Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 165

**physics college level**

A 2.0-kg block is projected up a frictionless inclined plane with a speed of 10 m/s. The angle of inclination is 30o . The block goes a distance of _____ up the plane before stopping. Assume g = 10 m/s2

**physics**

Zak, helping his mother rearrange the furni- ture in their living room, moves a 59 kg sofa 2 . 6 m with a constant force of 36 N. What is the work done by Zak on the sofa?

**physics**

Zak, helping his mother rearrange the furni- ture in their living room, moves a 59 kg sofa 2 . 6 m with a constant force of 36 N. What is the work done by Zak on the sofa?

**Math Ms. Sue please**

the answer is 25

**precalc**

sine curve in the form of y = a sin(pi/2x) that passes through the point (2.5,-9.546)

**language arts**

what is verb or verb phrase for Boats might take weeks for the trip across the ocean

**Fractions**

would you eat more if you ate 1/3 of a small pizza or 1/3 of a medium pizza

**physics **

A car is moving at 37 m/s. It slams on its brakes and comes to a stop in 22 m. What was the acceleration from the brakes?

**College Algebra**

Perform the indicated operation and simplify if possible. Assume any factors you cancel are not zero. s/(s^2-5s-24)-4/(s+3)

**Trigonometry**

Point P is located at the intersection of the unit circle and the terminal side of angle theta in standard position. Find the coordinates of P to the nearest thousandth.

**PHYSICS! **

A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door, as shown in a view from the top looking down. The width of the door is 0.80 m. The magnitude of the torque of this force on the door with respect to the hinge is most nearly 2...

**history**

I give up.Bye

**history**

I did and i dont see how they are alike

**history**

so how are they alike???

**history**

And I am sorry ms.sue. I didnt treat you very nice. :(

**history**

so HOW exactly are they alike???

**history**

see, i used the same name and now no one will answer

**history**

Please help.

**history**

How were the Pueblo people like the Anasazi???

**Anasazi**

Thank you.

**Anasazi**

Also, how did the Anasazi create homes that were adapted to their environment?

**Anasazi**

And, ok i will keep the same names for each post from now on. But how can you know that I am using the same computer!!!!???? That is kind of scary!!!!

**Anasazi**

And I used to keep the same posts before and then I think you recognized me each time since you never answered my questions. so i always used different names.

**Anasazi**

what does <g> mean?

**Anasazi**

I have never heard of them before!!!!

**Anasazi**

who is ANA and ARIA???

**Anasazi**

No links please.

**Anasazi**

I need help with my history homework.

**Anasazi**

1) How where the Anasazi able to grow crops in their dry land?

**boring history**

geeeee thanks. It took you two dingbats THAT long!!!!! scoff!!!!! Just kidding thank you

**boring history**

can someone please help me???

**boring history**

why was the aztec civilization considered warlike???

**6th grade math**

liam is planting 30 bean plants and 45 pea plants in his garden. If he puts the same number of plants in each row and if each row has only one type of plant, what is teh greatest number of plants he put in one row?

**Physics**

An apple is placed 17.0 cm in front of a diverging lens with a focal length of magnitude 23.2 cm. What is the image distance i of the image of the apple through this lens? What is the magnification of the image of the apple? Wwhich of the following statements are true and whi...

**Physics**

On a sunny day, a 1.20 m long vertical stick in air casts a shadow 1.20 m long. If the same stick is held vertically and touching the flat bottom of a pool of salt water (n=1.71) half the height of the stick, how long is the shadow on the floor of the pool?

**Algebra**

which factors would you multiply first to find the product of 2x5x3? Explain your reasoning.

**English**

13 is R (MLK Jr.) Does anyone know who said, "I'll make a centerpiece out if it."????????

**English**

13 is R (MLK Jr.)

**Physics **

In an Atwood machine, one block has a mass of M1 = 520 g and the other has a mass of M2 = 320 g. The frictionless pulley has a radius of 4.6 cm. When released from rest, the heavier block moves down 51 cm in 1.00 s (no slippage). What is the tension T1? Find the pulley's m...

**Physics**

415V 505V 515V .------------.------------. There are 3 points w/same distance from each other (6x10-3m between each point). What is the magnitude and direction of electric field (E) in the vicinity of the origin (the middle point – 505V) ? Thank you!

**Advanced Algebra 2**

the sides of the triangle are in ratio 2:4:5. If the perimiter of the triangle is 88 meters, determine the legnth of each side.

**Physics**

If a tank is standing up i.e 1.200 dia x 1.100 high with 650 kg inside, How much water pressure to lift it Cheers

**Physics**

Hi, I need to know how much ground water presuure would be required to lift a 1.200m diameter plastic tank weighing 650kg out of the ground please, Please supply the answer in Kpa or psi Cheers

**physics**

Hi Drwls If the tank is standing up i.e 1.200 dia x 1.100 high with 650 kg inside, would the water pressure to lift it be the same Cheers

**physics**

Yes

**physics**

Hi I need to know how much ground water presuure would be required to lift a 1.200m diameter plastic tank weighing 650kg out of the ground please, Please supply the answer in Kpa or psi Cheers

**Physics**

golf club with a mass of 250 g travels at 50 meters per second hits a 40 g golf ball and continues traveling at 35 m/s. What is the speed of the golf ball after impact?

**MATH**

HOW DO I FIND THE LEAST COMMON DENOMINATOR

**math 4th grade**

I just want to say thank you. I tried to get this answer all over the web, eveyone wants money. One site wanted $30. just for 1 answer.

**math 4th grade**

is 80 sq feet the size of a kitchen or is it 8 sq ft

**animals**

What is the population of gentoo penguins?

**reading**

i have a report on william clark due it 2days i need help. FAST!

**Physics**

A football is thrown at 14.0 m/s at an angle of 35.0 degrees. How far away does it land?

**Social Studies**

someone already posted something similar to mine but i think they're in my class and we have way different problems to work on... name if the following involve, seperation in powers, checks and balances, judicial review, federalism, or some combination of these principles,...

**Social Studies**

but i cant get the answer... thats why i need help

**Science**

Compare and contrast the particle arrangement (density) of a solid, liquid and gas?

**PHYSICS**

A driver of a 7400 N car passes a sign stating "Bridge Out 30 Meters Ahead." She slams on the brakes, coming to a stop in 10 s. How much work must be done by the brakes on the car if it is to stop just in time? Neglect the weight of the driver, and assume that the ne...

**algebra II**

Convert to decimal notation 8.88 * x10^7

**grade 11 physics**

A bomber flying horizontally at 250 m/s releases a bomb 1500m above the ground. At the point of impact, what were the horizontal speed and vertical speed?

**5th grade math**

MAKE A SET OF 12 NUMBERS WITH THE FOLLOWING LANDMARKS MAX: 8 RANGE: 6 MODE: 6 MEDIAN: 5

**english 7th grade**

I am to find the subject complement and linking verb in this sentence. At first we felt overwhelmed by the job ahead of us. Could you please help me understand , the examples in my book are not helping. Thank you

**trig**

using the trigonometric identities find the exact (radical form) value of cos (105 degrees)

**science**

Explain why using standard measurements is useful

**Thermodynamics**

a worker cleans a railroad car with steam of 15000ft^3 car on inside, t=240F P=14.7psia of steam. the car is closed. the steam inside cools until P=12 psia, at which time salad oil is added to tank. find a. heat transfer from steam during cooling, b. amount of liquid water in ...

**physics**

impulse=F/t so impulse=20N/10s = 2 2=40N/t t=20s

**Thermo**

one more question: a worker cleans a railroad car with steam of 15000ft^3 car on inside, t=240F P=14.7psia of steam. the car is closed. the steam inside cools until P=12 psia, at which time salad oil is added to tank. find a. heat transfer from steam during cooling, b. amount ...

**Thermodynamics**

Thank you, seems to make sense, sorry was sure I heard differently in class.

**Thermodynamics**

I am pretty sure the temperature will decrease, there should be a heat transfer. Anyone verify this?

**Thermodynamics**

A rigid insulated closed tank consists of two compartments of equal volume separated by a valve. Initially one contains air at 145 psia and temperature of 130 F, while second is completely empty(vaccum). the valve is opened and remains so until both are in pressure and tempera...

**science **

looking for some adaptations the chinese golden pheasant might have made

**science (6th)**

please use the following terms in the same sentence- invertebrate, vertebrate and placenta. Thank you

**physics**

use the phythagorean theroem to answer this question. becca paddles a boat from the south bank of a stream to the north bank. She paddles at a rate of 8 mph. The stream is flowing west at a rate of 6 mph. what is beccá actual velocity. I need to understand how to figure...

**spanish**

what does this mean.... Que son algunas comidas tipicas en latinoamerica?

**grammar**

my neighbors across the street have a new car; it's a toyota

**Pre-Cal.**

Determine between which consecutive integers one or more real zeros of f(x)=3x^4+x^3-2x^2+4 are located? A. no real zeros B. 0 and 1 C. -2 and -3 D. -1 and 0 I was thinking it's either A or C? I need lots of help.

**Chemistry**

I dont understand why u did the Ka=Kw/Kb why cant u just use Kb? isnt it a base?

**Chemistry**

no because i keep getting .01359 for C2H4NH3^+ but obviously thats wrong i did x^2/.33-x=5.6e-4

**Chemistry**

Calculate the concentrations of all species present in a 0.33 M solution of ethylammonium chloride (C2H5NH3Cl). Okay so i tried doing HA = H + A ice table regular it doesnt work idk what Ka to use. b/c of hte chloride. i have to find [C2H5NH2][H+][OH -][C2H5NH3+][Cl -]

**chem**

i did quadratic and got .02922 and thats not the right answer for the H+ question...

**Chemistry**

NEWW- 0.10 M methylamine (CH3NH2) kb= 4.38e-4 calc the percent ionization so i did the ICE table to find that x=6.62e-3 (that was a typo the first time) and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong? my answer was 6.62% bu...

**chemistry**

0.10 M methylamine (CH3NH2) kb= 4.38e-4 calc the percent ionization so i did the ICE table to find that x=6.26e-3 and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong?

**Chemistry**

okay i didnt get 48.8 i got 68...

**Chemistry**

6.5e-5

**Chemistry**

Calculate the percent ionization of benzoic acid at the following concentrations: 0.00014 M i got 68% but it says its wrong

**VOCAB**

pawn: make a sentence does this work? my dad always said, "dont be a pawn, be your own boss."

**Chemistry**

0.70 M KOH find the pH

**Chemistry**

0.70 M KOH find the pH

**Chemistry Acid/bases**

thanks!

**Chemistry Acid/bases**

The concentration of H2SO4 in a solution is 3.20 10-6 M. Assume the acid dissociates completely in solution. What is the [H3O+] in the solution? What is the [OH-] in the solution? What is the pH of the solution? What is the pOH of the solution? OK SO I KNOW HOW TO DO THESE TYP...

**dynamics**

Find the mass center of a cylinder with height L and a hemisphere glued to the top with radius R. L=2R. The cylinder is standing up on its bottom end with hemisphere on top. Im so lost on this and cant use the formula to work.

**SPANISH**

I Need to write a letter to a girl in spanish for my spanish class. how do i start? how do i say, hi i really like you?

**US history**

was the bank war basically just the opposition of jackson towards the bank or was there mor to it? i already checked google.

**US history**

Can some one explain to me in baby words what the panic of 1819 was? like it was caused by the united states bank because...how?? like its says stuff about loans and speculators but i dont know what that means! thanks

**History**

I always get the Hutus and the Tutsis from Rwanda confused. Which was the group favored by the Dutch, and which was the group who initiated the genocide?

**Precalc**

if you have how do u do 2^2x - 2^x - 6 =0 (calc)how do u do it? using logs??

**help interpreting a DBQ question- Us History**

I have to write about the: constitutional, political and practical concerns of the Indian Removal act. i get the constitutional point but i dont understand what a political concern is or what a practical concern is is practical like they were afraid that if they removed the in...

** trigonometry**

i'm a junior in high shcool. my reivew packet refers to my midterm review packet.

** trigonometry**

okay so in my review packet under the "calculator" section it says law of sines and law of cosines. i dont know what that means. i wikipedia-ed it but i dont understand what they are saying. Please help!

**trig**

(cotxsec2x - cotx)/ (sinxtanx + cosx) = sinx prove. i keep getting (if i start from the left side) = cosx instead of sinx please help!

**naming chemical compounds**

what is the dihydrogen phosphate ion? and the answer is not H2PO4-, H2PO4, HPO4... =(