Tuesday

July 29, 2014

July 29, 2014

Number of results: 11,424

**physics**

A 15kg model plane flies horizontally at a constant speed of 12.5 m/s and the kinetic energy is 1171J and the potential energy is 3000J what is the new horizontal velocity? Please show work and explain.
*January 17, 2011 by Kim*

**socials**

for another event in 1960 I draw U-2 spy plane and write beside it was shot down over Soviet territory, it a single seat, single-engine, high altitude, reconnaissance aircraft.
*December 5, 2011 by Mohammad*

**MATH**

On the xy-coordinate plane, point O is the origin. Suppose vector OE=(3,8) and vector OF=(-2,-4). What ordered pair represents vector EF? I tried graphing them but they don't even end up in the same quadrant. Not sure what to do..
*February 10, 2010 by JOE*

**ALGEBRA 1**

A JET FLIES WITH THE WIND AT 1100km/hr and 750 km/hr against the same wind. Find the rate of the wind and speed of the plane PLEASE INCLUDE THE EQUATION OR SET FOR SOLUTION
*May 29, 2012 by susana*

**Pre-Calc**

A pilot of an airplane flying at 12,000 feet sights a water tower. The angle of depression to the base of the tower is 25°. What is the length of the line of sight from the plane to the tower?
*November 24, 2012 by Peter*

**Dyanamics**

A particle of mass m moves in a x-y plane. the co-ordinates of the particle at any instant are given by x=acos(wt) & y=bsin(wt) where a,b,w are constsnt.Determine the angular momentum of the particle with .r.to the origin of the co-ordinate system
*December 6, 2013 by vinod*

**Physics**

You are given a vector in the xy plane that has a magnitude of 95.0 units and a y component of -40.0 units. What are the two possibilities for its x component?
*October 6, 2008 by H.Pales*

**Science**

Specifically, where is the fault plane located at a normal fault? near the top? near the bottom?
*March 10, 2009 by Angie*

**Geometry**

A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,-3) what are the coordinates of the endpoints of the other diagonal?
*November 4, 2010 by alex*

**math**

A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,-3) what are the coordinates of the endpoints of the other diagonal?
*November 4, 2010 by alex*

**calc**

If a particle moves in the xy-plane so that at time t>0 its position vector is (e^(t˛), e^(-tł)), then its velocity vector at time t=3 is...? Thanks so much!
*April 25, 2011 by Erica*

**Algebra I**

"A car is traveling at r speed. A plane is traveling at 5r speed. When will they both reach 200 miles?"
*May 23, 2011 by Beth*

**physics**

You are given a vector in the plane that has a magnitude of 86.0 units and a component of -30.0 units. What are the two possibilities for its component?
*October 8, 2011 by dj*

**physics**

You are given a vector in the xy plane that has a magnitude of 90.0 units and a y component of -40.0 units. What are the two possibilities for its x component?
*September 30, 2012 by michael*

**physics**

You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -60.0 units. What are the two possibilities for its x component?
*September 30, 2012 by joe*

**Physics**

A small dog sits 1.5 m in front of a plane mirror. Where is the dog's image in relation to the mirror?
*February 13, 2013 by Madison*

**physics 102**

An aluminum wing on a plane is 30.6 m long when the temperature is 20 oC. At what temperature would the wing be 0.06 m shorter
*April 27, 2013 by pocholo*

**Math **

There are two points A=(2,0) and B=(4,0) and a moving point P=(t,t) on the xy-plane. If the minimum value of line AP+ line BP is b, what is the value of b^2?
*June 28, 2013 by Drake*

**math**

In the standard (x,y) coordinate plane, the graph of (x + 3)2 + (y + 5)2 = 16 is a circle. What is the circumference of the circle, expressed in coordinate units?
*August 14, 2013 by J*

**Geometry**

Paragraph proof: in the figure AC and BD LIE IN PLANE j and BY AND CX lie on k C and D are collinear. 2.) points a c and x are coplanar. 3.) X and Y are collinear
*September 6, 2013 by CASSIE*

**italian**

I realy dont want this with a computer translation because it never comes out the right way could someone translate it for me? If I won 1.000.000 dollars I would go to Sardegna with all my friends for a whole year.To get their since we live in America we would take a plane ...
*March 23, 2009 by joshua*

**physics**

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have an appreciable ...
*February 20, 2010 by Anonymous*

**Physics**

What must be the minimum height of a plane mirror so that a boy of height 162 cm can view himself from head to toe? A. 40.5 cm B. 81 cm C. 162 cm D. 324 cm It would be B. 81 cm?
*April 5, 2009 by sophie*

**ALGEBRA!!**

calculate P(i) for the following polynomial p(x)=x3+2x2-5x+8 Find | z | for each of the following complex numbers and represent them on a complex plane. a. z=-3-4i b. v=5-12i c.u=7+24i d.w=-9+40i e.p=1+3i f.t=-2i g.n=4 h.m=0 i.s=(√3-i)2
*October 7, 2010 by natali*

**physics**

The plane is flying horizonally at 40m/s at an altitude of 125 m when it drops a bomb. determine how far horizonally from the target you should release the bomb
*June 12, 2011 by Kylie*

**central science**

what is the velocity of a plane that is 475m above the ground, if it drops a dead cat and the cat hits the ground 850m horrizontally from where it is droped
*October 28, 2011 by shaya*

**Physics**

A uniform electric field of magnitude 2.70×10^4 N/C makes an angle of 37 degrees with a plane surface of area 1.60×10^−2 m^2 . What is the electric flux through this surface?
*January 23, 2012 by Cooper*

**physics**

A uniform electric field of magnitude 2.80×10 ^4 N/C makes an angle of 37 degrees with a plane surface of area 1.40×10−2 m^2. A)What is the electric flux through this surface? N * m^2/C
*January 27, 2012 by jazz*

**physics**

A uniform electric field of magnitude 2.80×104 makes an angle of 37 with a plane surface of area 1.60×10−2 .What is the electric flux through this surface?
*February 4, 2012 by David*

**geometry**

quadrilateral JKLM is graphed in the coordinate plane.Classify quadrilateral JKLM as specifically as possible.Show your work, and explaine why your answer is correct?
*February 16, 2012 by Anonymous*

**Geometry**

Is it possible for a cross section of a cube to these shapes.... -pentagon -isosceles triangle -scalene triangle ..... If so, please describe how the plane intersects the cube. Thanks!!!!
*January 16, 2013 by Bridgett*

**Algebra and Trigonometry **

A plane if flying at 200 mph with a heading of 45 degrees and encounters a wind of 100 mph from the west. What is the resulting velocity and heading?
*March 3, 2013 by Sarah*

**math**

If an airplane travels at 300 mph with no air resistance, and it travels directly south with a wind of 50 mph east, how fast is the plane going?
*March 24, 2014 by tarra*

**trig**

An airplane has air speed of 540 mph and a heading of 50*. The wind is blowing from the north at 27 mph. Find the plane's ground speed and course direction.
*April 10, 2014 by Marlo*

**Calculus**

Consider the differential equation dy/dx=xy-y. Find d^2y/dx^2 in terms of x and y. Describe the region in the xy plane in which all solutions curves to the differential equation are concave down.
*May 1, 2014 by Michelle*

**history**

please help me with this because of its reliance on aircraft to carry nuclear weapons, the United States lagged behind the Soviet Union in a. hydrogen bomb testing b. spy plane technology c. missile development d. destroyer and cruiser construction thanks :)
*April 20, 2009 by history*

**Medical Physics**

A 18000kg airplane lands with a speed of 77 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by nonconservative forces in stopping the plane. I have an exam on this tomorrow and I am confused any help would be appreciated.
*October 13, 2009 by Leah*

**Science/Math??**

If object A has mass Ma and object B has mass Mb, then the force F on object A is directed toward object B and has magnitude of F = G Ma Mb / r2 That would be the correct gravitational force, and the direction IS directed toward object B. True
*July 28, 2007 by Joey*

**help,math**

can some set the equation up for me. Science and medicine. A plane flies 720 mi against a steady 30-mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane’s speed in still air? i thought it was this set up but its not...
*February 25, 2007 by jas20*

**ALGEBRA**

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where C is a constant, and...
*March 23, 2010 by GGIFT*

**Physics**

Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. It's measured that the object reaches half its terminal speed at 4.50 s. a) What is the terminal speed for this ...
*July 26, 2012 by Zac*

**Physics**

A solid object floats on ethyl alcohol, with 60.9% of the object's volume submerged. Find the density of the object.
*December 1, 2011 by Sami*

**computer science**

to write a report on Object-Oriented Systems. The report should focus on the following systems including definition, applications, and advantages and disadvantages. • Object-oriented Systems • Object-oriented database • Object-oriented data modeling • Object-oriented programming
*April 26, 2011 by pete*

**math**

Direct variation An airplane is traveling at a constant rate of 450 mi/h. Write an equation that shows how far the plane travels (D) in h hours. D = V * h = 450 h V is the speed, 450 miles/hour
*August 5, 2007 by joyce*

**math**

two lines intersect in a plane and form four angles. one of the angles formed by this intersection is a 53degree angle. What are the measures of the other three angles? explain your answer
*March 3, 2010 by zay*

**Physics**

Ball, with a weight of 200 grams, tied to a string rotates around in a horizontal plane. Period of rotation is 2 seconds. What is the force (in N) which acts on the string? The length of the string is 0.5 meters.
*December 8, 2010 by Steven*

**Physics**

Standing 2.5 m in front of a plane mirror with your camera, you decide to take a picture of yourself without turning the camera around. To what distance should the camera be focused to get a sharp image?
*May 30, 2012 by Bob*

**physics**

a particle of mass m moves in a x-y plane. The coordinates of the particle at any instant are given by x = acos(wt) and y = bsin(wt). where a,b,w, are constant. Determine the angular momentum of the particle with respect to the origin of the coordinate system.
*October 21, 2013 by Sarsi*

**physics**

An airplane has a mass of 33500 kg and takes off under the influence of a constant net force of 41500 N. What is the net force that acts on the plane's 82 kg pilot?
*October 3, 2010 by gabe*

**Physics**

An airplane flies at 200.0 km/h relative to the air. What is the velocity of the plane relative to the ground if it flies during the following wind conditions? a. a 50.0-km/h tailwind b. a 50.0-km/h headwind.
*October 3, 2010 by Melissa*

**Physics**

An airplane flies due north at 145 km/h with respect to the air. There is a wind blowing at 65 km/h to the east relative to the ground. What is the plane's speed relative to the ground?
*October 6, 2010 by Preston*

**Physics**

An airplane flies due north at 160 km/h with respect to the air. There is a wind blowing at 80 km/h to the east relative to the ground. What is the plane's speed relative to the ground?
*November 21, 2010 by Daniel*

**physics**

An airplane has a mass of 34,500 kg and takes off under the influence of a constant net force of 45,000 N. What is the net force that acts on the plane's 80 kg pilot?
*January 25, 2012 by Anonymous*

**physics**

A particle starts from the origin with a velocity of 6.0 i m/s and moves in the xy plane with a constant acceleration of (-2.0i + 4.0j)m/s^2 . at he instant the particle achieves maximum positive x-coordinate, how far is it from the origin?
*December 9, 2012 by Anya *

**physics**

An airplane has a mass of 32272.2 kg and takes off under the influence of a constant net force of 39990.0 N. What is the net force that acts on the plane's 78.5 kg pilot?
*September 20, 2013 by paul*

**calculus**

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)=3+e^4−x
*September 27, 2013 by Miriam*

**trig**

A pilot is flying at 10,000 feet and wants to take the plane up to 20,000 feet over the next 50 miles. What should be his angle of elevation to the nearest tenth?
*January 8, 2014 by Reg*

**Math (Calculus)**

Use the shell method to find the volume of the solid generated by revolving the plane region about the indicated line. y=4x-x^2, y=0, about the line x=5
*May 8, 2014 by Sherman*

**Math**

Three points D, E, and F are collinear. Is there only one plane that contains these three points?
*October 12, 2009 by Matt*

**(act practice)**

In the standard (x,y) coordinate plane, point M with coordinates (5,4) is the midpoint of AB, B has coordinates (7,3). What is the coordinate of A?
*June 10, 2010 by Megan L J*

**science**

How much work does it take to raise a 3kg object 5m into the air? (a) What is the potential energy of the object when it is 5m in the air? (b) What does this tell you about the potential energy you get when you do work to lift an object? (c) If you drop the object, how fast is...
*October 22, 2011 by Ali*

**Physics**

A 2kg object is attached to a spring and undergoes simple harmonic motion. At t=0 the object starts from rest, 10 cm from the equilibrium position. If the force constant of the spring k is equal to 75 N/m, calculate a. the max speed b. the max acceleration of the object. Fine ...
*January 21, 2013 by Mary*

**math/ confused!**

What degenerate form or forms of the parabola CANNOT be obtained from the intersection of a plane and a double napped cone? I have to use a diagram and give complete description how to obtain this ( or these) form(s) how would I do this question
*December 4, 2006 by edwen!*

**6th grade Art**

Draw your hand in 3 different appropiate positions. Include nails and all of the creases in your skin. Add values and contrast. Fill in the entire picture plane. Include a background
*September 27, 2009 by 6th Grade MP1 Sketchbook Assignments*

**6th grade Art**

Draw your hand in 3 different appropiate positions. Include nails and all of the creases in your skin. Add values and contrast. Fill in the entire picture plane. Include a background
*September 27, 2009 by 6th Grade MP1 Sketchbook Assignments*

**Physics**

A F-14 (mass 2 tonne) aircraft lands on an aircraft carrier. It must reduce its velocity from 130kmh to rest. If the grappler hooks can exert 75 000N of tension, what time will it take to bring the plane to a stop?
*April 18, 2010 by Anonymous*

**math/calculus**

You are given the four points in the plane A(-3,6),B(0,-6),C(5,7),D(8/-7) . The graph of the function f(x) consists of the three line segments AB ,BC and CD . Find the integral f(x)from -3 to by interpreting the integral in terms of sums and/or differences of areas of ...
*April 23, 2010 by Mattie Boren*

**math/calculus**

You are given the four points in the plane A(-3,6),B(0,-6),C(5,7),D(8/-7) . The graph of the function f(x) consists of the three line segments AB ,BC and CD . Find the integral f(x)from -3 to by interpreting the integral in terms of sums and/or differences of areas of ...
*April 23, 2010 by Mattie Boren*

**physics**

The pilot of an airplane traveling 240 km/h wants to drop supplies to flood victims isolated on a patch of land 160 m below. The supplies should be dropped how many seconds before the plane is directly overhead?
*September 21, 2010 by Sarah*

**Physics (Projectile Motion)**

Please reply to this one urgently: Horizontally moving plane at 600kmph speed, at a height of 1960km, drops a package at point A and it drop at point B. Find the distance between A and B.
*September 28, 2010 by Lost In Studies*

**Math: Calculus**

You are given the four points in the plane A = (5,-6), B = (9,1), C = (14,-6), and D = (19,2). The graph of the function f(x) consists of the three line segments AB, BC and CD. Find the integral f(x)dx from 5 to 19 by interpreting the integral in terms of sums and/or ...
*November 17, 2010 by REALLY NEED HELP!!!!*

**Physics**

An airplane is flying in a horizontal circle at a speed of 105 m/s. The 76.0 kg pilot does not want the centripetal acceleration to exceed 6.35 times free-fall acceleration. a) Find the minimum radius of the plane’s path. Answer in units of m.
*January 9, 2011 by BIlly*

**Physics**

An Alaskan rescue plane traveling 36 m/s drops a package of emergency rations from a height of 137 m to a stranded party of explorers.Where does the package strike the ground relative to the point directly below where it was released
*November 3, 2011 by Katie*

**physics**

An airplane moves 243 m/s as it travels around a vertical circular loop which has a radius of 1.2 km. What is the magnitude of the normal force on the 100 kg pilot of this plane at the bottom of this loop? The acceleration of gravity is 9.8 m/s 2 . Answer in units of k
*December 12, 2011 by Ryan*

**science**

The pilot of an airplane traveling 180km/h wants to drop supplies to flood victims isolated on a patch of land 160m below. The supplies should be dropped how many seconds before the plane is directly overhead?
*August 22, 2013 by Kayla*

**materials science engineering**

Identify the [221] vector.(crystallographic directions qns) The answer given corresponds to 0.5 in x direction,0.5 in y and 1 in z. Why is it not [1 1 0.5], the simply reduced form. The ans is the reciprocal of [221], which puzzles me since this is not a plane.
*January 25, 2014 by miguel*

**Physics please help!**

An object is moving along a straight line and the uncertainty in its position is 1.1 m. (a) Find the minimum uncertainty in the momentum of the object. (b) Find the minimum uncertainty in the object's velocity, assuming that the object is a golf ball (mass = 0.045 kg). (c) ...
*April 21, 2012 by linds*

**Physics**

A 1m^3 object is floating in water. A third of the object is submerged. How much does the object weigh?
*May 19, 2010 by Ally*

**physics**

8 kg object is being pulled on friction free surface by 110 kg object through a pulley find acceleration of 8 kg object
*October 21, 2009 by Anonymous*

**general science**

if an object is thrown 60 m into the air and it takes the object 6 s to get there, what's the average speed of the object? (A) 20m/s (B) 360 m/s (C) 100 m/s (D) 10 m/s
*May 5, 2014 by christina*

**physics**

A student drops an object from a fourth floor window. The velocity of the object is measured at 29.28 m/s 3.0 seconds later. What is the acceleration of the object?
*June 11, 2014 by Anonymous*

**physics**

A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
*November 26, 2006 by Dee*

**physics**

A 0.20 kg object, attached to a spring with spring constant k = 10 N/m, is moving on a horizontal frictionless surface in simple harmonic motion of amplitude of 0.080 m. What is its speed at the instant when its displacement is 0.040 m? (Hint: Use conservation of energy.)
*July 31, 2011 by Anonymous*

**science**

A 0.20 kg object, attached to a spring with spring constant k = 10 N/m, is moving on a horizontal frictionless surface in simple harmonic motion of amplitude of 0.080 m. What is its speed at the instant when its displacement is 0.040 m? (Hint: Use conservation of energy.)
*July 31, 2011 by Anonymous*

**physics**

A 9.10-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is sliding on a flat table. Taking the coefficient of kinetic friction as 0.203, find the tension in the string.
*October 2, 2011 by Anonymous*

**Physics**

A 8.90-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is sliding on a flat table. Taking the coefficient of kinetic friction as 0.150, find the tension in the string.
*September 20, 2013 by Anonymous*

**physics-quick question**

If you have a rectangular loop of area A placed in a region where the magnetic field is perpendicular to the plane of the loop, than would the emf be zero because they are perpendicular?
*April 16, 2008 by Jessica*

**physics help!!**

a plane moving horizontally at 120 m/s drops a package from an elevation of 240 m. How far did the package go before it hit the ground? Step by step directions please!
*October 20, 2008 by Hayden*

**physics**

A beam of light is incident on a flat piece of polystyrene at an angle of 55 degrees relative to a surface normal. What angle does the refracted ray make with the plane of surface? thank you
*February 25, 2009 by sam*

**math**

The scale used to build a model of a Boeing 747 is 1:80. Find the actual wingspan of the plane giving the the wingspan of the model was 75 centimeters. Express your answer in meters.
*March 24, 2009 by Paco Mendoza*

**Physics**

would it be possible to view your body from head-to-toe, while standing in front of a plane mirror that is only as tall as you? this is in the chapter mirror on my physics books
*May 2, 2010 by Luis*

**Physics**

A 4.52 kg block slides down a smooth, fric- tionless plane having an inclination of 31◦ . The acceleration of gravity is 9.8 m/s2 . Find the acceleration of the block. Answer in units of m/s2.
*October 16, 2010 by Alejandra*

**Trig/Precal**

An airplane flies on a compass heading of 90° at 310 mph. The wind affecting the plane is blowing from 332° at 40 mph. What is the true course and ground speed of the airplane?
*July 6, 2012 by Lauren T*

**science**

Your airplane just ran out of gas. Your plane is falling at a velocity of 80m/sec down. At that velocity, how long will it take your airplane to reach the ground?
*October 4, 2012 by Bokyung*

**Math**

A plane will normally cover 52 km in 12 min in still air. On one trip she flew with the wind for 2.5 hr. returning, she still had 100 km to go after 3.5 hr. what was the wind speed?
*November 19, 2012 by Kay*

**Math**

A plane will normally cover 52 km in 12 min in still air. On one trip she flew with the wind for 2.5 hr. returning, she still had 100 km to go after 3.5 hr. what was the wind speed?
*November 19, 2012 by Kay*

**Pre-Cal.**

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)=3+lnx
*December 30, 2012 by phyllys*

**Physics**

A rotating uniform-density disk of radius 0.7 m is mounted in the vertical plane. The axle is held up by supports that are not shown, and the disk is free to rotate on the nearly frictionless axle. The disk has mass 5 kg. A lump of clay with mass 0.3 kg falls and sticks to the...
*November 8, 2012 by Udit*

**physics**

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. Cannot be determined. 2. The object is an insulator. 3. The object is a conductor.
*February 20, 2010 by Anonymous*

**physics**

An object is moving along a straight line. The graph shows the object's velocity as a function of time. . What is the acceleration of the object in the interval from t = 5 s to t = 6 s?
*January 30, 2011 by thaokieu*

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