Saturday

December 10, 2016
Total # Posts: 1,157

**science**

A car slows down from a speed of 20m/s to rest in 25 seconds.Find its acceleration.

*December 8, 2016*

**physics**

A pendulum clock has a pendulum shaft made of aluminum which has a coefficient of linear expansion of 24.0*10^-6K^-1. At 22 degrees celsius the period of the swing of the pendulum is 1.00seconds. If the temperature is reduced to 5 degrees celcius, how much time does the clock ...

*November 26, 2016*

**Physics**

The temperature of the Sun’s surface (the so-called photosphere) is about 5500 C. Assume that the Sun’s surface is pretty close to a perfect black-body emitter. (a) At what wavelength does the peak intensity of Sun’s radiation lie? (b) Estimate the total power ...

*November 21, 2016*

**Geometry**

I am doing volume and surface areas of 3D figures, and am running into the problem of having to give the exact answers as well as approximate answers. The approximate answers I don't have a problem with but the exact answers are requiring me to get the solution of a ...

*November 13, 2016*

**Geometry**

It is saying the answer is 86.96 sq. meters though sorry should've included that in the first place. I just don't understand how they got that answer

*November 10, 2016*

**Geometry**

Samantha is buying carpet for her family? room, which is 8 yards by 13 yards. The carpeting is sold in square meters. How many square meters of carpeting will she? need? ? (Use 1 yd ? 0.9144?m.) I am pretty sure 8 and 13 need to be squared and then added together maybe? But I...

*November 10, 2016*

**Math**

Start with the integer 4. Subtract 8. From your answer subtract -2, and then subtract 17 from the last answer. What is your final answer?

*November 8, 2016*

**Stats**

In each hand of Blackjack, Megan wins $2 with probability 0.1, or wins $1 with probability 0.3, or loses $1 with probability 0.6. Suppose Megan continues to play 100 hands of Blackjack, and assume the outcomes of all plays are independent. (a) Compute the expected payo? after ...

*November 4, 2016*

**algebra**

the dollar price for a barrel of oil sold at a certain oil refinery tends to follow the demand equation below where x is the number of barrels of oils on the hand in ( millions ) a) how much should be charged for a barrel of oil if there are 6 million

*November 3, 2016*

**Algebra**

Also can you please show how you got the answer???

*October 18, 2016*

**Algebra**

New Orleans has highest elevation of 25, lowest -8. Long Beach has highest 360, lowest -7. Which city has an average elevation of -2?

*October 18, 2016*

**Math**

If recipe takes 1-1/4 cups of sugar to 2 cups of milk but if you only have 1 cup of sugar then how much milk do you use?

*October 15, 2016*

**Math**

At a local music store CDs cost 11.99including tax is the number of CDs purchased proportional to the cost of the CDs

*October 7, 2016*

**Physics**

A car will skid to a halt at a uniform rate of -9.4 m/s^2. If you measure skid marks that are 34 m long, with what speed was the car going just before the driver slammed the brakes?

*October 4, 2016*

**Math**

-7-14 :(-7)=

*October 3, 2016*

**Chemistry**

2NaHCO3 >> Na2CO3 + H2O + CO2

*September 30, 2016*

**Math**

If 3/8 of a cup of milk makes 6 muffins , how many muffins does 1 cup of milk make

*September 20, 2016*

**hcc**

also is wronh one??

*September 11, 2016*

**hcc**

When you add sugar to it, your cup of coffee becomes not only sweet, also fattening. which part is wrong??

*September 11, 2016*

**hcc**

we can say them self

*September 11, 2016*

**hcc**

which part is wrong? When a person finds itself in stressful situation, it helps to breath deeply.

*September 11, 2016*

**hcc**

we can say The bottle of tablets has expired.

*September 11, 2016*

**hcc**

The bottle of tablets has an expired expiration date. which part is wrong???

*September 11, 2016*

**hcc**

completely under

*September 11, 2016*

**hcc**

The physician started to perform the operation but the patient was not yet completely under anesthesia. which part of sentence is wrong?

*September 11, 2016*

**hcc**

no which we should use before administered.... since/from/as

*September 9, 2016*

**hcc**

A tuberin skin test should be read within 24 hours administered. since-from-as

*September 9, 2016*

**Math**

5= 6y; y

*July 25, 2016*

**Math**

X= 2; 7x^3 + 4

*July 25, 2016*

**accounting**

A term investment of 85000, is madr for 10 years at 4.25% interest. Find the value of the investment at maturity if interest is compoundes quarterly?

*June 16, 2016*

**Frederick **

A wire of length 50cm is cut into two parts and each part is bent to form a square. If the total area of the two square is 100cm², find the perimeter of each square.

*June 15, 2016*

**Chemistry **

When 28.2706 grams of solute are used to make a 932 mL solution of potassium hydroxide, what is the concentration of the solution?

*May 16, 2016*

**Chemistry **

How many grams of solute are required to make a 789 mL solution of calcium acetate with a concentration of 0.0049 M?

*May 16, 2016*

**Maths**

There is a lampost of twenty meters in height casting light on a tree 10 metres. How long is the shadow of the tree?

*May 13, 2016*

**Physics**

During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?

*May 3, 2016*

**Physics**

A bead of mass m = 41.5 kg is released from point A which is located 5 m above the ground and slides on the frictionless track as shown in the figure. Determine the beads speed when it reaches point C which is located 2.0 m above the ground

*May 3, 2016*

**Physics**

A 3.1 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 98 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. What is its potential energy after it has swung to position B, 34...

*May 3, 2016*

**Physics**

A point mass m = 115 g hangs from a string of length l = 1.07 m. Calculate the value of v, the initial speed m should be given at the bottom, so that the string reaches a maximum angle of = 31.4°?

*May 3, 2016*

**Physics**

During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?

*May 3, 2016*

**Math**

Which equation represents the relationship in the table below? K . M -----------.------------ 1 . 5 2 . 10 3 . 15 4 . 20 5 . 25 A) m=5k B) k=5m C) m= 5 + k D) k= 5 + m

*April 25, 2016*

**maths**

solve the equation log(y)/log(2) + log(y)/log(4) = 6

*April 10, 2016*

**english**

Okay thank you :) sorry I meant friend.

*March 31, 2016*

**english**

so for #1 , can freidn be a direct object?

*March 31, 2016*

**english**

Thanks Ms.Sue, So I don't have any of the direct objects correct? and how can I find the direct object pronoun?

*March 31, 2016*

**english**

I have to find out the direct object pronoun and then replace the direct object with a direct pronoun. Please check my answers. 1.My friend sells his new car. (car is the direct object, and I replace car with im not sure. 2. My parents watch the news . ( news is the direct ...

*March 31, 2016*

**English**

I need an example of a simile for 'relieved'.

*March 28, 2016*

**Calculus**

Let f(x) be defined by f(x) = x/(x - 4). What is the image of f?

*March 27, 2016*

**Calculus**

i don't understand what you did

*March 27, 2016*

**Calculus**

The function f(x) = x^3 + x an inverse. Compute f^-1(0) and f^-1(2). Hint: Do not try to evaluate f^-1 explicitly.

*March 27, 2016*

**business math**

Camille Keegan sells lamps for $105.55 that cost her $75.00. Camille's percent of markup based on the selling price is:

*March 22, 2016*

**linear alg**

(a) Find T((ax^2 + bx + c) + (px^2 + qx + r)). (b) Find T(k(ax^2 + bx + c)). (c) Find the image of 3x^2 − 2x + 1. (d) Determine another element of P2 that has the same image.

*March 21, 2016*

**Chemistry**

Aqueous sodium sulfide reacts with aqueous calcium chloride to make a solid. The % yield is 85%. Calculate the amount of each reactant needed to actually make 3.0g of the solid.

*March 20, 2016*

**Chemistry **

We did a titration of calcium hydroxide lab in chemistry, once with and once with edta, we have to calculate the solubility for both, and the ksp, for the hcl I did (concentration)*(Volume of hcl used) then that answer divided by two divided by the amount of divided by the ...

*March 14, 2016*

**Physics**

Someone please help. A radio needs to be tuned to a range of values between 526.5 - 1606.5 kHz. Choose a combination of inductor and variable capacitor values within a tuned circuit that would meet this requirement. Choose practical components from standard vendor web sites (e...

*March 10, 2016*

**math**

Construct a 2 × 2 matrix that defines a shear of factor 4 in the y-direction, followed by a scaling of factor 5 in the x-direction, followed by a reflection about the y-axis.

*March 6, 2016*

**Math**

Find a single matrix that defines a rotation of the plane through an angle of π/6 about the origin, while at the same time moves points to five times their original distance from the origin.

*March 6, 2016*

**Linear Algebra**

Yeah I understand that part, but what about projection onto vector u?

*March 6, 2016*

**Math**

Did you manage to figure out this assignment? I have the same portfolio assignment and it is super confusing!

*March 2, 2016*

**Writing**

Where is somewhere I can get a definition from that I can cite as a scholarly source? My prof said that we can't use an online dictionary.I need to find the definition of universal health care if that matters

*February 29, 2016*

**Chemistry **

I did a lab, an kinetics lab (iodide clock) and in my lab report I have to calculate the initial rate in mol L-1 s-1 and I'm not sure how to do that. I have the [I-] and [S2O82-] in mol L-1 already. The reagents are [KI] [NaCl] [Na2S2O3] [Na2SO4] [K2S2O8].

*February 28, 2016*

**U.S History**

Are advertisements valuable primary sources/reflections of culture? Why or why not?

*February 26, 2016*

**Chemistry **

27% of heat produced by the stove's gas burner is transferred to the soup in the covered pot, the rest is lost. Determine the total mass in grams of methane that must be burned to heat 800 ml of water from 22 to 90 degrees C. The density is 1.08 g/ml and the specific heat ...

*February 26, 2016*

**Chemistry **

I have to write the rate law for two elementary reaction equations A ) 2a+b>c+d B ) X+Y>Z I'm pretty sure it's just k[ A ][ B ] and k[ X ][ Y ] but does the coefficient affect it in this case? is it [ A ]^2 ?

*February 24, 2016*

**Chemistry **

PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react = 20 seconds...

*February 24, 2016*

**Chemistry**

I looked part 2 for a bit and by looking at the slow step and using that to figure out the rate law I think it might be mechanism 2, would this be right?

*February 24, 2016*

**Chemistry **

PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react = 20 seconds...

*February 24, 2016*

**Chemistry **

I have to write the rate law for two elementary reaction equations A ) 2a+b>c+d B ) X+Y>Z I'm pretty sure it's just k[ A ][ B ] and k[ X ][ Y ] but does the coefficient affect it in this case? is it [ A ]^2 ?

*February 24, 2016*

**Math**

I need to find the limit as x goes to 3 of (1-sqrt(x-2))/(x-3)), I know the answer is -1/2 but I have no idea how to get to the answer, and help would be appreciated

*February 17, 2016*

**Chemistry **

I have to calculate the heat capacity of a coffee cup calorimeter, but I'm not sure how. I have NaCl and NaOH, they both start at the same temperature, and I have the mass of the solutions used. I'd appreciate the help!

*February 8, 2016*

**Science **

Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the reaction between water and oxygen. Calculate the ΔG°rxn of each reaction below? 1) H2(g) + O2(g) <==> H2O2(l) ΔG°rxn=? (in ...

*February 5, 2016*

**Math**

find the limit as x->3 of (1-sqrt(x-2))/(x-3) I'm not sure how to get the answer, I know it's -1/2, but I don'y know how to get that.

*February 4, 2016*

**math**

The graph of y=x^2 is transformed by a stretch of scale factor 2 parallel to the x axis, followed by a translation of (0 3). WRITE DOWN the equation of the new graph

*February 3, 2016*

**Math**

Emily wants to make a regtangular model with a height of one connecting cube. she wants to make the model in exactly 2 different ways. how many connecting cubes could Emily use to make the model in only 2 ways. A6, B12, C16, D18

*January 12, 2016*

**Chemistry **

A chemical technician prepares Ni(NH3)6Cl2 by adding 4.55 g of solid NiCl2·6H2O to 25 mL of 6.0 M aqueous NH3. What is the maximum mass of Ni(NH3)6Cl2 that will be produced? how would I do this question?

*December 14, 2015*

**PHYSICS**

Hello?

*December 14, 2015*

**Chemistry**

I have to list distributed benzene in order of polarity, and I don't think i know how to do that, but does polarity have to do with dipole moments?

*December 9, 2015*

**Chemistry**

I just need someone to check over my answers, I'm pretty confident in all of them! In which six-membered hydrocarbon rings are all of the C-C-C angles roughly the same, i.e., within 1o? Select ALL that apply. Question 1 options: A)cyclohexane B)cyclohexene C)1,3-...

*December 9, 2015*

**Chemistry**

I've changed my answer for part one to a) N-O bond length in >>> 4 b) N-O double bond in NO2H >>> 1 c) N-O bond length in NO3- >>> 2 d) N-O bond length in NO2- >>> 3 e) N-O single bond in NO2H >>> 5

*December 8, 2015*

**Chemistry**

Draw the best Lewis structures for NO+, NO2-, NO2H, and NO3-. Based on the Lewis structures, list all of the the N-O bonds lengths in order of shortest (1) to longest (5). N-O bond length in >>> 2 N-O double bond in NO2H >>> 1 N-O bond length in NO3- >>...

*December 8, 2015*

**Chemistry**

NEVER MIND. it was hydrogen bonding, I didn't see the OH group

*December 7, 2015*

**Chemistry **

Identify the predominant intermolecular force in each of these substances. 1. Hydrogen 2. Dipole-Dipole 3. London A)H20 B)NH3 C)CH3 C=O OCH3 D)CH4 E)CH OH-C-OH CH3 what I have so far is A) 1 B) 1 C) 2 D) 3 E) I'm not sure about E, I think it might be dispersion?

*December 7, 2015*

**Critical thinking (Check)**

4. The newly elected Canadian government is planning on withdrawing Canada’s CF-18 jets from the allied bombing campaign against the Islamic State (aka ISIS, aka ISIL, aka Daesh) forces within Iraq and Syria. The Conservative opposition in Parliament is opposed to the ...

*December 6, 2015*

**Critical thinking**

what I was thinking was that the premises are good and the argument is good the conclusion is flawed because those mean it's a good class, but not necessarily the MOST important class

*December 6, 2015*

**Critical thinking**

the conductive argument is talking about critical thinking classes the premises are all separate premises leading to the conclusion P1. Critical thinking teaches the fundamentals of good reasoning. P2. Critical thinking helps people learn how to detect bad reasoning in the ...

*December 6, 2015*

**Critical thinking**

3. Consider the following conductive argument: P1. Critical thinking teaches the fundamentals of good reasoning. P2. Critical thinking helps people learn how to detect bad reasoning in the arguments they hear and read. P3. Critical thinking principles underlie all the academic...

*December 6, 2015*

**Critical thinking**

((Remember that for an inductive inference with linked premises to be valid the premises must be acceptable and they must be sufficient to render the conclusion probable. An assessment of inductive validity requires you to explain your reasons for weighing the evidence as you ...

*December 6, 2015*

**Critical thinking **

I have finished my assignment I just need someone to read it over and check my logic, please and thank you! 1. Read the following argument and answer the question that follows: 1. According to the 2010/11 Statistics Canada census aboriginal Canadians constituted 4.3% of the ...

*December 6, 2015*

**Philosophy**

If you have a inductive argument, and you're evaluating if the conclusion is valid or not, if you can figure out a different conclusion is it valid or not?

*December 6, 2015*

**math**

Can you tell me what, (in greatest to least) the order is... 1/2, 4/5, 5/6, 2/3 7/8, and 1/4. this will be greatly appreciated.Thx.

*December 3, 2015*

**math**

the spanish club is selling t-shirts and baseball caps as a fund raiser if the baseball cap cost $1.13 to make and sell the shirt for $5 how much profit does the club make for each shirt?

*November 29, 2015*

**PHYSICS**

A Solid Cube Of Steel Has Each Side 10cn Long.Find Its Mass If The Density Of Steel Is 6.5g/cm

*November 29, 2015*

**physics**

E.P=mgh M=0.5 G=10ms-2 H=1.8-1.3=0.5 E.P=0.5*10*0.5 E.p=2.5

*November 29, 2015*

**Chemistry **

1. In the lab you will be provided with 0.1 M sodium hydroxide that you will standardize using KHP. What is implied by writing the NaOH concentration as 0.1 M? a) After performing your standardization and calculations, any deviation from 0.1000 M is due to experimental error. ...

*November 24, 2015*

**Chemistry **

1. Which molecule should have the higher dipole moment, and why? a) COF2 because it contains more F atoms. b) COFH because the polar bonds in COF2 nearly cancel each other out. c)COF2 because it contains more lone pairs. >> I think the answer is a)?

*November 22, 2015*

**Chemistry **

Anthracene is a yellow, crystalline solid found in coal tar. Complete this structure for anthracene, C14H10, by adding bonds and hydrogen atoms as necessary. What type of hybrid orbitals are utilized by carbon in anthracene? >>sp3 How many σ bonds and π bonds ...

*November 22, 2015*

**Critical thinking **

I've seen these questions asked today/yesterday (and answered) but I just wanted someone to check over my answers to see if they make sense. 1. Assume that the conclusion of an argument is the claim: It is wrong to inflict suffering on animals. For each of the following ...

*November 22, 2015*

**Philosophy **

I've seen these questions asked today/yesterday (and answered) but I just wanted someone to check over my answers to see if they make sense. 1. Assume that the conclusion of an argument is the claim: It is wrong to inflict suffering on animals. For each of the following ...

*November 22, 2015*

**math**

21 boys, 21 girls. 7:5 - 6 girsl is 21 boys to 15 girls [think -6]

*November 19, 2015*