Sunday

January 25, 2015

January 25, 2015

Total # Posts: 76,648

**psychology**

Infants generally sit up without support at a.9 months b.3 months c.6 months d.birth
*November 5, 2014*

**Chemistry**

Cs(s)+H2O(l)→ ? i thought it was H2+CsOH but the computer says that's wrong.
*November 5, 2014*

**physics**

A staging that weighs Wstaging supports a painter weighing 350 N. The reading on the left scale is 600 N and the reading on the right scale is 240 N. What is the weight of the staging?
*November 5, 2014*

**Thermodynamics**

12 kg of water in an insulated container is at 30 C. Initially, only 18 percent of the water is in the liquid phase. An electric heater, connected to a 120-V source and 9 A, is used to heat the system. Determine the time required to vaporize the entire water. Express your ...
*November 5, 2014*

**Finance**

If you open an IRA at a commercial bank and deposit $1000 in the account per year, how much will be in the account after 20 years if the funds earn 7%?
*November 5, 2014*

**Science**

brain central nervous system human being nerve tissue neurons Organize the parts of this body system in the CORRECT order according to the levels of organization in a multicellular organism, simplest to most complex..
*November 5, 2014*

**physics**

It has been said that sometimes lead bullets melt upon impact. Assume that a bullet with an initial temperature of 301 K receives 73.9 % of the work done on it by a wall on impact as an increase in internal energy. (The melting point of lead is 601 K, the heat of fusion for ...
*November 5, 2014*

**physics**

A cryogenic storage container holds liquid helium, which boils at 4.20 K. Suppose a student painted the outer shell of the container black, turning it into a pseudo-blackbody, and that the shell has an effective area of 0.791 m2 and is at 2.95·102 K. What is the rate at...
*November 5, 2014*

**physics**

An air-cooled motorcycle engine loses a significant amount of heat through thermal radiation according to the Stefan-Boltzmann equation. Assume that the ambient temperature is T0 = 24.5°C (297.65 K). Suppose the engine generates 11.5 hp (8.58 kW) of power and, due to ...
*November 5, 2014*

**physics**

A copper sheet of thickness 2.13 mm is bonded to a steel sheet of thickness 1.41 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 24.3°C. a) Determine the temperature (in °C) of the copper-steel interface. b) ...
*November 5, 2014*

**Grammer.Usage. and Micanics**

plp[-ji76udrt5e54y67es
*November 5, 2014*

**Chemistry please help **

A 1.516 M soltion is made by dissolving 1.570 g of the compound in 0.2238 mol of water. Determine the molar mass and apparent molecular formula of the compound.
*November 5, 2014*

**physics**

A truck moves with a constant acceleration and covers a distance between two points 180 apart in 10 seconds. The velocity as it passes the second point is 30 m/s. Whats the acceleration of the truck ? whats the velocity in the first point ?
*November 5, 2014*

**physics**

the speed of a train is reduced uniformly from 10 m/s to 5 m/s while covering a distance of 150 m. What is the acceleration of the train? how much farther will it travel before coming to rest, assuming the same acceleration ?
*November 5, 2014*

**arithmetic**

if the internal diameter of a cylindrical iron piep is 2.8 cm . If the pipe is melted uniformly by 1 mm then it formed a cylindrical rod ,find the diameter of the new rod?
*November 5, 2014*

**Calculus I**

Any help on how to solve this? The range of a projectile launched at an angle θ from the ground with velocity v0 is given by R(θ) = [v0^2 sin 2(θ)]/9.81 . If the projectile is launched at an angle of θ = π/6, use differentials to approximate the ...
*November 5, 2014*

**English**

Which of the following sentences both a direct and indirect object? A. My psychology professor has written several books. B.My pyschology prefessor is one of the best lecturers on campus. c.my psychology professor requires his students to quite a bit outside reading. d. My ...
*November 5, 2014*

**Calculus- Please Help!**

Very confused with this question. Amy help would be appreciated. The ideal gas law states that P V = nRT where P is the pressure in atmospheres, V is the volume in litres, n is the number of moles, R = 0.082 L·atm/K·mol is the gas constant, and T is the ...
*November 4, 2014*

**Calculus**

Draw a diagram to show that there are two tangent lines to the parabola y=x^2 that pass through the point (0,-4). Find the coordinates of the points where these tangent lines intersect the parabola. So far I have taken the derivative and got y'=2x.. Using point slope form ...
*November 4, 2014*

**English**

Sorry wrote it wrong. that Bacon really wrote the plays is dependent and They insist is independent
*November 4, 2014*

**English**

They insist that I like to read. I do see the verbs. Should have seen them. I am saying no comma and that I like to read is the Dependent clause. Thank You for making us think about it.
*November 4, 2014*

**English**

They insist that Bacon really wrote the play. I am saying this is a complete sentence with no dependent clause,. Am I right?
*November 4, 2014*

**Math**

What is the divisor of 12/18 and 4/6
*November 4, 2014*

**Calculus**

Show that the curve y=6x^3+5x-3 has no tangent line with slope 4. The answer key says that m=y'=18x^2+5, but x^2 is greater than or equal to 0 for all x, so m is greater than or equal to 5 for all x. I don't understand that x^2 is greater than or equal to zero. Where ...
*November 4, 2014*

**Calculus**

2. For what values of x dies the graph of f(x)=2x^3-3x^2-6x+87 have a horizontal tangent? My answer: (1.6,77.9) (-0.62, 89.1)
*November 4, 2014*

**Calculus**

1. On what interval is the function f(x)=x^3-4x^2+5x concave upward? My answer: (4/3, infinity) ?????
*November 4, 2014*

**Math**

Write the equation of 8 x 1/4 = 8/4 = 2
*November 4, 2014*

**Math**

8 x 1/4
*November 4, 2014*

**Math**

8x1/4=
*November 4, 2014*

**English**

Does a comma go after an independent clause with a subordinate conjunction followed by another independent clause? Example The classes will be held unless the schedule has been changed. I know one is needed if a dependent clause is first.
*November 4, 2014*

**Math**

What is the multiplier of 3/4 and 6/8
*November 4, 2014*

**5th grade math**

a company shows profits of $78020 the company wants to divide one quarter of the profits evenly among 47 emplpoyees how much money will each employee receive? how do I divide $78020 by one quarter?
*November 4, 2014*

**English**

I know to use a comma when a sentence is introduced by a dependent (subordinate) clause. Is a comma needed with two independent (subordinate) clause Example--The classes will be held unless the schedule has been changed. Or is, unless the schedule has been changed-----is a ...
*November 4, 2014*

**English**

If it rains we shall postpone the picnic. If it rains is a dependent clause we shall postpone the picnic is independent. I say to put comma between rains and we, Correct?
*November 4, 2014*

**Math **

1/3 multiply 300
*November 4, 2014*

**Chem31**

Using the systematic method and information in the Appendices F and J (note that log value is given in Appendix J), determine [SCN-], [Hg2+], and [HgSCN+] at equilibrium when Hg(SCN)2(s) is dissolved in water. Be sure to show all steps using the systematic method. Neglect ...
*November 4, 2014*

**geometry**

If you are standing 22 feet straight from a tree and you look at the top of the tree with a distance of 33 feet how tall would the tree be?
*November 4, 2014*

**Chemistry**

7809
*November 4, 2014*

**Math **

300 kilometers, 180 kilometers and 200 kilometers represents the trips that ms axler took in her job this week. How many kilometers had ms axler traveled when she was at the one third point in each trip? Explain your reasoning
*November 4, 2014*

**stats**

A research firm conducted a survey to determine the mean amount people spend at a popular coffee shop during a week. They found the amounts spent per week followed a normal distribution, with a population standard deviation of $4. A sample of 49 customers revealed that the ...
*November 4, 2014*

**Math**

Brett and Jim sign up for Memorial Day race in their town. There are two different events, a 5 kilometers and a 10 kilometers. Brett signed for 5 kilometers and Jim signed for 10 kilometers. Use thermometers to indicate when both Brett and Jim have finished 3/5 of their races...
*November 4, 2014*

**math**

If there are 15 minivans out of 42 cars how many minivans are there in 150 cars
*November 4, 2014*

**English**

If he had not worked hard, he would never have become a success. Looking for dependent clauses To me these both song dependent that they both need the other. Am I wrong?
*November 4, 2014*

**Chemistry **

A 1.516 M solution is made by dissolving 1.570 g of the compound in 0.2238 mol of water. Determine the molar mass and apparent molecular formula of the compound.
*November 4, 2014*

**MGMT**

How might a manager use leading by example to help develop ethical behavior in his or her unit?
*November 4, 2014*

**math**

Rosie had a necklace 2/3 beads were red, 14/21 beads wet blue how many are white is the and 3/21
*November 4, 2014*

**Exam week 4**

mmmm
*November 4, 2014*

**Statistics**

(a)You use the squareroot of 2 since there 2 Canadians P(X<1.65)=P[Z<(1.65-1.86)/(0.29/√2) Your answer should be P(Z<-0.98), You would then look at the Standard Normal probabilities table, which should give you, 0.1660. b) would be the same formula but you would...
*November 4, 2014*

**English**

Seeing snow on the street in the middle of April was odd. on the street--Prepositional phrase in the middle of April ----a prepositional phrase or is the latter 2 prepositional phrases?
*November 4, 2014*

**english 10**

Prompt A: compare and contrast the topics and themes of writers from the america and european writers. Promt B: Think about all the selections you've read thus far by european writers. examine one element that the selection have in common, not including the fact that they...
*November 4, 2014*

**English**

Another I am not quite sure of. Never swim alone at night. I know never is an adverb modifying swim. I think alone is an adverb also. Would it modify swim too?
*November 4, 2014*

**English**

Do not take too many chances when you drive at night. I know too is an adverb modifying many an adjective I know when is an adverb. Does it modify drive?
*November 4, 2014*

**English**

? So Both at the beginning of sentence is also a pronoun Both of the girls
*November 4, 2014*

**English**

Both of the girls insisted that they try to reach the end of the trail by themselves. I know they and themselves are pronouns. I know both can be used as a pronoun, but I am thinking no here. Am I right?
*November 4, 2014*

**Math**

Brett and Jim sign up to run in memorial day race.there are two different events in the race, a 5 kilometers and a 10 kilometers. Brett signed up for 5 kilometers and Jim signed for 10 kilometers. Use thermometers to indicate when both Brett and Jim finished3/5 of their races...
*November 4, 2014*

**English**

Well, suppose I say, "How nice it is?" Would that sentence be termed as grammatically incorrect?
*November 4, 2014*

**English**

Thanks! Is the exclamation mark added even when considering only grammar and not emotions?
*November 4, 2014*

**English**

To be grammatically correct, should the following sentence end with an exclamation or question mark? How nice it is !/?
*November 4, 2014*

**Math, Please Help! I don't understand!**

The questions are asking you to rearrange the equations for a given variable. remember, what you do to one side, you have to do to the other. so x/a - 1 = y/b for x add 1 to each side x/a = y/b + 1 now multiply by a x= ay/b + a
*November 4, 2014*

**Science Question**

24
*November 4, 2014*

**english 4**

Instructions within procedural texts should be phrased as __
*November 4, 2014*

**calculus**

A manufacturer of hospital supplies has a uniform annual demand for 80,000 boxes of bandages. It costs $10 to store one box of bandages for one year and $160 to set up the plant for prduction. Haw many times a year should the company produce boxes of bandages in order to ...
*November 4, 2014*

**physics**

Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.33 mm and length 23.5 mm, and the temperature of the strip is reduced by 4.50 K. If the strip is 23.5 mm long, how far is the maximum deviation of the strip from the straight orientation?
*November 4, 2014*

**Calculus please help me**

actually i solved my vertical asymptote it's -5 and 5. but how will i find the concave up and inflection point
*November 4, 2014*

**Calculus please help me**

f(x) = \frac{ x^3 }{ x^2 - 25 } defined on the interval [ -18, 18 ]. Enter points, such as inflection points in ascending order, i.e. smallest x values first. Enter intervals in ascending order also. The function f(x) has vertical asympototes at (? )and (?) . f(x) is concave ...
*November 4, 2014*

**physics**

a50g ball is hit to roll by a force of 100N.it rolls over 20m.what was its initial speed
*November 4, 2014*

**geometry**

a rectangular piece of land measures 0.7 km by 0.5km each side is to be fenced with 4rows of wires.What is the length of wire needed?
*November 4, 2014*

**Calculus**

Given f(2)=5, f'(2)=-1 find the value of d/dx[1/sqrt(f(2x))] when x=1
*November 4, 2014*

**Calculus**

1. On what interval is the function f(x)=x^3-4x^2+5x concave upward? 2. For what values of x dies the graph of f(x)=2x^3-3x^2-6x+87 have a horizontal tangent? Is there no solution because the equation can't be factored? 3. At what point on the curve y=1+2e^x - 3x is the ...
*November 4, 2014*

**science**

I posted the whole question again. Hg2+and SCN-=HgSCN+ =logarithim for the reaction is 9.64 = 10^9.64= 4.3*10^9 Ksp HG2(SCN)2= 3.0*10^-20 I have reactions Hgscn2> hg2+2SCN Hg2+ + SCN->Hgscn cations= anions 2[hg2+]+[Hgscn]=[Scn-] Mass balance [hgscn+]+[Hg2+]=[HGscn+]+[Scn-]
*November 4, 2014*

**SS**

Similar to how the American Congress is divided into the Senate and HOR, how is the Canadian Parliament divided?
*November 3, 2014*

**Calculus**

Two lovers have a spat and swear they will never see each other again. The girl walks due south at 6 mph while the boy walks at 10 mph on a heading of North 60 degrees West. How fast is the distance between them changing 30 minutes later?
*November 3, 2014*

**physics 1403**

10kg mass is attached to a 5kg mass by a 20cm cord. The 5 kg mass is attached by a 30cm cord to a motor that rotates the entire mass/cord system 5rev/s in the horizontal plane. What is the tension in each cord?
*November 3, 2014*

**SS**

What are some of the roles of the Canadian prime minister (military, laws, etc)?
*November 3, 2014*

**math **

what is the fastest unit rate of 1 mile ?
*November 3, 2014*

**Stats**

A roulette player makes a $10 wager that the ball will land on a specific number (this is known asa straight bet). The probability that the player wins this bet is 1/38 (and so the probability that he loses
*November 3, 2014*

**solve using unit rates**

suck my ass
*November 3, 2014*

**Phsychology**

A child who is easy to get along with, independent and self-reliant likely was raised by a person(s) who practiced the _________________ style of parenting.
*November 3, 2014*

**Math**

23 + -23 + 8b = 4.2 + -23 Combine like terms: 23 + -23 = 0 0 + 8b = 4.2 + -23 8b = 4.2 + -23 Combine like terms: 4.2 + -23 = -18.8 8b = -18.8 Divide each side by '8'. b = -2.35 Simplifying b = -2.35
*November 3, 2014*

**biology**

All cells need to make energy to perform basic functions. Animal cells make energy by breaking down sugars etc. while plant cells use photosynthesis. Some bacteria can do photosynthesis (cyanobacteria) and other bacteria obtain energy from the electron transport enzymes on ...
*November 3, 2014*

**Physics**

A 5.9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 12.1 N. Find the speed of the block after it has moved 2.6 m.
*November 3, 2014*

**rolling motion **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014*

**ashford**

American had made a mistake fighting the revolutionary war
*November 3, 2014*

**poetry **

I'm having trouble writing a persona poem. Can someone explain it to me? can i get an example of persona poem? thanks:)
*November 3, 2014*

**physics **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014*

**Physics **

A moving object has a kinetic energy of 182 J and a momentum with magnitude of 27.6 kg·m/s. (a) Determine the mass of the object. kg (b) Determine the speed of the object. m/s
*November 3, 2014*

**Physics**

A 73.5 kg ice skater moving to the right with a velocity of 2.97 m/s throws a 0.21 kg snowball to the right with a velocity of 29.3 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
*November 3, 2014*

**math**

A 20-year-old student decided to set aside $100 on his 21st birthday for investment. Each subsequent year through his 55th birthday, he plans to increase the investment on a $100 arithmetic gradient. He will not set aside additional money after his 55th birth- day. If the ...
*November 3, 2014*

**social studies**

can you just please tell me the answer>?
*November 3, 2014*

**social studies**

which section does it say that? i cant find it?
*November 3, 2014*

**social studies**

Describe some positive and negative events of the trustee period, and provide your own evaluation of the rule of the trustees as either generally a success or a failure. i have searched online i cant find anything can someone please help out
*November 3, 2014*

**physics**

Which parameter of a projectile depends on the horizontal as well as the vertical component of velocity of projection?
*November 3, 2014*

**Language Arts 8A**

#4 is d i think
*November 3, 2014*

**physics **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014*

**Social Studies**

The Greeks and Turks who share the island have been unable to truly unite as a single nation. Instead, Greek Cypriots administrate much of the island, while a small portion in the north is run by Turkish Cypriots. What challenges must these groups overcome in order to become ...
*November 3, 2014*

**science**

help me with my question
*November 3, 2014*

**physical science check asap**

check these answers 4.d 5.a 6.a 7.c 8.a 9.a 12.c 17.b
*November 3, 2014*

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