshua 
physics gr 12
A flower pot is dropped from the balconey of an apartment 28.5 metres above the ground. At a time of 1 second after the pot is dropped a ball is thrown vertically downwards from the balconey one story below 26 metres above the ground. The initial velocity
asked by just wondering 
Physics
The gravitational force between two objects is proportional to what
asked by Paige 
chemistry
Combustion analysis of 1.200 gram of an unknown compound containing carbon, hydrogen, and oxygen. What is the empirical formula of the compound?
asked by Anonymous 
Math, Stats
the probability is 0.6 that a person shopping at a certian store will spend less than $20. For group of size 19, find the mean number who spend less then $20.
asked by Olivia 
Geometry
A wheelchair ramp has a rise from the ground of 1 gilt. The ramp has a length of fourteen feet. To the nearest angle the ramp makes the sidewalk
asked by Sam 
Physics
How do you solve this problem? How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of 115,000 g's?
asked by Emily Grossman 
chem
Complete the table below: Answer the following for a body centered unit cell. (Hint: Helpful information can be found by going to the "Lattice" menu, choosing "Cubic", and then choosing "BodyCentered" in the Crystalline Solids program.) Crystalline Solids
asked by brian 
Chemistry
How many mL of a 10.0% by volume stock solution of HCl must be diluted with enough water to make 300.mL of a 1.5% by volume solution?
asked by Kelli 
Calculus for Business students
A hospital performs 3 types of operations. The first type takes 30 minutes, and they charge $700 for it. The second type takes 1 hour, and they charge $1050 for it. The third operation takes 2 hours, and they charge $1400 for it. The hospital can schedule
asked by Sarah 
History
If you could summarize the fighting in the Soviet Union between 1941 and 1944 into one sentence what would you say??
asked by Abby 
Math
A department store is holding a drawing to give free shopping sprees to two lucky customers. There are 15 customers who have entered the drawing: 4 live in the town of Gaston, 6 live in Pike, and 5 live in Wells. In the drawing, the first customer will be
asked by Rachal 
Numerical Analysis
Using the bisection method, Newton’s method, and the secant method, find the largest positive root correct to three decimal places of x3 − 5x + 3 = 0. (All roots are in [−3,+3].)
asked by Roy 
Physics
In the figure below, two blocks are connected over a pulley. The mass of block A is 12 kg, and the coefficient of kinetic friction between A and the incline is 0.22. Angle θ is 30°. Block A slides down the incline at constant speed. What is the mass of
asked by Ben 
Calc
If the substitution u=x^2 + 1 is made, then the integral from 0 to 2 of [(x^3)/(x^2 + 1)]dx = ? Thank you for your help!
asked by Erica 
chemistry
assume the diameer of a neutral helium atom is 1.40 x 10 to the second power pm. suppose that we could line up helium atoms side by side in contact with one another. how many atoms would it take to make the distance from end to end 9.00cm
asked by Anonymous 
physics
Planet A and planet B are in circular orbits around a distant star. Planet A is 8.0 times farther from the star than is planet B .What is the ratio of their speeds ?
asked by cool 
physics
A snowboarder of mass 74.4 kg (including gear and clothing), starting with a speed of 5.0 m/s, slides down a slope at an angle è = 37.1° with the horizontal. The coefficient of kinetic friction is 0.116. What is the net work done on the snowboarder in
asked by Anonymous 
World Geography
Which statements describe the European Union (EU)? 1) Citizens of EU nations can live, work, or study in any member nation. 2) Passports must be presented by citizens when traveling between EU nations. 3) Tariffs between member nations were ended in 1968.
asked by kadi 
physics
Estimate the speed of the parachutist descending at the constant velocity with open parachute. Assume the area of the parachute, A = 30 m^2, mass of a person, m = 100 kg, and density of air, roh = 1 kg/m^3. Enter the answer limited to the second decimal
asked by Anonymous 
Physics
What thrust does a 350 model rocket need in order to have a vertical acceleration of 14.0 on the Earth?
asked by Mike aloe 
math
What is the expanded form for 17,500 mph
asked by Dalida 
math
Having trouble with these pairs of numbers (20,21,29)  (28,45,53) I am supposed to develop a Pythagorean triple. Here is that I am supposed to use which is a formula that can be used to generate infinite number of generating Pythagorean triples is: a =
asked by Dave 
chemistry
how many moles of gas are contained in a 50.0L cylinder at a pressure of 100.0 atm and a pressure of 35 C?
asked by donna 
Physics
"An alpha particle (a helium nucleus) is traveling along the positive xaxis at 1 250 m/s when it enters a cylindrical tube of radius 0.500 m centered on the x axis. Inside the tube is a uniform electric field of 4.50 X 10^4 N/C pointing in the negative y
asked by Anonymous 
math
what fraction of a week is 7 seconds A) 1/24 B)1/1440 C) 1/3600 D) 1/86400
asked by hunter 
Physics
How long will it take a 1080 W motor to lift a 330kg piano to a sixthstory window 16.0m above?
asked by John 
math
The mean radius of the Earth is 6.37 x 106 meters (m). Assuming the earth can be modeled as a perfect sphere a. In cubic meters (m3 ) what is the volume of the Earth? b. In meters (m) what is Earth’s circumference? c. If the mean density is 5.515g/cm3,
asked by Rocio Aguilera 
algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 5x – 7y = 25.5 2x + 10y = 9
asked by Jackster 
physics
A communications satellite is in a synchronous orbit that is 3.00 107 m directly above the equator. The satellite is located midway between Quito, Equador, and Belem, Brazil; two cities almost on the equator that are separated by a distance of 3.10 106 m.
asked by Anonymous 
Precal/Trig
(tan/(1+sec)) + ((1+sec)/tan) = 2csc (Show all work please.)
asked by Katherine 
World cultures
What are the five main regions of Africa? I looked it up but, all of them say south, north, central, west, and east Africa
asked by Valeria 
physics
Micah and Will watched a skater skate at a steady speed around a oval rink.Micah said the skater had no acceleration.Will said that the skater was accelerating.Who is right?Explain your reasoning.Be sure to describe how the skater's motion and velocity
asked by dadelissa 
Chemistry
What mass of Cr(OH)3 would be produced if 500ml of 0.250M KOH were added to a solution of CrCl3. I need to understand how to set this up, not just get the answer. I have the balanced equation figured out.
asked by Angela 
Algebra
The $75 cost for a party was to be shared equally by all of those attending. Since five more people attended than was expected, the price per person dropped by 50 cents. How many people attended the party?
asked by Andrew 
english 101
how do you plan to support this thesis on healthy eating
asked by pat 
Socialogy
a. How can social stratification possibly lead to prejudice and/or discrimination towards others? b. Compare and contrast prejudice and discrimination in at least three different ways. c. How can the three sociological perspectives (i.e., social
asked by Candie 
Art
Hi I have to do an Art analysis on 'Diamond Dust Shoes' by Andy Warhol, and am a bit stuck on the part "what do you think the artist was trying to say?" I am in yr 8, and was wondering if anyone had any suggestions :) Thank you!
asked by Catherine 
physics
the coefficient of restitution between the ball and the floor is 0.60 If the ball is drop from rest at the height of 6.6 m from the floor. Find a) what is the maximum height will the ball attain after the first bounce. b) how much kinetic energy is lost
asked by robert 
english
do you have a section on writing a research paper in mla format
asked by henry 
Geometry7th grade
The diagonals of a rhombus ABCD intersect at point E. If the sides of BC is equal to x + 9 and side DC is equal to 5x2, find x. How would I set this upPlease give me some direction
asked by BethAnne 
MATH
In Jessica's art class, the ratio of girls to boys is 3:2. If there are 25 students in the class, how many more girls are there than boys?
asked by Anonymous 
Algebra 2
I am having trouble with my last two word problems on a homework assignment. For some reason I just can not get word problems and get frusterated. I hope someone can help. Alan was able to rent a moving van for $99 with unlimited mileage or $49 plus .80
asked by Monica 
physical science
If 22 grams of water are saturated at 75 degrees celsius with potassium nitrate and then cooled to 40 degrees celsius, how much will precipitate?
asked by chris 
Chemistry 11
Calculate the number of moles of Carbon in 27.6g C4H9OH.
asked by Lorraine 
literaturehelp me PLEASE?
how does Eudora Welty use dialogue to establish characters and character relationship in A Visit of Charity?
asked by Vivian 
Smartphone Help
This is an assignment in which I have to list down Requirements, advantages, and disadvantages of a smartphone. These are the requirements needed. send and receive phone calls send and receive texts on screen keyboard or physical keyboard can tether a
asked by Anonymous 
chemistry
for our lab, we are given the molarity of ClO. We are then supposed to use beer's law to determine the molarity of the dye that was used to make the solution with. For the dye, use the first absorbance value, Ao, and calculate the initial concentration of
asked by Anonymouse one 
physics
1. A solid copper cylinder hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits sound with a fundamental frequency of 300 Hz. The copper cylinder is then submerged in water so that half
asked by vijay krishna 
Calculus Please Help
Given the numerical values shown for the function f(x), find approximate values for the derivative of f(x) at each of the xvalues given. x= 0 1 2 3 4 5 6 7 8 f(x)= 13 15 16 17 17 14 11 9 7 f'(x)= 2 1 1 1 0 3 3 2 2 What seems to be the greatest rate of
asked by Celine 
math
A cylinder has a diameter of 80 cm and a length of 45 cm. Another cylinder has the same volume but is 80cm long. What is the diameter of the longer cylinder?
asked by priya 
FRENCH
COuld you please tell me if Ive translated these French words and phrases right? Estce qu(e)  Phrase introducing a question Ne Quitte pas  Wait a minute? Maintenant  Now Il y a des defiles et beaucoup de bals: There are some parades and many dances Ce
asked by Joanna 
physical
I hv been try to do but...calcu the GPE of a roller coaster car points B is 5m/C 3,2m nd C 9,8 also D...
asked by Zanele 
statistics
Ms. Kim Mooney in 1989 as part of completing her dissertation at UNH. The dataset was collected to assist in exploring the relationship between the “effect of social stress on blood pressure.” This was investigated by collecting data at six different
asked by Jamar 
geometry
The rectangular label will completely cover the lateral surface of the can using as little paper as possible. If the can has a height of 8 cm and a diameter of 7 cm, then what are the width and length (to the nearest centimeter) of the label?
asked by Emma 
Physics
Three weights are attached to the corners of an equilateral triangle (side length 10 cm) made from stiff but very light wire. Measured from the bottom left corner, what is the center of mass of this object if M1 = 0.1 kg, M2 = 0.2 kg, and M3 = 0.3 kg?
asked by Paige 
Elements of University Composition and Communicati
Each of the following sentences has one grammatical error. The errors are in one of the following four categories: subject–verb agreement, runon sentence, verb form and tense, or sentence fragment. Read each of the sentences and write the type of error
asked by Meaghan 
AdvertisingHELP
I need an advertisement which hasn't been banned yet, but that you think should be banned. I don't really pay attention to ads, so I don't know which ones should be banned. I actually have to write a complaint letter on one. AdvertisingHELP  Kate,
asked by Celina 
Pyschology
what does this mean? psychology is uniquely qualified to help intervene? I also would like you to comment on what are at least two key ways psychology is uniquely qualified to help intervene.
asked by Lee 
Algrebra
How do you write the rule for: y=3x+4 for x=8
asked by Amanda 
Algebra
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. x + 10y = 41 x + 9y = 37
asked by Betty 
Math, Stats
the probability is 0.6 that a person shopping at a certian store will spend less than $20. For group of size 19, find the mean number who spend less then $20.
asked by Olivia 
health
what are 9 parts of the female and male reproductive system that are either exactly the same of similar
asked by Anonymous 
English
I am writing a paper and am wondering what the proper way is to write a sentence from a different language and then to put a translation. For example: My aunt said, "mune pani joveche" (I want water). Would that be the right way to write it?
asked by Skibba 
Physics please help urgent!!
a collision between two pucks on an airhockey table. Puck A has a mass of 0.025 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.060 kg and is initially at rest. The collision is not
asked by Anonymous 
trigonometry
how can i find the antilogarithm of this number. 5.07843058944 it should be 59477.5 can show me how.
asked by anon 
Math
what is 210x=100 ?
asked by Jazmine 
math
Simplify as indicated. State at least one property of multiplication or division that would prove your simplification process correct. a. –(n + 4), to eliminate the parentheses b. 6(s), to eliminate the parentheses c. 8(24 – n), to eliminate the
asked by makenzie 
algebra
You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. Write an inequality that demonstrates how much money you will are willing to spend on the project.
asked by Carly 
Physics
How long will it take a 1080 W motor to lift a 330kg piano to a sixthstory window 16.0m above?
asked by John 
Physics
How long will it take a 1080 W motor to lift a 330kg piano to a sixthstory window 16.0m above?
asked by John 
math
A 4story house of cards requires 24 cards. How many cards are required to build a 98 story house of cards?
asked by john 
ELA
Can you check if this essay has some corrections that need do be fixed: Imagine you're talking on your telephone or even sending an email to your friend and the government is listening to your conversation or what you’ve written to your friends. Does
asked by Sumaiya 
Kinesiology
Assume that a muscle is having a force of 300N is pulling at an angle of 75 degrees. What are the components of the force both the trigonometric method and graphic method.
asked by Jon 
Math
A room is in the shape of a right triangle. The hypotenuse is 8 meters longer than the short leg and the long leg is 4 meters longer than the short leg. Find the length of each side. (ok, now how can it be done if I change each side to cm and km, then ft
asked by Julie 
Math
Penny has been hired to paint 5 bulletin boards at her school. To calculate the amount of surface she needs to paint, she multiplies the length of one side of one bulletin board by itself and then multiplies the product by 5. Based on Penny's calculations,
asked by Emelie 
Physics
I'm trying to help my 7th grader with homework and I don't know this stuff. How do you figure word problems based on newton's 2nd law. one problem is: What is the acceleration of a ball if a force of 20N is applied to the 8kg ball?
asked by Denise 
econ
Suppose Jean Splicer, an investor, buys $100,000 of shares of stock in a diversified bundle of Biotech firms and exactly one year later sells those shares for $108,000. If the value of the CPI at the date of Jean's purchase was 160, and rose by the sale
asked by john 
Math Trivia
1) A school has 1 closed lockers. Larry comes into the school and "toggles" every second locker, then Fred toggles every 3rd, Bob every 4th, etc, up to Zoe who toggles every 100th locker. After all this"toggling" how many lockers are open? 2) If you take
asked by Josh 
Science
What type of plate boundary is located at the Juan de !@#$%^&a plate and Washington state on the north American plate?
asked by Bob 
math
Write and solve the number sentences she could use. Ms. Cloudcover, the TV weatherperson, noted that Sunday’s temperature was 12, much warmer than the 7 on Friday and the 2 on Saturday. She remembered that Thursday’s temperature was 0 and checked to
asked by Anonymous 
Physics
Please help ~ Two blocks are arranged at the ends of a massless string as 3.21 kg (box hanging from table) 4.96 kg (box on table). The system starts from rest. When the 3.21 kg mass has fallen through 0.4 m, its downward speed is 1.27 m/s. The acceleration
asked by CR 
Chemistry
Ni+2 + SCN Ni(SCN)+ A reaction flask initially contains .0006 Ni+2 and .00002 M SCN. AFter equilibrium is reached, it is found that the concentration of Ni(SCN)+ is 6.0x10^6 M. Complete an ICE box table.
asked by kappie 
Cost acconting
(underapplied or overapplied overhead) At the end of 2010, jackson tank company's accounts showed a 66,000 credit balance in Manufacturing Overhead control. In addition, the company ahd the following account balances: Work in process inventory 384,000
asked by Anonymous 
Physics
A 100.0 W light bulb hangs from the ceiling. What is the visible light intensity on the floor, 2.1 m directly below the bulb, if 10% of its output is visible light? So I am attempting to use: I= Power/area however, I don't have a radius. I know 10% of 100
asked by Lynn 
Chemistryhelp needed
Can we use an ACS/AR grade chemical for UV spectrophotometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?
asked by candy 
physics
A 10kg duffle bag is undergoing a vertical acceleration of 0.65 m/s2 (positive for up, negative for down), while its owner is holding it with an upward force. What is the magnitude of this force?
asked by sabeen 
trigonometry (MathMate)
MathMate i would really appreciate if you can show me where the logarithms can be used.I know they are unnecessary and I already found the answer without them but i still have to show my work using logarithms and they just confuse me. I also have most
asked by anon 
calculus
equation of the tangent line to the curve y = 2x²x+10 at the point (1,13)
asked by Anonymous 
Math
Ues the Gaussian elimination to find complete solution to the equation or show that none exist 5x+12y+z=10 2x+5y+2z=1 x+2y+3z=5
asked by Tonya 
Science
A liquid has a volume of 100mL. It is placed into a different container and its volume is 1L. What can you conclude about how this liquid changed?Explain.
asked by Callie 
trigo
in a right triangle XYZ where right angle at angle X, if z= 14 and angle Y = 27.7 degree. Find angle Z, side x and side y.
asked by sheosono 
geometry
Two cyclists set off at the same time from a point o .Cyclist p head east with a velocity of 20km/hr. Cyclist Q heads with a velocity of 16km/h .After 45 min they both stop calculate a) the distance they have each travelled in 45 min . b) the distance ox
asked by reshma 
math
Calculate the answers 377 Does n+m = n+m for all integers na and m? If so, give some examples. If not, give a counterexample. The Weathertalk Analysis Problem. Read the following story about the TV weatherperson and identify as many places as
asked by bubba 
math
Write the integer that is represented by a point midway between 76 and 76 on the number line. Choose a nonzero integer for n to show that –n can be evaluated as a positive number. Scoring in Golf. A golfer played 8 rounds on a tournament course with the
asked by Anonymous 
Math
What is a reasonable estimate of the perimeter of the base that is a square with all 4 sides 143.5 meters,
asked by Hannah 
Physics
A 5 kg block is attached via a rope to a dangle 2kg mass. Consider the case without friction. What angle would the ramp be for the 5kg block to experience zero acceleration?
asked by Paige 
math
What is the area of a circle with d=22?
asked by Teresa 
calculus
y = log7(x^2  6x  2) this is base seven is the answer 2x6/(x^26x2)
asked by jessica 
Geography check
The Zambezi River runs through the easternmost part of this country...is it Zambia?
asked by Alyonka 
Math
how many positive threedigit numbers are there that have no digits repeating?
asked by Sid 
algebra
Write the equation in y=mx+b form. Find the equation of the line that passes through the points (8,15) and (2,5) I am unable to get this answer!
asked by Jam 
algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + 6y = 3 / 6x + 4y = 10
asked by Jackster 
chemistry
what is 2.5% vapor expressed in parts per million?
asked by Anonymous 
science/chem
Hund's rule states that each orbital in a sublevel will contain one electron before another electron will fill an orbital? Why?
asked by missy 
Sciencemath
Calculate the density of 25 Grams at a volume of 10 millimeters
asked by Naz 
Physics
If the angle of incidence is 30 degrees, what is the angle of reflection?
asked by jack 
Computer class
how do I design a program using a flowchart, the program needs to compute state and county sales tax? It is suppose to compute it once the user enters amount of purchase
asked by Tanya 
English
I really hope you can have a look at my sentences. I forgot to include these last ones. 1)Describe the details of Winston Smith's life as they appear in the opening (?) to George Orwell's 1984? 2) Why can Orwell's 1984 be considered as an antiutopian
asked by Mike 
Planning Your Carrer
Why is it helpful to use "occupational clusters" in thinking about a career?
asked by DestinyLashea 
physics
1) a loaded cart with a mass of 96 kg sits at reat atop a 40 degree inclined plane that measures 20.5m long. accidentally the cart starts so to roll down the inclined plane with a frictional force of 5550N working against it for the intire 20.5m.
asked by shelly 
Physics
A 5 kg block is being pulled to the right with a 20 N force. This causes the block to slide along the table with an acceleration of 2 m/s2. What is the coefficient of kinetic friction between the block and table?
asked by Paige 
Physics
A lower block is being pulled to the right across a wooden table and it is 5kg and the block on top of it weighs 2 Kg. The friction between the table and the lower block is reduces the total acceleration to be 1.5 m/s2. Friction keeps the upper block
asked by Paige 
Physics
A block is sitting on a ramp. The block feels a force of friction sufficient to keep it from sliding down the ramp, which makes an angle of 30 degrees w.r.t. horizontal. What is the minimum coefficient of static friction between the block & ramp?
asked by Paige 
Physics
A 5 kg block is being pulled to the right by a rope which is attached to a dangling 2 kg mass. The coefficient of kinetic friction between the mass & table is 0.1 What is the tension in the rope?
asked by Paige 
maths
Can anyone help with te following please The total volume V(x)cm^3of a container is given by V(x)=4(x+ãx(8x)) (
asked by Claire 
physics
A 3.3 kg brick is falling at a rate of 35.1 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick?
asked by Anonymous 
Math
4a12a = 5+3(2a6)
asked by Anono. 
english 101
review the concept of fallacies and suggest ways to avoid fallacies in your expository essay on healthy eating.
asked by sarah 
Math
Suppose that the number of bacteria in a certain population increases according to an exponential growth model. A sample of 2600 bacteria selected from this population reached the size of 2873 bacteria in two and a half hours. Find the continuous growth
asked by Rachal 
pre algebra
how do you solve 10(2x+1)=19(x+1)
asked by Amber shall 
Math
14x=8x+42
asked by Anono. 
Kinesiology
Assume that a muscle is having a force of 300N is pulling at an angle of 75 degrees. What are the components of the force both the trigonometric method and graphic method.
asked by Jon 
science
what is a dependent varible
asked by Anonymous 
Calculus
find the derivative of 4x(lnx+ln9)9x+e
asked by Sophie 
algabra
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard from, as^2+bx+c=0 the solutions are (3,1)
asked by Mary 
abnormal psychology
Rani is a member of a tribe of Indians in the rain forest of south america.The tribe's witch doctor believes that Rani is possessed by the spirit of a demon wolf and in order to be cured he must undergo an exorcism.Which type of explanation of
asked by vedrana 
chemistry
Calculate the pH in a 0.00500 solution of NaOH.
asked by JC 
physics
A physics professor lifts her 8.2kg briefcase at constant speed with an upward force. Find the magnitude of her force. answer in newtons.
asked by khan 
Chemistry
For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?
asked by JC 
business
4. List at least three steps that makeup a workable plan and explain why each is important.
asked by candy 
Math
4a12a = 5+3(2a6) AND 3(10+4y) = 6+6y
asked by Anono. 
Calc
Let f(x) = x^3  7x^2 + 25x  39 and let g be the inverse function of f. What is the value of g'(0)?
asked by Erica 
algebra 2
A electrician charges $50 for the first halfhour of work and $30 each hour for additional time. Stoney Point High School budgeted $200 to repair the refrigeration system. What length of service call with the budget not be exceeded?
asked by Monica 
physics
1.A stone fired straight upwards from the top a 50m high bridge fall into water below it 12seconds later.what was its initial velocity? how high above the bridge did it go?
asked by Hope katanga 
physics
thanks for solving my question pasted on dated 18.02.2011 at 10.20.pm.2nd question. a wt lifter lifts a wt of one kg against force of gravity through a distance of .8 mtr. how much cals he will burnt from the food he had taken.
asked by ajmer singh sidhu ludhiana 
GEOMETRY
The present height of the pyramid of Khafre in Egypt is 137m.An engineer surveying pyramid measures an angle of elevation of 33degrees from a point X to the top of the pyramid. Calculate the distance from X to the cenre of the base of the pyramid at Y
asked by reshma 
English
Can you please check if these sentences are possible? Thank you. 1) Refer then to the episodes which lead to the abolition of slavery. 2)Lord Henry is a symbol of hedonistic and decadent upper classes, despising the Victorian virtues of work and morals,
asked by Mike 
math
Simplify as indicated. State at least one property of multiplication or division that would prove your simplification process correct. a. –(n + 4), to eliminate the parentheses b. 6(s), to eliminate the parentheses c. 8(24 – n), to eliminate the
asked by makenzie 
art
Explore the daguerreotype process at The Metropolitan Museum of Art website: In your opinion, what is the most significant difference between the daguerreotype process and modern photography? How do early and modern photos differ in the creative process of
asked by bubba 
math
if today is tuesday and i first bent over backwords 563 days ago, then on which day did I first bend over backwords? sat,wed, tues or friday?
asked by hunter 
abnormal psychology
Which one of the following is an essential feature of the impulsecontrol disorders? A)Ability to control the impulse B)Pride after committing the impulsive act C)Sense of calm prior to committing the act D)Pleasure after acting on the impulse Is D correct
asked by vedrana 
French
If you're writing a sentence in French with two verbs, the first being l'imparfait, would the second one be in the infinitive? For example "Le peuple prehistoriques était intelligente parce que ils pouvaient ériger les monuments sans des machines" ? Is
asked by Gabrielle 
Life orientation
Identify 5 practices in contravention of the basic conditions of employment act?
asked by Robert 
US History
Glorification of war in theory would be that it can change society, and make people better. but what would it be in Practice:??
asked by Holly J. 
English
I included only 4 sentences for you to check. Thank you. 1) Refer then to the episodes which lead to the abolition of slavery. 2) He provides us with several epigrams –short and clever amusing sentences – which express his idea in a clever and amusing
asked by Mike 
trig
Suppose that q is in standard position and the given point is on the terminal side of q. Give the exact value of the indicated trig function for q.
asked by Anonymous 
Cuban culture
I tried googling this and I can't find anything. What makes Batidos (Cuban milkshake) special in Cuba?
asked by Lala 
intermediate algebra
Select the set of equations that represents the following situation: Mike invested $706 for one year. He invested part of it at 5% and the rest at 3%. At the end of the year he earned $28.00 in interest. How much did Mike invest at each rate of interest?
asked by joel 
algebra
addition method:3x5y=2 and 5y2x=2 how would I solve it since they are not together?
asked by m 
Algebra 1
Two lines L1 and L2, are perpendicular. The equation of L1 is 3xy=2. L2 passes through (5, 1)
asked by Jocelyne 
math
What is the area of each circle? 1. d = 42 2. d = 17
asked by Teresa 
statistics
57, 61, 57, 57, 58, 57, 61 What is the mean My answer 408/7=58.285=58.286 answer is 58.286
asked by Debbie 
Geoscience
can you help me write out a geological time scale of an area located within stone mountain Georgia? I need a description of the area, how the rock transformed and was dated, picture of a map that has the longitude and latitude of the area picked, the
asked by Robin 
abnormal psychology
Rani is a member of a tribe of Indians in the rain forest of south america.The tribe's witch doctor believes that Rani is possessed by the spirit of a demon wolf and in order to be cured he must undergo an exorcism.Which type of explanation of
asked by vedrana 
physics
When your car is moving at 3.33 m/s and car has a mass of 860 kg, how much translational kinetic energy does it have?
asked by olga 
math
5000 to the power of 5
asked by super 
Anthropology
Why is there a conflict between evolutionists and creationists?
asked by Alex L. 
Social studies
Pro and Cons b/w a principal and the president
asked by Gloria 
Physics
A car travels around a circular track (4 km diameter). Its tires have frictional coefficients: mS = 0.3 & mK = 0.2. If the track is flat, how fast can the car travel around the track and still maintain control?
asked by Paige 
Physics
The gravitational constant for Earth is gE = 9.8m/s2. The gravitational constant for the planet Mongo is 20 m/s2. If an object has a mass of 10 kg on earth, what is its mass on Mongo?
asked by Paige 
Physics
The gravitational constant for Earth is gE = 9.8m/s2. The gravitational constant for the planet Mongo is 20 m/s2. If an object has a weight of 10 lbs on earth, what is its weight on Mongo?
asked by Paige 
precalculus
Hi does anyone know how to solve this equation into parabola form? thanks x^2 + 2xy +3y^2 = 9
asked by jane 
Math
4a12a = 5+3(2a6)
asked by Anono. 
heart
how long does it take to design, test, and get FDA approval of an artificial heart valve?
asked by Allie 
pre algebra
how do you solve 10(2x+1)=19(x+1)
asked by Amber shall 
pre algebra
how do you solve 10(2x+1)=19(x+1)
asked by Amber shall 
English
I need to know which alternatives (?) sound best. Thank you. 1) Describe what living and working conditions for slaves in 19th century America were like. Refer then to when slave trade was banned from US (or the United States or America). 2)Describe the
asked by Mike 
physics
A boy travels in a boat at angle of 30 degrees to the river bank.if he travels 250m before reaching the opposite,calculate the width of the river
asked by Matika 
Math
14x=8x+42
asked by Anono. 
english
Please explain usage of " ATLEAST "in degrees of comparision.
asked by soumya 
Stats
If the true population standard deviation was known to be 3, then approximately what minimum sample size would you need in an SRS (simple random sample) if you want a confidence interval for the margin of error of .5 or less?
asked by Anonymous 
precalc
If is vector a ia 7 units long, the magnitude of vector b is 10 units and the cosine of the angle between the two vectors is 0.3 when they are placed tailtotail, what does the inner product of vector a and vector b equal?
asked by anna 
algebra
The final grade for a particular course is calculated by dividing total points earned by total points available. There are 120 points available in the first half of the course, and 140 points in the second half of the course. If a student earns 81% in the
asked by peg 
physics
A string is tightly stretched between the point AG at point C it's lightly pinch and point B it's plucked, at points DEF are light folded tissue paper the segments A to BB to CC to DD to E and EG are all equal in length, what happen to the tissue paper
asked by Catherine 
Math SOmeone please please help
Find the derivative of the function. g(u) = (5+u^2)^5(39u^2)^8 Could someone please explain the steps that would lead me to the answer? I'm completely stuck.
asked by Anonymous 
math
gcf of 8/2
asked by samria 
trigonometry
1. Finde the area of the following tringles: (use Logarithms) A) a=12.7, b=21.5, c=28.6. i'm not of the answer i got. i got 127.6 if you got something different can you show me how you did while using logarithms.
asked by anon 
physics
to find velocity v? c=3*10^8 0.99=(1v^2/c^2)^1/2
asked by vera 
economics
where can I find current gross domestic product percentages to consumption, investment, defense and foreign trade for Germany & Switzerland for the past five years so I may analyze the info
asked by Eileen 
English
It contains 15% sulphates and 30% chlorides. Is this sentence grammatically correct?
asked by Abirami 
Calc
If n is a positive integer, find the limit as n approaches +∞ of 1/n(sin (π/n) + sin (2π)/n + ... + sin (nπ)/n)
asked by Erica 
Reading
I didn't read a book for reading and i need to do a clue map stating the clue and what suspect it lead to.. help! the book is Nancy Drew and the Mystery of the Glowing Eye.
asked by Sam 
geometry
if ac = 2x + 13 and db =4x  1, what is db
asked by Steven 
Networking
I need to design a fully switched network for a 3story retail building. Management on second floor (36 workstations), Sales on the 1st floor (20 workstations) and warehouse in the basement (35 workstations). My SOW and Network diagrams must consist of the
asked by Trish 
math please help
multiplying a number by 6/4 is the same as dividing it by? is it 3/2 or 4/3
asked by hunter 
Math
To find out hw much inches are in 9.5 feet, do I do 12 times 9.5? I would do that because there is 12 in. in a foot.
asked by Julia 
french
ok my assignment is find a french music video and put speach bubbles in the video and also explain the meaning of the video. ok my music video is "Juste Une Photo de Toi" and i got the speech bubbles working but i don't know what the video mean. here what
asked by neeedhelpp 
Science
Ok, so I'm doing a project on the Earth's layers, and I just have a question on the model. DOES IT HAVE TO BE 3D? If it is, I'm dead meat.
asked by Catherine 
English
I urgently need you to check these sentences. Thank you. 1) Describe what living and working conditions for slaves in 19th century (after 1810) America were like. Refer then to when slave trade was banned from US. 2) The vast majority of African Americans
asked by Mike 
Math
If the sides of a triangle are x, x+5, 2x+5. For what values of "x" would the triangle have a perimeter of at least 72?
asked by Janelle 
Elementary Statistics
WHAT ARE THE BOUNDARIES OF 77.5 OUNCES?
asked by Tee 
psychology
explain the relationship between learning and memory.
asked by tanya bush 
math
What is the area for each circle? 1. d = 22mm 2. d = 17m
asked by Teresa 
Biology
Can Someone please trace a molecule of O2 in extreme detail from the air to the a muscle cell in the left calf?
asked by Anonymus 
grammar
What is the adverb in the sentence I finally finished the report
asked by Anonymous 
math
2/x+3 = o solve for x. Is this where I go: 2= 0 x+3=0?
asked by Jam 
SmartPhone Help
Blackberry torch 9800: Present three alternative choices from three different carriers and three different manufacturers. All must have the requirements listed below. Phone Name/Carrier Blackberry Torch 9800(I have no idea what is meant by Carrier) These
asked by Anonymous 
science
what is an explanation for the relationship between currents and the brightness of a light bulb??
asked by andy 
chemistry
write a balanced equation between sodium and water. if 1.2g of sodium reacted with water, calcul;ate the volume of gas produced at s.t.p. how many molecules of the gas are produced at s.t.p.
asked by danny boay 
calculus
Are y=log(x+1) and y=10^x1 symmetric about the line y = x ?
asked by Lynn 
phy
It is a lab question. For a standard stove top element, theoretically determine how long it will take to cool down toroom temperature from the high setting. Compare to experimental values. We have to used conduction, radition and convection
asked by ami 
Sciencemath
Calculate the density of 25 Grams at a volume of 10 millimeters
asked by Naz 
science/chem
Why do the d and f block elements have only 2 valence electrons?
asked by missy 
Sciencemath
Calculate the density of 25 Grams at a volume of 10 millimeters
asked by Naz 
math
Does anyone know how can I apply the Pythagorean Theorem to real world situations.
asked by Dave 
English
Finsh the sentence. The teenager spoke with the URBANE refinement of a person who..
asked by Taylor 
com 150
pick out 3 professions or wellknown companies that would highly benefit from having a employee who is well trained in the art of expository writing.
asked by celena 
United States 1700s
How did the colonists across colonial boundaries become more aware of and interconnected with each other during this period 17001776? kind of like which events of closeness lead to the declaration of independence?
asked by mike 
math
Francisco has $2000. He invested part at 7% and the rest at 12%. If his annual return was $215, how much did he invest at each rate?
asked by Jessica 
Advertising
Is there any advertisment which you think should be banned?
asked by Celina 
English  Native speakers
I got a little confuse by possessive s The rule goes that all regular plurals get the ending s' f.e. my parents' house So then it is my brother's house in singular and my brothers' house in plural?
asked by tee 
spanish
congigating esta
asked by Anonymous