# ted

Popular questions and responses by ted-
## Math

If Julie needs 3 1/4 cups of oatmeal, how many 1/4 cups oatmeal will shw use?

*asked on January 30, 2013* -
## physic

you are designing a diving bell to withstand the pressure of sea water at a depth of 250m. a)what is the quage pressure at the depth(you can ignor the small changes in the density of the water with depth.) b)at the 250m depth, what is the net force due to

*asked on July 20, 2010* -
## math grade 12

What is the arc length if the central angle is 225 degrees and the radius of a circle is 3 cm? pls help. i don"t get it

*asked on July 21, 2012* -
## Calculus and vectors

Vector AB is a vector whose tail is at (-4,2) and whose head is at (-1,3). Calculate the magnitude of vector AB Determine the coordinates of point D on vector CD, if C (-6,0) and vector CD= vector AB. Please I need some help. Is there a formula to solve

*asked on February 5, 2013* -
## physics

Starting from the constant-acceleration kinematic equations, write a formula that gives xf in terms of t, xi, vf, and a.

*asked on January 25, 2014* -
## maths

1. A cone justs fits inside a cylinder with volume 300cm^2. what is the volume of the cone?Give reasons for your answers.

*asked on May 15, 2010* -
## Physics

In Fig. 6-21, a slide-loving pig slides down a certain 37° slide in twice the time it would take to slide down a frictionless 37° slide. What is the coefficient of kinetic friction between the pig and the slide?

*asked on October 23, 2011* -
## math

Adam has built a garden shed in the shape described. a square based pyramid with the height of 3.5m on top of a cube with base 4m by 4m and height 2m. calculate the volume of the shed, to the nearest cubic metre. thanks.

*asked on May 16, 2010* -
## Physics

The force required to stretch a Hooke’s-law spring varies from 0 N to 63.5 N as we stretch the spring by moving one end 5.31 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m

*asked on February 8, 2013* -
## drama

can you help me answer the following question inthe play ''the sandbox by edward albee of what is the beach a symbol in the play? symbollically, what does daddy mean when he says ''i'm cold'' state two very noticeable things about the young man's

*asked on September 25, 2010* -
## Finance

Gluon Inc. is considering the purchase of a new high pressure glueball. It can purchase the glueball for $110,000 and sell its old low-pressure glueball, which is fully depreciated, for $20,000. The new equipment has a 10-year useful life and will save

*asked on February 14, 2016* -
## math

Suppose that the population of a town is described by P=0.16t^2+7.2t+100, where P is the population in thousands and t is the time in years, ( with t=o representing the year 2000). A. what will the population be in 2010? B. what was the population in 1995?

*asked on November 24, 2010* -
## English

Which word has a meaning similar to prodigy? A. Statue B. Babysiter C. Athlete***** D. Wonder

*asked on March 7, 2019* -
## careers- school ties discussion questions

What was Dillon's fundamental problem in the move ''School Ties''

*asked on May 3, 2011* -
## Physics

A stopper tied to the end of a string is swung in a horizontal circle. If a mass of the stopper is 13.0 g, and the string is 93.0 cm, and the stopper revolves at a constant speed 10 times in 11.8 secs, what is the tension on the string? I tried solving

*asked on March 25, 2013* -
## math

A group of students have volunteered for the student council car wash. Janet can wash a car in m minutes. Rodrigs can wash a car in m-5 minutes, while Nick needs the same amount of time as Janet.If they all work together, they can wash a car in about 3.23

*asked on December 18, 2012* -
## math

Create a quadratic polynomial function f(x) and a linear binomial in the form (x − a). Part 1. Show all work using long division to divide your polynomial by the binomial. Part 2. Show all work to evaluate f(a) using the function you created. Part 3. Use

*asked on June 9, 2016* -
## Physics

A basketball is thrown from the ground into the air at an angle of 30 degrees to the horizontal. If this object reaches a maximum height of 5.75m, at what velocity was it thrown? How am i suppose to do this question if no velocity is given? I need help. I

*asked on March 5, 2013* -
## careers- school ties discussion questions

In the movie, school ties,what was dillon's pettern of prejudice/discrimination.

*asked on April 29, 2011* -
## Math

If you are given odds of 3 to 4 in favor of winning a bet, what is the probability of winning the bet?

*asked on July 27, 2013* -
## Finance

Stormy Weather has no attractive investment opportunities. Its return on equity equals the discount rate, which is 10%. Its expected earnings this year are $2 per share. Find the stock price, P/E ratio, and growth rate of dividends for plowback ratios of

*asked on February 10, 2016* -
## physics.pls help

How much time can you save travelling diagonally instead of running 450meters south and then 650meters west. if your running speed is 5.0m/s. pls help

*asked on November 1, 2011* -
## physics

Because a concave lens cannot form a real image of a real object, it is difficult to measure its focal length precisely. One method uses a second, convex, lens to produce a virtual object for the concave lens. Under the proper conditions, the concave lens

*asked on February 14, 2015* -
## Algebra

The graph below shows the expected monthly temperature of a certain city from April to August; the readings that correspond to the vertical lines are taken on the first day of each month. (For example, the expected temperature on April 1 is 70 degrees.)

*asked on June 12, 2013* -
## physics

A 1.80-kg block slides down a frictionless ramp.The top of the ramp is h1 = 1.21 m above the ground; the bottom of the ramp is h2 = 0.256 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance $d$ away. Calculate

*asked on March 5, 2014* -
## Physics

A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.5 m/s. The acceleration of gravity is 9.81 m/s 2 . What is the initial height of the bob? Answer in units of m

*asked on February 5, 2013* -
## Trig

Solve the equation 3sin(2x)+3sinx=0 on the interval 0 ≤ pi

*asked on August 19, 2019* -
## English

what is the tone in the poem "Home for the Aged" by Elizabeth Brewster? NEED HELP

*asked on August 4, 2015* -
## Physics

A monochromatic laser beam, with a wavelength of 532 nm passes through a diffraction grating. If the second order diffraction maximum occurs at an angle of 35.0 degrees to the straight through position, calculate the separation of adjacent slits on the

*asked on April 24, 2018* -
## Chemistry

A denaturation/renaturation (similar to the one carried out by Anfinsen with ribonuclease) experiment was carried out using insulin. However, in contrast to Anfinsen's results, only less than 10% of the activity of insulin was recovered when urea and BME

*asked on September 8, 2012* -
## Physics

A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration. After 20.0 s, the wheels have made 219 rev. What is the angular acceleration of the wheels? What is the angular velocity of the wheels after 20.0

*asked on April 2, 2014* -
## physics

• If you use a cart with half the mass, you reach _______final speed. • If you use half the force, you reach ______ final speed. • If you push twice as long, you cover _______ distance during pushing. • If you use a cart with half the mass, you

*asked on February 17, 2014* -
## Physics

A loaded penguin sled weighing 66 N rests on a plane inclined at angle θ = 24° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.22, and the coefficient of kinetic friction is 0.13. (a) What is the

*asked on October 23, 2011* -
## math

during the summer months, sarah makes and sells necklaces on the beach. last summer she sold the nacklaces for $10 each. Her sales averaged 20 per day. Considering a price increase, she took a small survey and found that for every dollar increase, she

*asked on December 13, 2010* -
## finance

How much will $100 grow to if invested at a continuously compounded interest rate of 10.75% for 8 years?

*asked on February 7, 2016* -
## biology

why do breathing rates increase in crowded rooms. pls help

*asked on April 4, 2012* -
## math

Helga owns a campground, and she has installed a rectangular swimming pool measuring 10m by 20m. She wants to put a wooden deck of uniform width around the pool. A. Helga has budgeted $1920 to spend on the deck and knows that construction costs are

*asked on November 24, 2010* -
## Trignometry

Determine the total number of solutions for the given equation: tan(2θ-pi/2)=1 on the interval [0, 2pi]

*asked on August 19, 2019* -
## math

The city bus company usually transports 12000 riders per day at a ticket price of $1. The company wants to raise the tickets price and knows that for every 10 cents increase, the number of riders decreases by 400. A. What price for a ticket will maximize

*asked on November 24, 2010* -
## religion

in terms of religion, how are relationships life giving? pls i really need a perfect answer for this

*asked on May 19, 2010* -
## Trig

Use fundamental identities and or the complementary angle theorem to find the value of the expression: tan 55°-cos 35°/sin 35° a.) sqrt2/2 b.) sqrt3 c.) sqrt3/2 d.) sqrt2 e.) 0 f.) 1

*asked on September 5, 2019* -
## physics

A rocket cruising past earth at 0.800c shoots a bullet out the back door,opposite the rocket's motion,at 0.900c relative to the rocket. What is the bullet's speed relative to the earth?

*asked on April 11, 2013* -
## math

Boris throws a ball vertically upward from the top of a cliff. The height of the hall above the base of the cliff is approximated by the model h=65+10t-5t^2, where h is the height in metres and t is the time in seconds. a. How high is the cliff? b. How

*asked on November 24, 2010* -
## physics

Light is incident from air onto a flat transparent slab of material, at an angle of 62.2° with the normal. The reflected ray and the refracted ray are perpendicular to each other. What is the index of refraction of the transparent substance?

*asked on January 20, 2015* -
## Physics

A worker drives a 0.460 kg spike into a rail tie with a 2.16 kg sledgehammer. The hammer hits the spike with a speed of 64.5 m/s. If one third of the hammer’s kinetic en- ergy is converted to the internal energy of the hammer and spike, how much does the

*asked on March 14, 2013* -
## physics

Estimate the pressure exerted on the floor by a 75 kg store clerk standing momentarily on a single heel of their shoe, where the heel area = 6 cm square?

*asked on November 29, 2011* -
## parenting

making the decision to have a child is momentous. it is to decide forever to have your heart go walking outside your body. pls i was asked to write a one page reflection, but i don't know what to write or how to start. pls help me

*asked on September 12, 2010* -
## Trig

Which of the following are polar coordinates of the point whose rectangular coordinates are (-2, -2sqrt3)? a.) (4, pi/3) b.) (2sqrt3, 4pi/3) c.) (4, 7pi/6) d.) (4, 4pi/3) e.) none of these

*asked on September 6, 2019* -
## physics.pls help

An ice hut used for winter fishing is at rest on a level patch of snow. The mass of the hut is 80kg. A wind exerts a horizontal force of 205N on the hut, and causes it to accelerate. While in motion, the magnitude of the force of friction acting on the hut

*asked on November 17, 2011* -
## finance

A General Power bond with a face value of $1,000 carries a coupon rate of 9.0%, has 9 years until maturity, and sells at a yield to maturity of 8.0%. (Assume annual interest payments.)

*asked on February 9, 2016* -
## Physics

An ore car of mass 37000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 9.9 m lower vertically, is a horizontally situated spring with constant 3.9 × 10 5 N/m. The acceleration of gravity is 9.8 m/s 2 . Ignore

*asked on February 8, 2013* -
## CHEMISTRY

At what temp do hydrogen molecules, H2, have the same rms speed as nitrogen molecules, N2, at 455 C? At what temperature do hydrogen molecules have the same average kinetic energy?

*asked on October 23, 2012* -
## Physics

A student, crazed by final exams, uses a force of magnitude 86 N and angle θ = 61° to push a 5.2 kg block across the ceiling of his room, as in Figure 6-52. If the coefficient of kinetic friction between the block and the ceiling is 0.34, what is the

*asked on October 24, 2011* -
## Math- Probability

A committee of five people is to be formed from six lawyers and seven teachers. Find the probability that none are lawyers.

*asked on July 29, 2013* -
## math

A pair of skydivers jump out airplane 5.5km above the ground. The equation H=5500-5t^2 is an appropriate model for the divers' altitude in metres at tseconds after jumping out of the plane. A. After 10secs how far have the divers fallen? B. They open their

*asked on November 24, 2010* -
## chemistry

A 33.4 g sample of a nonelectrolyte was dissolved is 680. g of water. The solution's freezing point was -2.89°C. What is the molar mass of the compound?

*asked on May 28, 2019* -
## math

Consider a parabola P that is congruent to y=x^2, opens upward,and has its vertex at (2,-4). Now find the equation of a new parabola that results if P is: A. stretched vertically by a factor of 5. B. compressed by a factor of 2. C. translated 2 units to

*asked on December 9, 2010* -
## Trig

Which of the following polar coordinates describes the same point as the point (5, -pi/6) given in polar coordinates? a.) (5, pi/6) b.) (-5, -pi/6) c.) (5, 5pi/6) d.) (-5, 5pi/6) e.) none of these

*asked on September 4, 2019* -
## math

The city bus company usually transports 12000 riders per day at a ticket price of $1. The company wants to raise the tickets price and knows that for every 10 cents increase, the number of riders decreases by 400. A. What price for a ticket will maximize

*asked on November 24, 2010* -
## math

susan has $450. she uses 30% of her money to but a dress and 20% of the remainder to buy a pair of shoes. how much money does she have left? i got $225.00 left. am i right

*asked on January 30, 2013* -
## math

A professional stunt performer at a theme park dives off a tower 21metres high into the water. His height above the ground at time tseconds is given by the equation h=-4.9t^2+21 a. How long does it take to reach the halfway mark?

*asked on November 24, 2010* -
## math

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice

*asked on October 20, 2010* -
## Trig

Convert the following equation from an equation using polar coordinates to an equation using rectangular coordinates: 6sinθ=r-5cosθ a.) 6y=-5x b.) x^2-6x+y^2-5y=0 c.) x^2-5x+y^2-6y=0 d.) x^2+6x+y^2+5y=0 e.) x^2+5x+y^2+6y=0 f.) 5y=-6x

*asked on September 4, 2019* -
## math

Suppose that the population of a town is described by P=0.16t^2=7.2t=100, where P is the population in thousands and t is the time in years, ( with t=o representing the year 2000). A. what will the population be in 2010? B. what was the population in 1995?

*asked on November 24, 2010* -
## chem

If it takes 84.2 min for the concentration of a reactant to drop to 20.0% of its initial value in a first-order reaction, what is the rate constant for the reaction in the units min-1?

*asked on April 14, 2013* -
## Physics

Calculate the time it takes for a gamma ray to travel from the Sun to the Earth Distance (mean) Earth to Sun=1.5 e11 m

*asked on April 24, 2018* -
## Chemistry

At what temp do hydrogen molecules, H2, have the same rms speed as nitrogen molecules, N2, at 455 C? At what temperature do hydrogen molecules have the same average kinetic energy?

*asked on October 23, 2012* -
## Physics

The amount of internal energy needed to raise the temperature of 0.26 kg of water by 0.3C is 326.5 J. How fast must a 0.26 kg baseball travel in order for its kinetic energy to equal this internal energy? Answer in units of m/s

*asked on March 14, 2013* -
## Physics

A 64.7 kg astronaut is on a space walk away from the shuttle when her tether line breaks. She is able to throw her 14.1 kg oxygen tank away from the shuttle with a speed of 7.45m/s to propel herself back to the shuttle. Assuming that she starts from rest

*asked on February 26, 2013* -
## english

I was given an assignment to write a one paragraph essay. I need you to pls help me with my essay on "the sniper" by liam o'flaherty. you can tell me where i went wrong and anyother thing. This is my essay so far: War knows no boundaries(age, sex, location

*asked on February 18, 2011* -
## math

points P(4,12), Q(9,14), and R(13,4)are the three vertices of a rectangle. a. find the coordinates of the fourth vertex, S. b. write a short description of how you found the coordinates of S. c. find the lengths of the diagonals of rectangle PQRS. COMMENT

*asked on October 16, 2010* -
## physics.pls help

The volume of a cylinder is defined by the formula V=pie R squared h. If initially have a cylinder with a volume of 10m cubed. Find the volume of the cylinder if the height doubles and if the height is cut in half. pls i really need help.

*asked on November 3, 2011* -
## Physics

A 110 g hockey puck sent sliding over ice is stopped in 14.9 m by the frictional force on it from the ice. (a) If its initial speed is 7.8 m/s, what is the magnitude of the frictional force? (b) What is the coefficient of friction between the puck and the

*asked on October 24, 2011* -
## math

A builder needs to connect a partially built house to a temporary power supply. On the plan, the coordinates of the house are (50,114) and the power supply is at (147,82). what is the least amount of cable needed? why is it likely that the builder will use

*asked on October 16, 2010* -
## Trig

Which of the following is not a fifth root of -1? a.) cos 36°+ i sin 36° b.) cos 252°+ i sin 252° c.) cos 108°+ i sin 108° d.) cos 180°+ i sin 180° e.) cos 244°+ i sin 244° f.) cos 324°+ i sin 324°

*asked on September 4, 2019* -
## physics

You exert a larger force on the cart than the cart exerts on you. T/F When you stop pushing, the cart will continue moving at the same speed. T/F While the cart is pushed, it has a constant acceleration. T/F

*asked on February 17, 2014* -
## Physics

How much work is done pushing a wheel barrow full of cement 5.3m forward if a force of 500N is applied 20 degrees from the vertical?

*asked on April 11, 2013* -
## chemistry

Do the relative proportions of elements ina agiven compound vary from sample? pls help

*asked on September 23, 2011* -
## math

A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a mico-tunnelling machine. the cable will link points with coordinates A(-18,12), B(-8,1), C(3,4), and D(15,7), in a run beginning at D. if one unit on

*asked on October 17, 2010* -
## Trig

cos2x(2cosx+1)=0 Solve for x.

*asked on November 17, 2008* -
## Physics

A)A very narrow beam of white light is incident at 42.20° onto the top surface of a rectangular block of flint glass 12.6 cm thick. The indices of refraction of the glass for red and violet light are 1.647 and 1.672, respectively. Calculate the dispersion

*asked on January 23, 2015* -
## physics.pls help

Why is it important to asaume that a rope under tension is taut and does not stretch. pls help

*asked on November 14, 2011* -
## math

The cosat C, in dollars, of operating a concrete-cutting machine is modelled by C=2.2n^2-66n+655, where n is the number of minutes the machine is run. How long must trhe machine run for the operating cost to be at a minimum? What is the4 minimum cost?

*asked on December 9, 2010* -
## Chemistry

If you add acid or base to water how will the pH change.

*asked on December 1, 2010* -
## math

A radius of a circle has end points at O(-1,3) and R(2,2). find two possible end points for the diameter that contains this radius. describe any assumptions you make.

*asked on October 18, 2010* -
## Physics

A) On a calm, bright day, you're scuba diving in a deep lake (n = 1.33), 6.00 m away from your sailboat in the horizontal direction. When you are 2.20 m below the surface, the top of the sailboat mast appears to you to be in a direction 36.0° from

*asked on January 14, 2015* -
## Physics

A basketball is thrown from the ground into the air at an angle of 30 degrees to the horizontal. If this object reaches a maximum height of 5.75m, at what velocity was it thrown? How am i suppose to do this question if no velocity is given? I need help. I

*asked on March 4, 2013* -
## physics

A man is driving his car ata velocity of 100km/h on a straight road. H e sees a traffic jam at a distance and slows down to 12.5m/s in 3.0s. What is the average acceleration of the car? pls help. I know that the formula for average acceleration is V2-V1

*asked on October 12, 2011* -
## math

The sum of the squares of three consecutive integers is 194. what are the integers?

*asked on January 20, 2011* -
## English

IN THE BOOK OF SHAKESPEARE NAMED ROMEO AND JULIET. in act3 scene 1, which character seem to want peace and which one seem to want to fight most? What does mercutio mean when he says,''I have it, and soundly, too.Your houses''(scene1, line 104)? what

*asked on May 17, 2010* -
## careers- school ties discussion questions

from the movie school ties, what david green and dillion's pattern of prejudice/discrimination

*asked on April 23, 2011* -
## math

triangle ABC has vertices A(3,4), B(4,-3) and C(-4,-1). a. draw a sketch of the triangle b. draw the altitude from vertex A c. find the slope of side BC which is =-1/4 d. find the slope of the altitude from A which is 4 e. find the equation of the line

*asked on October 27, 2010* -
## accounting

Assume Venture Healthcare sold bonds that have a ten-year maturity, a 12 percent coupon rate with annual payments, and a $1,000 par value. a. Suppose that two years after the bonds were issued, the required interest rate fell to 7 percent. What would be

*asked on October 11, 2010* -
## calculus

I am confused on how to write this function as an exponential function having a base 10: P(t)= 50e^(0.5t). The answer in my textbook is: P(t) =50(10)^(t/4.6)

*asked on April 20, 2010* -
## science

1. how does a region's climate determine plant and animal life there? 2. how does climate affect our life style?

*asked on July 5, 2010* -
## Statistics

To test H0: = 80 versus H1: < 80. a simple random sample of size n = 22 is obtained from a population that is known to be normally distributed. a) If ¯x = 76.9 and s = 8.5, compute the test statistic.

*asked on April 25, 2013* -
## Physics

What is the final equilibrium temperature when 7 g of milk at 5C is added to 117 g of coffee at 68C? Assume the specific heats of milk and coffee are the same as that of water, and neglect the specific heat of the container. Answer in units of C

*asked on March 13, 2013* -
## math

one endpoint of a line segment has coordinates(-3,-1). The midpoint of the line segmaent is at (1,1), what is the location of the other end point?

*asked on October 18, 2010* -
## math

A cone just fits inside a cylinder with volume 300cm^3. What is the volume of the cone?

*asked on May 16, 2010* -
## Maths

A rectangular fish tank has a base area of 0.3 m squared and height 30 cm and is filled with 80 L of water. Ten large fish with volume 50 cm cubed each are placed into the tank. By how much does the water rise?

*asked on November 5, 2016*