Thursday

February 11, 2016
Total # Posts: 88

**Science**

A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. How far does it travel? Write down the given, unknown, formula, solution, and the final answer.
*December 1, 2015*

**Math**

From 102nd floorˏ an observer spot his car at an angle depression of 5 degree.If the observer is 1250 feet high; how far is his car from him?
*November 23, 2015*

**math**

whats three to the third power
*September 14, 2015*

**math**

my homework saids express each phrase as a rate and and unit rate round to the nearest hundredth. 120 miles on 4 gallons of gas the ratio is 30 to 1 I have to write it in a rate and unit rate to the nearest hundredth.
*September 14, 2015*

**math**

When Cheryl goes mountain climbing, she rests 5 minutes every 15 minutes that she climbs.If Cheryl combined time is 2 hours, how many minutes does she rest? P.S I don't want the answer i just need to know the operation to solve this problem
*May 7, 2015*

**chemistry**

15.3 mol
*December 1, 2014*

**Chem**

The oxygen is a nucleophilic group
*December 1, 2014*

**CHEMISTRY**

10-9 or 10-5 bobpursely
*December 1, 2014*

**Chemistry**

1.293 mol/L
*December 1, 2014*

**chemistry**

599,9 mL
*December 1, 2014*

**Chemistry**

I think it is an error. Usually we have to get CO2 instead of C as it is a combustion reaction and in theory it is an exothermic reaction
*December 1, 2014*

**Science**

We are having a debate in Science class. We are each given two questions to debate each other. 1. The Climate is mainly influenced the by the sun? 2. The earth has been warmer in the past?
*October 5, 2014*

**AP US History**

Actually its his letter to the queen and king of Spain 1494
*August 28, 2014*

**AP US History **

Is columbus letter reliable(Reliability)? why or why not?What is the point of view?
*August 28, 2014*

**AP Calc. AB**

Thanks both of you!!!
*August 27, 2014*

**Acc. PreCalculus**

Sorry i meant to say six sided dice
*July 30, 2014*

**Acc. PreCalculus **

1.A boy has 5 vests and 3 jackets. How many outfits can he wear if he wears both a vest and a jacket?How many outfits can he wear if he wears either a vest or a jacket? 2.If you roll two sided dice what is the probability of getting a 9? What is the probability of getting a ...
*July 30, 2014*

**PreCalculus**

Sorry it's actually equal to 1 not 0
*July 30, 2014*

**PreCalculus **

y^2/25-x^2/9=0 What is the polar equation that is equivalent to the rectangular equation?
*July 30, 2014*

**Chemistry**

The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 21.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.
*May 8, 2014*

**Pre-calc**

2x^2 - 12x - 3y^2 - 24y +60 = 0
*April 2, 2014*

**social studies **

how was the south carolina constitution of 1868 different from earlier versions?
*April 2, 2014*

**Physic A Level **

A lift cable which is 50m long ,is made from high tensile steel of Young Modulus 2.0x 10^11 Pa. the cable is made from 100 wires each of radius 2.0mm . Calculate the extra extension in the cable when 10 passengers pile into the lift ,the total mass of the passenger is 500kg .
*March 14, 2014*

**physical**

A bicycle and its rider together has a mass of 95 kg. What power output of the rider is required to maintain a constant speed of 4.8 m/s (about 10.7 mph) up a 5.0% grade (a road that rises 5.0 m for every 100 m along the pavement)? Assume that frictional losses of energy are ...
*October 12, 2013*

**maths**

the solution set for the following 1.X3+x2-6x-10=0 2.2x2-4x-4=0 3.x4-x3-4x2+x+1=0
*October 8, 2013*

**physics**

a ball is thrown at a vertical velocity to an angle of 30 degree above the horizontal and rises to a maximum height of 50 meters.if the angle is tripled find the maximum height and the horizontal range of a projectile for the same intial velocity
*October 1, 2013*

**Organic chemistry plz help me out (thanks)**

1) a) What is the normail boiling point (760 mm Hg) for a compound that boils at 150 degree celsius at 10 mm Hg pressure? b) At which temperature would the compund in (a) boil if the pressure were 40 mm Hg? c) A compound was distilled at atmospheric pressure and had a boiling ...
*September 26, 2013*

**Science**

Yes the answers are b and c :)
*September 20, 2013*

**Science**

Yes the answers are b and c :)
*September 19, 2013*

**Health **

Ms.Sue can u please answer my question.
*September 4, 2013*

**Health **

I need to interview an adult about how health care changed in their lifetime. I don't have anyone to interview so can someone that is an adult can you please tell me how health care have changed. Medical Advances Changes in Cost Changes in the relationship with health care...
*September 4, 2013*

**Physics**

Thank you :)
*April 21, 2013*

**Physics**

What is the momentum of a wavelength= 0.015nm X-ray photon? p= in kg*m/s Please help I am confused. Thank you.
*April 21, 2013*

**Physics**

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. If the wavelength of the incident photons is doubled, what is the maximum kinetic energy of the ejected electrons? What is KEmax in eV. ...
*April 21, 2013*

**Physics Please COULD SOMEONE HELP ME ASAP PLZ**

When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried so many times i keep ...
*March 27, 2013*

**PHYSICS PLEASE SOMEONE HELP ME OUT **

When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried so many times i keep ...
*March 27, 2013*

**PHYSICS PLEASE HELP ASAP**

When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried so many times i keep ...
*March 27, 2013*

**PHYSICS PLEASE HELP ASAP**

I found this equation 5380di^2+600di+33000=0 and when i solve i got an imaginary number I had a hard time solving it so could you please help me out
*March 27, 2013*

**PHYSICS PLEASE HELP ASAP**

When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried so many times i keep ...
*March 27, 2013*

**pre calculus**

for the given function f and g, find the specified value of the function. State the domain: f(x)=2x-5; g(x)=7x-9 a. (f-g)(x)= b.(f/g)(x)= I need help!
*March 27, 2013*

**math pre calculus**

find the following for the function f(x)=(x+5)^2(x-2)^2 a.find the x and y intercepts, b.find the power function that the graph ressembles for large values of x c.determine the maximum number of turning points on the graph of f d.determine the behavior of the graph of f near ...
*March 26, 2013*

**math**

I don't know the and dick face and ass hole and bicth.................... I don't want to say the rest all you gonna do is cry
*February 22, 2013*

**MATH**

I don't know the answer bicth and a ass hole.
*February 22, 2013*

**chemistry HELP plz!**

Thanks!
*May 24, 2012*

**chemistry HELP plz!**

The species __________ contains 16 neutrons. a. 16O b. 31P c. 34S2- d. 80Br- e. 36Cl
*May 24, 2012*

**ELA**

We have to write a paper about seashells,sunglasses,and sunscreen My cousins and I went to the beach last summer and we brought things top lay with there like our beach ball and water guns then we put on our suncreen and sunglasses before going in the water.We played games in ...
*May 16, 2012*

**calculus**

3x^2+x+2=0
*April 12, 2012*

**calculus**

find a square root of -7-24i
*April 12, 2012*

**health**

I'm doing a health project on family. My question is how does your dad support you? I need ideas thank you
*April 11, 2012*

**help for homework **

can you correct that for me pleas? Have you ever sat in a classroom and observed the conversational styles of the students? Nowadays many people flying to another language because several reasons such as study , business, or even Tourism. However, When they travel to face ...
*March 2, 2012*

**algebra**

A poll estimates that 43% of likely voters are in favor of additional restrictions on teenage drivers. The poll has a margin of error of plus or minus 4%. Write and solve an absolute value equation to find the minimum and maximum percent of voters that actually support the ...
*September 28, 2011*

**math**

A poll estimates that 43% of likely voters are in favor of additional restrictions on teenage drivers. The poll has a margin of error of plus or minus 4%. Write and solve an absolute value equation to find the minimum and maximum percent of voters that actually support the ...
*September 28, 2011*

**psychology**

Tranquilizing drugs that inhibit sympathetic nervous system activity often effectively reduce people's subjective experience of intense fear and anxiety. Use one of the major theories of emotion to account for the emotionreducing effects of such tranquilizers. Which theory...
*September 24, 2011*

**math**

PLEASE HELP ME. 1/5 of bees flew to a cherry tree, 1/3 flew to a clover tree, and 3 times the difference of these 2 numbers buzzed over to a stand of heather. 3 flew around the hive circling and protecting the bee community. The question is, how many bees were there altogether?
*August 23, 2011*

**division**

uirt
*May 20, 2011*

**physics**

You are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 18-m-tall building and land on the ground safely at a final vertical speed of 5 m/s. At the edge of the building's roof, there is a 100-kg drum that is wound ...
*March 28, 2011*

**physics**

A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure. (a) What is the angular separation between the initial position of a fixed point on the rim of the flywheel and the point's position 8 s after the wheel ...
*March 20, 2011*

**physics**

A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 3 m and is undergoing circular motion in the horizontal plane, as shown in the figure. What should the speed of the mass be for θ to be 46°? What is the tension in the string?
*March 19, 2011*

**physics**

Two instruments are playing musical note "A" (440 Hz). A beatnote with a frequency of 2.5 Hz is heard. Assuming that one instrument is playing the correct pitch, what is the frequency of the pitch played by the second instrument?
*February 1, 2011*

**Chemistry**

Explain the important conditions when you crystallize a solid by crystallization.
*November 24, 2010*

**Biology**

Explain why would there be more white blood cells found in a person's body who is infected by salmonella bacteria rather than a healthy person?
*November 24, 2010*

**Physics**

The 2500 kg cable car shown in the figure below descends a 200 m high hill. In addition to its brakes, the cable car controls its speed by pulling an 1200 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are ...
*November 3, 2010*

**English-Their Eyes Were Watching God**

Why do you think Starks puts the street lamp on a showcase for a week and then throws a big celebration for its lighting ceremony?
*October 31, 2010*

**ChemISTRY (WEBWORK)**

A student measures the potential for cells containing A+B+and C+ ions and their metals and records his data in the table below: ............. Overall Reaction ................Potential (V) Cell#1'''''''A(s) A+(aq) B+(aq) B(s)'''''...
*July 14, 2010*

**Physics**

Suppose a charge q is placed at point x = 0, y = 0. A second charge q is placed at point x = 6.2 m, y = 0. What charge Q must be placed at the point x = 3.1 m, y = 0 in order that the field at the point x = 3.1 m, y = 4.2 m be zero?
*July 11, 2010*

**Physics**

A certain capacitor stores 360 J of energy when it holds 9.1 10-2 C of charge. (a) What is the capacitance of this capacitor? µC (b) What is the potential difference across the plates? V
*July 11, 2010*

**Physics**

Two metal spheres are separated by a distance of 1.1 cm and a power supply maintains a constant potential difference of 710 V between them. The spheres are brought closer to each other until a spark flies between them. If the dielectric strength of dry air is 3.0 106 V/m, what...
*July 11, 2010*

**math pre-ALG**

how to write 72,700 in word form
*June 8, 2010*

**Physics**

Is the total charge 3.0 x 10^-6 C?
*May 12, 2010*

**Physics**

How many electrons make up a charge of -30.0 ìC?
*May 12, 2010*

**PHYSICS**

Thank you so much! Makes perfect sense =D
*January 18, 2010*

**PHYSICS**

A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, the total force exerted on the driver has magnitude 115 N. What are the magnitude and direction of the total vector force exerted on the driver if the speed is 25.0 m/s ...
*January 18, 2010*

**PHYSICS**

A bolt drops from the ceiling of a train car that is accelerating northward at a rate of 3.15 m/s2. What is the acceleration of the bolt relative to the train car? I don't understand how to do this problem at all... and why isn't it zero? It seems if the train is going...
*January 7, 2010*

**PHYSICS**

super easy (I think) but I must be missing some concept... A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 5.00 times around the track. Find the angle that the total acceleration of the car makes with the radius ...
*January 6, 2010*

**alegbra**

2y + 1 < -3 -1 -1 2y < -4 divide each side by two y < -2
*February 24, 2009*

**8th Grade Algebra**

is the common solution then (7,4) ?
*February 24, 2009*

**8th Grade Algebra**

How can you tell if these three equations have a common solution? 3x - 5y = 1 4x - y = 24 2x - 3y = 2 Please help ?
*February 24, 2009*

**Chemistry**

oh ok, I solved it, thank you very much! :]
*February 23, 2009*

**Chemistry**

The element copper, found in nature with an average atomic mass of 63.54u, consists of two isotopes, copper-63 of atomic mass 62.93u and copper-65 of atomic mass 64.93u. Calculate the abundance of each isotope. I can't come up with an equation to solve it; can someone ...
*February 23, 2009*

**economics**

Provide a real-world example of a product (a good or service) that has either an external cost or external benefit associated with it and propose a government policy to adjust for the over- or underproduction of this product.
*November 18, 2008*

**economic**

Do a google search on the concept of a “flat tax.” Explain how this tax scheme works and does it meet the criteria of tax efficiency and tax fairness/equity?
*November 18, 2008*

**economics**

Assume that the demand for gasoline is inelastic. The government imposes a sales tax on gasoline. The tax revenue is used to fund research into clean fuel alternatives to gasoline, which will improve the air we all breathe. a. Who bears more of the excess burden of this tax: ...
*November 18, 2008*

**Math**

add. 4 1/7 + 1 1/2=
*October 26, 2008*

**business**

Congratulations! You have decided to start a new business! You will begin a partnership with one other business associate that you trust and have known for several years. You plan to hire three managers and another twenty employees. Discuss a plan of action that you and your ...
*September 4, 2008*

**economics**

i agree
*February 21, 2008*

**Economics**

Economic profit that is less than zero
*June 20, 2007*

**math**

How do i relate lunch cost L and number of riders n
*October 3, 2006*

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