Wednesday

October 7, 2015
Total # Posts: 198

**Physics**

A motorist traveling with a constant speed of 15m/s passes a school-crossing corner, where the speed limit is 10m/s. Just as the motorist passes, a police officer on a motorcycle at the corner starts off in pursuit with constant acceleration of 3m/s^2. (a)How much time elapses...
*June 29, 2012*

**Physics**

Thank you. I got now the answer. :)
*June 22, 2012*

**Physics**

A jogger runs 145m. in a direction 20.0 degrees east of north (displacement of vector A) and then 105m. in a direction 35.0 degrees south of east (displacement of vector B). Using components, determine the magnitude and direction of the resultant vector C for these two ...
*June 22, 2012*

**math**

(-(4 to the 6)) divided by (-(4 to the 3)) = 64
*May 30, 2012*

**pre algebra help**

Well what info do you have? You have the height and volume. What formula does those fit into? V = (1/3) (pi) (r^2) (h) AKA Volume = 1/3 pi r squared multiplied by height SO. Plug in your numbers, 92.4 = 1/3 (pi) (r^2) 10 Now you want diameter, so r x 2 works as well since ...
*May 30, 2012*

**Introduction to Psychology**

short-term memory loss. :D
*May 30, 2012*

**Related rates**

i'm sorry, this is about optimization problems.
*May 20, 2012*

**Related rates**

A piece of wire 10 feet long is cut into two pieces. One piece is bent into the shape of a circle and the other into the shape of the square. How should the wire be cut so that the combined area of the two figures is as small as possible?
*May 20, 2012*

**related rates**

After blast-off, a space shuttle climbs vertically and a radar-tracking dish, located 1000 meters from the launch pad, follows the shuttle. How fast is the radar dish revolving 10 sec after blast-off if at that time the velocity of the shuttle is 100 m/sec and the shuttle is ...
*May 20, 2012*

**calculus**

thanks a lot!
*May 20, 2012*

**calculus**

Find the dimensions of a rectangle with perimeter 100m. whose area is as large as possible.
*May 20, 2012*

**calculus**

thanks guys!
*May 20, 2012*

**calculus**

i hope i got it right. The two numbers are 10 and 10?
*May 20, 2012*

**calculus**

Find two positive numbers whose product is 100 and whose sum is a minimum.
*May 20, 2012*

**calculus**

limit of ln(sin x) as x approaches pi to the left
*May 20, 2012*

**calculus**

The sum of two positive numbers is 100. Let one of the numbers be x and express the product P of the two numbers as a function of x.
*May 20, 2012*

**calculus**

thank you so much. :)
*May 20, 2012*

**calculus**

A rectangle has a perimeter of 10 meters. Express the area A of the rectangle as function of the width x.
*May 20, 2012*

**relaited rates**

thank you. :) you really did a big help. Godbless
*May 15, 2012*

**relaited rates**

uhm, just one more thing. Isn't it 5/144π ? :)
*May 15, 2012*

**relaited rates**

thank you so much! :)
*May 15, 2012*

**relaited rates**

A spherical balloon is being inflated so that its volume is increasing at the rate of 5 cubic meter per minute.At what rate is the radius increasing when the radius is 6 meters?
*May 15, 2012*

**Related rates**

thank you so much. :) you really help me a lot. Godbless!
*May 14, 2012*

**Related rates**

I'm very thankful for being kind to me. Last one thing, 8 meters is the height of the conical pile. Does it also mean that it is the same as the height of the sand?
*May 14, 2012*

**Related rates**

Thank you for answering my question. I just can't understand how it come up to the equation 10=2Π(64)dr/dt. I will be very thankful if you elaborate. :)
*May 14, 2012*

**Related rates**

Sand is being dropped at the rate of 10 cubic meter per minute onto a conical pile. If the height of the pile is always twice the base radius, at what rate is the height increasing when the pile is 8 meters high?
*May 14, 2012*

**english 11**

DBDBD. Just took the same quiz.
*March 9, 2012*

**6th Grade History**

i think your right with that answer
*March 5, 2012*

**Trigonometry**

Find the angle of elevation of the sun when a tree that is 10 yd tall cast a shadow 14 yds long
*March 5, 2012*

**Trigonometry**

A lookout spots a fire from a 36 meter tower the angel of depression from the tower to the fire is 21 degrees . To the nearest meter how far is the fire from the base of the tower
*March 5, 2012*

**Trigonometry**

an airplane over the pacific sights an atoll at a 11 degrees angel angle of depression. if the plane is 410 m above water how many kilometers is it from a point 410 m above the atoll
*March 5, 2012*

**Trigonometry**

a 30 feet ladder resting against a building makes a 60 angle with the ground . find the Height from the ground at which the ladder touches the building to the nearest foot
*March 5, 2012*

**Trigonometry**

Liola drives 13 km up a hill that is at a grade of 10 Degrees what horizontal distance to the nearest tenth of kilometer has she covered
*March 5, 2012*

**Trigonometry**

A side 2.8m long makes an angle of 25 degrees with the ground how high is the top of the slide above the ground .
*March 5, 2012*

**gemotry**

On a sunny day object A has a shadow of length 3 meters and a meter stick has a shadow 1.5 meters while object b has a shadow of length 6 meters how tall is object A AND B
*March 5, 2012*

**geometry**

Marc is visiting washington dc he wants to know the height of the washington monument the length of the monument shadow is 111 feet long at the same time that marcs shadow is 1 foot long Marc is 5 feet tall using this data find the height of the monument
*March 5, 2012*

**Medical Coding 2**

FINAL TAKE 882.0 890.0 881.0 12042 12004 E000.8 E001.1 E849.0 E888.0 E920.9
*February 8, 2012*

**Medical Coding 2**

FOR 2ND CPT 12002 CPT 12004
*February 8, 2012*

**Medical Coding 2**

for 2nd E001.1 E849.0 E888.0 E920.9
*February 8, 2012*

**Calculus (Parts A and B done, just help with C)**

Given: dr/dt = 0.05 m/s V = 4/3 πr³ dV/dt = 4πr² (dr/dt) A = 4πr² dA/dt = 8πr (dr/dt) - - - - - - - - - - - - - - - First question: What is dV/dt when r = 12? dV/dt = 4π(12 m)² (0.05 m/s) dV/dt = 28.8π m³/s dV/dt ≈ ...
*January 17, 2012*

**Calculus (Parts A and B done, just help with C)**

dr/dt = .05 v = (4/3)pi r^3 dv/dt = (4/3)pi(3) r ^2 (dr/dt) <---- this step is where the mistake was. you needed to have differentiated the volume with respect to time. to do this use the power rule on the right side. the derivative of (4/3)pi r^3 is (4/3)pi(3) r ^2 (dr/dt...
*January 17, 2012*

**Calculus ~ Related Rates**

-10/3
*January 5, 2012*

**Calculus**

Okay, letting x be height and b radius of smaller, then x/b=h/r, and volumeof smaller is 1/3pi(h-x)b^2, or 1/3pi(h-x)(x^2r^2/h^2= 1/3pi((x^2r^2/h)-(x^3r^2/h^2). Now differinate with respect to x, and set to 0, so ((2xr^2/h)-(3x^2r^2/h^2)=0, so you get x=2/3h. So, fraction is...
*December 16, 2011*

**Chemistry**

How many grams of CO are needed to react with an excess of Fe2O3 to produce 233.4 gFe? Fe2O3 (s) + 3CO (g) --> 3CO2 (g) + 2Fe (s)
*December 11, 2011*

**Chemistry **

If 26.4 L of H2 reacted with 13.2 L of O2 at STP, what is the volume of the gaseous water collected assuming that none of it condenses?
*December 11, 2011*

**geometry**

the ratio of the area of a smaller triangle to the area of a larger triangle is 1:4. if the are of the smaller triangle is 30, find the area of the larger triangle.
*November 8, 2011*

**MATH**

4*3*2*1*3 there are 4 possibilities for the first space... so u only have 3 options for the fifth spot because 1 car has already parked... now since two cars have parked in the first and last spots you have 3 cars out of the five that can still park.. so 3 can park in the ...
*July 27, 2011*

**english**

A. communist B. guerillas C. Marxist
*June 10, 2011*

**math**

Thanks helped a lot
*April 8, 2011*

**math**

_ _ < 50 12 and 24 It's mental math.
*March 28, 2011*

**physics**

A 0.46 kg object connected to a light spring with a spring constant of 18.0 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. unit = cm/s (b) Determine the speed of the mass...
*March 22, 2011*

**Science**

How do you reverse the expirement of a Iron Nail which is placed into a cup of Copper Sulfate????
*March 17, 2011*

**HiSTORY ....helpppppp **

YEllow journalism was important because it was a business move for the newspapers. By makiing the war more exaggerated in the media, it sold more newspapaers.
*March 13, 2011*

**physics**

Figure 6-43 shows a "conical pendulum", in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.060 kg, the string has length L = 0.90 m ...
*December 5, 2010*

**history**

Im on my school laptop and its not letting me get through to the links.
*October 25, 2010*

**history**

how do you think the Emancipation proclamation will affect people’s attitudes towards the war?
*October 25, 2010*

**Physics**

HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHHAHAHA
*October 6, 2010*

**Grade 9 science: ecology**

They share cellular respiration but dint share photosynthesis
*September 20, 2010*

**algebra**

find algebraically the equation of the axis of symmetry and the coordinates of the vertex of the parabola whose equation is y=-2x^2-8x+3. explain the steps please. :)
*June 4, 2010*

**algebra**

(1) x^2 (2) x^9 (3) 4x^2 (4) 4x^9
*June 3, 2010*

**algebra**

in simplest form?
*June 3, 2010*

**algebra**

what expression represents (2x^3)(8x^5)/4x^6?
*June 3, 2010*

**science!!**

The element in an incandescent light bulb that releases light energy is _____. I think its C a thin tungsten filament. Am i right? below are the choices: A.a phosphor B.mercury vapor C.a thin tungsten filament D.a thick tungsten filament
*June 2, 2010*

**math**

I think its 63 miles per hour. How i got it: 12 hrs. minus 7 hrs. = 5hrs for the return trip. 45*7= r*5 315==r*5 315/5 = 63 miles per hour (i think that 63 is the answer. im not sure)
*May 31, 2010*

**science**

Hi it's me again. I realize that my last question didn't make much sense, so I will try to explain it again. Her it goes..... A long time ago the Mayans predicted that it took so many days( years even) for the sun to orbit the jupiter. This was without any sort of ...
*April 12, 2010*

**science**

I remember hearing something about how the Mayans predicted that it took so many days for the sun to orbit the sun and then Nasa recently figure out that they were only slightly off. Does anyone know about this? Thanks
*April 12, 2010*

**PLZ HELP!!!! communication**

THE ANSWER IS; False of course! :) Selective listening DOES focus on the most important parts of a message, but it isn't always effective!
*April 4, 2010*

**home economics**

macro nutrients = protiens,fat micro nutrients =minerals & vitamins
*January 14, 2010*

**algebra**

x(-2x-8) uqh help ! i fiqured it would just be -2x-8x but nopee
*January 7, 2010*

**math**

he came out wet
*December 11, 2009*

**displacement...**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...
*October 22, 2009*

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...
*October 22, 2009*

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...
*October 21, 2009*

**word.**

What are the three sections of the Mail Merge Helper dialog box?
*October 21, 2009*

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...
*October 21, 2009*

**word.**

thanks(:
*October 21, 2009*

**word.**

What are the steps in creating a drop cap two lines tall?
*October 21, 2009*

**science**

A sailboat sails west from port for 5.3 km and experiences a shift in the wind direction. The wind blows the sailboat 2.5 km south. What is its displacement from its original position? a^2+b^2=c^2 5.3^2+2.5^2=5.86^2 I just cant figure out the direction...
*October 21, 2009*

**Healthcare**

People on this website are so mean to each other wow.I thought it was to help not to fight about who can and cannot read a text book. Some like myself sometimes have a harder time understanding the text because you do not have a person in front of you explaining everything. ...
*June 4, 2009*

**PRE*******ALGEBRA**

the answer is the answer.
*April 30, 2009*

**5th grade math**

lol nice 1 madison
*April 23, 2009*

**5th grade math**

when ur subtracting you kinda just add lol i hate this too madison!
*April 23, 2009*

**7th grade**

yeaaahhh what she saiddd lol
*February 6, 2009*

**maths plz help me**

you add the numbers next to x and multiply 5×360 so it will be : x + 1450 = 1800 subtract both sides x + 1450 - 1450 = 1800 - 1450 x = 350 :)
*November 9, 2008*

**Physics**

Square root.
*May 1, 2008*

**algebra**

yo momma foooollllll.
*March 11, 2008*

**drivers ed**

haha nevermind ill find it out tomorrow........mine isn't that important
*December 5, 2007*

**drivers ed**

i have been working on this forever...and i cant figure it out...but its on motorcycle safety...and its two words...but it contains aeehhossvy...and ithink its an article of clothing but other than that i have no idea......cause everything else i've solved has been clothing
*December 5, 2007*

**Math(Geometry)**

number 15 is money... george 1 dollar bill, thomas 5 dollar bill, abe 10 dollar bill, alexander 20 dollar bill, then is andrew jackson 50 dollar bill, and then ulysses grant 100 dollar bill
*August 22, 2007*

**math**

A chemist has 80 pints of a 20% iodine solution. How many pints of iodine must be added to produce a solution that is 33.1/3% iodine? Please help me work this through Let X be the number of pints of iodine that must be added. You start out with a mix that contains 16 pints of ...
*March 2, 2007*

**math**

How do you solve these types of problems? What is the remainder when 732^500 is divided by 10? The remainder of a division problem is the same as its modulo. 732^500 % 10 = the remainder what is modulo? and what do I need to do to solve this?
*March 2, 2007*

**math**

The population of Norson, the largest city in Transitania, is 50% of the rest of the population of Transitania. The population of Norson is what percent of the entire population of Transitania? Assume there are 100 people in Transitania.
*March 2, 2007*

**math**

12/7 .......i think
*February 4, 2007*

**the big idea of energy**

The idea is that the molecules have a lot of heat energy and so they are banging into eachother and if they bang with enough energy they join together.... hope this helped!!! :)
*December 5, 2006*

**microeconomics**

we also have the same problem...
*August 31, 2006*

**Chemistry Suspension Examples...**

hydrate
*June 15, 2005*