Thursday

October 23, 2014

October 23, 2014

Number of results: 98,002

**Physics**

1. A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N]. 2. A pilot is flying from City A to City B which is 300 km [NW]. If the plane will encounter ...
*April 24, 2014 by Corey Brown*

**mechanics**

An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the mass just come to rest ...
*February 6, 2012 by juan*

**physics**

An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the mass just come to rest ...
*February 6, 2012 by jason*

**Physics**

How do you find the coefficient of friction of an object sliding down an inclined plane. Given: m = 10 kg length of plane = 5.0 m Height of plane = 2.5 m
*January 4, 2009 by Megan*

**physics**

A cart is propelled over an xy plane with acceleration components ax = 5.1 m/s2 and ay = -2.9 m/s2. Its initial velocity has components v0x = 8.2 m/s and v0y = 11.2 m/s. In unit-vector notation, what is the velocity of the cart when it reaches its greatest y coordinate?
*October 7, 2012 by tatiana*

**physics**

A body moving with uniform acceleration has a velocity of 9.8 cm/s when its x coordinate is 1.38 cm. If its x coordinate 1.4 s later is -8.1 cm, what is the magnitude of its acceleration? Answer in units of cm/s2
*August 24, 2011 by Jean*

**physics**

A body moving with uniform acceleration has a velocity of 9.9 cm/s when its x coordinate is 1.28 cm. If its x coordinate 1.3 s later is -9.1 cm, what is the magnitude of its acceleration? Answer in units of cm/s2.
*August 25, 2011 by Hannah*

**physics**

An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration?
*October 2, 2011 by Johna*

**physics**

An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration?
*October 2, 2011 by Johna*

**statistics**

a point is randomly selected within the rectangle with vertices at (2,0), (2,2), (-4,2), and (4,0). What is the probability that the point's x-coordinate and y-coordinate are both positive?
*January 4, 2012 by luckybee*

**COORDINATE GEOMETRY**

A RAY OF LIGHT ORIGINATES FROM A(1,2) AFTER REFLECTION ON X-AXIS AT POINT A REFLECTED AT POINT Q(5,3). FIND COORDINATE OF A
*September 6, 2014 by ASHMITA*

**physics**

A block of mass 39 kg lies on an inclined plane, as shown. The horizontal and vertical supports for the plane have lengths of 36 m and 15 m, respectively, and the coefficient of kinetic friction between the plane and the block is 0.3. The magnitude of the force ~F necessary to...
*October 6, 2010 by christine*

**physics**

A body moving with uniform acceleration has a velocity of 10.2 cm/s when its x coordinate is 3.73 cm.If its x coordinate 2.33 s later is −2.74 cm,what is the x-component of its acceleration?Answer in units of cm/s^2
*September 3, 2012 by selena*

**physics**

An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?
*September 6, 2011 by Zohal*

**physics**

An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?
*September 6, 2011 by Zohal*

**Physics **

A plane is flying west at 214 km/h. The wind is blowing south at 108km/h. a what is the ground speed of the plane b In what direction does the plane travel
*January 31, 2012 by Shekinah*

**conceptual physics **

you are in a plane traveling due North at 325 km/hr. The plane encounters a headwind (South) wind of 50 km/hr. What is the resultant velocity of the plane?
*September 24, 2014 by harper*

**college calculus**

a point is moving on the graph of xy=30. when the point is at (6,5), its x-coordinate is increasing by 6 units per second. how fast is the y-coordinate changing at the moment
*March 31, 2010 by daren*

**college calculus**

a point is moving on the graph of xy=30. when the point is at (6,5), its x-coordinate is increasing by 6 units per second. how fast is the y-coordinate changing at the moment
*March 31, 2010 by daren*

**Physics**

An object moving with uniform acceleration has a velocity of 12m/s in the +ve x-direction,when its x-coordinate 3cm.if its x-coordinate 2sec. later is -5cm ,what is the acceleration?
*November 25, 2012 by Minte*

**math**

in which quadraints are the signs of the first and second coordinate the same? the signs of the first and second coordinate are always the same in quadrants type I, II, III, or IV. use a comma to separate answers as needed
*September 28, 2010 by Anonymous*

**math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*September 11, 2014 by Barbara*

**math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*September 11, 2014 by Tish*

**math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*September 12, 2014 by Alana*

**Geometry HELP**

A line segment has one endpoint at the coordinate (0, 1) and a midpoint at the coordinate (2, 4). Find the other endpoint. a.)(1, 7) b.)(4, 7) c.)(1, 25)
*June 4, 2010 by Ariel*

**math**

At an airport, a flight controller was in a tower 40m above the ground. When she first observed a plane it was at an angle of elevation of 12 (degrees) from her line of sight and flying at a constant altitude (height) The plane had a constant speed of 360km/h Eight seconds ...
*May 19, 2013 by alice*

**college algebra**

Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane f(x)=4+e^-x/3 please help me! show steps also, if i an just given an answer that wont help me! thanks in advance!!!
*August 28, 2012 by samantha*

**Calculus**

A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant.
*April 29, 2013 by Lizzy*

**Physics**

A body moving with uniform acceleration has a velocity of 11.1 cm/s when its x coordinate is 4.6 cm. If its x coordinate 1.75 s later is −4.29 cm, what is the x-component of its acceleration? Answer in units of cm/s2. How would I set this up?
*October 5, 2013 by Tre*

**Math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*September 12, 2014 by Alana*

**Physics**

A 20 kg box approaches the foot of a 30 degree inclined plane with a speed of 10 m/s. the coefficient of friction between the box and the inclined plane is 0.2. (a) How far up the inclined plane will the box go? (b) If the box slides back down the inclined plane, what is its ...
*June 30, 2014 by Clair*

**Math**

Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . I got that which is x=2/(2a+1), y=(1+2a)/(2a+1) <-intersection point I need help is to: Find a (a=alpha sign) ...
*October 9, 2009 by SC*

**physics**

"Charges of 2.00uc and -3.00uc are located in a coordinate plane at(2.00cm, 5.00 cm) and (3.00cm, 2.00cm) respectively. calculate the magnitude and direction of the electric field created by this pair at the origin. express your answer in both polar and rectangular form"
*February 1, 2011 by seahill*

**physics**

A body moving with uniform acceleration has a velocity of 11.1cm/s when it's coordinate is 3.59cm. If it's x coordinate 2.48sec later is -3.58cm, what is the x-component of it's acceleration. Answer in units of cm/s^2
*September 16, 2012 by Emily*

**Calculus**

A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?
*May 1, 2013 by Kate*

**Math**

Could someone help me with these questions? Thanks! a) A cargo plane left Vancouver, British Columbia (time zone −8) at 3:00 p.m. on a Monday. The plane ﬂew for 11 h to Paris, France (time zone +1). At what local time and on what day did the plane land in Paris? b...
*February 5, 2014 by Chelsea*

**Math**

A plane takes off from a local airport. It travels due north at a speed of 400km/h. The wind blows the plane due east at a speed of 50 km/h. How far is the plane from the airport after 1h. Give your answer to one decimal place
*October 15, 2014 by John*

**Physics**

A supersonic jet travels at 3.0 Mach (i.e. at three times the speed of sound). It cruises at 20,000 m above the ground. we choose t=0 when the plane passes directly overhead of an observer. At what time t will the observer hear the plane? -- there is a diagram of a person ...
*January 31, 2010 by Katelynn*

**physics**

Three particles of masses 14 kg, 21 kg, and 69 kg are located at the vertices of an equilateral triangle of sides 7 m. A)Find the x-coordinate of the center of gravity of this system with respect to a coordinate system with origin at the 14 kg particle and with the 21 kg ...
*November 4, 2012 by maura *

**Math**

Find an equation of a plane through the point (2, -1, 0) which is parallel to the plane -1x-2y+4z=7.
*February 2, 2010 by Derek Abeyta*

**math**

A plane is 11.9 miles off the ground as it makes its descent to land at the Metropolitan airport (46 miles away). The pilot aims the plane downward at a 12-degree angle. To the nearest mile, what distance will the plane have to travel in the air to land at the airport?
*July 16, 2013 by Anonymous*

**physics**

a small plane takes off at a constant velocity of 50 km/h of 37 degrees. at 3.00 s (a) how high is the plane above the groundand (b)what horizontal distance has the plane travelad from the liftoff point?
*January 1, 2008 by melissa*

**Physics**

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
*April 21, 2014 by Corey Brown*

**Physics**

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
*April 22, 2014 by Corey Brown*

**Physics**

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
*April 22, 2014 by David DiFranco*

**Physics**

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
*April 23, 2014 by David DiFranco*

**Physics**

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
*April 23, 2014 by David DiFranco*

**sience**

a plane is flying due east in still air at 395km/h suddenly the plane is hit by wind blowing at 55km/h toward the west. what is the resultant of the plane?
*June 2, 2014 by anissa*

**Trig**

Sketch the graph through at least one complete cycle. Label the axes on the coordinate plane. Use your graph to predict the height of point P above the surface of the water when the stopwatch shows 7 seconds. Round to the nearest tenth of a foot. (Enter only the number.)
*June 21, 2012 by Jessica*

**math**

an early flight lasted for 12 seconds. The plane flew 144 feet. What is the plane's speed in ft/s?
*April 21, 2009 by tanya*

**Math**

LaQuisha has a sprinkler that waters a circular area. The diameter of the area that the sprinkler waters is 20 feet. The actual sprinkler is located at the origin of the coordinate plane. Write an equation that describes the circumference of the circular area that the ...
*June 9, 2010 by Quinn*

**calculus**

A particle moves along the curve y=square sqrt 1+x^3. As it reaches the point (2,3), the y-coordinate is increasing ata a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?
*October 25, 2010 by tim*

**Math Ms. Sue please help**

Flying to Kampala with a tailwind a plane average 158km/h. On the return trip the plane only averaged 112km/h while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air.
*February 28, 2013 by Anonymous*

**math**

light from point a makes an angle of 20 degrees to the horizontal plane. it is then reflected by plane mirror m. whta is the reflected light s perpendicular to the horizontal plane.
*February 6, 2013 by kitty*

**math**

A model plane is 1/48 the size of the actual plane.if the model plane is 28 inches long how long it's the actual plane
*January 23, 2014 by megan*

**Math, Related Rates**

Consider the hyperbola y = 1/x and think of it as a slide. A particle slides along the hyperbola so that its x-coordinate is increasing at a rate of f(x) units/sec. If its y-coordinate is decreasing at a constant rate of 1 unit/sec, what is f(x)? -I arrived at the answer f(x...
*September 10, 2013 by xavier*

**Engg Mechanics**

Blocks A and B of weight 200N and 100N respectively, rest on a 30 inclined plane and are attached to the post which is held perpendicular to the plane by force P, parallel to the plane, Assume that all surfaces are smooth and that the cords are parallel to the plane. Determine...
*June 8, 2014 by Kishore*

**math**

sketch the plane x+2y-z=6. if you need help,find a third line by letting z=0 and then graph the resulting equation in the xy plane
*August 13, 2014 by rvb*

**Geometry**

a line RS is perpendicular to plane p at R. If T is a second point not on. Can RT be perpendicular to plane P? Lines AB and LM are each perpendicular to plane P. Are AB and LM coplanar? Plan P is perpendicular to AB at B. Plane Q intersects AB at P. Can Q be perpendicular to AB?
*May 17, 2011 by Camile*

**math**

secret riddle worksheet riddle: why did the teacher wear sunglasses? 1) different x's _ _ _ _ _ _ _ _ 2) monomialor sum of monomials P O L Y N O M I A L 3) set of data graphed as ordered pairs in a coordinate plane S C A T T E R P L O T 4) 2 solutions that are the same _ _ _ ...
*May 7, 2007 by confused gurl*

**Pre-Calculus-Trig**

A woman on the top of a 448 foot high building spots a small plane. As she views the plane, its angle of elevation is 62 degrees. At the same instant a man at the ground-level entrance to the entrance to the building sees the plane and notes that its an angle of elevation is ...
*January 30, 2011 by Chloe Mack*

**math**

Two planes left at the same time from two airports which are 4,500 miles apart and flew toward each other. In 5 hours, they passed each other. The rate of the fast plane was twice the rate of the slow plane. Find the rate of each plane.
*January 17, 2013 by MP*

**Physics- Elena please help!**

Consider the following mass distribution, where x- and y- coordinates are given in meters: 7.0 kg at (0.0, 0.0) m, 3.0 kg at (0.0, 5.0) m, and 7.0 kg at (4.0, 0.0) m. Where should a fourth object of 5.0 kg be placed so that the center of gravity of the four- object arrangement...
*November 6, 2012 by Anonymous*

**Physics - Kinematics**

Qn: Ball 1 is launched up an inclined plane from the bottom of the plane with an initial speed that is the minimum speed for it just to reach the top of the plane. At the same moment as ball 1 is launched up the plane, Ball 2 is released from rest at the top of the plane. They...
*November 25, 2010 by Rod*

**Engg Mechanics**

Blocks A and B of weight 200N and 100N respectively, rest on a 30 inclined plane and are attached to the post which is held perpendicular to the plane by force P, parallel to the plane, as shown in fig. Assume that all surfaces are smooth and that the cords are parallel to the...
*June 7, 2014 by Kishore*

**Math - distance b etween a line and plane**

Find the distance between the parallel line and the plane. line: vector r = [2,0,1]+t[1,4,1] plane: 2x-y+2z=4
*August 28, 2010 by Shaila*

**physics**

three point particles are fixed in place in an xy plane. Particle A has mass mA = 3 g, particle B has mass 2.00mA, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00mA, is to be placed near the other three particles. What (a) x coordinate and (b) y coordinate ...
*January 2, 2011 by Anonymous*

**Science**

An artillery shell is fired with a minimal velocity of 400 m/s at 54 deg above the horizontal. To clear an avalanche, it explodes on a mountain side 40 s after firing. What is the X-coordinate relative to it's firing point? What is the Y-coordinate?
*February 25, 2011 by Christian*

**math**

one hundred feet directly overhead, a plane and a dirigible start flying due east. If the plane travels three times faster than the dirigible, what is the greatest angle of sight between the two vehicles from your position? Assume the plane passes from sight after 6000 feet.
*May 2, 2010 by Yen*

**Algebra 1--Please, help me!**

A city map is laid out on a coordinate plane. Elm Street is described by the line x + 2y = -6. Oak street intersects Elm Street at an right angle. Which of the following could be the equation for Oak Street? a. 2x + y = 5 b. -2x + y = 3 c. x + 2y = 4 d. -x - 2y = 8 My answer: d?
*June 9, 2014 by Victoria*

**algebra 2**

plane a is 40 mi south and 100 mi east of plane b. plane a is flying 2mi west for every mile it flies north, while plane b is flying 3 mi east for every mile it flies south. which plane must fly farther
*November 11, 2013 by Anonymous*

**physics**

a plane is flying with a constant speed along a straight line at an angle 60degree with the horizontal. the weight(W) of the plane is 90,000N and its engine provides a thrust(T)of 120,000N in the direction of flight . two additional forces are exerted on the plane :the lift ...
*February 11, 2012 by ash*

**Physics**

A plane weighing 220 kN (25 tons) lands on an aircraft carrier. The plane is moving horizontally at 67 m/s (150 mi/h) when its tail hook grabs hold of the arresting cables. The cables bring the plane to a stop in a distance of 84 m. (a) How much work is done on the plane by ...
*October 3, 2011 by John*

**Algebra**

Let A(4,3) B(5,8) and C(3,10) be three points in a coordinate plane. Find the coordinates of a point D such that the points ABC and D form a parallelogram with (a)AB as one of the diagonals (b)AC as one of the diagonals (c)BC as one of the diagonals
*September 18, 2011 by Amanda*

**physics**

A novice pilot sets a plane's controls, thinking the plane will fly at 2.50 * 2 to the 2nd power km/h to the north. if the wind blows at 75km/h toward the southeast, what will the plane's new resultant velocity be? use graphical techniques. Are you sure you don't mean the ...
*December 25, 2006 by yostina*

**Physics**

A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.4 m) while a constant force acts on it. The force has magnitude 2.3 N and is directed at a counterclockwise angle of 100° from the positive ...
*October 1, 2009 by Mario*

**Physics**

An object moves such that its x-coordinate is given by x(t) = 6.0 m - (1.5 m/s2) t3 and its y-coordinate is given by y(t) = (8.0 m/s) t - (1.0 m/s2) t2. What is the acceleration of the object at t = 3.5 seconds? Express your answers in unit vector notation.
*September 21, 2012 by josephz*

**math**

A tangent line is drawn to the hyerbola xy=c at a point P. 1) show that the midpoint of the line segment cut from the tangent line by the coordinate axes is P. 2) show that the triangle formed by the tangent line and the coordinate axes always has the same area, no matter ...
*October 16, 2007 by justin*

**Physics**

A small plane is 150km south of the equator. The plane is flying at 220km/h at a heading of 30 degrees to the west of north. In how many minutes will the plane cross the equator?
*October 14, 2012 by Cassie*

**physics**

(a) One blade of a pair of scissors rotates clockwise in the xy plane. What is the direction of for the blade? into the xy plane out of the xy plane clockwise counterclockwise (b) What is the direction of if the magnitude of the angular velocity is increasing in time? into the...
*October 2, 2012 by zina*

**Math **

What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to graph. Consider ...
*February 22, 2010 by AR*

**Math **

What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to graph. Consider ...
*February 22, 2010 by AR*

**Honors Physics **

A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The plane’s engines and brakes accelerate uniformly at –5.0 m/s2. Will the plane be able to land safely?
*October 16, 2012 by Jonathan*

**Physics**

A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.1 m) while a constant force acts on it. The force has magnitude 2.4 N and is directed at a counterclockwise angle of 100° from the positive ...
*October 30, 2009 by Corey*

**Physics**

A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.1 m) while a constant force acts on it. The force has magnitude 2.4 N and is directed at a counterclockwise angle of 100° from the positive ...
*November 2, 2009 by Karen*

**Physics**

A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.1 m) while a constant force acts on it. The force has magnitude 2.4 N and is directed at a counterclockwise angle of 100° from the positive ...
*November 4, 2009 by Karen*

**algebra**

In a coordinate plane, the points (2,4) and (3,-1) are on a line. Which of the following must be true? 1. The line crosses the x-axis. 2. The line passes through (0, 0). 3. The line stays above the x-axis at all times. 4. The line rises from the lower left to the upper right. ...
*March 29, 2013 by Eric*

**Physics**

Three masses are connected by massless rigid rods. Rods AC and CB have length l= 16.6 cm. If massA=115.0 g, massB=206.0 g, and massC=310.0 g, what are the coordinates of the center of mass? (Enter your answer for the x coordinate first, followed by the y coordinate.)
*November 15, 2010 by Bella*

**Math**

A plane leaves Boston at 10 am (Boston time) and flies non-stop to LA, 2700 miles away, at 580 miles per hour (mph). On the same route, a second plane is flying non-stop from LA to Boston at 620 mph. If the second plane lease LA at 10 am (LA time), how many miles from LA will ...
*January 22, 2013 by Jake*

**Physic Please Help**

A pilot direct his plane north and the plane's velocity in still air is 245km/hr. If there is a strong wind of 105km/hr blowing west, what is the ground velocity of the plane?
*May 28, 2013 by Sarah*

**math**

A plane flying a straight course observes a mountain at a bearing of 32.6° to the right of its course. At that time the plane is 6 km from the mountain. A short time later, the bearing to the mountain becomes 42.6°. How far is the plane from the mountain when the second ...
*March 31, 2010 by pepe*

**SCIENCE NEED HELP**

A plane travels from California to New York. The plane travels about 5000 km in 5 hours. What is the plane's velocity? (Give directions as North, South, East, or West.)
*February 12, 2013 by NEED HELP *

**physics**

An object of mass 50kg is placed on inclined plane at an angle of 30 degrees to the horizontal. The height of the plane is 250cm and it's length is 500cm. What is the workdone in moving the object down the plane?
*June 17, 2014 by wilfred nder*

**Math**

A plane flies 150km due south and then 150km on a bearing of 45 degrees Celsius. With repeat to it initial position, find a. How far south the plane is b. how far east the plane is is c. It bearing d. How far way it is
*June 7, 2011 by Isaac*

**math repost!!**

please help, i procrastinated and now this is due tomorrow!! A tangent line is drawn to the hyerbola xy=c at a point P. 1) show that the midpoint of the line segment cut from the tangent line by the coordinate axes is P. 2) show that the triangle formed by the tangent line and...
*October 16, 2007 by justin*

**Physics HELP!!**

Three masses are connected by massless rigid rods. Rods AC and CB have length l= 44.8cm. If massA=280.0g, massB=386.0g, and massC=739.0g, what are the coordinates of the center of mass? (Enter your answer for the x coordinate first, followed by the y coordinate.)
*November 12, 2012 by joane *

**algebra**

Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane -x/3 f(x)=4+e ( if this makes sense, not sure how else to show it. the -x/3 is after the e like -x/3 to the power of e) please...
*August 28, 2012 by samantha*

**Physics**

A block of mass m lies on a rough plane which is inclined at an angle č to the horizontal. The coefficient of static friction between the block and the plane is ě. A force of magnitude P is now applied to the block in a horizontal direction, towards the plane. Show that the ...
*May 13, 2012 by Anonymous*

**Physics**

As your plane speeds down the runway during takeoff, you decide to determine the acceleration of the plane. you take your yo-yo and note that when you suspend it, the string makes an angle of 22 degrees with the vertical. What is the acceleration of the plane?
*September 26, 2010 by Anonymous*

**physics**

The pilot of a plane looks at her speedometer to see that she is traveling at 165 km/h and she is heading north. An observer on the ground looks at the plane and it appears to be going 145 km/h. What is the velocity of the wind that is affecting the plane?
*October 19, 2011 by Joshua*

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