Thursday

July 28, 2016
Total # Posts: 327

**Physics**

A proton (mass m = 1.67 10-27 kg) is being accelerated along a straight line at 3.6 1015 m/s2 in a machine. The proton has an initial speed of 2.4 107 m/s and travels 2.8 cm. (a) What is its speed? (b) What is the increase in its kinetic energy?
*February 25, 2013*

**calculus!!!**

Use wolframalpha Saved me.
*February 20, 2013*

**Math**

For some constants A and B, the rate of production, R(t), of oil in a new oil well is modelled R(t)=A+Be^(-t)sin(2πt) where t is the time in years, A is the equilibrium rate, and B is the "variability" coefficient. Find the total amount of oil produces in the ...
*February 20, 2013*

**math**

let x represent one of the shirts and then set up the equation 3x-(3x*.3)=63 because there are 3 shirts and after you find the total of the shirts you would usually subtract the percentage of that total from the total. The equation equals 63 from what was given. then solve 3x...
*February 19, 2013*

**Calculus II**

For some constants A and B, the rate of production, R(t), of oil in a new oil well is modelled R(t)=A+Be^(-t)sin(2πt) where t is the time in years, A is the equilibrium rate, and B is the "variability" coefficient. Find the total amount of oil produces in the ...
*February 19, 2013*

**Physics**

The only two forces acting on a body have magnitudes F1 and F2 and directions that differ by an angle θ. If the resulting acceleration has a magnitude a, what is the mass of the body?
*February 8, 2013*

**Chemistry**

Assuming that the [Potato extract] is .001 M and I am going to make a 10 ml solution and each drop is 1/20th of a mL, how do I calculate the [Potato extract] in each reaction solution, using 20 drops, 15, 10, and 5 drops for each one?
*February 6, 2013*

**Physics**

After flying for 15 min in a wind blowing 42 km/h at an angle of 28° south of east, an airplane pilot is over a town that is 42 km due north of the starting point. What is the speed of the airplane relative to the air?
*February 5, 2013*

**4th grade math**

Thanks to both of you for replying, now it makes sense.
*January 30, 2013*

**4th grade math**

In helping my 4th grade grandson last night with his math, he had problems like this 93 * 18. I asked what the asterisk meant and he said the teacher said to "figure it out"
*January 30, 2013*

**Physics**

For the following three vectors, what is 3C·(2AxB)? A = 2.00ihat + 3.00jhat - 5.00khat B= -3.00ihat + 5.00jhat + 2.00khat C = 9.00ihat - 8.00jhat
*January 29, 2013*

**Physics**

An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.9 km, but when the snow clears, he discovers that he actually traveled 7.8 km at...
*January 29, 2013*

**Physics**

At a certain time a particle had a speed of 16 m/s in the positive x direction, and 2.2 s later its speed was 30 m/s in the opposite direction. What is the magnitude of the average acceleration of the particle during this 2.2 s interval?
*January 27, 2013*

**Physics**

Thank you so much!
*January 27, 2013*

**Physics**

At a certain time a particle had a speed of 16 m/s in the positive x direction, and 2.2 s later its speed was 30 m/s in the opposite direction. What is the magnitude of the average acceleration of the particle during this 2.2 s interval?
*January 27, 2013*

**Macroeconomics**

1. Consider the economic situation in the U.S since 2008 and discuss how supply side and demand side economic may be used to solve the current problems. Also, explain why you believe that these two approaches may or may not work. 2. Provide a numerical example and show how a ...
*December 18, 2012*

**macroeconomics**

1. Consider the economic situation in the U.S since 2008 and discuss how supply side and demand side economic may be used to solve the current problems. Also, explain why you believe that these two approaches may or may not work. 2. Provide a numerical example and show how a ...
*December 18, 2012*

**math 6th grade**

Y=X ???
*December 4, 2012*

**medical Technologies**

Which classification system uses resident assessment data to assign residents to one of fourty-four groups, with each assessment applying to specific days within a resident's stay?
*November 11, 2012*

**Accounting**

Accounting for a Job-Order Cost System [LO 3, 6, 7, 9] Bob and Beth Ford retired from the food services industry and began catering wedding receptions on a limited basis. The major costs in setting up their business included: linens, $1,600; two complete silver services, $1,...
*October 1, 2012*

**essay**

Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically
*September 21, 2012*

**chemistry**

If the sun is 150,000,000 km away, how many minutes does it take light to travel from the sun to the earth? Assume light travels at a speed of 3.0x10^10 cm/sec
*September 12, 2012*

**Geometry**

Quadrilateral JKLN is a rhombus with diagonals JL and KM. Find m<3
*September 5, 2012*

**microbiology**

What characteristics of living things do viruses have?
*August 30, 2012*

**Algebra**

1/6p+14<20?????? Help explain please!
*August 24, 2012*

**Algebra**

1p+14<20 I have tried everything! Please explain?
*August 24, 2012*

**algebra**

I'm having difficulty solving 0.7y+9=y+15????? I know the answer is 20 but can't remember procedure. Do I change the decimal to a fraction 1st???
*August 23, 2012*

**business**

Would you invest in the company you reviewed based on the information contained in the annual report? Why or why not? Please list examples to support your answer.
*June 17, 2012*

**PHYSICS**

An 800.0 kg roller coaster car is at rest at the top of a 95 m hill. It rolls down the first drop to a height of 31 m. When it travels to the top of the second hill, it is moving at 28 m/s. It then rolls down the second hill until it is at ground level. What is the kinetic and...
*June 6, 2012*

**Algebra**

simplify the following expression; express in terms of i. ã-98
*May 27, 2012*

**English**

Wow... Ms. Sue, you have the attitude of my old French teacher; in which she got fired and her teaching license removed :)...
*May 13, 2012*

**algebra**

show me how to work this problem b/3+6=82
*May 4, 2012*

**algebra**

show me how to work this problem b/3+6=82
*May 4, 2012*

**applied business law**

Jud Wheeler signed a contract to purchase 10 acres of land in Idaho from the Krauses. If Jud offered the Krauses considerably less for their property than its possible market value and the Krauses accepted the offer, could they avoid the contract on later learning that they ...
*May 1, 2012*

**chemistry**

what is the hcl of 2.00x 10 squared mL of 0.51
*April 27, 2012*

**Statistics**

two hundred math 115 students kept trak of the number of hours of homework they did during the fall 94 semester. the results are found to closely approximate a normal distribution with mean 14 hours and standard deviation 2 hours. determine the fraction of the students who ...
*April 21, 2012*

**chemistry**

4.46x10^-11 g/l
*April 9, 2012*

**Math**

A warranty identification number for a certain product consists of a letter of alphabet followed by four-digit number. How many possible identification numbers are there if the first digit of the four-digit number must be nonzero?
*April 3, 2012*

**Math**

Monique runs one fourth mondays one half on Tuesday three fourth on wednesday and one mile on Thursday how much does she increase her running time?
*April 3, 2012*

**programming in BASICS**

1. The result of computations done in a -----statement are not stored in the computer's memory. A.LET; B. PRINT; C. compute; D. PRINT USING. 2. which of the following statements may appear anywhere you need them in a program, and you can use as many as you want. A. stop; B...
*March 28, 2012*

**programming**

1.which of the following statements allows many branches or alternatives paths? A.IF-THEN; B.ON-GOTO; C. GOTO; D. all of the above. 2.The system command ---- is used to tell the computer to execute the program A.LIST B.EXECUTE C.END D.RUN 3. -----notation is used for ...
*March 27, 2012*

**child psychology**

My answer is anger.
*March 26, 2012*

**math**

The amount of water bucket holds,if b litres of water is added to the bucket already holding 4 litres of water.what is going to be the answer in algebraic expression
*March 18, 2012*

**principles of physics**

Yes. It should be in Newtons. :)
*March 9, 2012*

**Life Orientation**

I need answers
*March 8, 2012*

**math**

Show me the fully formula for 3x+4y=10 2x+y=5 simultaneously solve x and y
*March 4, 2012*

**healthcare fiancare**

I dont' know if i did problem C) correct and Need some direction in figuring out the annual interest rate. I have submitted my work so far. Can you give me guidance if I an on the right track or in left field
*February 12, 2012*

**healthcare fiancare**

HINT: 6% X $1,000,000 – {20% X ($1,000,000 – (6% X $1,000,000))} = 6% X $1,000,000 – {20% X ($1,000,000 - $60,000))}= 6% X $1,000,000 - {20% X $940,000}= 6% X $1,000,000 - $188,000 = $60,000 - $ 188,000= -$128,000 A) The interst due on a 10% loan of $1,000,000 ...
*February 12, 2012*

**Finance**

Your firm is considering the following three alternative bank loans for $1,000,000: A) 10 percent loan paid at year end with no compensating balance. B) 9 % laon paid at year end with a 20% compesating balance. C)6% loan that is discounted with a 20% compensating balance. We ...
*February 12, 2012*

**Physics**

26.31 m/s 18.68 m 1.95 s
*February 5, 2012*

**economics**

label a point f inside the curve. why is this an inefficient point? label a point g outside the curve. why is this point unattainable? why are pointS A THROUGH E ALL EFFICIENT POINTS?
*January 22, 2012*

**economics**

label a point f inside the curve. why is this an inefficient point? label a point g outside the curve. why is this point unattainable? why are pointS A THROUGH E ALL EDDICIENT POINTS?
*January 22, 2012*

**statistics**

The population is the group of random people selected that entered Fit Right Health. The samples are the herb and the placebo. The study is experimental because you are testing a herb on the population. The variables are the population taking the actual herb and those who are ...
*November 10, 2011*

**statistics**

A group of adults of 200 aged 21 to 50 were selected from those entering Fit Right Health stores in Washington state, and were randomly divided into two groups. One group was given an herb and the othe placebo. After 6 months, the the number of respiratory tract infections in ...
*November 10, 2011*

**World Geography**

Nov 10, 2011 - 17:06 Call for ban on tobacco ads Prevention experts have renewed calls for a ban on tobacco advertisements and sponsoring to protect young people from the risks of smoking. They said the current regulations did not go far enough and the tobacco industry was ...
*November 10, 2011*

**health**

Your community leaders have noticed an increase in positive STD test reports from the CDC. The nearest health department is more than 30 miles from your community. How might a community become involved in making public health interventions more effective in this situation? ...
*November 10, 2011*

**MATH (PLease HELp)**

Megan has three times as many quarters than nickels. She has one less dime than the number of quarters. If she has a total of $4.30, how many of each coin does she have ?
*October 18, 2011*

**Physical Science**

what forward force must the ground apply to the foot of a 60.0 kg person to result in an acceleration of 1.00m/s^2
*October 14, 2011*

**chemistry**

what are some experimental observations which support the theory that there is restricted rotation around double bonds? I know it would require more energy to breakthe pi bonds so maybe higher melting point? I can't think of anything else really.
*October 8, 2011*

**Arts and Science of quality of Learning**

How to write a objective question
*October 5, 2011*

**calculus**

ind an equation of the tangent line to the curve at the given point. y = sin 6x + sin2 6x, (0, 0)
*October 3, 2011*

**calculus**

What is the slope and y-intercept of the line whose equation is 4x+y+6=0.
*September 14, 2011*

**Statistics**

How can I get this homework help on Mon, sept 5, 2011.
*September 5, 2011*

**RETAIL MANAGEMNT**

Discuss they types of advertising media that you think are most appropriate for a restaurant that has a large population of foreign guests.
*September 4, 2011*

**Administration of Criminal Justice**

You are the captain in the police department’s special response unit. Your unit normally handles many special projects for the chief of police, from providing officers for parades and demonstrations to targeting an area in which there is a serious ongoing crime problem. ...
*August 31, 2011*

**chemistry**

You have a 22 g sample of ethanol with a density of 0.7893 g/mL. What volume of ethanol do you have?
*August 15, 2011*

**math**

i took the sat and recieved a score of 488 on the math section. the average score was 445 with a standard deviation of 110. where does my score fit in the sample and what is the z score?
*July 29, 2011*

**math**

i have two two judges convicting a robberer judge a mean is 33.0 and standard deviation is 2.0. judge b has a mean of 30.0 and a standard deviation of 8.1. which judge would the robber want to sentence?
*July 29, 2011*

**alg**

1. (20 points) Police use the equation to estimate the speed (s) of a car, in miles per hour, based on the length (x), of its skid marks upon sudden braking on dry asphalt. a. Solve this equation for d. b. A motorist is involved in an accident. The skid marks are measured to ...
*July 23, 2011*

**biology**

You are attempting to determine whether a plant-derived processed food sample (for example, a corn chip) contains material from a genetically-modified organism (GMO). First, you crush the sample and attempt to extract DNA from it. Next, you perform PCR using two different sets...
*July 22, 2011*

**math**

Andrew’s car starting at 12:00 noon travels west at a speed of 30 kph. Andrei’s car starting from the same point at 2:00 pm travels north at 45 kph. Find how fast the two are separating at 4:oopm.
*July 18, 2011*

**math**

4.5 hours
*May 24, 2011*

**calculus**

Use an appropriate local linear approximation to estimate the value of cotangent 44 degrees.
*May 1, 2011*

**Chemistry **

ia 3ag2S+2AL = 6 ag +al2s3 a double replacement or single replacement
*April 27, 2011*

**economics**

use the expenditure equation for gdp=c+i+g+xn find the values for each sector for the years 1929 and 1933. determine the precentage change for the two years.
*April 19, 2011*

**Personal Finance**

20,1254
*January 29, 2011*

**bio 101**

get your crystal ball to work it is bright sunny. The question is ho the organism in the diagrm has evolve physiologically to become suited to its environment. thank you
*December 11, 2010*

**English, 10th grade**

What are 2 complications in the novel, The Plague by Albert Camus?
*November 19, 2010*

**math**

20 copies = 50 lbs 1copy = x lbs 50/20 = x/1
*November 19, 2010*

**math**

2(10) + 2(15) = 50 m 15 +10 = 25 50:25 = 2 I've got this question in my school also and my teacher gave this answer
*November 11, 2010*

**Algebra II**

thanks!
*November 6, 2010*

**Algebra II**

Solve for n, N=(n^2-9n)/20
*November 6, 2010*

**5th grade**

24x4
*October 14, 2010*

**math**

COMPLETE THE TABLE FOR X AND y. (1,8), (2,14), (3,?), (?,24), (?,28). WHAT IS THE PATTERN FOR THE X AND Y INPUTS. WHAT IS THE RULE?
*September 27, 2010*

**Algebra**

Factor: 2x^8y^6+16x^6y^5+12xy
*August 31, 2010*

**G.A**

hard question
*August 28, 2010*

**Algebra**

Can someone please help me with this problem: Solve: -14<_3x-3<_-2
*August 20, 2010*

**math**

30/41
*August 16, 2010*

**social studies**

thank you Ms. Sue
*June 3, 2010*

**social studies**

what have been the reasons for the US' interactions internationally?
*June 3, 2010*

**social studies**

us reasons for interactions abroad
*June 3, 2010*

**10th grade**

Construct square ABCD and square GHIJ explain the answer showing step by step.
*June 3, 2010*

**general science**

in physics the desire of an object to keep doing what it is doing" is temed _______.
*May 29, 2010*

**mathematics**

the coordinates of the center of the hole in the paper are _____________.
*May 17, 2010*

**mathematics**

using a graph plot the following points: point 1 (1,0), point 2 (1,-1), point 3( 1,-2), point 4(2,-2)draw lines to connect from point 1 to point 3 to point 4, the lines you have just drawn most resemble which of the following letters of the alphabet? x, o, n, or l.
*May 17, 2010*

**mathematics**

the coordinates of the center of the hole in the paper are _____________.
*May 17, 2010*

**Hum205**

Assume you are a Humanities instructor tasked with explaining the social role of the arts in the Middle Ages. What are three relationships between the arts and Early Middle Ages culture you would want your students to know? What are three relationships between the arts and ...
*April 21, 2010*

**math **

you get 65 is that the answer. but the triangle has three sides two would be equal and the bottom one would be longer right?
*April 19, 2010*

**math **

the perimeter of a triangle is 195mm if the length of the sides are consecutive odd integers. what is the length of each side?
*April 19, 2010*

**Algebra**

(-7+p)(8+p)
*April 18, 2010*