Monday

April 21, 2014

April 21, 2014

Total # Posts: 68,226

**Plz help me.**

Oh. in that case: Im sorry. and i do my own homework. I took notes and did it myself. :)

**Plz help me.**

Fyi Miss Writeacher, don't take this personally, but i only asked u to check them. no need to be rude. thank you very much.

**My answers**

can sum1 check them? Please? :(

**Plz help me.**

Science, My answers 1. D 2. D 3.? 4. C

**Plz help me.**

Which of the following explains why your body may contain a carbon atom that was present in George Washington’s body in 1776? (1 point) Carbon moves in a one-way direction through living organisms only. Carbon moves in a one-way direction from the atmosphere and then thr...

**chemistry**

if I have 1.60g of urea, how much water, in grams, should be added in the preparation of a 23.1 percent by mass solution?

**accounting **

Corporations are subject to specific corporate tax rates different from those for individuals.

**math**

Corporations are subject to specific corporate tax rates different from those for individuals.

**Math**

How do you factor this? 4x^2 - 21x - 18?

**CHEM**

Thank you!

**CHEM**

what does the small a stand for?

**CHEM**

which formula do i use to solve for the rate constant of a 2nd order half life?

**math**

The voltage (in volts) induced in a coil of wire is v = (2t + 1)0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?

**Math**

Where did the 25 come from?

**TO DrBob222 or any science helper**

So it must be C6H8O7, THANK U SOOO MUCH FOR UR HELP :):):):)

**TO DrBob222 or any science helper**

so it is C6H8O7?

**TO DrBob222 or any science helper**

hmmmm then what is the formula?

**TO DrBob222 or any science helper**

hmmm maybe my formula is wrong, can you answer this: what is the formula for citric acid? and is it a acid, base or salt?

**TO DrBob222 or any science helper**

oops I spelt that one wrong its actually C6H8O7

**TO DrBob222 or any science helper**

identify the following formulas as acids, bases or salts: HCH3COO NaCL H2CO3 C6H8)7 Mg(OH) NaOH KBr Sr(OH)2 HNO3 please help really urgent :) thanks :)

**Science quick help needed**

identify the following formulas as acids, bases or salts: HCH3COO NaCL H2CO3 C6H8)7 Mg(OH) NaOH KBr Sr(OH)2 HNO3 please help :) thanks :)

**math**

Is the answer 2.80?

**math**

There are 518 student pictures for the yearbook. If 15 pictures fit on a page, how many pages can be completely filled?

**math**

It costs about .10cents per week to feed a snake. How much does it cost to feed 35 snakes for 4 weeks?

**math**

The highest point in alabama is 2,400 feet high. The lowest point is 500 feet high. How much higher is the highest point than the lowest point?

**math**

Mount washington in new hampshire is 2,096 yards high. How many feet is the mountain? (3ft = 1 yd)

**math**

The typical American eats 96.3 pounds of beef each year. If the average price of beef is $2.42 per pound, about how much is spent on beef by each american?

**math**

One radio station has an average of 12 minutes of advertising per hour. The station broadcasts 14 hours per day. How much advertising time can it sell each week?

**Plz,plz help!**

Plllzzzzzzzzzzzz

**Help**

4. Which of the following is not needed to make a model of the water cycle? an energy source water a closed container a drain 5. Which of the following explains why water is a limited resource? Water is present on Earth in a fixed amount that does not change. Water is degradin...

**math**

There was a competition that attracted 630 entries for a $250 prize. Molly gets paid $7.50 per hour for checking the entries, which takes her 2 minutes each. How much do they pay Molly to check the entries?

**Plz help**

Plz sum1?

**Science :( my answers**

4. idk? 5. A or B.

**Science :(**

4. Which of the following is not needed to make a model of the water cycle? an energy source water a closed container a drain 5. Which of the following explains why water is a limited resource? Water is present on Earth in a fixed amount that does not change. Water is degradin...

**Geography**

A clown is shot from a cannon with a speed of 25 m/s at an angle of 35 degrees. If his landing is at the same level as his take-off point, then how long is he in the air?

**physics**

a car thats 1000 kg is stopped and the brakes exert a force of 3000 N over a distance of 891 meter, how much work is done?

**math**

what does 2-fracture each third mean?!

**RE (Religous Education)**

what is rastafarinism? and how did it originate

**Plllzzz help sum1**

Idk 1.D 2.D

**Science asap**

1. Which of the following describes the correct sequence of events during the water cycle? precipitation → condensation → evaporation → runoff condensation → precipitation → runoff → evaporation runoff → condensation → evaporatio...

**physics**

A glider with a mass of 3 kg is moving rightward at a speed of 2 m/s on a frictionless horizontal air track. It collides with a stationary glider whose mass is 18 kg. If the collision is elastic, what is the speed of the gliders after the collision? Use SI units in your answer...

**Dramatic Scenes**

Do I have to end a one-word stage direction with punctuation? I remember my teacher saying we have to do so, but an example he gave us doesn't. For example: MARY.[Sadly] I'm ready to go. Do I need a period after "Sadly?"

**SS**

Yes, I know, but which principle of the two has more influence on religious art?

**SS**

What religious principle has more influence on Jewish, Christian, and Islamic art, the belief in one god or the messages from the prophets?

**History**

Military strength?

**History**

How would be more accurate to describe how Islam spread through the Middle East, through military strength or from imperial command?

**economics**

nvmd got it.

**economics**

Consider the problem of a competitive firm which has fixed costs of $1000, semi-fixed-costs of $1000, and variable costs given by q^2. What is the maximum market price at which the firm decides to supply zero?

**Physics**

Stan the strongman lifts a 524 kg dumbbell from the floor to 1.69 meters above the floor at a constant velocity. How much energy does it take Stan to lift the dumbbell?

**english**

For example, if it is a sport, then some people wonder why cheerleaders must also be concerned with the neatness and uniformity of their appearance. In addition, since cheerleading does not require an opposing group of cheerleaders, some people question whether it can be consi...

**Grammar**

Oops...the "th" was a typo. Guess I was still sleepy :). Thanks for the help!

**Grammar**

Complete the form as soon as possible, but no later than March 23th. Complete the form as soon as possible, but not later than March 23rd. Which sentence is correct?

**Calculus**

Show, using limits, that f(x) = x2 – x + 3, is continuous at x = 2.

**physics**

A spring cannon is fastened to a glider at rest on a horizontal frictionless air track. The combined mass of the cannon and the glider is 0.560kg. The cannon fires a ball with a mass of 50g horizontally at a speed of 14 m/s. How fast does the cannon-glider assembly move backwa...

**Math**

Find the missing dimension of the cylinder. Round your answer to the nearest whole number. 1. Volume = 84 in.^3 r = 6 in. h = ? 2. Volume = 650 cm^3 r = 8 cm h = ?

**English Answer Check--Please, help me!**

Oh. Alright. Thank you.

**English Answer Check--Please, help me!**

Are there any more clauses in the sentences that I may have overlooked?

**Evaluate This One!**

Are there any more clauses in the sentences that I may have overlooked?

**English Answer Check--Please, help me!**

Underline the clauses in the following sentences. Identify each as an adverb clause or a noun clause. 1. When _he discovered the data were corrupt_, Swift knew he had to do something. A: Adverb clause. 2. Henderson belived that _any Multivac provided_ was unreliable. A: Noun c...

**English Answer Check--Please, help me!**

Underline the clauses in the following sentences. Identify each as an adverb clause or a noun clause. 1. When _he discovered the data were corrupt_, Swift knew he had to do something. A: Adverb clause. 2. Henderson belived that _any Multivac provided_ was unreliable. A: Noun c...

**Math**

When given that the attendance to Taylor Swift concerts had been decreasing at a rate of 2% from 2009-2013. If the average attendance at her concerts in 2013 was 20,480 what would be the attendance in 2009? Also, what would be the domain and range?

**Math**

x^4 - 81 (x^2 + 9)(x^2 - 9) (x^2 + 9)(x + 3)(x - 3)

**Math **

How would you factor x^4-81?

**math**

2. How is the graph of y = –2x² – 5 different from the graph of y = –2x²? (1 point) It is shifted 5 units up. It is shifted 5 units down. It is shifted 5 units left. It is shifted 5 units right. 3. A model rocket is launched from a roof into a large fi...

**science(check answers)**

1) Depends. Potentially renewable resources (like aquifers) are renewable unless they're withdrawn faster than they can renew themselves, in which case they can be exhausted. 2) B. You can grow more plants to make more biofuel, so it's renewable. 3) D. 4) Not sure, but...

**Math algebra**

Just think of Patrick's subscriptions as the variable p. Charlie wants to sell twice as many as Patrick, so he's gonna sell 2p subscriptions. We know that they both need to sell at least (meaning greater than or equal to) 100 subscriptions, so... (Patrick) + (Charlie) ...

**Math algebra**

1) Charlie plans to sell twice as many magazine subscriptions as Patrick. If Charlie and Patrick need to sell at least 100 subscriptions in all, what inequality could be used to determine how many subscriptions, x, Charlie needs to sell? I really don't understand this.

**Human biology please help**

A) Enzymes B) Proteins

**Math**

-23m - (-35m) = -48 -23m + 35m = -48 12m = -48 m = -4

**physics**

A 50-kg box is being pushed a distance of 7.1 m across the floor by a force whose magnitude is 175 N. The force is parallel to the displacement of the box. The coefficient of kinetic friction is 0.19. Determine the work done on the box by each of the four forces that act on th...

**physics**

B) W = Fd (1.5 x 10^-4) = (0.37 - Fg)d (1.5)(10^-4) = (0.37 - 9.8m)d (1.5)(10^-4) = [0.37 - (9.8)(2.1)(10^-4)]d 0.00015 = 0.368d d = 0.0004076 meters A) KE + PE = KE + PE (1/2)mv^2 + (0) = (0) + mgh (1/2)mv^2 = mgh (1/2)v^2 = gh v^2 = (2)(9.8)(0.0004076) v = 0.08938 meters per...

**physics **

Starting from rest, a 2.1x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.37 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground?...

**Math**

Write a division equation that has a solution of -20

**Math**

You mean like an algebraic equation? 7x = 2 If that's not what you're looking for, maybe 2 x 1/7 = 2/7 will work.

**Math**

Write a multiplication equation that has a solution of 2/7

**PHYSICS**

The model airplane in Figure 5.6 is flying at a speed of 13.6 m/s on a horizontal circle of radius 19.1 m. The mass of the plane is 1.20 kg. The person holding the guideline pulls it in until the radius of the circle becomes 10.6 m. The plane speeds up, and the tension in the ...

**math**

Inversely means they're on opposite sides of the fraction (meaning one is the numerator, one is the denominator). So: 8/10 = 6/Y 8Y = 60 Y = 60/8 = 7.5 The answer is C.

**k**

A pole-vaulter just clears the bar at 4.07 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3900 J. What is his weight?

**ph**

A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ska...

**biology**

This isn't too scientific or anything, since it's been a while since I took chem, but it could be that the solution was only able to hold a certain concentration of CO2. If your shortest blowing time was enough to completely saturate it, then the other trials with long...

**PHYSIC**

PEi + KEi = PEf + KEf mgh + (0) = (0) + (1/2)mv^2 mgh = (1/2)mv^2 (9.8)(4.07)m = 3900 m = 97.8 kg Fg = mg = (9.8)(97.8) Fg = 958 N

**PHYSIC**

A pole-vaulter just clears the bar at 4.07 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3900 J. What is his weight?

**U.S. History**

1. True 2. False 3. False 4. True

**U.S. History**

TRUE OR FALSE (The First World War) 1. Until 1915, most Americans thought of the war as a European conflict that would have little effect in the United States. 2. Big Berthas were massive ships used to transport German troops. 3. The Treaty of Versailles demanded that Russia a...

**Math**

It's kind of tricky to answer these, since more than one graph could work. However, I'd say that a line or bar graph (leaning more toward bar graph) would be good for #1, and a bar graph for #2 (unless you're allowed to use pie charts, in which case that would be t...

**Math**

What kind of graph would you use to show the number of twins born each year? I think a line graph Would you use a line plot or bar graph to display a survey of what teens do for entertainment after school? I think line plot

**US History**

Define beatnik.Why was such a person dissatisfied?

**Math**

Claudia weighed her puppy each moth. Explain which data display you would use to show the puppy's growth and why you think this is the best method of displaying the data. A line graph because it shows change over time

**Math**

The data shows how a family budgets it's weekly income. It uses percentages and weekly bills in dollars. Which graphs could you choose to display your data? I think the circle graph because your using percentages, and maybe a line graph

**Math**

What kind of graph would you use to show the number of twins born each year? I think a line graph Would you use a line plot or bar graph to display a survey of what teens do for entertainment after school? I think line plot

**math**

Brittany has a gift box in the shape of a cube.Each side of the box measures 15 cm. What is the volume of the gift box?

**physics**

Carmen is standing on a giant skateboard that is initially at rest. If we ignore frictional effects with the floor, what is the momentum of the skateboard if Carmon walks to the right with a momentum of 500 ? A. 500 to the right B. 500 to the left C. zero D. 500 thought it wou...

**physics**

C. Matter (mass) cannot be created or destroyed, it can only change.

**physics**

Under what conditions is mass conserved? A. Whenever the system is isolated or closed. B. Only when the change is a chemical one. C. Always. D. Only when the change is a physical one. I was thinking A.

**physics**

If Earth's mass were suddenly and magically reduced to half its present value, the Sun's gravitational force on Earth would A. be reduced by a factor of 2. B. be reduced by a factor of 4. C. increase by a factor of 2. D. remain the same. I was told it remained the same...

**physics**

22. On the surface of a certain planet, there is one unit of gravitational force exerted on every 0.4 units of mass. The gravitational field strength on this planet has numerical value A. 0.4 B. 2.5 C. 1.6 D. 1 C.1.6 is wrong

**physics**

V = (4/3)(pi)(r)^3 V = (4/3)(pi)(2r)^3 V = (4/3)(pi)8r^3 (4/3)(pi)(8)(r)^3 ÷ (4/3)(pi)(r)^3 Everything cancels out but the 8, so the answer is A.

**physics**

If you double the radius of a sphere, its volume increases by what factor? A. 8 B. 6 C. 2 D. 4 I thought maybe C.2 or D.4

**physics**

B. Centripetal acceleration goes inward, so it follows that centripetal force would do the same. The velocity of the horses and everything is tangent to the circular path, though.

**physics**

Your instructor rides on a merry-go-round turning at a constant rate. In which direction does the net force on your instructor point? A. away from the center B. toward the center C. down D. tangent to the circular path I choose D.tangent to the circular path (wrong again)

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