Wednesday

May 27, 2015

May 27, 2015

Total # Posts: 1,192

**Physics**

During 200 meter and 400 meter races, runners must stay in lanes as they go around a curved part of the track. If runners in two different lanes have exactly the same speed, will they also have exactly the same centripetal acceleration as they go around a curve? Explain.
*January 21, 2013*

**Chemistry**

How many types of stoichiometry are there? Can you list them? Thanks I appreciate it!
*January 14, 2013*

**Chemistry**

A sample of gas occupies 24.5 L at a pressure of 1.57 atm; what is the pressure if the volume is increased to 48.3 L?
*January 9, 2013*

**QUESTION**

can you please describe the chinese new year? and how its celebrated?
*January 6, 2013*

**living enviornment**

What structure is involved in carrying out each of the following life activities in the paramecium: A.INGESTION- B.DIGESTION- C.TRANSPORT- D.EXCRETION- E.WATER BALANCE- F.LOCOMOTION- G.REPRODUCTION- PLEASE HELP ME OUT
*January 2, 2013*

**Pre algebra**

5.4=y-1.5.+2.3
*January 2, 2013*

**Math...Please Help!**

Triangle ABC has coordinates A(1, 4); B(3, –2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis.
*December 21, 2012*

**Biology**

I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of island biogeography. How do I know what small habitats exist around my house? I live with in...
*December 11, 2012*

**Physics**

A pendulum with a length of 2.0 m has a period of 2.8 sec. What is the period of a pendulum with a length of 8.0 m?
*December 7, 2012*

**ECE**

It is A. If you do not establish a plan of discipline then you job is pointless.
*December 7, 2012*

**calculus**

thank you!
*December 6, 2012*

**calculus**

Use left endpoints and 9 rectangles to find the approximation of the area of the region between the graph of the function cos2x and the x-axis over the interval [0, pi/2] . Round your answer to four decimal places.
*December 6, 2012*

**algebra**

a large group of students want to go to the movies. if the students take 3 vans and 1 car they can transport 22 people. if they take 2 vans and 4 cars. they can transport 28 people.write and solve a system of equations to find the number of people that can be transported in a ...
*December 4, 2012*

**Algebra**

domain is 4
*December 4, 2012*

**Physics**

A 155 N force is applied to the end of a 40 cm wrench at a angle of 45 degrees to the handle. What is the torque?
*December 4, 2012*

**Math**

-6(7x-1)<-8x+9(3x-4)
*November 26, 2012*

**Business Short Essay**

Thank you so much!
*November 24, 2012*

**Business Short Essay**

How should I start of a one page written assignment on the marketing failure of a company? What should the first paragraph include?
*November 24, 2012*

**Business / Marketing**

Thank you so much! Does RIM count as a market failure? Like.. its close to one I think.
*November 23, 2012*

**Business / Marketing**

What corporation/company recently had a market failure in 2012.. at least from September to now? I need one for my assignment, but can't think of find any.
*November 23, 2012*

**Math**

The depreciation rate, r, for a $50,000 news car is given by the function r = 1 - (V/50,000)^(1/5), where V is the value of the car when it is five years old. a) What is the depreciation rate for a $50,000 BMW that is worth $28,000 after 5 years? (I already found the answer to...
*November 22, 2012*

**math- unit rate**

what is the unit rate for 18:1.25
*November 15, 2012*

**health**

i think its a?
*November 9, 2012*

**health**

What is stress management? A. Controlling and reducing the tension that occurs in stressful situations B. Controlling and reducing the tension that occurs in peaceful situations C. Controlling and reducing the happiness that occurs in peaceful situations D. Controlling and ...
*November 9, 2012*

**health**

Question 11 of 20 5.0 Points Regular physical activity appears to reduce symptoms of ________ for children and adolescents. A. Anxiety and depression B. Low self-esteem C. Identity or role confusion D. All of the above i think it is b?
*November 8, 2012*

**Physics**

For a single movable pulley with a mechanical advantage of 2, how much rope must be pulled to lift a 150 neuton load 2 meters above the ground?
*November 7, 2012*

**physics**

a jet plane traveling at +87 m/s lands on a runway and comes to rest in 11 s. a)Calculate its uniform acceleration b)Calculate the distance it travels
*November 6, 2012*

**math**

1 5/8
*November 6, 2012*

**math**

1 5/6
*November 6, 2012*

**math**

3 1/2 + 2 5/8 -4 1/4=
*November 6, 2012*

**math**

4 3/4 +3 1/2
*November 6, 2012*

**math**

help me! 2 3/5 + 1 4/5=
*November 6, 2012*

**Physics- PLEASE HELP**

When I followed that i got .26 meters and i think that is too small, right?
*November 6, 2012*

**Physics- PLEASE HELP**

A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 69.0 kg, length = 2.80 m, the ladder’s mass to be 21.0 kg, θ = 57.0°, and the coefficient of friction between ...
*November 6, 2012*

**Physics- PLEASE HELP**

A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 69.0 kg, length = 2.80 m, the ladder’s mass to be 21.0 kg, θ = 57.0°, and the coefficient of friction between ...
*November 6, 2012*

**Physics**

FOr my Tension 1 I am getting 7.875 and its wrong, im so confused what im doing wrong!
*November 6, 2012*

**Physics**

I am geting .875 for my acceleration and its saying its wrong! Was your value this small?
*November 6, 2012*

**Physics**

A 9.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.300 k∙m2 and a radius of 0.500 m. Assuming that the cord does not slip on the pulley, ...
*November 6, 2012*

**math**

3/50
*November 5, 2012*

**math**

add and subtract unlike fractions 3 over 50
*November 5, 2012*

**science**

give an example of a physical stimulus for touch, sight, and hearing. name the organs this sense is associated with.
*November 4, 2012*

**Pre- AP Physics**

The earth exerts a force of 2800 N on an or- biting communications satellite that is 31 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answerinunitsof N
*November 4, 2012*

**Geo**

A 30ffoot tree cast a12 foot shadow find the measure of the angle of elevation of the sun to the nearest degree.
*October 29, 2012*

**Chemistry**

How much heat is required to bring 1.0kg of water from 25 degrees celsius to 99 degrees celsius?
*October 26, 2012*

**Chemistry**

How much heat in kilojoules has to be removed from 225g of water to lower its temperature from 25.0 degrees celsius to 10.0 degrees celsius?
*October 26, 2012*

**Physics**

During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.11 s, how high does it rise?
*October 21, 2012*

**Physics**

A bullet is fired straight up from a gun with a muzzle velocity of 312 m/s. Neglecting air resistance, what will be its displacement after 1.4 s?
*October 21, 2012*

**Modern world studies**

7. The French philosopher Baron de Montesquieu believed that the power of a government __________.
*October 19, 2012*

**math**

how do you multiply monomials ?
*October 16, 2012*

**math**

(x^3y^2)^2
*October 16, 2012*

**physics**

A 74-kg fisherman in a 124-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.4 m/s as in the figure below. Neglecting water resistance, and assuming the boat is at rest before the package is thrown, find the velocity of the boat ...
*October 12, 2012*

**Chemistry**

Uhmmm.. I am totally lost! Help? There are 7.0 x 10^6 red blood cells in 1.0 mm^3 of blood. How many red blood cells are in 1 L of blood?
*October 6, 2012*

**science **

The earth has a magnetic north and south. How does this help up with evidence to support the theory of Continental Drift?
*October 2, 2012*

**Chemistry**

In the redox conversion of CO to CO2− 3 , the oxidation number of C goes from (−2, 0, +2) to (−4, −2, +4, +6). Recall that the oxidation number of oxygen is typically −2. 1. +2; +6 2. −2; −4 3. 0; −2 4. 0; +6 5. −2; +6 6. +...
*September 30, 2012*

**Chemistry**

In four of the following groups, the three substances are either all strong electrolytes, all weak electrolytes, or all nonelectrolytes. Which group has one member which is NOT like the others in the group? 1. BaCl2; NaNO3; HF 2. O2; CO(NH2)2; CH3OH 3. NaCl; Ca(OH)2; HNO3 4. ...
*September 30, 2012*

**Human Biology**

Tendon sheaths are used to?
*September 27, 2012*

**algebra**

Specialty t-shirts are being sold online for $30 plus a one-time handling fee of $2.75. The total cost is a function of the number of t-shirts bought. What function rule models the cost of the t-shirts? Evaluate the function for 5 t-shirts.
*September 27, 2012*

**Calculus**

Determine the limit of the trigonometric function: Limit as x approaches pi/4 of (1-tanx)/(sinx-cosx) I need step by step help using the special trignometric limits theorem.
*September 26, 2012*

**7th grade science**

Its not correct because it's not that rock
*September 25, 2012*

**Chemistry**

What is 6.3 x 10 to the 4th power converted to scientific notation
*September 16, 2012*

**Physics**

The magnitude of vector is 18.0 units and points in the direction 345° counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector.
*September 16, 2012*

**math**

What is the sum of 667 and 23?
*September 15, 2012*

**math**

A pharmacist has 2 hectograms 55 grams of pills. Each pill weighs 1 gram 2 centigrams. how many pills does the pharmacist have altoghter?
*September 15, 2012*

**math**

How much interest will Mary owe if she borrows $2,000 at a rate of 6% for 2 years?
*September 15, 2012*

**math**

A certain mixture calls for 6mg of amoxycillin to 15 liters of water. How many liters of water would you need for 12mg of amoxycillin?
*September 15, 2012*

**math**

If you buy 6 boxes of cereal for $ 10, how much will 9 boxes of cereal cost ?
*September 15, 2012*

**math**

If you can buy 12 cans of juice for $8, how much will 18 cans cost ?
*September 14, 2012*

**math**

how much will Mary owe if she borrows $2,000 at a rate of 6% for 2 years?
*September 14, 2012*

**English**

In the Tale of Two Cities question. Besides the foreshadowing of the blood bath to come, what does the people's response to the spilled wine show us?
*September 14, 2012*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...
*September 11, 2012*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...
*September 11, 2012*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...
*September 11, 2012*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...
*September 11, 2012*

**science**

how do you do the worksheet JELLY SIDE DOWN?
*September 9, 2012*

**math**

pretend u r making beads for all the students in your school and u have 1,000,000 and u want to seperate all the different beads. And u will to put 100,000 in to each box. Witch box will u find the 4,358,216th bead.
*September 5, 2012*

**math**

Suppose u want to place 1,000,000 pennies in large coin banks. If u put 50,000 pennies in each bank in witch bank would u find the 678,230th penny
*September 5, 2012*

**english**

Many greek tables had three legs that ended in feet shapec like paws. Am I correct in saying this is adjective clause
*September 3, 2012*

**chemistry**

While in Europe, if you drive 107 per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 42.0 ? Assume that 1 euro=1.26 dollars
*August 30, 2012*

**Biology**

1. c 2. c 3. d 4. c Just did the assessment :) Hope this helps! All of this was in the book and very easy to find so next time look it up in the book. Its easier then waiting, who knows how long, for an answer.
*August 24, 2012*

**us history**

How did the timezone impact on the industrial revolution in america
*August 24, 2012*

**health**

look literally thought i was the only one doing ash worth
*August 11, 2012*

**math grade 12**

what does the nth term mean
*July 18, 2012*

**Physics**

so I have mgh = 300. i have my rotational energy = 350. so it will reach the top, correct?
*July 15, 2012*

**Physics**

Thanks bobpursley! I was somewhere close to that idea. I had mgh=1/2mv^2 + 1/5mv^2. I let h=12sin30. I was solving for velocity for some reason, doh!
*July 15, 2012*

**Physics**

You roll a 5 kg bowling ball (R=20cm) with an initial speed of 10 m/s up a 30 degree ramp that is 12 m long. Will the ball reach the top of the ramp? (support your answer)
*July 15, 2012*

**Physics (angular momentum)**

A solid disk of 5kg and radius 0.5m turns at the rate of 10rpm. You then carefully place a 2kg book at the edge of table as it spins. What is the new rotation rate of the table(in rpm)?
*July 15, 2012*

**Math**

Thanks!
*July 9, 2012*

**Math**

A mini-cone has a diameter of 2 inches at the widest point and holds 12.5 in3 of ice cream. A mega-cone holds 133.1 in3 of ice cream. What is the diameter of the mega-cone at its widest point?
*July 9, 2012*

**GED-Word Problems**

Rob's tape measure is marked in centimeters. He is building a birdhouse from plans marked in inches. He needs a board 22 inches long. Karl knows there are 2.54 CM in 1 in. How can he figure out how many centimeters are 22 inches?
*June 18, 2012*

**Physics check my answer!**

In order to reduce potential danger to the environment, a biohazard laboratory maintains an internal air pressure that is 1% lower than atmospheric pressure. The net force acting on a 1.8-m2 external window of this laboratory due to air pressure is most nearly 1.8 N 18 N 1.8 &...
*June 15, 2012*

**math**

whats a math problem for 48 divided by 8 equals 6
*June 15, 2012*

**GED-Word Problems**

Taxes on lot A are $151.00 are more than on lot B. the combined taxes on the 2 lots are $1,121.00. What are the taxes for each lot?
*June 12, 2012*

**GED-Word Problems**

Enrique put $300 dollars into a savings account at 5% interest per year. The earned interest on the $300 was added to the account at the end of the year. At the time Enrique made an additional deposit of $200. How much does have in his account?
*June 12, 2012*

**Physics**

A 6.25 kg solid ball with a radius of 0.185 m rolls without slipping at 3.55 m/s. What is its total kinetic energy? I didn't understand what the last person gave me for help can someone please help me!
*June 10, 2012*

**Physics**

A 6.25 kg solid ball with a radius of 0.185 m rolls without slipping at 3.55 m/s. What is its total kinetic energy?
*June 9, 2012*

**chemistry HELP plz!**

What value should theoretically be obtained for the intercept on a graph of mass vs volume? HINT: The intercept corresponds to zero mass and zero volume.
*May 28, 2012*

**Geometry (Mathematics)**

P = 2L + 2W 74 = 2(W + 15) + 2W 74 = 2W + 30 + 2W 74 - 30 = 4W 44 = 4W 11 = W
*May 22, 2012*

**trig**

Write an equation for simple harmonic motion, given that the amplitude equals 4 inches and the period equals 2 seconds and the max displacement occurs when t=0. answers: y=4sin pi t, y=4cos pi t, y=4cos t, y=4sin2 pi t
*May 17, 2012*

**trig**

an angle with the radian measure of 9pi/5. find radian measure of its reference angle. answers: -4/5, 4pi/5, -pi/5, or pi/5
*May 17, 2012*

**trig**

what is the exact value of sin[tan^-1(2/3)]
*May 17, 2012*