Sunday

September 25, 2016
Total # Posts: 639

**physics**

A satellite has a mass of 5950 kg and is in a circular orbit 3.80 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.15 106 m. What is the true weight of the satellite when it is at rest on the planet's surface

*October 28, 2010*

**physics**

A 280 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 6.00 m. (a) Find the work done by the pulling force...

*October 28, 2010*

**physics**

A 47.0 g golf ball is driven from the tee with an initial speed of 60.0 m/s and rises to a height of 24.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 7.0 m below its highest point?

*October 26, 2010*

**physics**

A 47.0 g golf ball is driven from the tee with an initial speed of 60.0 m/s and rises to a height of 24.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 7.0 m below its highest point?

*October 26, 2010*

**physics**

A motorcycle (mass of cycle plus rider = 3.0 102 kg) is traveling at a steady speed of 20 m/s. The force of air resistance acting on the cycle and rider is 1.8 102 N. Find the power necessary to sustain this speed under the following conditions. (a) the road is level (b) the ...

*October 26, 2010*

**physics**

A projectile of mass 1.450 kg is shot straight up with an initial speed of 20.0 m/s. (a) How high would it go if there were no air friction? (b) If the projectile rises to a maximum height of only 13.9 m, determine the magnitude of the average force due to air resistance.

*October 26, 2010*

**Statistics and Probability**

All printed circuit boards (PCB) that are manufactured at a certain plant are inspected. An analysis of the company’s record shows that 22% of all PCBs are flawed in some way. Of those that are flawed, 84% are reparable but the rest must be discarded. If a newly produced ...

*October 25, 2010*

**Statistics/Probability**

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots? how do you set this up? I did 1-.0536 and its wrong how to start? thanks so much!

*October 25, 2010*

**Statistics/Probability**

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots? how do you set this up? I did 1-.0536 and its wrong how to start? thanks so much!

*October 25, 2010*

**physics 11**

A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream. How wide is the river ?

*October 19, 2010*

**Astronomy**

it depends

*October 19, 2010*

**math**

i dont know

*October 8, 2010*

**math**

where would the parentheses go in this problem 6*6+6*6-6=426

*October 8, 2010*

**math**

thanks gina!!!

*October 8, 2010*

**math**

6+6/6*6+6=24 where do I put the parentheses to make it equal 24?

*October 8, 2010*

**PHYSICS**

A car travels at a constant speed around a circular track whose radius is 3.1 km. The car goes once around the track in 280 s. What is the magnitude of the centripetal acceleration of the car?

*September 30, 2010*

**3rd grade**

Hi

*September 27, 2010*

**English Literature**

I understand that, but what does Hrothgar say about is men and why does 'he' need to disparage Beowulf's actions as being foolhardy?

*September 14, 2010*

**English Literature**

ohh. i also didnt catch what Hrothgar's comments on his men were. and does "him" in the last sentence refer to Hrothgar or Unferth?

*September 14, 2010*

**English Literature**

That he believes in Grendel

*September 14, 2010*

**English Literature**

I still don't understand how that applies when thinking about Grendel...

*September 14, 2010*

**English Literature**

No because he doesnt want anyone else to be more famous/glorious than him. Rude and they try to put you down/make you feel like you will not be able to do it

*September 14, 2010*

**English Literature**

I needed help tying the first question into the second one--like how does the fact that Unferth is jealous of Beowulf apply when thinking about Grendel?

*September 14, 2010*

**English Literature**

Unferth accuses Beowulf of "wantonly tempting the waves" and risking his life for a "silly boast." Given what Beowulf and the narrator say about Unferth, how is Unferth's comment a reflection back on himself? How does it apply when we think about ...

*September 14, 2010*

**math**

1/4=2/8 2/8+1/8= 3/8

*September 12, 2010*

**Economics**

1. Explain why the idea of scarcity is the starting point for thinking economically. 2. Explain why an economist might look at hundreds of kids standing in line for lunch asd say, "there is an example of scarcity."

*September 12, 2010*

**algebra**

y=2x-6 4x-2(2x-6)= 12 4x-4x+12=12 12=12 infinite number of solutions

*September 12, 2010*

**4th grade**

Juan is thinking of an 8-digit number with a 4 in the hundreds place and a 1 in the ones place. What number would fit with these clues

*September 9, 2010*

**spanish**

i need help on this stem changer tu (pensar)______ que tener un perro es una cosa buena

*September 9, 2010*

**Math**

Rounded to the nearest ten I am 40. the sum of my digits is 11.. What is it?

*September 7, 2010*

**Algebra 1**

you are hiking. the total weigh of your backpack and its contents is 13 3/8 pounds. you want to carry no more than 15 pounds. how many extra water bottles can you add to your backpack if each bottle weighs 3/4 pound?

*August 30, 2010*

**Math**

The student needs to score a 50.

*August 27, 2010*

**Math**

The student needs to score a 81.

*August 27, 2010*

**IT210 week7/ DQ1**

Please post pseudocode or code showing how you would access a file as either a database or a sequential file. Describe in your code the differences between accessing the data. Post what is needed for this weeks assignment.

*August 10, 2010*

**math **

What number can be divided by 15, 5, and 3? The answer is 30 13/15 + 2/3 - 3/5 = 13/15 + 10/15 - 9/15 = 14/15

*August 10, 2010*

**Math **

Using the terms factors, divisors, multiple, product, and divisible by, write as mant statements as you can about the number sentence 4x7=28.

*August 9, 2010*

**math-word problem**

The shadow of a 4 foot pole is 6 feet long at the same time the shadow of a tower is 52.5 feet long. How tall is the tower?

*July 31, 2010*

**social studies**

The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation; > to restore ...

*July 12, 2010*

**social studies**

Definition of Horse Canal

*May 20, 2010*

**social studies**

What is another name for the equator?

*May 20, 2010*

**math**

A snail climbs a wall that is 16 feet high. Each day the snail climbs 5 feet, but each night it slips back down 3 feet. How many days will it take for the snail to get to the top of the wall

*May 19, 2010*

**math**

g oooooooooooooooooooooooooooooooooooooooooooooooodddddddddddddd

*May 10, 2010*

**Chemistry**

To raise the temperature of 5 kg of water from 20 0C to 30 0C, a 2-kg iron bar is heated and then dropped into the water. What should the temperature of the bar be (ciron = 0.46 kJ/kg 0C)

*May 3, 2010*

**science**

what is believed to be the first living thing on earth?

*April 28, 2010*

**8th grade**

ABoringJob

*March 20, 2010*

**physics**

I forgot to add this part. assume this wire has a resistance R which is a constant as the hoop is shrunk. (a) What will be the current I which is induced and show the direction of this current in your figure. (b) What is the magnitude of the induced B-field at the center of ...

*March 11, 2010*

**physics**

A circular conducting hoop of wire has a constant magnetic field |~B | = 1.7 Tesla passing through it so that the field direction is perpendicular to the plane of the hoop. There is an EMF induced in the hoop with magnitude 2.6 Volts because the hoops area A is shrinking (or ...

*March 11, 2010*

**physics**

A long straight wire of radius R = 1 cm carries a total current I = 1 Amp which flows uniformly through the cross-section of the wire. Draw a diagram of this wire and the current and the magnetic field which is produced. Using Ampere’s law solve for the magnitude of the ...

*March 11, 2010*

**physics**

how to see if the barber has cut your hair properly at the back?

*March 10, 2010*

**Temple College**

had some Psychology homework resereching a female Psychiatrist named Viola Brody. but when i reaserch her online through all the major search engines i come up empty. all i've found so far is that she wrote a book witch i already knew. can you help me with a place to look ...

*March 8, 2010*

**physics**

In the operating Room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. One gas that is often monitored is the anesthetic isoflourane (molecular mass = 3.06 · 10−25 kg). In a spectrometer, a singly ionized ...

*March 4, 2010*

**math**

mr. murphy's will: john murphy was a man with a loving family, a successful career and considerable wialth. one day, upon his realizing hthat he was approaching retirement age, he decided to write up his will. shortyly thereaftr he died. Under the terms of Mr. Murphy;s ...

*February 20, 2010*

**Math**

Jenna and Tony need quarters for bus fare. Jenna has 3 x as many as Tony. Together they have $11.00 in quarters. How many coins does each have?

*February 15, 2010*

**Math**

j]pmp=,k ' , \k\-0kppj'[

*February 10, 2010*

**Physics**

Yes, each half will become a magnet because the domains will just reinforce each other and create new north - south poles.

*January 15, 2010*

**english**

how do you get seven letters out of the word multiply you have to change letters around

*January 13, 2010*

**social studies**

why is 1776 an important year in American History? What document was written in this year

*January 10, 2010*

**5th grade math**

10 divided by 975

*December 17, 2009*

**chemistry**

a chunk of silver has a heat capacity of 42.8J/degrees celcius and a mass of 181g. calculate the specific heat of silver.

*November 16, 2009*

**ela**

what would you do if you woke up one morning and it is raining chocolate pudding, who would you tell, what would happen when you meet your friends?

*November 6, 2009*

**math**

0rad/s2

*November 4, 2009*

**Statistics**

The Internal Revenue Service is studying contributions to charity. The mean calculated from a random sample of 36 returns is $150. Assume that the population standard deviation is known and equal to $20. Construct a 98 percent confidence interval for the population mean.

*October 29, 2009*

**Physics**

What are two quantities of an object launched parallel to the ground which are equal to zero? I think one of the two is vertical velocity.

*October 26, 2009*

**math**

-8,000,000,000+999,999,999

*October 22, 2009*

**Physics - URGENT**

A boat travels at 3.8 m/s and heads straight across a river 240m wide at an angle of 145'. The river flows at 1.6 m/s. a. What is the boat's resultant speed with respect to the river bank? b. How long does ti take the boat to cross the river? c. How far downstream or ...

*October 19, 2009*

**Physics**

A boat travels at 3.8 m/s and heads straight across a river 240m wide at an angle of 145'. The river flows at 1.6 m/s. a. What is the boat's resultant speed with respect to the river bank? b. How long does ti take the boat to cross the river? c. How far downstream or ...

*October 19, 2009*

**Physics**

A boat travels at 3.8 m/s and heads straight across a river 240m wide at an angle of 145'. The river flows at 1.6 m/s. a. What is the boat's resultant speed with respect to the river bank? b. How long does ti take the boat to cross the river? c. How far downstream or ...

*October 18, 2009*

**physics - need help right now.**

A boat travels at 3.8 m/s and heads straight across a river 240m wide at an angle of 145'. The river flows at 1.6 m/s. a. What is the boat's resultant speed with respect to the river bank? b. How long does ti take the boat to cross the river? c. How far downstream or ...

*October 18, 2009*

**Physics**

A boat travels at 3.8 m/s and heads straight across a river 240m wide at an angle of 145'. The river flows at 1.6 m/s. a. What is the boat's resultant speed with respect to the river bank? b. How long does ti take the boat to cross the river? c. How far downstream or ...

*October 18, 2009*

**AP Physics - Work and Energy**

If you use the kinematic equation Vf^2=VoSin 45 + 2gd the answer would differ from one of the conservation of energy equation method. Vo=185m/s and vf=0 at max height Why is this?

*October 15, 2009*

**physics**

The correct solution is this: 3.5/4.9 = some answer s^2 then remember someanswer s^2 = t^2 so solve for t to get .845 seconds for time in air.

*October 11, 2009*

**physics**

Yea the solution provided is incorrect.

*October 11, 2009*

**Algebra **

Can you please give an example step by step of how to solve a system of linear equations in three variables?

*October 8, 2009*

**earth science**

soil maps are used to do what

*September 29, 2009*

**auto repair technician**

I do not want the questions I was looking for a study partner. And yes we are allowed to have a study partner look at the rules.

*September 28, 2009*

**science**

The living plants that are most similar to the first plants to bear gametangia are the _____. a) charophyceans b) seedless vascular plants c) angiosperms d) gymnosperms e) bryophytes

*September 22, 2009*

**Phyics**

Thank You not sure how i did catch that lol.

*September 16, 2009*

**Phyics**

A Rock Is Thrown Vertically upward with a speed of 12m/s. Exactly 1.00s later a ball is thrown up vertically along the same path with a speed of 18m/s. At what time will they strike each other? so far I got this but it does not seem to be working out for me. G=-9.80m/S^2 Y1=0+...

*September 16, 2009*

**vocabulary**

slavery in the united states

*September 8, 2009*

**social studies**

slavery in the united states

*September 8, 2009*

**6th grade**

a chocolate bar is separated into several equal pieces, if one person eats 1/4 of the piecel; and the second person eats 1/2 of the remaining pieces; there are six pieces left over. into how many pieces was the orinal bar divided?

*August 31, 2009*

**5th grade**

the two violinists played a duet. is the subject , two violinists ; is the predicate , played ?

*August 25, 2009*

**science**

stalagmites

*August 25, 2009*

**math**

Manday read that the arm of the Statue of Liberty is 42 ft long. She would like to know how long the Statue of Liberty’s nose is. How would you advise her to proceed?

*August 22, 2009*

**5th grade**

thank you mrs. sue my mom said you are awesome !

*August 20, 2009*

**5th grade**

early explorers took beads with them to americans. the complete subject is early explorers ?

*August 20, 2009*

**5th grade**

how do you seperate the complete and simple subject

*August 20, 2009*

**language arts**

artists use

*August 20, 2009*

**language atrs**

whats the complete subject , artists use a needle and thread to attach beads to clothes.

*August 20, 2009*

**5th grade**

the artist

*August 20, 2009*

**5th grade**

what is the complete subject , artist use a needle and thread to attach beads to clothing.

*August 20, 2009*

**5th grade**

what is the complete subject , a person must have very good eyesight to work with beads.

*August 20, 2009*

**Social Studies**

how did sugar and slavery contribute to both the rise and fall of mercantilism?

*July 28, 2009*

**Geography**

plisss tipe in this in google jared diamonds theory

*May 19, 2009*

**Calculus**

We're doing optimization problems and this is one that I am having trouble with: Suppose a business can sell x gadgets for p=250-0.01x dollars apiece, and it costs the business c(x)= 100+25x dollars to produce x gadgets. Determine the production level and cost per gadget ...

*May 3, 2009*

**calculus**

Never mind, I figured it out; because y= csc(e^6x), the ys cancel out, so we are left with -1/6 (integral of) dy, which gives us -1/6 csc(e^6x) + C. Thank you for the help!

*May 2, 2009*

**calculus**

I know that your answer is right because it is one of the options on my homework sheet, but I don't think I quite understand how everything cancels out. If we call csc(e^6x) y from the beginning, upon initial substitution we have: (integral of) (e^6x)(y)(cot(e^6x))dx now ...

*May 2, 2009*

**calculus**

We're doing indefinite integrals using the substitution rule right now in class. The problem: (integral of) (e^6x)csc(e^6x)cot(e^6x)dx I am calling 'u' my substitution variable. I feel like I've tried every possible substitution, but I still haven't found ...

*May 2, 2009*

**Calculus**

1. Use the Taylor series to calculate the limit. Problem: limit as x approaches 0 is equal to (1-cos(x))/(1+x-e^x). I did the problem out but I need help in seeing if its correct. limit as x approaches 0 is equal to (1-cos(x))/(1+x-e^x)= (1-(1-x^2/2+x^4/4!-...))/(1+x-(1+x+x^2/...

*April 28, 2009*