Friday

April 18, 2014

April 18, 2014

Total # Posts: 1,091

**Physics 2**

@ Megan ---------------------- Torque = (# of turns)(current)(Area)((magnetic field)(sin(angle))) Area = (circumference)^2 / (4π) circumference is distance around the edge of a circle. Torque = (1)(7.94)(((4.52 x 10^-2)^2)/(4π))(8.04 sin(90)) =(7.94)(((4.52 x 10^-2)^...

**Physics 2**

Torque = (the number of turns)(current)(Area)((magnetic field)(sin(angle))) Area = π × r^2 the angle is the angle between the normal to the plane of the coil and the magnetic field. Torque = (45)(40)(π(5.1)^2)(0.49 sin(90)) Maximum torque occurs when the magnet...

**Chemistry**

How many grams of carbon dioxide are produced in C3H8+5O2 -> 3CO2+4H2O

**ALGEBRA**

I don't really know but I think 10 cars weren't blue or red

**algebra**

Hi Dear Jiskha team, I have Algebra homework and I will need some help. The homework is following: Suppose you are using a computer to draw a face on a coordinate plane. The eyes are at (–3, 3) and (3, 3). The tip of the nose is at the origin. To make a smiling mouth, you...

**spanish**

how do you say i care about others than myself?

**Physics**

A banked circular highway curve is designed for traffic moving at 65 km/h. The radius of the curve is 207 m. Traffic is moving along the highway at 43 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the ...

**Math**

1/6 is .16666(repeating) in decimal form. To make it a percent, multiply by 100. So it's 16.67%.

**5th grade math**

Try dividing it into sections, finding the area of each section, then adding them all together. Many shapes will resolve into triangles, squares, and circles. (For example, the ears would be small triangles.)

**Math(Algebra)**

How would you set this problem up and work it: The difference between two numbers is 16. Three times the larger number is seven times the smaller. What are the numbers? This one also: The differnce between two numbers is 18. The sum of twice the smaller number and three times ...

**Music Appreciation**

Thank you

**Music Appreciation**

Short mood pieces of no set form are called _____. a. tone poems b. preludes c. overtures d. mazurkas B?

**Math 543**

The number 3136 is the sum of the first how many odd whole numbers?

**Math 543**

The number 3136 is the sum of the first how many odd whole numbers?

**problem solve in math**

At a teacher’s conference on the first Saturday in November in Palm Springs, CA, 100 teachers meet in a large room. Each teacher shakes the hand of every teacher in the room, except for his or her own hand. How many total handshakes were made?

**Geometry**

Which does not represent a possible intersection of a line and a right cylinder? a. 3 points b. 2 points c. 1 point d. a segment A?

**Geometry**

Thank you!

**Geometry**

How many points in a plane are in the locus of all points equidistant from two parallel lines in the plane? a.0 b.1 c.2 d.infinitely many D?

**Math**

Im not too sure how to find the x-intercept & y-intercept for a sstandard form question when it looks like this: 4x-12=0 If someone could explain this too me that would be awesome. thanks :)

**Geometry**

Thanks!

**Geometry**

Describe the locus of all points, in space, that are 5 cm from line p. a. a line, 5 cm from line p. b. a pair of parallel lines, each parallel to and 5 cm from line p. c. a sphere with a radius of 5 cm. d. a cylinder with a radius of 5 cm. D?

**GEOMETRY ONE QUESTION PLEASE HELP?!!**

Name the smallest angle of triangle ABC, segment AC is 9, segment CB is 10, and segment AB is 8. <C <A Two angles are the same size and smaller than the third <B Thank you :) Your help is appreciated!

**GEOMETRY ONE QUESTION!? THANK YOU!**

THANK YOU!!!!!!!!!!!!!!!!!!!!!! ^_^

**GEOMETRY ONE QUESTION!? THANK YOU!**

In triangle ABC, centroid D is on the median line segment AM. AD=x+5 and DM=2x-1. Find AM. Thank You ^_^!!!!!

**Geometry**

The perimeter of triangle ABC is 29 meters. Line segment AD bisects angle A. Find AB and AC. CD=5cm, DB=4 cm.(triangle angle bisector theorem)

**FINANCE**

You deposit $2,000 in an account that pays 8% interest compounded semiannually. After 4 years, the interest rate is increased to 8.28% compounded quarterly. What will be the value of the account after 4 more years? (Do not round until the final answer. Then, round to the neare...

**science**

what is the weather degrees for november 20 through november 25 in las vegas

**Physics**

i do not know

**2 grade math**

yes you are but you are have to write like this 0.66% .

**Alg. II/Trig**

If m and n are real numbers, i^2=-1, and (m-n)-4i=7+ni, what is the value of m?

**Alg. II**

Simplify. Identify any x-values for which the expression is undefined. 1. (4x-8)/(x^2-2x) 2. (8x-4)/(2x^2+9x-5)

**Geometry**

Name the property of inequality that justifies the following statement: If BC+DE<FG+DE, then BC<FG. Subtraction Property of Inequality?

**science (PLEASE HELP)**

Why is condensation on the beaker resulted from burning methane a chemical reaction?

**trig derivatives**

How do I find the derivative of 6 + 8cosx?

**Trig/Algebra II**

(3+√2)/(3-√2) is equivalent to: a. (11+6√2)/ 7 b. (11-6√2)/ 7 c. 11/7 d. 7/ (11+6√2)

**physics**

an experimental jetplane just after takeoff climbs with a speed of 500km/hr at an angle of 37 degrees with the horizontal. At what rate is the plane gaining altitude?

**integrated algebra**

Graph 2y = -1 + 2

**math**

Is 2,340 divisible by 90? How do you know?

**World History**

Thanks!

**World History**

Since independence, in most Latin American countries a. elected governments have been overthrown by a military coup'etat. b. elected governments have continued to function peacefully. c. Socialist governments have come to power in most countries. d. Communist governments ...

**World History**

Thank you!

**World History**

A major problem in relations between Israel and the Arab states was the a. resettlement of Palestinian refugees. b. failure to develop trade agreements. c. status of Jerusalem as an open city. d. level of influence Great Britain still exercised. A?

**arithmetic**

1/3 and 1/4 and 1/8 and 1/5 and 10 and 1. Find the original number

**geography**

sea of japan

**Physics**

227

**Algebra**

John and two friends rent a canoe at a park. Each person must rent a life jacket. If the bill for the rental of the canoe and life jackets is 41, for how many hours did they rent the canoe?

**Algebra**

Use an equation to solve the problem. John and two friends rent a canoe at a park. Each person must rent a life jacket. If the bill for the rental of the canoe and life jackets is 41, for how many hours did they rent the canoe?

**Math**

I don't get what l and w would be

**Math**

WHAT IS THE PERIMETER OF A SQUARE WHOSE VERTICLES ARE A(-4,-3), B(-5,1), C(-1,2), AND D(0,-2)?

**Math**

sorry i meant 13

**Math**

TRY DIVIDING 65 BY 15

**World History**

Thanks again!

**World History**

People who proposed complete democracy for Great Britain were called a. anarchists b. Tories c. Chartists d. Conservatives C?

**World History**

Thank you!

**World History**

The Roosevelt Corollary extended the Monroe Doctrine by declaring that a. European powers might collect Latin American debts by force. b. European powers must give up their colonies in Latin America. c. the United States could intervene in Latin America countries if it seemed...

**Physics**

A female gymnast weighs 400 N. If she is hanging stationary from a high bar, how many forces are acting on her?

**chemistry**

The osmotic pressure of a solution containing 5.00 mg of an unknown protein per 10 mL of solution was 2.73 torr at 25 °C. Find the molar mass of the unknown protein.

**Math **

what kind of math journals, essays, & projects you guys do in 7th grade math??? i'm really curious i saw the grading policy 2 my skool website here is the grading policy for math DISTRICT GRADING POLICY MATHEMATICS -70% FORMAL ASSESSMENTS (Tests, Quizzes) -15% ALTERNATIVE ...

**Parenthetical Citations**

How detailed do I need to be with my parenthetical citations? I am using a website as a source with many different webpages. It is confusing because I don't know how detailed I need to be with web addresses. I must have 15 different webpages for the same site. Can I just ...

**Modern History**

Thanks :)

**Modern History**

Hey :) In the 1968 invasion of Czechoslovakia, was any international (western nations) help requested by those leading the reform or any political leaders such as Dubèek? Any info on this would be great! Thanks :)

**Biology**

Thankyou so much! :)

**Biology**

Hey! :) When looking at the surface area to volume ratio of a cell it's meant to be that the larger this ratio the more efficient the cell is in diffusion etc. I don't get how a ratio of 6:1 though could be the larger ratio in comparison to 54:27...Im just confused wit...

**Math**

Please can someone show me the steps to do this problem?? Also, please don't tell me to just google the solution because I've already tried and have tried to do this problem by myself for hours now...Thank you so much. You are measuring trees in a forest. Standing on t...

**Math**

Please can someone show me the steps to do this problem?? Also, please don't tell me to just google the solution because I've already tried and have tried to do this problem by myself for hours now...Thank you so much. You are measuring trees in a forest. Standing on t...

**Math**

Can someone please go over the steps to solve this problem? I know I need to find where the tugboat intersects the radar but I'm not sure exactly how to do this. A radar buoy detects any boats within a radius of 12 miles. A tugboat starts at a location 18 miles SOUTH and 1...

**Geometry**

Thanks

**Geometry**

Find the slope of a line perpendicular to the line passing through the given points P(6,-1),Q(3,-2). -3?

**Geometry**

Which of the following statements from Euclidean geometry is also true of spherical geometry? a. A line has infinite length. b. Two intersecting lines divide the plane into four regions. c. Two perpendicular lines create four right angles. d. The intersection of two lines cre...

**Geometry**

Thank you

**Geometry**

Find the slope of any line parallel to the line passing through G(2,-3) and H(-1,4). I believe the answer is 7/-3, but was wondering if it should be written 7 7 - / or / ? 3 -3

**english**

Hawaii is one of the most beatiful places on earht. what are the verbs in the sentence

**4th grade math**

suppose a bead maker wants to separate 10,000,000 beads into boxes. She will put 100,000 beads into each box. Into which box would she put the 4,358,216th bead?

**chem**

an aq. solution(NaCl) made by using 133g diluted to a total solution volume of 1 L.Calculate the molarity, molality & mass % of the solution(density of solution = 1.08g/mL) [ans: M=1.92M, m=2.0m, 10.4 %] i need the calculation work bcus my ans is contradict from the real ans. ...

**chem**

an aq. solution(NaCl) made by using 133g diluted to a total solution volume of 1 L.Calculate the molarity, molality & mass % of the solution(density of solution = 1.08g/mL) [ans: M=1.92M, m=2.0m, 10.4 %] i need the calculation work bcus my ans is contradict from the real ans.

**chem**

thanks...

**chem**

can i know ur answer bcus i got diff. from the actual ans,3.32M but i get 63.93 M. if im wrong could you show me the conversion value to L (0.9709L) and the moles (62.07 mol).(is my calculation)

**chem**

density of 20% by mass C2H6O2 solution in water is 1.03 g/mL. find the molarity of the solution.

**math**

how to find the slope of the curve 17x^2+12xy=100-8y^2 at the point where y=1. -i already d/dx but i didnt know how to find the slope of curve bcus they only give y. d/dx=(-34x-12y)/(12x+16y)

**math**

you get the same ans like me so the ans is wrong. Is that right?

**math**

the 1st term is y^3

**math**

find the eqt. of the tangent to the curves at (1,2). y^3+y^3=9(xy-1) [ans: y=5x-5] could some1 show me the calculation work bcus my ans is y=(6x+4)/5.

**chem**

compute theoretical yield (g) ~2Al+3Cl2->2AlCl3 ~2g Al, 2g Cl2 [ans:2.5g AlCl3] i need the calculation work bcus i got diff from the ans which is 7.12 g.

**chem**

a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed. (ans:20.2g) i need the calculation work bcus i got diff. from the ans which is 70.2g.

**phy**

Pulling up on a rope, you lift a 4.05 kg bucket of water from a well with an acceleration of 2.50 m/s^2. 1-What is the tension in the rope?

**phy**

A force of magnitude 7.50 N pushes three boxes with masses m_1 = 1.30 kg,m_2 = 3.20 kg, and m_3 = 4.90 kg .The mass is side by side. 1-Find the magnitude of the contact force between boxes 1 and 2, and 2-Find the magnitude of the contact force between boxes 2 and 3.

**phy**

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?

**Chemistry 2**

I have to calculate the Ccal using the following info: Initial Temp of water outside calorimeter=22.6 C Initial Temp of water inside the calorimeter= 100 C Volume of water in calorimeter= 50mL Volume of water outside calorimeter= 300mL Final Temp of water in calorimeter=27.9 C...

**Chem balancing equation **

C5H602+O2 ---> CO2+H2O what is the coefficient of O2?

**english**

Like the popular belief that older adults do poorer in schools than their younger counterparts, the midlife crisis

**World History**

Thank you

**World History**

Who was an English philosopher who believed all people have natural rights? My best guess is John Locke.

**Math**

Lower and upper confidence interval estimate ahead of two months for cod catch (no trend in cod catch but it is changing slowly) for smoothing constant á=0.225 was found 300 and 477.12 tons. If the estimate of ó2 from the monthly catch of two years is s2=900. The...

**math**

How can I find the length of a right triangles leg?

**Religious Studies**

From an academic perspective, when does the Job text first emerge in history?

**Religious Studies**

1. What is “the problem of evil,” and why is it particularly problematic for Western, monotheistic religious traditions?

**World History**

Thanks for the link!

**World History**

One cause of the Peloponnesian War was a. invasion of Athens by the Persians. b. invasion of Crete by the Mycenaens. c. conflict over control of the Delian League. d. economic and commercial rivalries among the city-states. D?

**World History**

The Peloponnesian War began, in part, because of a. economic rivalries among Greek city-states. b. threats of invasion by the Mycenaens. c. alliances formed among Sparta, Persia, and Crete. d. arguments over control of the Delian League. A?

**chemistry- can you check my answers?**

So for a and d are you saying there is no effect?

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