Thursday

September 29, 2016
Total # Posts: 130

**PHYSICS ---HELP!**

A 120-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the floor is frictionless, and for the next 17 m the coefficient of friction is 0.34. What is the final speed of the crate?

*October 6, 2010*

**PHYSICS ---HELP!**

Water flows approx. 0 over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.

*October 6, 2010*

**SETS AND COUNTING**

In a survey of 289 college students, it is found that 65 like Brussels sprouts, 93 like broccoli, 55 like cauliflower, 28 like both Brussels sprouts and broccoli, 24 like both Brussels sprouts and cauliflower, 20 like both broccoli and cauliflower, and 13 of the students like...

*October 4, 2010*

**MATH SETS AND COUNTING**

There are a total of 103 foreign language students in a high school where they offer only Spanish, French, and German. You are given the following details for this semester: 44 take Spanish. 44 take French. 42 take German. 7 take Spanish and French but not German. 5 take ...

*October 4, 2010*

**MATH**

Find the monthly payments for an ordinary annuity that will yield a future value of $122000 at % interest for 22 years. payment

*September 22, 2010*

**chemistry**

[Cu(NH3)4]2+ + SO4(aq)2 + H2O [Cu(NH3)4]SO4•1H2O What is the theoretical yield of the products?

*September 14, 2010*

**alg. II**

Graph and state domain and range: f(x)=[x] (greatest integer function)

*July 5, 2010*

**Math**

katie is going to adopt kittens from a litter of 11. how many ways can she choose a group of 3 kittens?

*May 5, 2010*

**English**

It's an indefinite prounoun

*April 5, 2010*

**English Lit**

Thank you!!!

*April 2, 2010*

**English Lit**

I need help on proof reading this story. Christmas should be a time of celebrating the birth of Christ, but it seems like people make it more about themselves and what should they get for each other and who’s gift is more expensive or how we can compete when it comes to ...

*April 2, 2010*

**Algebra**

trains a and b are traveling in the same direction on parallel tracks. train a is traveling at 60 miles per hour and train b is traveling at 64 miles per hour. train a passes a station at 1:25 pm. if train b passes the same station at 1:55 pm, at what time will train b catch ...

*March 1, 2010*

**Algebra 1- 8th Grade**

Find each product. 1) 2t(t + 2) 2) (2n +1) * (n - 4)

*April 30, 2009*

**Algebra 1- 8th Grade**

According to the 1990 Census, the population of the United States was 2.49 x 10^8. The cost of taking the census in 1990 was 2.6 x 10^9 dollars. How much did the census cost per person in the United States?

*April 29, 2009*

**Physics**

for gamma radiation 1rad=1rem, but for alpha radiation 1 rad=20rem. Why is there a difference?

*January 14, 2009*

**Biology**

Describe two scientific theory (atomic,kinetic,cell theory) and non scientic (moral, ethical, religious theories ).Differentiate between the scientific and non scientific theories explaining why there are some questions that science cnnot answer.

*October 1, 2008*

**history**

thank-you! i thought i posted the article but it looks like i didnt...

*September 17, 2008*

**history**

can someone tell me what this article is about? just type it in google- I dont really understand it. What I got from it is that Mcain is sort of going back on what he said years ago but i dont really get it. McCain Embraces Regulation After Many Years of Opposition

*September 17, 2008*

**history**

can someone help me write a thesis statement about susan B. Anthony and her role for helping women. It needs to be something along the lines of: Without Anthon'y creation of..........would not have been possible or Susan Anthony made the greatest contribution to women'...

*September 4, 2008*

**math**

A motorboat can maintain a constant speed of 16 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 20 minutes and the return trip takes 15 minutes. What is the speed of the current?

*September 3, 2008*

**math**

A motorboat can maintain a constant speed of 16 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 20 minutes and the return trip takes 15 minutes. What is the speed of the current?

*September 3, 2008*

**math**

I DONT UNDERSTAND WHAT THE ANSWER WOULD BE....

*September 2, 2008*

**math**

Wendy is a loan officer and has 1,000,000 to lend and is required to get an average return of 18% per year. If she can lend at the rate of 19% or at the rate of 16%, how much can she lend at 16% rate and still meet the requirement?

*September 2, 2008*

**Economics**

Demand function for Zatab: Qd = 15.0 - 0.2P Production cost per unit: $5 Mirk Labs incurred a $60 million R&D cost 1) What wholesale price will Mirk Labs set? 2) How much Zatab will it produce and sell annually? 3) How much annual profit does the firm make on Zatab?

*March 10, 2008*

**Economics**

Demand function for Zatab: Qd = 15.0 - 0.2P Q = annual quantity demanded P = wholesale price of one Zatab unit Production cost per unit: $5 Mirk Lab incurred a $60 million R&D cost a decade ago 1: What wholesale price will Mirk Labs set? 2: How much Zatab will it produce and ...

*March 10, 2008*

**Economics**

Hello, I'm kind of struggling with this question. Can someone please help clarify this question. Since stock price beta tend to vary depending on the time frame analyzed, daily, weekly, and monthly. How do these factors influence or undermine the usefulness of beta as a ...

*March 9, 2008*

**physics**

A positive and a negative charge, each of magnitude 1.7 10-5 C, are separated by a distance of 11 cm. Find the force on each of the particles. what formula do i use?

*January 12, 2008*

**Math**

as in 5x5

*September 30, 2007*

**Math**

wat is 5 times 5?

*September 30, 2007*

**ETH125**

I'm having a hard time understanding the Checkpoint assignment on Legislation Legacy...Can anyone help me? Here is the question: Post a summar of a current issue between Native Americans and the federal government. Identify the legislation that you think is linked to the ...

*June 23, 2007*