Thursday

February 11, 2016
Total # Posts: 257

**Physics**

A 10.5 g bullet is fired into a 104 g wooden block initially at rest on a horizontal surface.The acceleration of gravity is 9.8 m/s2. After impact, the block slides 6.66 m before coming to rest.If the coefficient of friction between block and surface is 0.658 , what was the ...
*January 17, 2016*

**Physics**

Thank you so much!!
*November 29, 2015*

**Physics**

Alex is exploring a cave that has a slight incline and is iced over, forcing her to use ice cleats to explore it. After climbing 50 m into the cave, she finds what she is looking for and she takes out her ice pick and hammer to begin removing the stones. Little does she know ...
*November 29, 2015*

**Math**

I think it was suppose to be (-3,-3) not (-3,3)
*November 13, 2015*

**math**

Hector keep close tabs on his bank account. His account had a balance of -$22.80. The next day, he made a deposit of $56.60. His account balance changed to $.
*November 9, 2015*

**English**

Which part of “The Maori: Genealogies and Origins in New Zealand” best shows that the Maori value freedom?
*October 30, 2015*

**Chemistry**

Charcoal is primarily carbon. What mass of CO2 is produced if you burn enough carbon (in the form of charcoal) to produce 4.85×102kJ of heat? The balanced chemical equation is as follows: C(s)+O2(g)→CO2(g),ΔH∘rxn=−393.5kJ
*October 26, 2015*

**Math**

How would you write cos(tan^-1u) as an algebraic expression in u? I know the answer, and I've seen tutorial on how to do it using pathagorus, but how would you do this using identities?
*October 20, 2015*

**math**

I Dont know
*October 8, 2015*

**English**

Genre winthin a genre.
*September 21, 2015*

**Science**

How are the types of ER related to the cell type?
*September 7, 2015*

**Science**

How does the cisternal space divide the cell?
*September 7, 2015*

**genetics**

We have dealt mainly with only two genes, but the same principles hold for more than two genes. Consider the following cross: A/a ; B/b ; C/c ; D/d ; E/e × a/a ; B/b; c/c ; D/d ; e/e a. What proportion of progeny will phenotypically resemble (1) the first parent, (2) the...
*August 31, 2015*

**Ochem**

Which of the following is NOT a proper name for an organic compound (because it doesn't identify the longest possible carbon chain)? 2-methylpentane 3-methylpentane 2-ethylhexane 2,3-dimethyl butane
*August 30, 2015*

**biology**

What types of amino acids and domains are found in the "transmembrane" region of these proteins?
*August 30, 2015*

**Biology**

How does the "Patching and Capping" experiment verify the fluid concept of the Fluid Mosaic model?
*August 30, 2015*

**Ochem**

Most fatty acids with double bonds are found in animals or plants? Are these fatty acids solid or liquid at room temperature?
*August 30, 2015*

**OChem**

A disaccharide has how many monomers? I think it is two?
*August 30, 2015*

**Cell Biology**

If three amino acids are bonded together linearly, how many molecules of water are produced?
*August 23, 2015*

**SS**

I'd say thats correct! Do you go to Connections Academy?
*May 6, 2015*

**english grammar**

You are correct
*May 4, 2015*

**English**

Well, What emotion do you feel when you tell someone you love them for the first time?
*May 4, 2015*

**math**

A new car is purchased for the price of $35,000. If the value of the car depreciates at a rate of 12% per year, when will the car be worth half of the original rate? I put down (this was wrong): 35000 (0.12/12) = 75000 350 (0.12/12) 175 = 612.5 = about 6 years
*May 4, 2015*

**Physics**

Given an object distance of 48[mm] and a thin-lens focal length of 110[mm], then what is the image distance? What is the scale factor (M) of the image seen in the previous question?
*May 3, 2015*

**Math**

Ohhhh okay. So it's D
*April 28, 2015*

**Math**

do this values in the table represent a linear function? If so what is the function rule? X -2. 0. 2. 4 Y -4. 0. 4. 8 A) the values do not show linear function B) yes they show y=1/2x+4 C) yes they show y=2x+2 D) yes they show y=2x My answer: C or D?
*April 28, 2015*

**Physics**

How would an astronomer use index of refraction?
*April 22, 2015*

**English/Sociology**

Im looking for some media examples of how women who don't want kids are perceived by society... one example I have is How I Met Your Mother, where one of the main characters Robin doesn't want kids..... Can anyone think of any other examples? Thanks!
*April 15, 2015*

**Sociology**

Thank you i will look into that!
*April 14, 2015*

**Sociology**

I thought about that, but she eventually ends up having kids so I don't think that will work for what I'm looking for. I will look into it though, Thank you!
*April 14, 2015*

**Sociology**

Im looking for some media examples of how women who don't want kids are perceived by society... one example I have is How I Met Your Mother, where one of the main characters Robin doesn't want kids..... Can anyone think of any other examples? Thanks!
*April 14, 2015*

**physics**

If 50 g of ice at −5 ◦C is mixed into 300 g of water at 60◦C in a completely insulated container, what is the final equilibrium temperature of the water? Why did we insist on the container being completely insulated?
*March 29, 2015*

**physics**

A spherical buoy of radius 25 cm and mass 8 kg sits in sea water of density 1025 kg/m3 . At low tide its anchoring chains have got tangled. What is the maximum tension force this chain may have to withstand at high tide? Assume calm conditions.
*March 29, 2015*

**Physics help**

Describe each type of item tested in terms of its V vs I being "Ohmic" or not. Use one sentence per item-type tested. Item types tested are Resistors, Coil, Diode, Capacitors, and Light Bulb.
*February 25, 2015*

**physics**

The coefficients of static and kinetic friction between a 43 kg box and a horizontal surface are 0.72 and 0.20, respectively. (a) What is the acceleration of the object if a 135 N horizontal force is applied to the box? (b) What is the acceleration if the applied force is 480 N
*February 23, 2015*

**Ecology**

under what conditions might phenotypic plasticity not evolve and why
*February 8, 2015*

**georaphy**

What state is located 20 degrees north latitude and 160 degrees west longitude:-)
*February 2, 2015*

**physics**

An 94.4 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 29.6 m behind the ship, at rest relative to the spaceship. The only way to return to ...
*January 25, 2015*

**physics**

A 24.0 g marble sliding to the right at 60.8 cm/s overtakes and collides elastically with a 12.0 g marble moving in the same direction at 15.2 cm/s. After the collision, the 12.0 g marble moves to the right at 76 cm/s. Find the velocity of the 24.0 g marble after the collision.
*January 25, 2015*

**physics**

A 2100 kg car traveling at 12.0 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 3.90 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the road, assuming that ...
*January 25, 2015*

**Math**

A student borrowed $19,000 at an annual interest rate of 6.4%. Calculate the amount of interest due 3 months after the student has begin making payments
*December 9, 2014*

**Chemistry- URGENT please HELP**

NH4NO3(s)+H2O(l)→NH4NO3(aq) ΔH = +25.7 kJ. What is the final temperature in a squeezed cold pack that contains 49.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/(g⋅∘C) for the solution, an initial temperature of 28.5∘C, ...
*November 17, 2014*

**Algebra**

Find the complex zeros of the following polynomial function. Write f in the factored form. F(x)=2x^4-5x^3-20x^2+115x-52
*October 19, 2014*

**Statistics**

1 in 7750
*October 15, 2014*

**Algebra Help**

I think the center is (16/11,79/11) can anyone confirm this? also i think the radius is -2?
*September 24, 2014*

**Algebra Help**

How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) I also found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the perpendicular bisector of the line between the second...
*September 24, 2014*

**Algebra! please help **

x^2+y^2+x-6y+9=0 Graph the circle using the center (h,k) and radius r. find the intercepts
*September 17, 2014*

**algebra**

It doesn't show you the steps though?
*September 17, 2014*

**algebra**

x^3-9x+1=0
*September 17, 2014*

**grammar**

How do I diagram the sentence "There were ten visitors here yesterday", especially the word "there"
*September 9, 2014*

**Algebra**

Thanks Steve!
*August 24, 2014*

**Algebra**

which is?
*August 24, 2014*

**Algebra**

find all points having an x-coordinate of 4 whose distance from the point (1,5) is 5
*August 24, 2014*

**NCCU**

11. What mass of sodium benzoate should be added to 160.0mL of a 0.17M benzoic acid solution in order to obtain a buffer with a pH of 4.30?
*June 21, 2014*

**Science Please Help Me**

Actually. Only 16 out of those 23 are right. I wouldn't trust it
*June 3, 2014*

**algebra**

A single card is drawn from a standard deck of cards. Find the probability if the given information is known about the chosen card. A face card is a jack, queen, or king.
*May 26, 2014*

**Algebra 2**

if an object is thrown vertically upward with an initial velocity of v from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s (where h and s are in ft t is in seconds and v is in ft/sec) If a rock is thrown upward from a height of 100ft, with an ...
*April 23, 2014*

**Chem**

THANKS. I figured it out.
*March 12, 2014*

**Chem**

how do i find the rate constant?
*March 12, 2014*

**Chem**

i got N=0.83 does the seem right?
*March 12, 2014*

**Chem**

suppose that you place exactly 100 bacteria into a flask containing nutrients for the bacteria and that you find the following data at 37 °C: t (min):0 15.0 30.0 45.0 60.0 Number of bacteria: 100 200 400 800 1600 What is the order of the rate of production of the bacteria...
*March 12, 2014*

**chemistry**

Hey Guys so I have this problem with ICE tables that is extremely confusing for me so I would love some help on it! At a Certain Temperature, the equilibrium constant for the reaction of NO with Cl2 is 6250. If the initial concentration of NOCl is 1.0M and that of NO 0.10M ...
*March 7, 2014*

**Spanish 2**

@SraJMcGin Was #2 correct also? Thanks! :)
*March 6, 2014*

**Spanish 2**

Fill in the blank with the correct imperfect form of the verb. Include accent marks when needed. 1.) Mis amigos______la playa. (ir) 2.) Mama______la casa. (limpiar) 3.) Mi hermano y yo____la leche.(beber) 4.) Yo_____la cena. (preparar) 5.) ¿Tú_____los libros? (...
*March 6, 2014*

**spanish 2**

Fill in the blank with the correct imperfect form of the verb. Include accent marks when needed. 1.) Mis amigos______la playa. (ir) 2.) Mama______la casa. (limpiar) 3.) Mi hermano y yo____la leche.(beber) 4.) Yo_____la cena. (preparar) 5.) ¿Tú_____los libros? (...
*March 5, 2014*

**Chem 2**

Thanks so so much! I was really confusing myself! The steps really helped!
*February 21, 2014*

**Chem 2**

Im sure i did this wrong but this is what i did deltaT=Kfm m=mols solute/ kg solvent 1.56g vitamin k/83.8g= 0.019 m=0.019/ 0.025 = 0.76
*February 21, 2014*

**Chem 2**

when Im getting my Kf do i change it from Celsius to Kelvin before i do my calculation?
*February 21, 2014*

**Chem 2**

Vitamin K is involved in normal blood clotting. When 1.56 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 5.23 °C. . Calculate the molar mass of vitamin K. I posted this yesterday but I got the wrong answer and could use ...
*February 21, 2014*

**Chem 2**

When i did the problem i got 0.76 but i think its wrong?
*February 20, 2014*

**Chem 2**

Vitamin K is involved in normal blood clotting. When 1.56 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 5.23 °C. . Calculate the molar mass of vitamin K.
*February 20, 2014*

**Chem 2**

When 3.89 g of a nonelectrolyte solute is dissolved in water to make 835 mL of solution at 26 °C, the solution exerts an osmotic pressure of 825 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of ...
*February 20, 2014*

**algebra**

the larger of two numbers is 12 mo're than the smaller.Their sum 84. Find the numbers.
*January 31, 2014*

**math**

Pre-Cal between 0 degree C and 30 degree C the volume V (in cubic centimeters) of 1kg of water at a temperature T is given by the formula. V=999.87-0.06426T+0.0085043T^2-0.0000679T^3 Find the temperature at which the volume of 1 kg of water is a minimum.
*January 28, 2014*

**Science-bobpursley/Ms.Sue**

Don't break the honor code but i can help explain a little try looking up to see if the fossils under the trilobite is older than you will know
*December 12, 2013*

**Science-Ms.Sue**

what about number 4 is tat also d i am trying to understand evolution much better.
*November 24, 2013*

**algebra**

what is negative one sixth times two and three fourths
*June 30, 2013*

**Math**

write an expression equivalent to -1/4(8y-10)
*June 1, 2013*

**Algebra**

Hi, can I have some help with my permutation/combination homework? "Find the number of 5-card hands that contain the cards specified." 1. five red cards 2. five cards, none are number cards 3. five cards of the same suit
*May 29, 2013*

**us history**

Why did Johnson request the Tonkin Gulf Resolution
*April 15, 2013*

**College Statistics**

yes
*March 30, 2013*

**Math- PLEASE HELP**

Ok I corrected my mistake and got that it would cost $51.48, because it was 15 gallons she needed to get. Is this correct now? Thank you
*March 17, 2013*

**Math- PLEASE HELP**

MS Wilkens went to the gas station to fill her car. Her gas tank is 20% full. The cost of gas is $4.29 per gallon. How much will itcost to fill the tank? Use the conversion 1 gallon=231 in cubed. They showed a pic. of a tank with length=1.75ft width=1.25 ft height=11 in I did ...
*March 17, 2013*

**pre cal**

If (a, b) is a point on the unit circle that corresponds to the angle t, then tan(t) equals:
*February 17, 2013*

**Expand binomial Pascal's triangle **

(p+q)^9
*January 17, 2013*

**Statistics**

318
*January 7, 2013*

**statistics**

your teacher has invented a fair dice game to play. your teacher will roll one fair eight sided die and you will roll a fair six sided die. each player rolls once and the winner is the person with the higher number. in case of a tie neither player wins. a. let A be the event &...
*January 6, 2013*

**chemistry**

In the following reaction, how many grams of ferrous sulfide (FeS) will produce 0.56 grams of iron (III) oxide (Fe2O3)? 4FeS + 7O2 d 2Fe2O3 + 4SO2
*December 6, 2012*

**physics **

A small child has a wagon with a mass f 10 kilograms (KG). The child pulls on the wagon with a force of 2 newtons (N). What is the acceleration of the wagon?
*December 4, 2012*

**Chemistry**

Balance the following equations: A. N2O>N2+O2 B. HBr>H2+Br2 C. CH4+O2>CO2+H2O
*November 28, 2012*

**Chemistry**

What is C2H5OH+3O2>CO2+H2O balanced?
*November 28, 2012*

**CALCULUS**

what is the area in square units of the region under the curve of the function f(x)=x+3, on the interval from x=1 to x=3? 10 12 14 16 18 ?
*November 27, 2012*

**Physics, science, **

I'm desperate Please help 2. A bird, starting from rest, accelerates at 3 m/s2 north for 5 seconds. It then sees the rest of its flock and turns due east accelerating from its previous speed to 20 m/s in 2 seconds. A. What is the velocity of the bird after the initial leg...
*October 12, 2012*

** Thanks**

Thanks Deborah i needed help.
*October 9, 2012*

**Trig**

A 16 - foot ladder leaning against the side of a house reaches 12 feet up the side of the house. What angle does the ladder make with the ground
*September 23, 2012*

**Math**

how did u get 16,000?
*September 20, 2012*

**Math**

Can I have the math to it please.
*September 20, 2012*

**history**

thanks !? lol
*September 19, 2012*

**history**

2 big important facts about the 13 amendment.
*September 19, 2012*