# Posts by Julia

Total # Posts: 659

**physics**

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both boats reach the edge of a 4.8 m waterfall. The spy's speed is 16 m/s and the officials; speed is 26 m/s. ...

**Science**

I need to find out the adaptations of algae and seagrasses so they can survive in the coral reefs

**Science**

It's a trig problem, the classic right triangle with the Earth, Venus and Sol at the points. IF you know the distance to Venus (use radar and get it to the foot ... or the mm) AND you know the angle to the Sun AND you wait until the angle from us to Venus to the Sun is 90 ...

**french**

I am not amazing at french, but my translator says that it says: We went to the club. The Alibi was a club of dance and we listened to a variety of music. We danced with the music salsa, the rock'n'roll, and the hip-hop. We danced for two hours! The entrance fee was 12...

**Social Studies**

Thanks so much!!!

**Social Studies**

Which Songhai city was the center of learning,trade and religion

**science**

The moon passes across the sun

**math**

what would be the equation of a line that has a slope of -2 and passes through point (3,5)? Please help! Math test tomorrow:(

**math**

can you explain it a bit more.. i don't fully understand.

**math**

how do i graph a fraction? like say I had y=3/4x+1, how could I create plot points that are whole numbers? please help.

**math**

the answer to this is 6. 4+1=5-2=3+3=6

**Math**

how do you find the slope of the best fit line graph? And what is it supposed to tell us?

**Physics**

A man lifts a 21.1 kg bucket from a well and does 3.1 kJ of work. How deep is the well? Assume that the man lifts the bucket at constant speed. Answer in units of m. I am not sure if I did this right: (mg)(d)= Wnet (21.1 kg)(9.81)(d)= 3100J d= 14.98 meters

**science**

thanks

**science**

A _____________________ is an earthquake that occurs after a large earthquake in the same area

**science**

thanks

**science**

What is it called when an earthquake make mud?

**Physics**

Three point charges are arranged along the x axis: q1 = −4.43 nC at x1 = 199 mm, q2 = 2.33 nC at x2 = -302 mm, and a positive charge q3 at the origin. What is the value of q3 if the net force on this point charge has magnitude 4.50 µL?

**Social Studies**

I'm not here to give any useful information, but I do have a question to ask. are you doing GPS debating? :P

**English Lit**

How to interpret the poem, Lady of Shallot by Tennyson??

**physics**

what is the formula for finding the decrease in kenetic energy

**physics!! plz answer me!**

In a collision between two soccer balls, momentum is conserved. Is momentum conserved for each soccer ball? explian... plz =)

**physics!! plz answer me!**

A 0.15 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of -390 N. How long does it take this force to stop the ball? How far does the ball travel before stopping? plz plz plz help!!

**physics!!**

if u jump onto the floor, are you more likely to be hurt if your legs are relaxed or if your legs are stiff and your knees are locked? explain....plz help =)

**Greens Theorem**

Can someone show me step by step how to work this problem out please. Let C be the triangle with vertices (0,0), (1,0), and (1,2). Find the following line integral by two methods, directly and using greens theorem. 2xy^2dx + yx^2dy Thanks!!!

**Calculus 3**

ok so the final answer is 1/2 e^y^2????

**physics**

A 20 kg child on roller skates, initially at rest, rolls 4 m down an incline at an angle of 30 degrees with the horizontal. If there is no friction between incline and skates, what is the kenetic energy of the child at the bottom of the incline? (g= 9.81 m/s^2)

**science**

Any advice on how to figure out solubillty of Agno3?

**Ethics**

where can i get a big list and descirptions of scientists who were involved with scientific fraud? i tried google without much success...

**physics**

thank you so much!! it was so frustrating to get the wrong answer after wrong answer..

**physics**

i know how to do it, i keep getting the wrong answer!! a bob of mass 4.00 kg is suspended from a fixed point by a massless string of length 1.50 m. The bob moves in a horizontal circle with the string always making an angle theta=22 from the vertical. what is the speed of the ...

**physics**

a car is travelling along a cruve having radius of curvature of 80.0 m, banked at an angle of theta=30. The coeff of static friction of ice is 0.05. What is: a) the slowest speed the car can negotiate the banked curve with? b) what is the fastest speed? first of all, im having...

**Math**

her's my word problem: george is twelve years older than Jeannie. The sum of their ages in 5 years is 50. How odl is jeannie now?

**physics**

You drop a stone from the top of a cliff that is 20 meters tall. Compute how long it will take for the stone to reach the bottom using various different choices for your coordinate system.

**math**

what is the radius of a circle using center and radius

**mat117**

Find all numbers for which the rational expression is not defined. 24/-8y

**physiology**

Why do the control mechanisms have several intergation centers? Julia, did you mean integration or interrogation? The control systems are not simple, they are multilayered, multistepped, and operate by releasing hormones, enzymes, and bioactive substances sequentially in time ...

**Math**

Why do we need to learn topography? Topographic maps show the hills and valleys. By learning to read a topographic map, you can tell whether a hill is really steep or has a very gradual grade. Check this site for more information. http://erg.usgs.gov/isb/pubs/booklets/symbols/

**Math**

I need to know for a project I am doing in math right now, where I can find the reason in life why we learn about Networking/Topograph. I've looked up definitions and the people who invented equations for it but we need to answer why we learn it in school Electrical ...

**english**

unscrabble words giuthlns rignps http://www.ssynth.co.uk/~gay/anagram.html http://wordsmith.org/anagram/ http://www.unscramble.net

**Math**

180 ml of a mixture of water and alcohol with 90% alcohol concentration is mixed with 70 ml of pure water. what is the alcohol concentration of the new mixture? Do the following: 1) Find out how many ml of alcohol was in the first mixture. (What is 90% of 180?) 2) Take that ...

**chemistry**

I posted this question on April 16 and received lots of help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has ...

**Chemistry**

I posted this question on Thursday April 12 and received some help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it...

**URGENT!! PLEASE Calc**

Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers "c" that satisfy the conclusion of Rolle's Theorem. f(x)=sin4pix , [-1/2,1/2] Well according to Rolle's Theorem, it has to be ...

**math**

Compute delta(y) and dy for the given values of x and dx=delta(x) y=x^2 , x=8 , delta(x)=0.5 Delta(y)= ??? dy = ??? I got dy=8 by doing: dy= (f prime of x)dx dy=2xdx dy=2xdelta(x) dy=2*8*0.5 dy=8 but I have not clue how to find delta(y) please help! deltay = y(x+deltax)- y(x...

**calc**

Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers "c" that satisfy the conclusion of Rolle's Theorem. f(x)=sin4pix , [-1/2,1/2] Well according to Rolle's Theorem, it has to be ...

**mathematics**

A car braked with a constant deceleration of 45ft/s^2 producing skid marks measuring 55 ft before coming to a stop. How fast was the car traveling when the brakes were first applied? Please round the answer to the nearest hundredth. Vo= ft/s Vintial^2 - Vfinal^2= -2*...

**Chemistry**

I posted this question a bit ago and received some help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been ...

**Chemistry**

Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15°C...

**pre-algebra**

Rewrite the equation so the variable is alone. Solve to find the value of the variable. 42=-2h Divide both sides by 2. Then change the signs of both sides. That will provide the answer. Possibly in 1 step: Divide by -ve 2

**pre-algebra**

Solve the equation- w(-2)=14 m-7= -3 -3h= -42 Here are some basic rules you need to follow. Get all your numerical terms on one side of the equation by doing the same process on both sides of the equation. w(-2) /-2 = 14/(-2) The -2 terms on the left cancel each other out to ...

**Social Studies**

Why did Thutmose III try to get rid of everything that had to do with Queen Hatshepsut? Because he envied her and hated her and stuff, and because he wanted to be the only ruler, not to rule aside Queen Hatshepsut. I looked it up in a book. You should too! Check this site. ...

**spelling**

i agree, it's spry.

**calculus**

Yes, that is correct. After that, plug in the numbers and you get an answer of dV=9.630.

**alphabetical order**

yo0ur a noob

**math**

3x+y=-4 x=3-3y y=2x x+2y=-4 You have written four equations in two unknowns. There is no x,y combination that satisfies all of them. What is your question?

**Rewrite question**

The minister joined the couple together as man and wife. What is your question, please? ?? The minister joined the couple together as man and wife The minister joined the couple together as man and wife. The minister joined the couple together as man and wife.

**Attention Smart People**

Where can i find as much info as possible about Forensics? Thanx in advance Whenever you are searching for something online, you have to be prepared for the possibility that none of it may be online. Or some may be, and some may not. In addition to searching on the Internet, ...

**Brain**

I don't need an answer to this statement. I just want to know what your reactions are. All I want is anything that came to your mind. I.e. What questions came to your mind? Do you guys have any ideas of why this might be occurring? I just want thoughts!!! A normal part of ...