# Posts by andy

Total # Posts: 948

**gr.11 physics help!**

When an iceberg floats in the ocean, what fraction of it is visible?( The relative density of ice is 0.92, and the relative density of sea water is 1.03)

**adult education**

what type of language should you use in the invitation for a mechanical engineering professors?

**Pre-Calculus**

The Richtr scale was evied y Cahrles F.Richter a American geologist. The scale is based on the equation M(x)=logx/x0(little 0), where x is the seismographic reading of the earthquake and x0 i 1 miron 0.001mm (the seismographic reading of a zero-level earthuquake) a) Determine ...

**physics bobpursly help still having trouble**

A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...

**physics Bob Pursley plz help**

ok so I calculate PE when R is (1/1.019)*3.38e6 and then calculate Pe when R is just 3.38e6? Or are you saying multiple (Pe)(1/1.019-1/1)?

**physics Bob Pursley plz help**

A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...

**physics**

What is the pressure change in water going from a 3.0- cm-diameter pipe to a 1.8- cm-diameter pipe if the velocity in the smaller pipe is 3.0 m/s? Im using the equation pv2^2(A2^2-A1^2)/2A1^2 and get (1000)(3)^2(1.8^2-3^20/(2(3)^2) and get -2880 Pa but I'm getting wrong? ...

**algebra**

to find a percentage you do this X-number given Y-total number (X/Y)*100 so for example (25/50)*100= 50% you can also think of it this way 50*.50=25

**Physics Meteorite**

A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ...

**Physics 11**

A string that is 90cm long with a diameter of 0.75 mm and a tension of 60 N has a frequency of 100 Hz. What new frequency is heard when the length of the string is 100 cm long. Anyone help me please?

**Physics 11**

Can someone give me an accurate definition on "Principle of Superposition"? Extra info: Im studying Physics 11, Sound Unit

**physics**

A wheel initially rotating at an angular speed of 1.2 rad/s turns through 34 revolutions during the time that it is subject to angular accelaration of .4 rad/s/s. How long did the accelaration last? So I used theta=Wot+.5at^2. converted rev to rad. and set it up like a ...

**physics**

A 24 kg beam is attached to a wall with a hinge and its far end is supported by a cable. The angle between the beam and the cable is 90 degrees and the beam is inclined at an angle of 13.6 degrees with respect to the horizontal. What is the magnitude of the force that the beam...

**physics entry**

A meteor headed straight towards the earth has an approach speed of 2.00e3 m/s at a distance of 7 earth radii from the center of the earth. What will be its speed when it reaches earth a 6.38e6 m(ignore the effects of atmosphere)?

**physics escape**

The escape speed from a distant planet is 42 km/s. If the accelaration of gravity on the planet is 11.0 m/s/s, what is the radius of the planet?

**Physics 11/Chemistry 11**

What is the heating capacity of Zinc?

**10th grade English**

This is my short story essay. I've put some conversations now and then so please take that into account. I would really appreciate if you could fix any mistakes, awkward phrases or even how to make this essay a better writing. Thank You ¡®Honk! Honk! Move out of ...

**Physics 11**

Mark Ji shoots a 40gram arrow straight up in the air at 30m/s during a home archery training session a. assuming no air resistance, what is the maximum height that the arrow could reach? b. How fast is the arrow going when it hits the ceilings at a height of 15.0m?

**trig**

lx - 2l - lx + 2l > x The absolute value of x - 2 minus the absolute value of x + 2 greater than x. What is the Answer Please Help!

**p**

"Smell" is definitely the correct answer.

**psychology**

Similarity

**10th grade English**

This is the ruff draft of my speech on environment conservation. I am the first speaker of my group so if I mention some names or awkward ending, it is because of that. Please fix any awkward phrases or mistakes as soon as possible. Thanks Can we achieve both economic growth ...

**Physics 11**

Wow thank you very much!!!!

**Physics 11**

SPH3U1 Two blocks of mass 500.0 g and 200.0 g are suspended vertically as shown in the diagram. The top string is lifted vertically upwards with a force of 8.48N on the 500.0 g Block (sorry no diagram) Thank you very much for your help

**physics**

If an astronaut dropped a small rock near the surface of Pluto, how far (in m) would the rock fall in 1.1 s? (The mass of Pluto is 2.500×10-3 the mass of earth and the radius of Pluto is 0.18 of the earth's radius.)

**physics**

If an astronaut dropped a small rock near the surface of Pluto, how far (in m) would the rock fall in 1.1 s? (The mass of Pluto is 2.500×10-3 the mass of earth and the radius of Pluto is 0.18 of the earth's radius.)

**Physics**

The mass of Venus is 0.8140 times that of earth, and its radius is 0.950 times that of earth. Calculate the acceleration of gravity at the surface of Venus. Express your answer in g's (i.e. as a ratio to our acceleration of gravity). 9.01×10-1 is the correct ratio ...

**algebra**

1/2x-9=11 ADD 9 TO BOTH SIDES: 1/2x=20 DIVIDE BOTH SIDES BY 1/2: x=40 (Dividing a number by 1/2 is the same as multiplying it by 2)

**10th grade English**

This is my essay for the forum that I am attentding in few weeks time. The topic is shown below. Please make any corrections and check any awkward pharses A.S.A.P Thank you Can we balance Economic Growth and Environmental Conservation? Can we balance economic growth and ...

**Economics**

What rate does the FOMC set? Is the the Federal Funds Rate or the Discount Rate?

**Economics**

Who can and who can't vote in the FOMC?

**maths**

one mountain is 5000 ft high and can be reached by cable car from another mountain 7000ft away the other mountain is 3000ft high what is the lenghtof the cableto link the two mountains

**chem**

I see what you are saying but does that answer the whole question of how many NaOH grams will be produced? Because when I made .0522 moles H2 into grams, I got 0.0526 and that is just the grams for H2.

**chem**

Would it just be .222 moles H2O x (1 mole H2/2 moles H2O) because this would cancel the H2O and it would leave me with 0.111 mole H2?

**chem**

ok. 0.0522 moles Na 0.222 moles H2O

**chem**

i don't really understand your answer

**chem**

you lost me

**chem**

If 1.2 grams of sodium are reacted with 4.00 mL water, how much NaOH is produced? density of water= 1.00g/mL

**chemistry**

If 1.20 grams of sodium metal are reacted with 4.00mL of water, how many grams of NaOH will be produced (density of water= 1.00g/mL)

**history during the lives of early people**

I need help in how I can approach this assignment,so that I cover all the areas that are to be included and still write an interesting and quality paper, showing the ways of life during this time in history. The assignment reads like this:You are to write a minimum of 1 page ...

**place value through hundred thousands**

What is the expanded form for 417,058

**physics**

A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time I've figured out the upward motion part ...

**physics**

ok thanks very much I understand the upward motion part of the problem. I am still have trouble with the downward motion can someone explain. Thanks for the help

**physics**

yes, same person I just don't understand why im getting this problem wrong for a. predict the launch angle. I do tan inverse of 7.87/21.75 giving an angle of 19.9 degrees so I tried subtracting from 180 degrees but im not getting it right either way can you explain please?

**physics**

A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time a. what is the correct angle of his launch ...

**physics**

A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time a. what is the correct angle of his launch ...

**physics**

A ball is thrown upward from a platform 5.1 meters high with a speed of 13 m/s at an angle 45 degrees from the horizontal. what is the magnitude of its velocity when it hits the ground?

**10th grade English**

This is my history essay (well.. a speech) due in 5 days. Please correct any mistakes or awkward phrases ASAP. Thank You Good morning/afternoon Mr Bean and fellow classmates. Australia, as a country, has a short, yet explicit history since the arrival of European settlers. In ...

**10th grade English**

This is my personal reflective essay. Please fix any mistakes or awkward phrases ASAP My body and my mind became lighter than air around me, as I threw myself on a couch where my back enjoyed being at. Released from the monstrous term of school, I felt saint-like, as if I ...

**math**

A rectangle has area 6 cm (squared) and diagonal of length 2√5 cm. What is its perimeter? thanks

**history**

What effects did the American Antislavery Society have on America?

**10th grade English**

This is my English oral speech. Please check whether there are any mistakes or awkward phrases. Please help ASAP Published in 1974, Where the Sidewalk Ends by Shel Silverstein is a poem which depicts our typical human life. In this poem, he criticises our life full of distress...

**physics incline**

A cord connected at one end to a block which can slide on an inclined plane (incline 27 degrees) has its other end wrapped around a cylinder resting in a depression at the top of the plane (and the other angle at bottom is not a right angle, but 58 degrees). Determine the ...

**Music**

---Okay! I know lots of you out there like music! does anyone know any good Anti-bullying song? Please have a song that will work with the following -Guitarist -Bassist -singer -drummer -violin (optianal) - try to make it a upbeat song Thanks everyone!

**English**

A topic sentence for cooking meals, cleaning the home, shopping and running errands, and providing love and guidance.

**10th grade English**

This is my To Kill a Mockingbird monologue I am doing Nathan Radley. Any suggestions or corrections will be helpful I know what I¡¯m doing Arthur and it is for our own good. I told you many times about staying away from those Finches. Lord, I have. You keep putting ...

**10th grade English**

Remaining essays I had trouble posting my essay in one go. please correct them and any suggestions will be helpful Oh, Leonie, isn¡¯t it hard making contact with other people in this kind of place? Everyone¡¯s enjoying themselves but, I don¡¯t ...

**10th grade English**

This is second part of my previous Essay please help ASAP and maybe some suggestions Similar to Gwen, Coral is depicted as a withdrawn person who suffers from loses of her son. She seems to be locked inside an unseen world where she has to hide her true identity. While Coral ...

**10th grade English**

Please check any mistakes or maybe restructure some of the sentences. Need help ASAP Away, written by Michael Gow is an Australian play set in the summer of 1967-68. In the play, three unique yet in a sense stereotypical families experience their internal change by going ...

**math**

No Problem XD

**math**

try 0.25 x 80 will get you the answer then minus the number with the answer the calculator gave you It should look like this 0.25 x 80= 20 80- 20= 60 60/80 is 80% and 20/80 is 25%

**geography**

NewFound land is part of Canada there are 10 Provinces and 3 Territories -Im Canadian XD

**History WWI**

durring the war how did soldier broke "Stalemate", which was when both sides didn't have any ammo left or were too tired to fight ------Thanks--------

**Re: Math**

just re posting, because i haven't gotten a response for awhile now. Find the slope of the line y+mx+6 that passes through the point (-1,3).

**Math**

Find the slope of the line y+mx+6 that passes through the point (-1,3).

**chemistry**

1) i think this one is hydrogen bonding because in CH3OH, the H is bonded to an O. I think my teacher said all bonds have a tiny bit of dispersion force, but the main force is the H-bond. I am also confused, isn't h-bond also considered a dipole-dipole interaction? it'...

**chemistry**

So this is the case: liquid methanol, CH3OH is being prepared to be poured into a beaker of water. (THERE CAN BE MORE THAN ONE ANSWER FOR Q1-3) 1) What intermolecular forces are broken in the methanol when these substances are mixed? -hydrogen-bonding -dispersion forces -...

**Please correct Essay**

Lord of the Flies, written by William Golding, is one of the most famous novels around the world. It is a fiction story during the World War II, where groups of children crash land on a mysterious island and stay there until they are rescued. The novel contains several main ...

**Math**

An Egyptian Mummy stands upright in a case that is 3.5m high, and has a colume of 14m^3. The width of the case is half the length. What are the length and width of the case? Please leave an explanation Thanks!~~~

**ESSAY**

How was Brutus considered as ¡®the noblest Roman¡¯ despite the fact that he was one of the conspirators? Julius Caesar, written by William Shakespeare in 1599, was one of the most successful plays in our history. Although it is called Julius Caesar, the ...

**essay**

In the famous play, Julius Caesar, the most important characters would have to be Caesar and Brutus. Each character has its distinctive role, Caesar as the ruler of Rome and Brutus as one of the Caesar¡¯s best friends. They both have the same goal, but different ...

**English**

Please check my essay and make corrections. In the famous play, Julius Caesar, the most important characters would have to be Caesar and Brutus. Each character has its distinctive role, Caesar as the ruler of Rome and Brutus as one of the Caesar¡¯s best friends. ...

**English**

I've put a '/' key between each paragraphs. Thank you for helping. In the famous play, Julius Caesar, the most important characters would have to be Caesar and Brutus. Each character has its distinctive role, Caesar as the ruler of Rome and Brutus as one of the ...

**English**

Please check my essay and make corrections. In the famous play, Julius Caesar, the most important characters would have to be Caesar and Brutus. Each character has its distinctive role, Caesar as the ruler of Rome and Brutus as one of the Caesar¡¯s best friends. ...

**5th grade**

Why did many peple come to the Middle Atlantic colonies?

**AP Stats**

93% is right, instead of making a tree with .5 for the first two branches. The branch for taking prep should be .05 since 5% of the people taking the SATs have taken a prep course, then the branch for people who haven't taken a prep course for the SATs should be .95

**Math**

Thank You

**Math**

a gasoline pump delivers 4 2/5 gallons of gas per minute. How many minutes will it take to fill a gas tank that holds 16 1/2 gallons?

**psy101**

Many of the chemicals that affect the brain operate by a. absoring neural impulses b. imitating or cancelling the effects of neurotransmitters c. changing the sodium balance in the synapse d. duplicating the effect of the potassium in the nuclei

**3rd grade**

Yes, because only equal groups can be multiplied

**general**

Some states have high school starting at 9th grade while some start only in 10th. so when are the kids ready for AP classes? is this school dependent?

**physics**

k=F/x =1800/0.4 =4500 N/m

**biology**

Thanks....

**biology**

Can someone please give me an example of biogeochemistry

**help on chem**

What is the wavelength of light (nm) having a frequency of 1.82 x 1014 Hz?

**help on**

What is the wavelength of light (nm) having a frequency of 1.82 x 1014 Hz?

**9th grade**

what is the velocity of auarter dropped from a tower after 10 seconds?

**grade 8 math**

2:3 = x:96 96/3 = 32 2•32 = 64 64 students skied.

**Chemistry**

3Cu+8HNO3--> 3Cu(NO3)2+ 2NO+4H2O How many moles of HNO3 are required to react with 6 moles of Cu? How many moles of Cu(NO3)2 are produced when 3 moles of Cu react? How many moles of Cu must react to produce 4 moles of NO? If 4 moles of NO are produced, how many moles of H2O...

**english**

Sra, Thank you for responding. No, I'm talking about the Latin alphabet (i.e. ABCDEFG, etc.) Rhyme scheme operates by assigning rhyming lines to a specific letter (so something like "Comrades all, that stand and gaze,/Walk henceforth in other ways;/See my neck and ...

**english**

When mapping out a poem's rhyme scheme and the poem exceeds the amount of letters in the latin alphabet what symbols does one use to continue mapping the rhyme scheme?

**calculus**

The two statements above is wrong. you first move around the dy/dx = (y-1)/x^2 into dy/(y-1) = dx/x^2 Then you integral where it turns to ln( (y-1)/C ) = -1/x Next you move the e from the ln to the other side (y-1)/C = e^(-1/x) After that you times C to both sides and move the...

**Mathmatics**

so, the answer would be like this (x^5/5)-3x^2+C

**Mathmatics**

I know, but I don't see what you mean Is 5-3x^2 all under x^5

**Mathmatics**

an would it be (x^5/5) or is the whole rest besides the C on the bottom.

**Mathmatics**

Wait, is that the answer

**Mathmatics**

I tried doing this problem, but I have no idea how to do it, can someone show me how to get it done. Thanks. Evaluate the indefinate integral (x^4-6x)dx

**grade 5 math**

Tim's family was collecting aluminium cans to recycle.They found out that they would get two cents for every three cans they collected.If they collected 2,187 cans,how much money did they receive?

**Language Arts**

How do you correct this sentence: In September me and him gots to start going to middle school.

**Maths**

Thanks a lot