Wednesday

October 1, 2014

October 1, 2014

Number of results: 16,237

**physics**

which will reach the bottom first, a hallow cylider or a solid cylider wth the same mass in an inclined plane?
*February 9, 2012 by aa*

**PHYSICS**

A Cessna 350 must reach a speed of 35 m/s for takeoff. If the plane accelerates at a steady 3.8 m/s2, how long must the runway be?
*September 13, 2012 by sara*

**Calculus**

The location of a dot P at a given time t in the x-y plane is given by (x,y) = (t - sin t, 1 - cos t). What is the distance traveled by P in the interval 0 <= t <= 2pi
*March 6, 2013 by Tony*

**Math**

A plane leaves point A and flies S80° E to point B400 km away. How far east of A is B (to the nearest kilometer)?
*April 6, 2013 by Vincent *

**physics**

A square loop 23.5 on a side has a resistance of 2.80 . It is initially in a 0.575 magnetic field, with its plane perpendicular to , but is removed from the field in 35.0 .
*May 27, 2013 by melissa*

**Math**

What is the maximum number of points of intersection of two different lines and three different circles in the same plane?
*December 6, 2013 by Xian*

**math**

Ten distinct noncollinear points are chosen on a plane. a) How many line segments can be formed by joining any two of these points?
*January 14, 2014 by Tintin*

**plane and spherical trigonometry**

trigonometry in oblique triangles
*August 3, 2014 by keicer*

**Reading**

The Great Depression http://encarta.msn.com/encyclopedia_761584403/Great_Depression_in_the_United_States.html
*March 26, 2007 by Catie*

**U.S. History**

Which one of these was not the causes of the Great Depression? excessive income taxes speculative stock purchases risky banking practices severe drought I think it is excessive income taxes or severe drought. But I don't think it is severe drought because of the Dust Bowl. But...
*April 11, 2012 by Ricky*

**math**

um take home test...i have no idea what im doing always sometimes never 1. sin2x=2sinx 2. cos (pie/3+x)=-sinx 3. if tan x=3 and tan y=2 then tan (x+y)=5 4. when you use the half angle formulas you choose whether to use a + or - by noting in which quadrant the angle lies 5. ...
*June 11, 2006 by allison*

**Physics**

Rachel Pulls her 18 KG suitcase at at a constant speed by pulling on a handle that makes and angle (theta) with the Horizontal the frictional force of the suitcase is 27 N and Rachel exerts a 43 N force on the handle What angle does the handle make with the horizontal?
*October 25, 2010 by Anonymous*

**pre calc**

each of three circles touches the other 2.circle A has a radius of 8 cm. circle B has a radius of 4 cm.circle C has a radius of 1 cm.a triangle is formed by connecting the centers of the 3 triangles. determine the largest angle for the triangle and in which circle is the ...
*December 8, 2011 by bob*

**Maths **

In two right angeled triangles, one sides and acute angle of one triangle are equal to one side and the corresponding acute angle of the other triangle, prove that the two triangles are congruent.
*July 29, 2012 by Anupam khatiwara*

**math **

The sum of the measures of the angles of any triangle is 180 degrees. In triangle abc, angles a and b have the same measure, while the measure of angle c is 78 degrees larger than each of a and b. What are the measures of the three angles? angle a is __degrees.
*September 7, 2012 by Kelly*

**stats**

A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list placement." How many ...
*March 1, 2009 by ash*

**stats ?**

A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication," or "waiting list placement." How many ...
*March 2, 2009 by ash*

**business law**

Adam’s godmother, Helen, is 93 years old and in poor health. Helen is a life-long alcoholic and has a history of depression and bipolar disorder. At the party celebrating Adam’s high school graduation, after consuming several Double Martini’s, Helen, clearly intoxicated, ...
*December 1, 2009 by scoobies law*

**Phyics**

A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.710. Find the smallest value for the angle , such that the lower end of ...
*November 10, 2013 by Bobby*

**physics**

A reflection grating is required which can resolve wavelengths as close as 0.002 nm in second order for the spectral region around 350 nm.The grating is to be installed in an instrument where light from the entrance slit is incident normal on the grating. If the manufacturer ...
*April 2, 2010 by Sandhya*

**Trig**

The angle of elevation to the top of a building from a point on the ground is 39 degrees. From a point 50 feet closer to the building, the angle of elevation is 48 degrees. What is the height of the building?
*February 16, 2011 by Chetan Munsell*

**trig**

A force of 50 pounds acts on an object at an angle of 45°. A second force of 75 pounds acts on the object at an angle of -30°. Find the direction and magnitude of the resultant force.
*December 14, 2011 by Cam*

**trigonometry**

please check my answers. 1.Find the area of the sector of a circle. r=11.8cm, theta-pi/7 radians I got 31.2cmsquared 2.Find the radius of a circle in which a central angle of pi/6radian determines a sector of area 76square meters. I got 17.03m 3.Find the measure(in radians) of...
*January 7, 2009 by y912f*

**Physics**

Imagine a right-angle triangle with angle θ = 40o on the left. The serves as an increasing slope. On the slope is an object of mass m1= 340 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a ...
*October 6, 2009 by Leah*

**geometry**

find the value of x in each triangle: triangle x has 1 angle at 53 degree for value x i got: 63.5 degree is that correct? Classify each triangle. 7. The measures of 2 angles are : 45 degree and 45 degree i got: acute 8. the measures of 2 angles are 15 degree and 47 degree i ...
*March 21, 2012 by marko*

**geometry**

find the value of x in each triangle: triangle x has 1 angle at 53 degree for value x i got: 63.5 degree is that correct? Classify each triangle. 7. The measures of 2 angles are : 45 degree and 45 degree i got: acute 8. the measures of 2 angles are 15 degree and 47 degree i ...
*March 21, 2012 by marko*

**Physics**

Two masses are connected by a string as shown in the figure. Mass = 3.4 rests on a frictionless inclined plane, while = 5.5 is initially held at a height of = 0.90 above the floor.
*April 1, 2011 by billy*

**geometry**

equation x+3y+2z=6 (6,2,3) how would you sketch the plane on a set of axes? is it supposed to look like a triangle? becuse my paper says it makes a trangular pyramid. i dont get it
*May 31, 2011 by jessica*

**Physics**

An F-18 with a weight of 22500 lb lands on a carrier with a speed of 120mph. If the run-out of the arresting cable is 160ft, what is the plane's acceleration in feet per second squared?
*March 7, 2012 by Jack Binns*

**Maths**

Three circles are placed on a plane in such a way that each circle just touches the other two , each having a radius of 10 cm.find the area of region enclosed by them
*February 17, 2013 by Anonymous*

**Physics**

An object is placed on a frictionless inclined plane, and will accelerate at a constant rate. Determine the amount of acceleration due to gravity both parallel and perpendicular to the incline.
*February 10, 2014 by Mason*

**Physics**

What would our seasons be like if the rotation of the Earth's was aligned with the plane of the ecliptic so that the north pole pointed directly at the Sun once per year.
*March 1, 2014 by Rashida*

**chemistry**

The vapor pressure of pure water at 70°C is 231 mm Hg. What is the vapor pressure depression of a solution of 115 g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 205 g of water? Use molar masses with at least as many significant figures as the data ...
*December 12, 2012 by Brad*

**Physics**

An explorer in the dense jungles of equatorial Africa leaves his hut. He takes 39 steps at an angle 45 north of east, then 80 steps at an angle 60 north of west, then 51 steps due south. Assume his steps all have equal length. Save him from becoming hopelessly lost in the ...
*September 11, 2012 by Allison B*

**Physics**

An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.Â i.e.Â The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon. Â Find the direction of propagation of ...
*December 3, 2012 by Alphonse*

**Physics**

An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.Â i.e.Â The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon. Â Find the direction of propagation of ...
*December 3, 2012 by Alphonse*

**Math**

I have tried this problem a few ways, and I am getting frustrating results. Could you help me out by showing me how to set the systems of equations Two angles are complementary The sum of the measure of the first angle and 1/4 the second angle is 82.5. Find the measure of the ...
*December 20, 2009 by Shane*

**Math**

I have tried this problem a few ways, and I am getting frustrating results. Could you help me out by showing me how to set the systems of equations Two angles are complementary The sum of the measure of the first angle and 1/4 the second angle is 82.5. Find the measure of the...
*December 20, 2009 by Sw*

**Math**

1 the mystery shape has at least 2 lines of symmetry 2 at least 1 of its diagonals is also a line of symmetry 3 it has has at least 1 obtuse angle 4 at least 3 of its angles are congruent 5 its total angle measure is between 100 degrees and 1,000 degrees A. square B. rhombus C...
*March 26, 2011 by Rayna*

**Physics (Velocity in two dimensions)**

Please help: The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...
*February 21, 2013 by Kathy*

**Physics (Velocity in two dimensions)**

Please help, The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...
*February 21, 2013 by Kathy*

**Geometry**

1. Explain whether the following statement is a valid definition: “A 150° angle is an obtuse angle.” Use the converse, biconditional, and at least one Euler diagram to support your answer. 2. Explain the purposes of inductive and deductive reasoning in mathematics. Be sure to ...
*December 9, 2010 by Julie*

**Physics**

A block of mass 3.00 kg is pushed up against a wall by a force P that makes an angle of = 30.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.25. (a) Determine the possible values for the magnitude of ...
*September 26, 2012 by Abraham*

**physics**

A 2.0 kg mass rests on a frictionless wedge that has an acceleration of 15 m/s2 to the right. The mass remains stationary relative to the wedge, moving neither higher nor lower. (a) What is the angle of inclination, θ, of the wedge, i.e., the angle between the inclined ...
*February 5, 2014 by Daryl Ann Waltenburg*

**History Thesis....**

can anyone help me is this a good thesis if not what can I change I am lost.... Harold Grey’s Little Orphan Annie comic strip provided a message that helped people get through the Great Depression, it is suggested that this comic strip provided America with understanding of ...
*November 5, 2009 by Deb*

**Chemistry**

Consider the below three solvents and the corresponding values of Kf for each. Prove, using the formula for Kf, which one of these solvents would allow for the most sensitive procedure for determining the molar mass by the freezing point depression method. Explain well to ...
*February 13, 2012 by Heaton*

**social studies please help **

what sis franklin roosevelt do to reduce the effects of the depression the day after he became president? a. he closed the stock market to prevent further losses b. he signed a bill to provide money to industries so they could reopen and put people back to work c. he closed ...
*April 8, 2014 by what*

**Grammar **

Is the following senetence considered an run-on one? Should I revise it? "To Kill a Mockingbird by Harper Lee features the esteemed novel’s protagonist, a young girl named Jean Louise “Scout” Finch who lives with her beloved older brother, Jem (Jeremy), and their father, ...
*April 15, 2014 by Victoria*

**PHYSICS**

A certain kind of glass with index of refraction of 1.65 for blue light of wavelength 430nm and index of refraction 1.615 for red light with wavelength 680nm. If a beam of light containing these two colors has incident angle of 30 degrees what is the angle inside the glass? I ...
*March 27, 2008 by nat*

**Physics**

A soccer player kicks a ball from the ground into the goal, which is located 17 meters away on the level playing field. The ball leaves the ground at an initial speed of 18m/s and at an initial angle above the horizontal of 23 degrees. Find the angle of the ball's velocity (...
*October 19, 2009 by Bill*

**Physics**

You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.9 m/s at an angle of 26.0° upstream, what is the speed of the jet ski relative to the water? (Note: Angles are measured relative ...
*October 14, 2012 by HELP PLEASE*

**Psychology 220**

# 1.55 (1 pts.) Which of the following information led Dr. Tobin to conclude that Peter was suffering from bipolar disorder? A) the fact that he reported having intense bouts of anxiety B) the fact that he had recently been married and soon after was divorced C) the fact that ...
*December 9, 2012 by G. KAY*

**physics**

A 56.0-kg skater is traveling due east at a speed of 2.80 m/s. A 77.0-kg skater is moving due south at a speed of 4.40 m/s. They collide and hold on to each other after the collision, managing to move off at an angle south of east, with a speed of vf. Find (a) the angle and (b...
*October 16, 2008 by chris*

**Physics**

Two blocks rest on two frictionless ramps. They are connected at the apex of each ramp by a string and pulley. The angle of ramp A with the ground is 45 degrees. Mass of Block B (on Ramp B) is 2 times that of Block A. What does the angle of Ramp B with the ground have to be in...
*October 16, 2012 by Neil*

**physics**

A 59.0-kg skater is traveling due east at a speed of 1.80 m/s. A 61.0-kg skater is moving due south at a speed of 6.20 m/s. They collide and hold on to each other after the collision, managing to move off at an angle south of east, with a speed of vf. Find (a) the angle and (b...
*October 22, 2012 by sammy*

**Calc**

Hi! Please help :-) Find an equation for the circle of the curvature of the curve r(t) = ti + (sint)j at the point (pi/2, 1) (The curve parametrizes the graph of y = sinx in the xy-plane)
*December 9, 2007 by Sadie*

**calculus**

The problem asks: A curve i nthe plane is defined parametrically by the equation x = t^3 + t and y = t^4 + 2t^2. An equation of the line tangent to the cerve at t = 1 is...? please help. thanks!
*December 2, 2008 by Nina*

**physics**

plane traveling 200 km/hr with supplies for people 110 meters below. how many second before do they have to drop the supplies
*September 21, 2010 by tom*

**science**

an airplane normally flies at 200 km/h, what is the resultant velocity of the plane if it experiences a 50 km/h tail wind, and a 50km/h head wind
*October 11, 2010 by jemimah*

**physics**

If you have a 900cm2 plane mirror 45 cm in front of you and can just see the full length of an 8.5m flagpole behind you how far are you from the flagpole?
*October 16, 2010 by Help with Physcis*

**Physics**

An airplane flies at 65 m/s in the direction 149 degrees counter clockwise from east. What are the east and north components of the plane's velocity?
*January 19, 2011 by Kylee*

**Calculus**

The base of a solid is the region bounded by the parabola y^2=4x and the line x=2. Each plane section is perpendicular to the x-axis is a square. What id the volume of the square?
*April 3, 2011 by Amanda*

**Geometry**

how many planes can be passed through two points in space? and is there exactly one plane containing two nonparallel lines?
*May 15, 2011 by Camile*

**Physics**

A planet has a mass of 6.06x 10^23 kg and a radius of 3.99 x 10^6 m. a) What is the acceleration due to gravity on this planet? b) how much would a 72.5 kg person weigh on this plane?
*July 12, 2011 by Kristi*

**physics**

A particle moving in the xy plane under goes displacement s=(2i+3j)m while the constant force is given by F=(5i+2j)N.calculate the work done by the force F.
*April 2, 2012 by minas*

**physics**

A plane is moving east at 100. km/h while the air around it moves at 30. km/h east. Find VR and draw a vector sketch.
*September 3, 2012 by Elizabeth*

**physics**

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

**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 by kayla*

**physic**

a plane aims north at 450.0km/hr. the wind blows from the south at 100.0km/hr. what is the planes ground velocity.
*May 16, 2013 by Adil*

**Algebra**

A plane has a speed of p km/h in still air. It makes around trip flying with and against the wind of w km/h.Show that its average speed is p^2-w^2/p km/h
*November 5, 2013 by Jennifer*

**Algebra**

A plane has a speed of p km/h in still air. It makes around trip flying with and against the wind of w km/h.Show that its average speed is p^2-w^2/p km/h
*November 5, 2013 by Jennifer*

**Calculus**

Find parametric equations for the line through the point (0,2,2)that is parallel to the plane x+y+z = 2 and perpendicular to the line x=1+t, y=2−t, z=2t. (Use the parameter t.) (x(t), y(t), z(t)) =
*January 31, 2014 by Jale*

**math**

What is;the average speed in miles per hour for a plane that was :filled with 13 quarts of oil that flies a distance of 3,300 miles
*February 14, 2014 by Anonymous*

**Math**

A model plane flies 18 ft per 2 seconds. What is the planes speed in miles per hour? Round to the nearest tenth.
*April 20, 2014 by Ava*

**physics**

what air speed and heading would enable a plane to travel [NE] with a ground speed of 275 km/h if there is a wind blowing at 55 km/h from the south?
*June 19, 2014 by joy*

**PHYSICS**

a mass of 2.00kg is pushed up a 50 degree incline. if muse of k is 0.400 and a force of 50.0 N is applied parallel to the plane, what is the acceleration of the mass?
*July 11, 2014 by EMMA*

**physics**

A small toy airplane is flying in the xy-plane parallel to the ground. In the time interval t=0 to t=10.0 s, its velocity as a function of time is given by
*September 27, 2014 by Anonymous*

**math help pls**

Two observers who are 5 km apart simultaneously sight a small airplane flying between them. One observer measures a 51.0-degree inclination angle, while the other observer measures a 40.5-degree inclination angle. At what altitude is the airplane flying?
*April 12, 2010 by Ghanny*

**Math**

to measure the height of the Eiffel Tower in Paris, a person stands away from the base and measures the angle of elevation to the top of the tower to be 60 degrees. Moving 210 feet closer, the angle of elevation to the top of the tower is 70 degrees. How tall is the Eiffel Tower?
*February 14, 2012 by Donielle*

**math**

A radio tower stands on the top of a hill that is 85 feet high. From the bottom of the hill, the elevation angle to the base of the tower is 42 degrees and the elevation angle to the top of the tower is 60 degrees. How tall is the tower? I would like to know what steps to take...
*May 6, 2012 by Victoria*

**trig**

(a) sketch an angle A in standard position whose terminal ray passses through the point (1,-4) (b) Find the exact value of the six trigonometric functions of A, (c) Let B be the reference angle of A. Find a point on the terminal rsy of B in standard position and add B to your ...
*September 15, 2012 by patrick *

**maths**

John wishes to determine the height of a flagpole. He takes a sighting of the top of the flagpole from point P. He then moves further away from the flagpole by 20 metres to point Q and takes a second sighting. Given the angle Q is 28 degrees and angle P is 53 degrees. Find how...
*June 7, 2014 by Shane*

**geometry**

line rs intersects line lm at p, angle rpl=x+y, lps=3x+2y, mps=3x-2y. solve for x and y find angle RPL, LPS, and MPS
*October 23, 2011 by sara*

**chem**

a compound containing only boron, nitrogen and hydrogen was found to be 40.3% B, 52.2%N, and 7.5% H by mass. If 3.301g of this compound is dissolved in 50.00g of benzene, the solution produced freezes at 1.30 degrees celsius. If Kf(freezing point depression constant) for ...
*November 7, 2008 by tomi*

**Trigonometry**

The Earth rotates on it's axis once every 24 hours. a)How long does it take Earth to rotate through an angle of 4pi/3? b)How long does it take Earth to rotate through an angle of 210 degrees?
*November 23, 2011 by Rebecca*

**Trig**

A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an angle of 39 degrees forty minutes with the first force. Find the magnitude of the second force. I have the answer, 814.3022, but I need to know how ...
*October 19, 2010 by Brittany*

**physics**

a man pulls an 80 kg sled up an incline that is at an angle of 25 degrees with the horizontal using a rope attached to the sled at an angle of 35 degrees. If the coefficient of friction between the sled and the incline is 0.70, what force must the man exert on the rope to keep...
*December 21, 2013 by Paul*

**Physics**

A flea pulls on a puck with force 7 microN at an angle of 30°. Another flea pulls on the puck with force 2 microN at an angle of -60°. a) What is the magnitude of the net force on the puck? (I got 7.28 uN) b)At what angle is the net force? ( I got about 14.07 deg) c) A third ...
*January 13, 2008 by Lindsay*

**Physics**

A thin aluminum ring hangs vertically from a torsion spring. A torsion spring when twisted exerts a restoring torque given by τ=−κθ where θ is the angle of twist. Suppose that the ring undergoes small torsional oscillations while it is being cooled ...
*July 1, 2013 by Nick*

**Physics**

A 23 kg suitcase is being pulled by a handle that is at an angle of 22 degrees above the horizontal. If the normal force exerted on the suitcase is 185 N, what is the force applied to the handle? *** Objects NOT on an incline they are being pushed/pulled at an angle along a ...
*December 7, 2009 by Corey*

**math**

Two observers who are 5 km apart simultaneously sight a small airplane flying between them. One observer measures a 51.0-degree inclination angle, while the other observer measures a 40.5-degree inclination angle. At what altitude is the airplane flying?
*April 12, 2010 by Ghanny*

**applications of vectors**

Two people are carrying a box. One person exerts a force of 150 pounds at an angle of 62.4 degrees with the horizontal. The other person exerts a force of 114 pounds at an angle of 54.9 degrees. Find the weight of the box.
*May 12, 2013 by Anonymous*

**psychology**

Marla is a 42-year-old Hispanic female who comes to the mental health clinic complaining of trouble sleeping, feeling “jumpy all of the time,” and an inability to concentrate. These symptoms are causing problems for her at work, where she is an accountant. ADHD BIPOLAR ...
*July 4, 2009 by Rose*

**math advanced functions**

a) Determine the measure of the central angle that is formed by an arc length of 5 cm in a circle with a radius of 2.5cm. Express the measure in both radians and degrees, correct to one decimal place. b) Determine the arc length of a circle in part a) if the central angle is ...
*July 24, 2012 by ashley*

**physics**

A mass makes a projectile motion on a table (like the one in the projectile motion experiment) with inclination angle of the table as α=6o. The initial velocity and the initial angle are is 100 cm/s and 30 deg. respectively. What is the maximum height hmax ? (sin(6)=0.1, ...
*December 21, 2012 by anonymous*

**math**

a man standing on ground level is 1000 feet away from the base of a 350 feet tall building. Find,to the nearest degree,the measure of the angle of elevation to the top of the building from the point on the ground where the man is standing? How do you solve for this measurement...
*May 27, 2014 by b8*

**Physics**

physics - drwls, Sunday, January 24, 2010 at 2:50am Compute the angle of the strings from vertical. It is sin^-1 (8.5/40) Call this angle A If the string tension is T T sin A = F (the Coulomb force) T cos A = M g tan A = F/Mg You need to say what the units of the mass are. All...
*January 25, 2010 by Lanise*

**trigonometry**

a surveyor finds that from Point A on the ground the angle of elevation to the top of a mountin is 23 degrees. when he is at point B that is 1/4 closer to the base of the mountain the angle of elevation is 43 degrees. how high is the moutnain? One mile =5280 feet. (Assume that...
*April 12, 2011 by carla*

**INTRO TO PHYSICS**

a) A simple pendulum consists of a small object of mass 3.3 kg hanging at the end of a 2.0-m-long light string that is connected to a pivot point.Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes a 4.5° angle with ...
*October 31, 2012 by Sandy*

**physics**

A 1.30 kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.400. To make the toaster start moving you carelessly pull on its electric cord. (a) For the cord tension to be as small as possible, you should pull at ...
*October 24, 2009 by blair*

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