Wednesday

December 7, 2016
Total # Posts: 1,000

**physics**

A hoop is at rest at the top of a 3.0 m long ramp with an angle of evelation of 24°. If the hoop rolls down the ramp, what is the final velocity of the hoop at the bottom of the ramp

*December 7, 2016*

**math, please help**

home work help al's garden is 18 feet long and 30 feet wide , he wants to put fence posts the same distance apart along all sides of the garden , what is the greatest distance apart he can place the fence posts

*December 7, 2016*

**Physics**

A 775 kg roller coaster car is at the top of a roller coaster car is at the top of a roller coaster as shown below. The height of the car at point A is the minimum height that is necessary for the car to stay on the loop. The radius of the loop is 30 m. What is the height of ...

*December 7, 2016*

**math**

10*2 = 20 ft (Length of boards that he has) 20/3.5 = 8.57 (Number of 3 1/2 feet pieces that he can make) So he does have enough wood.

*December 2, 2016*

**Math**

Number of pizzas = 4 Servings = 3/5 Servings that can be made = 4/(3/5) = 6.66666666 As 0.6 is recurring, this is equal to 1*0.666666666666, so as a fraction, this is 2/3. Therefore she has 6 2/3 servings, so Jamilla is correct.

*December 2, 2016*

**Math**

Since a 0 has been added to the number being divided by 562, this means that the answer given by the original equation will have an extra 0, so this will be 170.

*December 1, 2016*

**Math**

a) 3.4*200 = 680cm = 6.8m b) 3.4*25000 = 85000cm = 850m c) 3.4*10000 = 34000cm = 340m d) 3.4*500000 = 1700000cm = 17000m

*December 1, 2016*

**Math**

a) 3.4*200 = 680 b) 3.4*25000 = 85000 c) 3.4*10000 = 34000 d) 3.4*500000 = 1700000

*December 1, 2016*

**math**

9+(2/10)+(6/100) = 9.26*10^0

*December 1, 2016*

**math**

9+(2/10)+(6/100) = 9.26*10^1

*December 1, 2016*

**Pre Algebra**

Thanks you very much for your help. Now I can understand and grasp the concept more. That would be a good thing because our class is having a chapter test on Tuesday.

*December 1, 2016*

**Pre Algebra**

Allie needs 4 2/3 yards to finish sewing the edges of a blanket. She only has 3/4 of that amount. how much lace does Allie have?

*December 1, 2016*

**math**

5/6

*December 1, 2016*

**science**

g = 9.81

*December 1, 2016*

**chemistry**

The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

*November 25, 2016*

**Chem**

Phenol is a weak acid. We take 3.7 grams of phenol and dissolve it in 65 ml of water. To that water we add 40 ml of a 0.52 M solution of NaOH. You will need to look up the Ka value for Phenol a. What is the pH when the phenol is dissolved in the 65 ml of water ? b. Once the ...

*November 13, 2016*

**Physics**

A pair of objects with masses 3m and m are connected by a hook and have a massless compressed spring between them. Initially the objects are at rest. Then the hook unlatches, the spring expands to its released length and the larger mass is then found moving left with speed v. ...

*November 10, 2016*

**chemistry**

A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?

*November 4, 2016*

**chemistry**

When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equation for only those reactions that react: potassium nitrate solution and barium acetate I am seriously lost on this...

*November 4, 2016*

**chemistry**

Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help please!

*November 4, 2016*

**chemistry**

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (?), the magnetic quantum number (m?), and the spin quantum ...

*November 4, 2016*

**Maths please help**

(a) Find the points which divide the line joining A(1,3) and B(-4,-1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same x-y axes plot the point A(1,3) and B(-4,-1) and draw the line joining them. Add the three points which you calculated in part (a).

*November 1, 2016*

**college chemistry**

using cu+2AgNo3= Cu(No3)2 + 2Ag if you start with 100 grams of copper how many grams of silver can be obtained

*October 28, 2016*

**Math**

If the volume of a cube is 125m cubed, what is the expression for lenght of each side? I got the answer 5m cubed

*October 18, 2016*

**math**

The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me

*October 17, 2016*

**Literature**

Please, can anyone help?

*October 13, 2016*

**Literature**

What are some differences between “The Finish of Patsy Barnes” by Paul Laurence Dunbar, and “Raymond’s Run” by Toni Cade Bambara, “The Story-Teller” by Saki, and “The Drummer Boy of Shiloh” by Ray Bradbury? I am writing an essay and...

*October 13, 2016*

**Physics**

A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?

*September 29, 2016*

**structural grammar**

Identify: May I go to the library?

*September 23, 2016*

**Math **

There are two rectangles that are similar. One rectangle has an area of 24 and the other has an area of 15 how do you find the ratio of the area of the first rectangle to the area of the second rectangle?

*September 21, 2016*

**Algebra**

If f(x)=x^2-13 and g(x)=11-x, find (f-g)(3) (f-g)(3)=

*September 20, 2016*

**Geometry**

thanks!

*September 12, 2016*

**Geometry**

Down two where?

*September 12, 2016*

**Geometry**

The question is as follows: Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base. Please help. Thanks!

*September 12, 2016*

**Math**

5*6-15+9 should equal 24

*September 12, 2016*

**science**

Water can evaporate faster at higher temperatures.

*September 12, 2016*

**Geometry again**

This is exactly what the problem says: Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base.

*September 12, 2016*

**geometry**

That is what the problem says...

*September 12, 2016*

**geometry**

Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base.

*September 12, 2016*

**math**

A minute is equal to 60 seconds and 6second*10=60seconds so 170meters*10=...

*September 12, 2016*

**Math**

A 75% alcohol concentration mixture of water and alcohol and was made by mixing 30 ml of pure alcohol with 150 ml of original mixture

*September 9, 2016*

**Calculus**

An electric circuit switches instantaneously from a 5 volt battery to a 18 volt battery 3 seconds after being turned on. Sketch on a sheet of paper a graph the battery voltage against time. Then fill in the formulas below for the function represented by your graph. for t < ...

*September 6, 2016*

**American government**

Is the answer c?

*August 25, 2016*

**Algebra 1**

You buy a used car for $20,000. It depreciates at the rate of 21% per year. Find the value of the car for the given years (5 and 8) I'm using the equation v=c(1-r), and i end up getting 6154.11 ; im not sure if i subtract that from 20,000 or if that is my answer

*July 28, 2016*

**Physics**

A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 47.0 m/s ; when it leaves the bat, the ball is traveling to the left at an angle of 31.0 ∘ above horizontal with a speed of 58.0 m/s . The ball and bat are in ...

*June 26, 2016*

**Math **

If the population of a town grew 11% up to 5,173, what was the population last year.

*June 23, 2016*

**math**

A farm has a total of 30 goats and pigs. The number of goats is half the number of pigs. How many pigs are there?

*June 16, 2016*

**Math**

$18.00x18=$144.00

*June 16, 2016*

**CHEMISTRY**

Interesting. Thank you.

*June 16, 2016*

**CHEMISTRY**

Why is I- a stronger reducing agent than F-?

*June 16, 2016*

**English**

Look at the abandoned dogs makes more sense because it states that the dogs are ownerless. "Deserted" indicates more of an empty setting like "the town is deserted" meaning there is no one there. So 1 is better than 2. 3 would work. It strongly suggests you...

*June 15, 2016*

**Chemistry**

At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?

*May 6, 2016*

**Chemistry**

What is the equilibrium constant in the following reaction [C][O2]/[CO2] [CO2]/[C][O2] [C]^2[O2]^2/[CO2]^2 [CO2]^2/[C]^2[O2]^2

*May 4, 2016*

**Chemistry**

In an endothermic reaction at equilibrium, what is the effect of raising the temperature? The reaction makes more products the reaction makes more reactants*** the reaction is unchanged the answer cannot be determined

*May 4, 2016*

**Chemistry**

Consider the reaction N2(g)+3H2<-->2NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases momentarily ...

*May 4, 2016*

**Chemistry**

If sulfur dioxide and oxygen can be made into sulfur troxide, what is the reverse reaction? 2SO3-->2SO2+O2*** SO3+O2-->SO5 2SO2+O2-->2SO3 SO3+2SO3-->3S+4O2

*May 4, 2016*

**Chemistry**

At equilibrium, what is the rate of production of reactants compared with the rate of the production of products? much higher higher*** the same lower

*May 4, 2016*

**English**

What makes a verb irregular? does not form it's past and present by adding -ed or -d to the past participle does not form it's past and past participle by adding -ed or -d to the present*** does not act as a verb in context functions as a verb but appears as an adjective

*May 4, 2016*

**Chemistry **

Will 1 L of 1 M NaCl contain more chloride ions than .5L of 1M MgCl2? Explain.

*April 19, 2016*

**L.A.**

The answer is 1-B 2-D 3-D

*April 15, 2016*

**Physics**

An electron traveling at 7.00 x 10^6 m/s enters and passes through a parallel plate capacitor. determine the electric field generated by the capacitor. note that the electron just clears the corner of the positive plate. The distance of the parallel plate capacitor is 2.0 cm ...

*April 14, 2016*

**Algebra, functions**

Determine the exact value of k so that the quadratic function f(x) = x2 - kx + 5 has only one zero.

*March 23, 2016*

**Science**

Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration of the original ...

*March 23, 2016*

**Math**

Write a real- world problem that can be solved by writing and solving the equation 3 + 10 = X +3.

*March 9, 2016*

**Art**

I just took the quick check and the real answers are A C B I promise you that will give you 100 percent

*February 29, 2016*

**Physics **

A 17 g bullet strikes and becomes embedded in a 1.20 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.23, and the impact drives the block a distance of 8.6 m before it comes ...

*February 24, 2016*

**Art**

Seriously?!? What's the answer to all 5 art questions? Especially on this lesson.

*February 16, 2016*

**Language PLZZ HELP ME!!!!!**

1.A 2.D 3.D 4.D 5.B I got 5/5 100 percent

*February 16, 2016*

**Math**

The Problem: You win the grand prize on a game show. You have the following choices: Option 1: $1-million dollars paid as a $25 000 annuity every year over 40 years. Option 2: The present value of option 1 if the current interest rate is 4%, compounded annually. You ...

*February 11, 2016*

**sinusoidal functions**

State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

*February 6, 2016*

**grade 12 math**

In 2011, the estimated population of Canada was 34 699 000. If the government wants to use an alphabetic string using letters of the alphabet for every person in Canada. How long should the string of letters (repetition allowed) be so that every person in Canada can have a ...

*January 29, 2016*

**math**

Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at home, there is a 60% chance they'...

*January 25, 2016*

**math**

given a cylindrical waterbottle that has a volume of 1.25L, find the radius and a height that is 4-6 times the radius

*January 16, 2016*

**Chemistry**

Which of the following compounds contains both ionic and covalent bonds? SiO2 LiCN LiI PCl3

*January 15, 2016*

**math**

what is the postulate for this 2(x + 3) = 2x + 6

*January 11, 2016*

**math**

Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.

*December 27, 2015*

**math**

1.On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and range. State the domain ...

*December 27, 2015*

**math**

Express each radical in exponential form. Simplify using the exponent laws when possible. a) √k^2/3 b √ab^2 c 4√81x^8y^12 d 3√x √x

*December 26, 2015*

**math**

. Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.

*December 22, 2015*

**math**

On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and range. State the domain and ...

*December 22, 2015*

**math**

Determine the solution of the following systems of linear equations using elimination. Briefly explain your work. 3x +2y = 19 2x – 3y = -6

*December 22, 2015*

**math**

Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0

*December 20, 2015*

**math**

. A drama club was performed in an auditorium that has a capacity of 540. Students had to pay $7 a ticket and adults were charged $10. On opening night, the auditorium was full and they brought in $4764 in ticket sales. Write a system of equations to model this situation and ...

*December 20, 2015*

**math**

that isn't correct because you cannot do 7y/7=-1/7 to get a whole number for y.

*December 20, 2015*

**math**

Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0

*December 20, 2015*

**math**

Four years from now Emily will be as old as Cathy is now. Seven years ago, the sum of their ages was 22. Write a system of equations to model this situation and solve it using substitution to determine how old the girls are now.

*December 13, 2015*

**math**

The perimeter of a rectangular cattle enclosure is 400 feet. It is 40 feet longer than it is wide. Using a system of equations solve for the length and width of the enclosure using the substitution method.

*December 13, 2015*

**Physics**

Five moles of an ideal gas are compressed isothermally from A to B, What is the work involved if the temperature of the gas is 332 K? Be sure to include the correct algebraic sign. GRAPH: wvw.webassign.n3t/cj8/15-fc-009.gif wvw and n3t need to be retyped in their proper form ...

*November 30, 2015*

**Music**

Since using such a large scale is not practical, a logarithmic scale in decibels (dB) was introduced which is also in agreement with physiological and psychological hearing sensations. Decibels.

*November 30, 2015*

**Physics ._.**

Damon was close. m= (DAΔC)t/L = 1.24e-9*4.10e-4*1.37*3600/2.06e-2 = 1.217e-7

*November 30, 2015*

**Social Studies**

Are the two dots next to an answer simply you indicating that's what you think is correct?

*November 29, 2015*

**Physics**

Thanks for the response. I wish I had something to go off of. I'm thinking the equation dU=dQ-W has something to do with figuring this out. I'm just unsure where and when to plug things in.

*November 29, 2015*

**Physics**

Replace wvw and n3t in URL with proper letters.

*November 29, 2015*

**Physics**

The pressure and volume of an ideal monatomic gas change from A to B to C, as the drawing shows. The curved line between A and C is an isotherm. IMAGE:wvw.webassign.n3t/cj8/15-p-031.gif a)Determine the total heat for the process in joules. b)State whether the flow of heat is ...

*November 29, 2015*

**math**

on September 30th I want to go to the movies and dinner with my friends. it will cost $25 for dinner and $15 for the movies my balance is $60 willi have enough to go ou

*November 27, 2015*

**french**

Could you translate this question so I know what its asking? Tu trouves dix euros. Qu est-ce que tu as?

*November 25, 2015*

**Math**

Least to greatest and write as a decimal? 3 1/2, 3 1/4, 3 1/3, and 3 2/5

*November 18, 2015*

**Physics**

A person of mass 81.7 kg escapes from a burning building by jumping from a window situated 28.9 m above a catching net.The acceleration of gravity is 9.8 m/s^2. If air resistance exerts a force of 123.1 N on him as he falls, determine his speed just before he hits the net. ...

*November 11, 2015*

**differential calculus**

a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?

*October 14, 2015*

**Physics **

A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s. Find the angle, above the horizontal, of the stone's initial velocity. Answer in units of degree

*October 6, 2015*