Friday

February 27, 2015

February 27, 2015

Number of results: 36,299

**physics**

A steam catapult launches a jet aircraft (from rest) from the aircraft carrier John C. Stennis, giving it a speed of 160 mi/h in 2.40 s. Find the average acceleration of the plane. Assuming that the acceleration is constant, find the distance the plane moves.
*September 16, 2010 by J*

**Physics**

A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 205 mi/h in 3.00 s. (a) Find the average acceleration of the plane. (b) Assuming the acceleration is constant, find the distance the plane moves.
*September 21, 2012 by Kelly*

**Physics**

A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 190 mi/h in 2.70 s. a.) Find the average acceleration of the plane. b.) Assuming the acceleration is constant, find the distance the plane moves.
*September 5, 2013 by Ashley*

**physics**

a atapult launcher on an aircraft carrier accelerates a jet from rest to 72m/s. The work done catapult during the launch is 7.6 x 10 to the 7th J. a)What is the mass of the jet? b) If the jet is in contact with the catapult for 2s, what is the power output of the catapult?
*March 15, 2010 by Clayton*

**physics**

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.4 x 10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.0 x 10^7 J at lift-off. ...
*October 15, 2008 by nj*

**Physics **

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.1 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 3.8 107 J at lift-off. What is ...
*November 13, 2010 by Patty*

**Physics**

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.10 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.30 107 J at lift-off. What is...
*November 11, 2012 by Donald*

**Physics**

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.82 x 105 N. In being launched from rest it moves through a distance of 57.2 m and has a kinetic energy of 5.71 x 107 J at lift-off. ...
*December 14, 2012 by Ricardo*

**physics**

a jet fighter plane is launched from a catapult on an aircraft carrier. it reaches a speed of 42 m/s at the end of the catapult in 2 sec. if the acceleration is constant, what is the length of the catapult?
*October 15, 2009 by Anonymous*

**Physics **

all HELP appreciated! Thank You! A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.1 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of...
*October 19, 2009 by Pablo*

**Physics**

A jet catapult on an aircraft carrier accelerates a 200kg plane uniformly from rest to a launch speed of 320km/h in 2.0s. What is the magnitude of the net force on the plane?
*October 27, 2009 by Glenn*

**physics**

When a jet lands on an aircraft carrier, a hook on the tail of the plane grabs a wire that quickly brings the plane to a halt before it overshoots the deck. In a typical landing, a jet touching down at 240 km/h is stopped in a distance of 95 m. What is the magnitude of the jet...
*October 16, 2014 by Anonymous*

**Physics**

On an aircraft carrier, a jet can be catapulted from 0 to 155 mi/h in 2.00 s. If the average force exerted by the catapult is 5.53×106 N what is the mass of the jet?__________ kg
*October 12, 2012 by Emma*

**physics**

An aircraft carrier operating in the Persian Gulf is about to receive aircraft. There is a wind from the north at 10kts. In preparation to receive aircraft. the Captain orders the carrier to alter its heading to bring the ship directly into the wind and orders the ship to ...
*October 19, 2011 by Anonymous*

**physics**

A Navy jet (see the figure) with a weight of 219 kN requires an airspeed of 87 m/s for liftoff. The engine develops a maximum force of 100 kN, but that is insufficient for reaching takeoff speed in the 85 m runway available on an aircraft carrier. What minimum force (assumed ...
*February 25, 2015 by John*

**Physics 1**

A catapult 100 m long launches a 3.0 x 10^4 kg jet from the deck of a carrier. Starting at rest, the plane takes off with a speed of 80 m/s. Find: a)The acceleration, b) the average force, c) the work done, d) time to accelerate , e) the power developed.
*November 28, 2012 by John*

**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 jet aircraft is traveling at 180 m/s in horizontal flight. The engine takes in air at a rate of 77.0 kg/s and burns fuel at a rate of 3.15 kg/s. The exhaust gases are ejected at 595 m/s relative to the speed of the aircraft. Find the thrust of the jet engine. (Take the ...
*October 11, 2011 by mymi*

**Physics **

A 16,000 kg F-18 (jet fighter) lands at 52 m/s on an aircraft carrier, its tail hook snags the cable to slow it down. The cable is attached to a spring with a spring constant of 60,000 N/m. How far does the spring stretch to stop the jet?
*November 16, 2011 by ....*

**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*

**Physics**

A Jet has a liftoff speed of 160 km/hr. What minimum uniform acceleration does this require if the aircraft is to be airborne after a takeoff run of 300m?
*February 5, 2011 by Apryl*

**physics**

A catapult with a spring constant of 1.0 104 newtons per meter is required to launch an airplane from the deck of an aircraft carrier. The plane is released when it has been displaced 0.50 meter from its equilibrium position by the catapult. What is the energy acquired by the ...
*November 21, 2010 by ...*

**physics**

you are a pilot on an aircraft carrier. you must fly to another aircraft carrier, now 1,450km at 45 degres of your position, moving at 56 km/h due east. the wind is blowing from the south at 72 km/h. calculate the heading and air speed needed to reach the carrier 2.5 hours ...
*October 17, 2010 by john*

**Science**

A jet aircraft is traveling at Mach 2.5 through air at 1 °C. What is the jet's speed in m/sec? I can do the equation myself, I just need to know what equation I need to do in order to find the answer.
*April 3, 2013 by Elisabeth*

**physics**

A particular jet aircraft must reach a speed of 43 m/s in order to take-off. If the acceleration of the plane is 1329 m/s2, the minimum length of the runway is Answermeters
*January 29, 2015 by diana*

**physics **

hi every one i appreciate help as ineed answer as soon a jetplane discharges a jet at rate of 28kg/s with a velocity of 950 m/s relative to the plane if the forward speed of the plane is 875km/h what is the thrust developped on the plane and the power developed at the jet the ...
*December 15, 2012 by georgie*

**physics**

You are a pilot on an aircraft carrier. You must fly to another aircraft carrier, now 1450 km at 45 degree of your position, moving at 56 km/hr due east. The wind is blowing from the south at 72 km/hr. Calculate the heading and airspeed needed to reach the carrier 2.5 hour ...
*February 24, 2008 by priya*

**trig**

An aircraft maintains a speed of 500 miles per hour in a southwestern direction. The velocity of the jet stream is constant 50 miles per hour from the west. Find the resultant vector, the speed, and actual direction of the aircraft.
*January 15, 2013 by Deb*

**pre calc**

A navy destroyer is exactly 62 miles south of an aircraft carrier, which is travelling W18°S at 24 mph. What speed and bearing must the destroyer maintain if it is to reach the aircraft carrier in exactly 2 hours ?
*December 8, 2011 by jim*

**physics**

A jet pilot takes his aircraft in a vertical loop.f the jet is moving at a speed of 1500 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.
*October 18, 2010 by Anonymous*

**algebra 1**

A passenger plane and a jet leave att the same time from the same airport,traveling in opposite directions. The jet travels at twice the speed of the passenger plane. they are 2400 mi apart in 4 hours. Find the speed of the passenger plane and jet.
*October 15, 2012 by Victoria*

**PHYSICS!!!HELP！！**

An aircraft carrier has a speed of 13.0m/s relative to the water. A jet is catapulted from the deck and has a speed of 67.0m/s relative to the water. The engines produce a 1550-Hz whine, and the speed of sound is 343m/s. What is the frequency of the sound heard by the crew on ...
*March 22, 2008 by Stephy*

**help!!!!**

A navy destroyer is exactly 68 miles North of an aircraft carrier, which is travelling West 21 degrees North at 18 mph. what speed and bearing must the destroyer maintain if it is to reach the aircraft carrier in exactly 3 hrs? is it 226mph?
*December 8, 2011 by bob*

**pre calc**

A navy destroyer is exactly 68 miles North of an aircraft carrier, which is travelling West 21 degrees North at 18 mph. what speed and bearing must the destroyer maintain if it is to reach the aircraft carrier in exactly 3 hrs?
*December 8, 2011 by colonel smith*

**math(rational functions application)**

The average speed of a jet is 100km/h faster than a cargo plane. To travel 1400km, the cargo plane requires 25% more time than the jet. Find the average speed of the jet. This is the formula I figured out so far. V(average)=V(jet)-V(cargo 100km/h= d/t - d/t 100= [1400km/x] - [...
*October 22, 2009 by jane*

**pre calc**

A navy destroyer is exactly 68 miles North of an aircraft carrier, which is travelling West 21 degrees North at 18 mph. what speed and bearing must the destroyer maintain if it is to reach the aircraft carrier in exactly 3 hrs? is it 226mph?
*December 8, 2011 by jim*

**pre calc**

A navy destroyer is exactly 68 miles North of an aircraft carrier, which is travelling West 21 degrees North at 18 mph. what speed and bearing must the destroyer maintain if it is to reach the aircraft carrier in exactly 3 hrs? is it 226mph?
*December 8, 2011 by xiolin*

**Trig**

a boeing 747 jet maintains an airspeed of 650 miles per hours in a southwesterly direction. the velocity of the jet stream is a constant 80 miles per hour from the west. find the actual speed and direction of the aircraft. how do i set this up? can anyone walk me through the ...
*April 25, 2010 by Karley*

**physics**

A jet plane lands in an airport with a speed of 125 m/s and can accelerate uniformly at a maximum rate of -9.8 m/s2 as it comes to rest. What should be the minimum length of the runway so that the jet plane can land in the airport safely?
*January 30, 2015 by james*

**trig**

A plane climbs into the jet stream which is flowing at a rate of 80 miles per hour. It travels with the jet stream for 5 hours and then reduces its altitude, flying out of the jet stream for 4 more hours. The plane, while out of the jet stream, covered 550 miles less than it ...
*November 4, 2010 by Anonymous*

**physics**

A jet fighter lands on an aircraft carrier. m = 35,000 kg, the force of deceleration is 43,000 N, and the initial velocity is 27 m/s. What distance does it travel during the first 7.5 seconds of deceleration?
*April 5, 2012 by jh bjh*

**physics**

A 747 jet, travelling at a speed of 70 m/s, touches down on a runway. The jet slows to rest at the rate of 2.0 m/s^2. Calculate the total distance the jet travels on the runway as it is brought to rest.
*October 7, 2010 by elana*

**Math**

1) Matt traveled the first leg of his trip for 1350 miles on a large jet. He then traveled an additional 600 miles on a private plane to reach his destination. If the speed of the jet was three times the speed of the plane and the total time in the air was 6 hours determine ...
*May 17, 2012 by Sara*

**physics**

A jumbo jet taxiing down the runway receives word that it must return to the gate to pick up an important passenger who was late to his connecting flight. The jet is traveling at 45.0 m/s when the pilot resieves the messae. What is the acceleration of the plane if it takes the...
*September 10, 2007 by confusedd!*

**Physics**

A jet plane is cruising at 225.0m/s when suddenly the pilot turns the engines up to full throttle. After travelling 2.26km, the jet is moving with a speed of 392.0m/s. What is the jet's acceleration, assuming it to be a constant acceleration?
*September 29, 2012 by Sarah*

**trig**

jet stream which is flowing at a rate of 80 miles per hour. It travels with the jet stream for 5 hours and then reduces its altitude, flying out of the jet stream for 4 more hours. The plane, while out of the jet stream, covered 550 miles less than it did during the 5 hours ...
*July 9, 2010 by Anonymous*

**physics**

A 12 000-kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration of gravity is the airplane’s acceleration? (b) What is the average force that the catapult exerts on the airplane?
*November 18, 2013 by josna *

**Physics**

A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration? (b) What is the average force the catapult exerts on the airplane?
*January 16, 2013 by Jan*

**Physics**

a particular jet aircraft must reach a speed of 80 m/s in order to take off. If the runway is 1500 m long, determine the acceleration
*January 29, 2013 by Anonymous*

**physics**

A space aircraft is launched straight up. The aircraft motor provides a constant acceleration for 10seconds, then the motor stops. The aircraft's altitude 15seconds after launch is 2km. Ignore air friction. Determine (i) the acceleration, (ii)the maximum speed reached in km/h...
*April 2, 2013 by Kemmone*

**machanics**

A space aircraft is launched straight up.The aircraft motor provides a constant acceleration for 10 seconds,then the motor stops.The aircraft's altitude 15 seconds after launch is 2 km.ignore air friction .what is the acceleration,maximum speed reached in km/h and the speed(in...
*April 2, 2013 by shone*

**Physics**

The 17500 Hz whine of the turbines in the jet engines of an aircraft moving with speed 280 m/s is heard at what frequency by the pilot of a second craft trying to overtake the first at a speed of 380 m/s?
*December 15, 2011 by Kyle*

**Physics**

The 17500 Hz whine of the turbines in the jet engines of an aircraft moving with speed 280 m/s is heard at what frequency by the pilot of a second craft trying to overtake the first at a speed of 380 m/s?
*December 15, 2011 by Kyle*

**algebra**

Jet #1 leaves an airport at 600 km/h. Jet #2 leaves 3/4 hour after jet #1 in same direction. How long until jet #2 overtakes jet #1
*January 28, 2013 by Hannah*

**physics**

1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the parcel to hit the ground.. Assume no air resistance. a. How high is the jet? b. How far forward horizontally from the spot where it leaves the jet, ...
*October 18, 2011 by mimi*

**physics**

1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the parcel to hit the ground.. Assume no air resistance. a. How high is the jet? b. How far forward horizontally from the spot where it leaves the jet, ...
*October 18, 2011 by mimi*

**Math**

An airplane flies 500 mi/h in still air. Flying with the jet stream, the plane travels 1200 mi from City A to City B. The plane then returns to City A, flying against the jet stream. The round-trip flight time is 5 h. What is the speed of the jet stream in miles per hour? A: ...
*May 24, 2011 by Rebecca*

**maths**

A passenger plane and a jest leave at the same time from the same airport, traveling in opposite directions. The jet travels at twice the speed of the passenger plane. They are 2400 miles apart in 4 hours. Find the speed of the passenger plane and jet.
*November 6, 2007 by gf*

**Physics**

The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 228 km/h. a) How many degrees from west should the aircraft head? Let clockwise be positive. Answer in units of degrees. b) What ...
*October 15, 2014 by Steven*

**Advanced Maths (Vectors) AQA Level, please help?**

An aircraft have a speed in still air of 400 km/h. A wind is blowing from the south at 80 km/h. The pilot wishes the aircraft to travel due east. Find the direction in which aircraft should be steered and the speed at which it will travel.
*February 12, 2012 by jat*

**physics**

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed of 38.3 m/s. How ...
*February 7, 2011 by shaknocka*

**physics**

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed of 38.3 m/s. How ...
*February 7, 2011 by shaknocka*

**physics**

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed of 38.3 m/s. How much...
*February 23, 2011 by tish*

**Physics**

The pilot of an aircraft wishes to ﬂy due west in a 52.6 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 154 km/h. A.) How many degrees from west should the aircraft head? Let clockwise be positive. Answer in units of ◦ (...
*November 8, 2012 by Sam *

**physics**

a jet pilot takes his aircraft in a vertical loop. a) if the jet is moving at a speed of 2000 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's b) calculate also the ...
*October 4, 2009 by jeffery*

**Physics**

A Boeing 747 "Jumbo Jet" has a length of 59.7m. The runway on which the plane lands intersects another runway. The width of the intersection is 25.0m. The plane decelerates through the intersection at a rate of 5.7 m/s(squared) and clears it with a final speed of 45.0 m/s. How...
*February 20, 2011 by CR*

**physics**

a jet airliner moving initially at 3..00X10^2 mi/h due east enters a region where the wind is blowing 1.0 x 10^2 mi/h in a direction 30 degrees north of east. A) find the components of the velocity of the jet airliner relative to the air. b) find the components of the velocity...
*October 2, 2011 by joshua*

**physics**

A jet starting from rest reaches a speed of 241km/h on 96.0m of runway. Determine the magnitude of the Jet's acceleration? Answer is 23.3m/s^2
*July 3, 2013 by jacob*

**math**

A jet is flying through a wind that is blowing with a speed of 45 mi/h in the direction N 30° E (see the figure). The jet has a speed of 775 mi/h relative to the air, and the pilot heads the jet in the direction N 45° E.
*December 2, 2012 by kimberly*

**physics **

The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 228 km/h. a) How many degrees from west should the aircraft head? Let clockwise be positive. Answer in units of degrees. b) What ...
*October 15, 2014 by Danny*

**Last physics question for the night **

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. How do i do this?
*October 12, 2009 by Jessica*

**Math**

the first aircraft has 47 more seats than the second aircraft. the third aircraft has 54 fewer seats than the second aircraft. if their total number of seats is 401, find the number of seats for each aircraft.
*January 27, 2014 by Anonymous*

**physics**

The pilot of an aircraft wishes to fly due west in a 46.8 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h. (a) In what direction should the aircraft head? ° north of west (b) What should its speed relative to the ground be? km/h
*December 13, 2012 by Anonymous*

**MATH**

Aircraft are landing and taking off on parallel runways at a busy airport. On its approach, one aircraft descends from an altitude of 1200m to an altitude of 500m in 35s. During the same time, a departing aircraft climbs from an altitude of 200 m to an altitudes of 1250m. A) ...
*January 5, 2011 by Anonymous*

**mechanics**

A space aircraft is launched staight up.The aircraft motor provide aconstant acceleration for 10 second ,then it stops.the aircraft's altitude 15 second after launch is 2 km.ignore air friction.what is the acceleration and the maximum speed reached in km/h?
*April 4, 2013 by shone*

**Science**

A 7500 kg plane is launched from an aircraft carrier in 2.2 seconds, what is the planes acceleration? what is its velocity?
*March 20, 2008 by Mike*

**Maths**

please help me answer this question: A pilot sets to fly from B to A and wishes to set a course to offset a 32 km/h easterly wind.The aircraft can fly at the speed of 800km/h in still air. A is 256 from B in a bearing of 330 degrees. a)on what course must the aircraft be set? ...
*August 11, 2011 by Ruby*

**Physics 6A**

A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100 at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5 's B)Calculate the 68 pilot's ...
*May 9, 2012 by Daisy*

**Physics**

A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance the band is stretched?
*November 28, 2010 by sandhu*

**Physics**

A jet aircraft is accelerating at 4.3 m/s2 as it climbs at an angle of è = 44° above the horizontal (see figure). What is the total force that the cockpit seat exerts on the 77 kg pilot?
*February 10, 2013 by Anonymous*

**science physics**

a small aircraft experiences s lift force equal to 3.8 times of its weight. a)draw a diagram to show the forces acting on the aircraft when it is flying in a horizontal circle with its wing banked at an angle to the horizontal b)determine the maximum bank angle that the ...
*August 16, 2011 by mira*

**trigonometry**

An airbus A320 aircraft is cruising at an altitude of 10000 m. The aircraft is flying in a straight line away from Rachel, who is standing on the ground. If she sees the angle of elevation of the aircraft change from 70 degrees to 33 degrees in one minute, what is its cruising...
*January 20, 2010 by ann*

**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*

**Physics**

A Boeing 747 "Jumbo Jet" has a length of 55.9 m. The runway on which the plane lands intersects another runway. The width of the intersection is 24.0 m. The plane decelerates through the intersection at a rate of 5.61 m/s2 and clears it with a final speed of 43.3 m/s. How much...
*January 30, 2015 by Grayson*

**physics**

A jumbo jet needs to reach a speed of 369 km/hr on the runway for takeoff. Assuming a constant acceleration and a runway 1.6 km long, what minimum acceleration from rest is required?
*November 11, 2013 by Dhruv*

**physics **

Landing with a speed of 78.3 m/s, and traveling due south, a jet comes to rest in 959 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.
*August 29, 2012 by stoic-rider77*

**physics **

Landing with a speed of 78.3 m/s, and traveling due south, a jet comes to rest in 959 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.
*August 30, 2012 by stoic-rider77*

**physics**

An aircraft in a straight line with a constant speed of 450km.h ,What is the magnitude of the resultant force acting on the aircraft?
*February 22, 2013 by rose*

**physics**

A jet plane lands with a speed of 87 m/s and can accelerate at a maximum rate of -5.30 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? What is the actual minimum distance needed to stop ...
*September 15, 2011 by ashley*

**physics**

A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 355. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 72 dB. What sound intensity level would the crew member ...
*December 3, 2011 by Marco*

**Physics**

A jet has 4 engines, each capable of providing 415N of thrust. The mass of the jet is 140,000 kg. What is the greatest acceleration that the jet can achieve?
*October 4, 2013 by Lim*

**trig problem**

Hi, A fountain in a shopping centre has a single jet of water. The height of the jet of water varies according to a sinusoidal function. A student notes that, in exactly one minute, the jet goes from a minimum height of 2m to a maximum height of 6m and back to 2m. At 13:00, ...
*April 28, 2012 by Anonymous*

**physics**

A jet plane lands with a speed of 101 m/s and can accelerate at a maximum rate of -4.60 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? ___s b)What is the actual minimum distance needed to...
*September 14, 2010 by jc*

**physics**

a jet plane lands with a speed of 101 m/s and can accelerate at a maximum rate of -4.60 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? ___s b)What is the actual minimum distance needed to...
*September 15, 2010 by jer*

**Algebra**

A turbo-jet flies 50 mph faster than a super-prop plane. If a turbo-jet goes 2000 miles in 3 hours less time than it takes the super-prop to go 2800 miles, find the speed of each plane. I do not understand how to do this at all. Please explain as well as you can! Thanks.
*May 24, 2009 by Gemma*

**physics**

A Cessna aircraft has a lift-off speed of 120 km/h. (a)What minimum constant acceleration does this require if the aircraft is to be airborne after a take=off of 240m? Work: 120 km/h-->33.3 m/s (33.3 m/s)^2= (16.7 m/s)^2 + 2a(240 m) a= 1.73 m/s^2 [What did I do wrong?] (b)...
*September 7, 2007 by Anonymous*

**PHYSICS 6A centripetal acceleration **

A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100km/h at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5g's B)Calculate the 68kg ...
*May 9, 2012 by Daisy*

**Application prob. for Trig.**

Hi, A fountain in a shopping centre has a single jet of water. The height of the jet of water varies according to a sinusoidal function. A student notes that, in exactly one minute, the jet goes from a minimum height of 2m to a maximum height of 6m and back to 2m. At 13:00, ...
*April 30, 2012 by Anonymous*

**Math (URGENT)**

A word problem. David flew 300km on a commuter plane, then 2000km on a passenger jet. The passenger jet flew twice as fast as the commuter plane. The total flying time for the journey was 3.25 hours. What was the speed of each plane, in kilometers per hour? Please help. I've ...
*May 24, 2010 by John*

**physics**

In zero-gravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in the figure, the aircraft climbs from 24,000 ft to 32000 ft, where it enters the zero-g parabola with a velocity of 158 m/s at 45.0° nose high and ...
*February 17, 2011 by kia*

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