Questions Asked on
June 28, 2012

physics
A 4.50kg wheel that is 34.5 cm in diameter rotates through an angle of 13.8 rad as it slows down uniformly from 22.0 rad/s to 13.5 rad/s. What is the magnitude of the angular acceleration of the wheel? A) 0.616 rad/s 2 B) 22.5 rad/s 2 C) 5.45 rad/s 2 D)
asked by help me!!! 
calculus
solution for limit as delta x approaches 0 (1cos4x/1cos2x)
asked by Anonymous 
Chem!
10 grams of argon and 20.0 g of the neon are placed in a 1200.0 ml container at 25 degrees C. The partial pressure of neon is?
asked by Harlem 
chem
would you expect the nonbonding electron pair domain in nh3 to be greater or less in size than for the corresponding one in PH3?
asked by skye 
trig
A certain species of tree grows an average of 0.5 cm per week. Write an equation for the sequence that represents the weekly height of this tree in centimeters if the measurements begin when the tree is 800 centimeters tall?
asked by mia 
science
prove that the maximum horizontal range is 4 times the maximum height attained by a projectile which is fired long the required oblique direction
asked by nt52 
algebra
Bob had three 10' lengths of conduit. If he used a total of 13.75' of conduit to install a motor, how much total conduit does he have left?
asked by tim 
alg
An amplifier has an input power of 5 mW. The output power is 100 mW. What is the decibel gain to the nearest decibel?
asked by Erica 
algebra
An amplifier has a 50 watt output and a 5 watt input. What is the gain in decibels for this amplifier, rounded to the nearest decibel?
asked by Grand 
statistics
Acrylic bone cement is commonly used in total joint replacement to secure the artificial joint. Data on the force (measured in Newtons, N) required to break a cement bond was determined under two different temperature conditions and in two different
asked by aisha 
algbra
If fuses cost $2.35 each, and each motor requires 3 fuses, how many motors can be supplied with $493.50 worth of fuses?
asked by MIKE 
Physics
An air traffic controller observes two airplanes approaching the airport. The displacement from the control tower to plane 1 is given by the vector A , which has a magnitude of 220 km and points in a direction 32 degrees north of west. The displacement
asked by Hiral 
Physics
Standing on the surface of a small spherical moon whose radius is 6.30 104 m and whose mass is 8.00 1018 kg, an astronaut throws a rock of mass 2.02 kg straight upward with an initial speed 42.2 m/s. (This moon is too small to have an atmosphere.) What
asked by James 
offices finances
Who usually signs a collections letter? A. A law enforcement officer B. A lawyer C. The office professional D. the executive I believed that is C the correct answer but not sure pleased can someone help me thank you
asked by ilias 
Physics
An offroader explores the open desert in her Hummer. First she drives 25 degrees west of north with a speed of 7.0 km/h for 15 minutes, then due east with a speed of 11 km/h for 7.5 minutes. She completes the final leg of her trip in 22 minutes.What is
asked by Hiral 
algebra 2
Lisa Chen invested $24,000, part at 8% and the rest at 7.2%. How much did she invest at each rate if her income from the 8% investment is two thirds that of the 7.2% investment?
asked by Anonymous 
statistics
The diameter of small Nerf balls manufactured at a factory in China is expected to be approximately normally distributed with a mean of 5.2 inches and a standard deviation of .08 inch. Suppose a random sample of 20 balls is selected. Find the interval that
asked by Josh 
Algebra
If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph? I understand that d = sqrt[300^2 + 400^2] d = sqrt[250,000] But im not
asked by Becky 
science
two bombs of 20 kg and 30 kg are thrown from a cannon with the same velocity in the same direction .which bomb will reach the ground first ?explain
asked by nt53 
geometry
half of a liter is equal to 16.91 ounces. How many ounces are there in 3 liters? help, Please
asked by Priscila 
Real Estate Financing
"Mr. Smith acquired a property consisting of one acre of land and a twostory building five years ago for $100,000. He also obtained an $80,000 mortgage loan from ACE Bank to provide financing to complete the purchase. This year, Mr. Smith constructed
asked by Tianna 
statistics
Breast feeding sometimes results in a temporary loss of bone mass as calcium is depleted in the mother's body to provide for milk production. An investigation gave the following data on total body bone mineral content (g) for a sample of mothers both
asked by tanya 
chemistry
Hvap 40.65 kJ/mol Hf 285.83 kJ/mol Hfusion 6.03 kJ/mol specific heat 4.186 J/gC molar mass 18.02 g How much energy is consumed by thawing 4.3 g ice?
asked by martin 
CRITICAL THINKING
Please post a substantive response to the following discussion questions by clicking on Reply: Aristotle developed a theory of persuasion by which there are three ways a speaker can persuade an audience. Ethos is the idea that an audience can be persuaded
asked by WILL 
math
Given a dilation with the origin O (0, 0), by observation determine the scale factor "k." DO,K = (6, 12) (3, 6) What is the scale factor K = a0 Is the dilation an expansion or contraction? a1
asked by jen 
chemistry
the volume at s.t.p. occupied by a gas q originally occupying 153.7 cc at 287 k and 750mm pressure, vapour pressure of gas q at 287k is 12 mm of hg
asked by Mayank Goswami 
prealgbra
identify the number as rational or irrational. explain 291.87
asked by sandra 
alGebra
A constant tone is being applied to a speaker. The voltage across the speaker is 5 volts. The voltage across the speaker is increased to 15 volts in order to increase the sound level. What is the decibel gain, rounded to the nearest decibel?
asked by lucy 
Physics
A jogger is running around a circular track of circumference 480 m. If the jogger has a speed of 11 km/h, what is the magnitude of the centripetal acceleration of the jogger?
asked by Sierra 
chemistry
In the macy's thanksgivingday parade, 2000, there was a new float, the cheerios'bee, buzbee. the jar of honey it was holding contained 36,763L of helium. the honey jar was 1/10 of the body size. What is the volume of the entire float?
asked by Leslie 
algebra
Mike's family wants to build a rectangular fenced backyard area for their dog. They have a 20meter length of wire fence and four posts. They can also use the 20meter straight length of the back of their house as a side of the enclosure, but the fence
asked by km 
physics
an object falls from a plane flying horizontally at an altitude of 40,000 ft at 500 mi/h. How long will it take to hit the ground?
asked by wen 
prealgbra
is the sequence 3,12,36 a geometric sequence?explain
asked by shania 
ALGEBRA
If an electronic circuit experiences a loss of 3 decibels with an input power of 6 watts, what would its output power be, to the nearest watt?
asked by Markie 
science
a particle travels in a straight line ,such that for a short time 2s
asked by bk4 
Physics
Vector points in the positive x direction and has a magnitude of 75m . The vector C=A+B points in the positive y direction and has a magnitude of 95m . Sketch A, B, and C with tails at dot.Find the direction of the vector B
asked by Hiral 
statistics
In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77, 67, 66. What are the inner fences?
asked by Josh 
child day care management
Which of the following is the primary function of certification? A. To enforce mandatory government regulations B. To give credit to a facility that meets certain professional standards C. To grant a credential to an individual as an authorization to teach
asked by Anonymous 
KSU
At 3 P.M, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast is the distance between the ships changing at 7 P.M.? (Round your answer to one decimal place.)
asked by Ali 
statistics
The weight of a product is normally distributed with a mean of 4 ounces and a variance of .25 "sq ounces." The company wants to classify the unit as a scrap in a maximum of 1% of the units if the weight is below a desired value. Determine the desired
asked by Isabella 
Chemistry
3.30 mL of vinegar needs 40.0 mL of 0.150M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10 qt sample of this vinegar?
asked by Aaron 
Chemistry
Nitrogen Oxides, NOx (mixture of NO and NO2). The NOx in the atmosphere is slowly broken down to N2 and O2 in a firstorder reaction. The average halflife of NOx in the smokestack emissions in a large city during daylight is 3.9 hours. (a) Starting with
asked by Robert 
Chemistry 2
Chlorine atoms contribute to the destruction of the earth's ozone layer by the following sequence of reactions: Cl + O3 > ClO + O2 ClO + O > Cl + O2 Where the O atoms in the second step come from the decomposition of ozone by sunlight: O3 > O + O2
asked by Robert 
Physics
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object
asked by Anna 
Math
If a dog can run 10ft in1/5 of a second how many feet can it run in 20 seconds
asked by Sarah 
calculus
All right, sorta hard to explain but I will try my best. I am suppose to find the equation for the that lines that are tangent to the curve y=cot^2(x) at the point (pie/4, 1)....(the x is not to the power of 2, a variable right next to the cot^2) I am not
asked by hiii 
organizational behavior
RESEARCH ON SATISFACTION, EMOTIONS, AND TEAM PROCESSES FOUND IN OB DRAWS HEAVILY FROM STUDIES IN:
asked by Anonymous 
statistics
A particular report included the following table classifying 711 fatal bicycle accidents according to time of day the accident occurred. Time of Day Number of Accidents Midnight to 3 a.m. 38 3 a.m. to 6 a.m. 29 6 a.m. to 9 a.m. 64 9 a.m. to Noon 78 Noon to
asked by annie 
chemistry
0.44 gram of a colorless oxide of nitrogen occurs 224 ml at stp. write the molecular formula of the compound
asked by arindam roy 
science
two equal forces have their resultant equal to either.what is the inclination between them?
asked by nt531 
chemistry
How many molecules are in 15.6 g NO2? Answer in units of molecules
asked by Real 
prealgbra
brandon needs $480 to buy a tv and stereo system for his room.He received $60 in cash for birthday presents. he plans to save $30 per week from his parttime job.to find how many weeks w it take to have $480, solve 60+30w=480
asked by janet 
physics
A 4.7 g bullet is fired horizontally into a 0.50 kg block of wood resting on a frictionless table. The block, which is attached to a horizontal spring, retains the bullet and moves forward, compressing the spring. The blockspring system goes into SHM with
asked by Tom 
ECONOMICS
According to the principles of a market, when the price of a hot pretzel is $2.50, how many pretzels are sold Price of a Hot pretzel:$2.50 Quantity demanded:125 Quantity supplied:300 A) 250 B) 200 C) 150 D) 125 E) 50 Would it be D? since that's how much
asked by Booker Perry 
prealgbra
is a triangle with sides of length 6ft,21ft,23ft a right triangle.? explain
asked by shania 
chemistry
how many grams of H2O will be produced if 32.0 grams N2O are produced in the reaction ?
asked by morgan 
Algebra 1 (Scientific Notation)
How will you write this in scientific notation? if you do not mind explaining how you did it. Thank you! $15,789,000,000,000
asked by *Please Help* 
Algebra 2
What simple interest rate will Susan need to secure to make $2,500 in interest on a $10,000 principal over 5 years? how would i figure this out?
asked by Anonymous 
Physics
When two identical ions are separated by a distance of 5.9 multiplied by 1010 m, the electrostatic force each exerts on the other is 6.0 multiplied by 109 N. How many electrons are missing from each ion?
asked by Alex 
science
a 6.85ohm light bulb is connected to a 12.0v battery. how much current flows through the bulb. how much power bulb consume
asked by lora 
prealgbra
is the sequence 5,9,15 an airthmetic sequence?explain
asked by sandra 
science
which is the pah followed by a javelin projected horizontally by an athlete?
asked by nt5 
chemistry
Hvap 40.65 kJ/mol Hf 285.83 kJ/mol Hfusion 6.03 kJ/mol specific heat 4.186 J/gC molar mass 18.02 g How much energy is consumed by thawing 4.3 g ice?
asked by martin 
algerabra 1
how do you find the equation for the line containg the side opposite the side containg the first two vertices?
asked by bridget 
physics
A comet orbits the Sun with a period of 72.8 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.55 AU from the Sun at perihelion, what is its
asked by Tim 
algerabra 1
how do you find the equation for the line containg the side opposite the side containg the first two vertices?
asked by bridget 
physics
a 70kg man climbs a mountain 1200 m high (measured from the base) in 4 h and uses 9.8 kcal/min. calculate his power consumption in watts. what is his power output in useful work? what was the efficiency of this man during the climb?
asked by Anonymous 
Math
if $15,000 is invested at 6%, compounded quarterly, how long will it be before it grows to $25,000?
asked by tania 
Engineering Science
A bullet with a mass of 28g and travelling at 300m\s strikes a body with a mass of 14kg and which can move freely. The bullet remains in the body. At What velocity will the body start to move?
asked by Jan Vosloo 
physics
if i travel in a bus which have 40km/hour speed than i through a coin in vertical hight. Does the coin fall in my hand
asked by dc 
chemistry
An experiment is set up in which a copper surface is irradiated with highintensity photons with a wavelength of 15.0nm. Electrons ejected from the surface are found to have a velocity of .548% of c. What is the binding energy of copper's most weakly bound
asked by Anonymous 
bashyam
For the circuit shown in the figure, letε=14 V. Initially the switch is open and the capacitor is uncharged. When the switch is closed, there is an initial instantaneous current of 1.00 mA in the resistor. Two seconds later the current through the
asked by fdbb 
Finance
a company is offering the US Government's 8.5% 2020 treasury bond for "150.266" . What is the price in dollars of the bond?
asked by Kiki 
prealgbra
charlie is at a small airfied watch for the approach of a a small plane with engine trouble. he sees the plane at an angle of elvation of 32. at the same time, the pilot radios charlie and reports the planes altitude is 1,700 feet. Charlies eyes are 5.2
asked by shania 
Writing/BME
Strength is defined as the amount of stress a material can withstand before fracturing. Therefore, the more strength a material has, the more durable it is. Thus, a toric lens should be constructed from a material with high strength. Every time I read this
asked by James 
Math: profits and costs
Anne and Carol conducted a cooking class. They collected $375 from the participants as registration fees. They used $180 of this money to pay for rental of the kitchen. Carol took the remainder of $195 and $205 of her own money for Anne to buy food. Anne
asked by edtan 
finance
BBA307: Finance Exercise 8A Assignment 8.1 Assignment 8.1: Capital Budgeting Application You have just graduated and one of your favorite courses was Financial Management. While you were in school, your grandfather died and left you $1 million. You have
asked by nancy 
calculus
(SIN^8X5 SIN^5X+SINX)COSX DX I need the answer to this, because I have tried so many times and cannot figure it out.
asked by Anna 
calculas
Find the volume of the solid that is obtained when the region under the curve y=©ø¡îx+3 over the interval [5, 24] is revolved about xaxis.
asked by raza 
Statistics
what drawback of the standard deviation is illustrated by example?
asked by Lu 
Trigo
Two men travelling in opposite directions at the rate 18 and 22 miles per hour respectively started at the same time from the same place. In how many hours will they be 250 miles apart?
asked by Alice 
Science
1. What are some of the evidence that led Wegener to propose his theory, why it met with hostility and why the theory was revived in the 1950’s?
asked by Maria 
Algebra 1 (exponents)
(6p)^2 how will I write this in positive answer? I got 1 p ^2 136 Please help! thank you
asked by Lizzy 
algebra1
factor: 4x^824x^7+12x^6
asked by kathy 
sequence math
Find the sum of the first 27 terms of the following sequence: 10, 18, 26 . . .
asked by elito 
science
derive the expression for time of flight maximum height & range when a body is projected at an angle thita frommthe vertical position with a proper diagram.
asked by tanushree 
American Government
I am having trouble finding anything on this in my book Please help. A ______ is someone who is not in the military.
asked by Wayne 
history
(1) What was the main goal of the Hasburg Empire during world war 1? (2) Why weren't the San Humters of southern africa overwhelmed during the 1900's? (3)what was an important soical development during the 1870's in japan
asked by Paulette 
Finance 370
What are some other applications where WACC (weighted average cost of capital) would be useful?
asked by anita 
California History
What's a good website that i can read about the Chinese immigrant labor during the railroad era? & whats one way i can start the first sentence on a one page report? Thank You
asked by Kathy 
statistics
how large a sample size is needed for 2 sided 95% confidence interval to have a length of 2 weeks when mean is 3.6
asked by jo 
maths
solve the following 3x = 18
asked by jaimin 
Algebra
What is the area of a circle with radius a^2  b^3 + c^2 centimeters. Express your answer in term of "pi".
asked by Anonymous 
Math
Jim can fill a pool in 30 min, sue can do it in 45 min, Tony can do it in 90min, how long would it take all three to fill the pool together? How would i figure this out?
asked by Anonymous 
Algebra 116
in 2000, In a country A, the average family net worth was &270,000, and there were about 6.3 x 10^7 families. Calculate the total family net worth in Country A in 2000. What is the Country A's total family net worth ?
asked by Kinah (Please Help) 
math
Write the equation of the line that passes through the points (4, 7) and (3, 7). Show all your work for credit.
asked by angelena 
algebra
4 (9r+3) +5(3r+7)=
asked by lora 
psychology
Hello, I have to do a method section for a paper and need to know what I would put down for measurement and procedure section. like an example its on 500 college women and 500 college men participating in a study. thanks
asked by darien 
math
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March
asked by John 
Psychology
Dr.Gillian explained that research has identified over 25,0000genes that are responsible for the genetic information that progresses from generation to ceneration.These genes are:
asked by Sandra 
math
what is the sum between 5 in the ten billions place and 5 in the hundred thousands place?
asked by fiona denice 
Algebra
A dining table is in the form of a square. Its side is 3x  y + 4z. What is its area?
asked by Anonymous 
prealgbra
solve by simulating the problem.you have a 5 question multiple choice test. each question has four chices. you don't know any of the answers. what is the experimental probility that you will guess exactly three out of five question correctly?
asked by sandr 
physical science
a certain amount of water freezes and the resulting weight of the ice is
asked by lora 
american literature
what is the attractive legend about hawthorne?
asked by danny johnsom 
Algebra
(1/2a + 3/4b  1/3c)^2
asked by Anonymous 
MATH Algebra 116
is this correct? multiplying ans writing it my answer in standard form. (2*10^5)*(4*10^3) =8*10^8 =800000000 then my answer should be 8.0 I am correct?
asked by Mia 
English
what literary device helps you develope a religous theme in a poem
asked by Ace 
Algebra 1
can a base be negative at the same time as my exponent? how will you solve this one? 6 ^3
asked by Help 
pre cal
7tan^2(pheta)2=3
asked by Maria 
math
if there are 10 more girls than boys in a club with 60 members, how many are boys?
asked by grace 
math
did you get to see wills performance?
asked by Breanna 
organizational behavior
which of the following is a work hindrance stressro?
asked by Anonymous