Monday

September 26, 2016
Number of results: 12,646

**Physics **

A bus travels 270 km south along a straight path with an average velocity of 89 km/h to the south. The bus stops for 25 min, then it travels 250 km south with an average velocity of 68 km/h to the south. How long does the total trip last? Answer in units of h

*September 9, 2011 by R.S. *

**Physics**

A bus travels 340 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 22 min, then it travels 230 km south with an average velocity of 75 km/h to the south. How long does the total trip last? Answer in units of h

*October 4, 2012 by Diondre*

**phys**

A toy airplane of mass 0.159 kg is tied to the ceiling with a string. The airplane moves in a horizontal circle of radius 2.97 m, with a constant speed of 1.51 m/s. What is the angle the string makeswith the vertical?

*December 7, 2009 by stacy*

**physics**

Consider a level flight turn of a propeller-driven airplane in which the airplane makes a complete circular turn in 1.6 min. If the plane's speed is 200 m/s, what is the radius of the circle?

*December 2, 2010 by kaitlyn*

**physics**

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 28, 2012 by Kristie*

**physics**

4 Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 31, 2012 by Jim*

**physics**

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 31, 2012 by christy*

**Physic **

If a clock in an airplane is found to slow down by 5 parts in 1013, (i.e., ∆t/∆to = 1.0 + 5.0 × 10. −13), at what speed is the airplane travelling? (Hint: You might need to use an expansion for y)

*August 22, 2012 by Sanaz*

**English**

1. When is the report due? It is due on Monday. 2. When is the book due? It is due on March 10th. (Are the short dialogues correct?) 3. What are you saying? 4. What are you speaking? 5. What are you talking about? (Are the three commonly used and grammatical?)

*March 9, 2010 by rfvv*

**Physics**

Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1500 kg and was approaching at 9.00 m/s due south. The second car has a mass of 700 kg and was approaching at 15.0 m/s due west. (a) Calculate the final velocity of the cars. (b) ...

*June 26, 2014 by Michelle*

**Physics**

An airplane flies due north at 250 km/h relative to the air. There is a wind blowing at 60 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*October 6, 2010 by Preston*

**Physics**

An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*November 9, 2011 by Martha*

**science**

An airplane flies due north at 235 km/h relative to the air. There is a wind blowing at 65 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*September 16, 2012 by mary *

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*October 25, 2012 by Maddie*

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*October 25, 2012 by Maddie*

**physic**

An airplane flies due north at 200 km/h relative to the air. There is a wind blowing at 70 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*December 5, 2012 by BILLY*

**physics**

⦁ Find the resultant vector (magnitude and direction) for the sum of: vector A which has magnitude 365 N at 48° south of west, vector B which has magnitude 224 N at 26° south of east, and vector C which has magnitude 488 N at 12° west of north. Express the direction of ...

*September 15, 2014 by chiamaka*

**geometry**

PLEASE HELP WITH A FEW QUESTIONS triangle ABC has side lengths 8, 15, and 17 do the side lengths form a pythagorean triple? the length of the hypotenuse of a 30-60-90 triangle is 7 find perimeter to approach the runway, a pilot of a small plane must begin a 10descent starting ...

*May 23, 2012 by brittany*

**Geom./Trig.**

an airplane flies directly overhead at 540mph. 1 minute later is seen at an angle of elevation of 34 degrees. how far did the airplane fly during that time? what is the elevation of the plane?

*March 28, 2012 by Emma*

**Physics**

HELP!!! Consider an airplane with a total wing surface of 140 . At a certain speed the difference in air pressure below and above the wings is 3.0 of atmospheric pressure.Find the lift of the airplane

*April 9, 2013 by Ericca*

**Science**

An airplane has to fly eastward to a destination 856 km away. If wind is blowing at 18.0 m/s northward and the air speed of the plane is 161 m/s. In what direction should the plane head to reach its destination. So I know the direction is south east but can someone give me the...

*April 30, 2008 by Jane*

**physics**

a plane flys 350 km south along a straight path with an average velocity of 125 km/h to the south. the plane has a 30 minute layover and then travels 220 km south with an average velocity of 115 km/h to the south. what is the average velocity of the trip

*November 13, 2012 by connor*

**trig**

an airplane leaves the airport and flies due west 150 miles and then 240 miles in the direction 200°40'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?

*March 26, 2010 by kat*

**Math**

An airplane leaves the airport and flies due west 170 miles and then 240 miles in the direction 200°30'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?

*February 14, 2012 by Joe*

**physics**

A bus travels 250 km south along a straightpath with an average velocity of 84 km/h to the south. The bus stops for 26 min, then it travels 240 km south with an average velocity of 70 km/h to the south. How long does the total trip last?

*September 20, 2010 by Taylor*

**Calculus & Vectors**

A search and rescue aircraft, travelling at a speed of 240 km/h starts out at a heading of N 20 degrees West. After travelling for 1h and 15 min, it turns to a heading of N 80 degrees E and continues for another two hours before returning to base. Find the total distance the ...

*February 1, 2014 by Sara*

**math**

An airplane travels with a speed of 145 mph in calm air. the wind is blowing with a velocity of 23 mph from N72degreesE. If the plane is headed in a direction N63W, find the magnitude of the speed and the direction of the airplane with reference to the ground. In what ...

*February 24, 2015 by Dan*

**Algebra 3 and trig**

An ocean liner is 177 miles due west of lighthouse A. Lighthouse B is 265 miles due south of lighthouse A. Find the distance from lighthouse B to the liner and the bearing of the ocean liner from lighthouse B.

*June 12, 2013 by Lauren *

**math**

Houses are arranged in a school compound. Thus, Blue house is 4 km due East of Red, Yellow is 3 km due south of Blue and Green is 4 km on a bearing of 230° from the Yellow. Calculate the distance and bearing of the Red house from Green house.

*May 7, 2016 by good*

**phsyics**

A 8.0×10−2-{\rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.30 m/s in a horizontal circle of radius 0.41 m, Find the angle the string makes with the vertical.

*December 16, 2010 by Lisa*

**Physics**

An airplane cruises at 880km/h relative to the air. It is flying from Denver, Colorado due west to Reno, Neveda, a distance of 1200km and will then return. There is a steady 90km/h wind blowing to the east. What is the difference in flight time between the two legs of the trip?

*January 28, 2015 by Skyler*

**Constitution**

Article I, Section 6 of the Constitution is often referred to as: A. the Due Process Clause. B. the Interstate Commerce Clause. C. Due Diligence Clause. D. the Freedom from Arrest Clause. im confused between A and B 2. What case invalidated an earlier effort by Congress to ...

*January 17, 2015 by Amy*

**Math/Trig**

An airplane leaves an airport and flies due west 150 miles and then 170 miles in the direction 210°50'. Assuming the Earth is flat, how far is the plane from the airport at this time (to the nearest mile)

*September 27, 2012 by Jackie*

**physics**

An airplane of mass 1.30 104 kg is moving at 52.0 m/s. The pilot then increases the engine's thrust to 7.00 104 N. The resistive force exerted by air on the airplane has a magnitude of 3.00 104 N.

*November 24, 2014 by kc*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...

*June 8, 2014 by Sam*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...

*June 8, 2014 by Sam*

**Physics**

An airplane is flying in a horizontal circle at a speed of 106 m/s. The 81.0 kg pilot does not want the centripetal acceleration to exceed 6.16 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...

*November 13, 2012 by Kyla*

**Physics**

An airplane is flying in a horizontal circle at a speed of 104 m/s. The 73.0 kg pilot does not want the centripetal acceleration to exceed 6.98 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...

*March 5, 2013 by Anonymous*

**math**

Houses are arranged in a school compound. Thus, Blue house is 4 km due East of Red, Yellow is 3 km due South of Blue and Green is 4 km on a bearing of 230° from the Yellow. What is the distance and bearing of the Red house from Green house?

*May 7, 2016 by Wesley*

**Geometery**

A, B, C and D are on horizontal level ground and CT is vertical pole. B is 35 m due east of C, A is 60 m South of C and D is 60 m West of A. Calculate the angle of elevation of T from N. I m really suck...plz help

*February 22, 2015 by Bob*

**trig**

A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.

*November 16, 2012 by janice*

**Calculus**

The drag on an airplane traveling at velocity v is D=av^2+(b/v^2) where a and b are positive constants. At what speed does the airplane experience the least drag. I have so far that D'=-2b/v^3 do i set this equal to zero then i get 0=-2 dont think that is the right way where ...

*September 26, 2012 by kieran*

**physics**

A man walks 10km due south. The displacement of the man from the initial position is

*January 22, 2014 by etieno*

**Resultant Force?**

a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or even where to start!

*April 23, 2012 by Tabby*

**Math**

A plane leaves an airport X, 20.6degrees east and 36.8 north degrees and flies due south along the same longitude for 8 hours at the rate of 1000km/h to another airport Y, 20.6degrees east and tita degree south. The plane then flies west to another airport Z for 8hours at the ...

*November 1, 2014 by Anonymous*

**Physics**

A car makes a trip due north for three-fourths of the time and due south one-fourth of the time. The average northward velocity has a magnitude of 25 m/s, and the average southward velocity has a magnitude of 32 m/s. Taking northward to be the positive direction, what is the ...

*September 16, 2014 by Dakkota*

**Social studies**

1. what post war industry became more important in south carolina due to new roads? a. tourism* b. agriculture c. manufacturing d. mining

*April 30, 2014 by what*

**Physics**

A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.4 m/s . If the birds can fly at 7.9 m/s relative to the air, what direction should they head?

*April 8, 2016 by Megan*

**Physics**

please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does the total trip last...

*January 30, 2009 by y912f*

**Physics**

A flight controller determines that an airplane is 20.0 south of him. Half an hour later, the same plane is 46.0 northwest of him. If the plane is flying with constant velocity, what is the direction of its velocity during this time? What is the magnitude of its velocity ...

*May 23, 2013 by Anonymous*

**physics**

A river flows due east at 1.65 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.7 m/s due north relative to the water. What is the velocity of the boat relative to shore?

*January 29, 2014 by Tsion*

**Physics**

A river flows due east at 1.54 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.2 m/s due north relative to the water. What is the velocity of the boat relative to shore?

*February 4, 2016 by Carrie*

**English**

1. When is the due date of the report? It is on May 1st. 2. When is the deadline of the book? It is tomorrow. 3. When is the report due? It is due this morning. 4. When is the book due? It is due this Thursday. (Are the questions and answers all correct? Are the questions the ...

*April 16, 2010 by rfvv*

**physics**

a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know

*May 28, 2013 by Anonymous*

**Physics**

An airplane is ﬂying in a horizontal circle at a speed of 104 m/s. The 88.0 kg pilot does not want the centripetal acceleration to exceed 6.15 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81m/s2. Answer ...

*February 8, 2013 by Dave*

**English check**

1.)Supported the ideas of plainness, divine mission, and grace =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 2.Came to America to find freedom to worship and the Promised Land =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 3.Believed ...

*August 24, 2010 by Ariel*

**Pre-Cal**

Two airplanes take off from an airport at the same time. One travels on a heading of 45 at 420 mph and the other on a heading of 150 at 400 mph. After two hours, how far apart are the airplanes? A.650.66 miles B.1,160 miles C.1,301 miles

*March 17, 2012 by Adrianna*

**Physics**

A jet airplane has an intensity of 109.7 W/ m2 when heard at a distance of 26.8 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 8500 m overhead?

*November 22, 2010 by Jill*

**calculus**

An airplane is flying on a bearing of 80 degrees at 540mph. A wind is blowing with a bearing of 100 degrees at 55mph. Find the component form of the velocity of the airplane.

*February 7, 2010 by Kelly*

**Physics**

A truck travels beneath an airplane that is moving 120 km/h at an angle of 24◦ to the ground. How fast must the truck travel to stay beneath the airplane?

*October 9, 2011 by Louis*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.

*November 29, 2013 by princess*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.

*November 29, 2013 by princess*

**physics**

a truck beneath an airplane that is moving 180 km/h at an angle of 47 to the ground. How fast must the truck travelto stay beneath the airplane? Answer in units of km/h.

*October 28, 2015 by chris*

**Physics**

a ship is heading due north at 7.50 m/s relative to the water. The local current is 1.52 m/s in a direction 42 degree west of north. Find its velocity relative to earth( find both direction and magnitude of the velocity)

*December 19, 2012 by Hep*

**maths**

a man goes 5m west and then 12m due south.Find the the distance of the man frm the starting point

*September 30, 2015 by faris*

**Math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)

*April 18, 2011 by Barnie*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)

*April 18, 2011 by ashely*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)

*April 18, 2011 by ashely*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)

*April 18, 2011 by ashely*

**Math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)

*April 18, 2011 by ashely*

**Physics**

a 15000 kg airplane descends a vertical distance of 10.0 km over a horizontal distance of 80.0 km. What is the airplane's loss of potential energy. (I'm confused about the height) Ep=mgh m= 15000 kg g= 9.81 m/s^2 h=??

*December 27, 2014 by Anonymous*

**Physics**

A jet airplane has an intensity of 92.4 W/ m2 when heard at a distance of 21.2 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 10700 m overhead?

*November 22, 2010 by Bella*

**Physics**

A jet airplane has an intensity of 92.4 W/ m2 when heard at a distance of 21.2 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 10700 m overhead?

*November 22, 2010 by Bella*

**physics**

An airplane with a mass of 1.2 x 10^4 kg tows a glider with a mass of .60 x 10^4 kg. If the airplane propellers provide a net forward thrust of 3.6 x10^4 N, what is the acceleration of the glider?

*May 18, 2012 by Anonymous*

**Physics**

An airplane is flying with an air velocity of 850 km/h at 34 degrees n of e. The wind is blowing at 100 km/h at 20 degrees s of e. Find the ground velocity of the airplane.

*September 26, 2012 by Taylor*

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

*March 13, 2016 by Bobby*

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

*March 13, 2016 by Bobby*

**Math**

A model of an airplane is 11 inches in length. The actual length of the airplane is 209 feet. What is the scale used to build the model? Please Help Me!!!

*May 11, 2016 by Saniah *

**Trig**

You and a friend are rowing a boat 8.5 KPH heading north. A cross current is moving 3.2 KPH at an angle of 38 degrees north of the west direction. How fast are you actually moving and what direction are you actually heading?

*May 27, 2014 by Kim*

**phys**

An airplane must reach a speed of 185 mi/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?

*January 30, 2011 by Lisa*

**Physics**

A truck travels beneath an airplane that is moving 140 Km/h at an angle of 15 degree to the ground. How fast must the truck travel to stay beneath the airplane? Answer in units of Km/h.

*October 12, 2015 by Luma*

**Socials - World War I**

Hey, could someone please give me some documentary links telling about the world war I? The teacher also showed us this documentary in class, and I was trying to look for it, but I cant find, I think it was called Canada in World War I. And I had some questions related to it. ...

*October 19, 2011 by Mysterious*

**maths ib**

the angle of elevation of the top of tower from a point A due south of it is 68 degrees .From a point B due east of A the angle of elevation of the top is 54 degrees.If A is 50 m from B find the height of the tower.

*April 11, 2015 by chetna*

**scale factors**

The model of airplane has a wings[an of20 inches. The model scale of 1 inch = 3.5 feet. what is the wingspan of the actual airplane.

*November 19, 2015 by Anonymous*

**MATH**

A model airplane is 11 inches in length. The actual length of the airplane is 209 feet. what is the scale used to build the model?

*May 11, 2016 by Saniah*

**Physics - Momentum of cars at intersection**

Two cars of identical mass are approaching the same intersection, one from the south and the one from the west. They reach the intersection at the same time and collide. The cars lock together and move away at an angle of 22deg counterclockwise from the road; heading east. ...

*September 1, 2010 by Shaila*

**Physics**

The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...

*January 27, 2015 by Chris*

**Geography**

Which continent extends farther south, Australia or South America? South america

*October 4, 2006 by Ian*

**english**

4. Which of the following sentences contains “passive voice?” (Points : 1) The airplane was wrecked by the wind. The wind wrecked the airplane. The cat chased the mouse. The bird flew after the balloon. a, b, c

*October 24, 2010 by cc*

**Physics**

An airplane must reach a speed of 240.5 mi/h in order to take off. If the runway is 571.5 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?

*September 10, 2011 by Anon14*

**Physics**

An airplane flies clockwise around an airport control tower at a speed of 190 m/s. If that control tower is 8 km from the airplane at all times, what is the plane’s angular velocity (magnitude and direction)?

*October 6, 2014 by M*

**Precalculus**

An airplane flies 180 miles from point A in the direction 135° and then travels in the direction 240° for 90 miles. Approximately how far is the airplane from A? (Round your answer to the nearest whole number.)

*October 25, 2014 by Anonymous*

**Science**

An airplane is traveling 725 m/s at 48.8° degrees north of west when a wind starts to blow. The velocity of the wind is 106.7 m/s and it is blowing 21.8° east of north. What is the speed of the airplane relative to the ground?

*December 2, 2015 by Ron*

**Physics**

A boat is headed due east (0) at 20 km/hr. A wind blowing to the south west at 18 km/hr is also acting upon it. What is the boat's velocity?

*September 26, 2011 by Michael*

**Need Help Physics**

The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...

*January 29, 2015 by Anonymous*

**physics**

Betty Bodycheck (mB = 50 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...

*February 10, 2012 by sara*

**physics**

Betty Bodycheck (mB = 60.0 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 46.3 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...

*October 7, 2012 by raven*

**MAth Igcse**

The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.

*January 15, 2015 by Choi*

**MAth Igcse**

The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.

*January 15, 2015 by Choi*

**physics**

an airplane was moving with a velocity equal to 150 mph when the velocity was increased with uniform acceleration to 300 mph in 5 min. Calculate the number of miles the airplane traveled during that interval

*June 21, 2013 by Jen*