Friday

January 30, 2015

January 30, 2015

Number of results: 53,411

**math:quick help**

Let Fn be the nth number in the Fibonacci Sequence. Consider the 3 points (F30,F31),(F32,F33),(F34,F35) in the Cartesian plane. You are allowed to repeatedly apply the following operation: Let P be any one of the three points in the plane and let Q,R be the other points. Draw ...
*May 11, 2013 by Sambaran G.*

**phsyics**

A brick of mass 1.5 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 1.75 m away? Ignore friction. m/s ? (b) Redo part (a) if the coefficient of kinetic ...
*February 27, 2012 by Jacky*

**Physics**

A small airplane has a speech of 200km/h with respect to the air. There is strong wind blowing at 77km/h at 23 north of east with respect to the Earth . A) in which direction should the plane head in order to land at an airport due north of its present location?B) what would ...
*October 1, 2013 by Maria*

**AP Physics**

A 239-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 29.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.900 m/...
*November 13, 2008 by Corey*

**PHYSICS**

A 287-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the log has an acceleration of 0.900 m/...
*September 30, 2010 by STEPHANIE*

**Physics**

A 255 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an acceleration of 0.900 m/...
*November 7, 2011 by Milica Bobic*

**Physics**

A 260-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an acceleration of 0.800 m/...
*February 21, 2012 by Natasha*

**Physics**

A 260-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an acceleration of 0.800 m/...
*February 21, 2012 by Natasha*

**physics**

A 190-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 32.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.876, and the log has an acceleration of 0.671 m...
*March 11, 2012 by Natasha*

**physics**

A 208-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 34.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.830, and the log has an acceleration of 0.800 m/...
*September 27, 2012 by Anonymous*

**Physics**

A 201-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the log has an acceleration of 0.700 m/...
*October 31, 2012 by Anonymous*

**Physics**

A 250 g object attached to a spring oscillates on a frictionless horizontal table with the frequency of 4 Hz and an amplitude of 20 cm. Calculate a) maximum potential energy of the system b) the displacement of the object when the potential energy is one-half of the maximum c...
*January 21, 2013 by Rose*

**maths**

A plane has to crash on the field which is 2km by 1.5km . There is a lake in the corner whose dimensions are 900m by 300 m (i) what is the probability that the plane will crash in the lake (ii) what is the probability that will crash other than lake.
*February 16, 2014 by tuhituhi*

**Physics**

A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v = 2.90 m/s, and 50.0 ...
*March 1, 2012 by Anna*

**Physics**

A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v = 2.90 m/s, and 50.0 ...
*March 1, 2012 by Anna*

**Accounting**

Assume that at the beginning of 2000, Quick Travel, a FedEx competitor purchased a used Boeing 737 aircraft at a cost of 60,000,000. Quick Travel expects the plane to remain useful for 5 years (5 million miles) and to have a residual value of 5,000,000. Quick Travel expects to...
*January 1, 2010 by Ronnie*

**Science**

A metal object with a mass of 19g is heated to 96 degrees celcius, then transfered to a calorimeter containing 75 g of water at 18 degrees celcius. The water and metal object reach a final temperature of 22 degrees celcius. What is the specific heat of this metal object?
*September 24, 2013 by Ashleigh*

**Physics**

An air track glider, 8.0 cm long, blocks light as it goes through a photocell gate. The glider is released from rest on a frictionless inclined track and the gate is positioned so that the glider has travelled 96 cm when it is in the middle of the gate. The timer gives a ...
*September 21, 2011 by John*

**Physics**

An air track glider, 8.0 cm long, blocks light as it goes through a photocell gate. The glider is released from rest on a frictionless inclined track and the gate is positioned so that the glider has traveled 96 cm when it is in the middle of the gate. The timer gives a ...
*September 22, 2011 by John*

**Physics**

An air track glider, 8.0 cm long, blocks light as it goes through a photocell gate. The glider is released from rest on a frictionless inclined track and the gate is positioned so that the glider has travelled 96 cm when it is in the middle of the gate. The timer gives a ...
*September 22, 2011 by John*

**Physics**

An air track glider, 8.0 cm long, blocks light as it goes through a photocell gate. The glider is released from rest on a frictionless inclined track and the gate is positioned so that the glider has travelled 96 cm when it is in the middle of the gate. The timer gives a ...
*September 24, 2011 by John*

**Physics**

Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses are separated by a distance of d=15 cm. ...
*July 16, 2013 by Danny*

**physics**

Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses are separated by a distance of d=15 cm. ...
*July 17, 2013 by andy*

**physics**

Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses are separated by a distance of d=15 cm. ...
*July 17, 2013 by andy*

**physics**

Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses are separated by a distance of d=15 cm. ...
*July 19, 2013 by Anonymous*

**math**

Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction. In an experiment where a ray of light is directed from air into water, if the angle of incidence is 46...
*May 14, 2007 by claudia*

**PHYSÝCS I**

A mass m1 = 18.7 kg on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass m2. The ramp is at an angle of θ = 23.7° above the horizontal. m1 moves up the ramp uniformly (at constant speed). Find...
*March 1, 2012 by ADRÝAANA*

**physics**

A mass m1 = 18.7 kg on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass m2. The ramp is at an angle of θ = 23.7° above the horizontal. m1 moves up the ramp uniformly (at constant speed). Find...
*March 2, 2012 by lissa*

**physics**

Suppose a 28.5 kg object is moving at 38.4 m/s along the x-axis just before it strikes a stationary 13.0 kg object. After the collision, the 28.5 kg object is moving with a velocity of 20.0 m/s at an angle of 5.79 degrees relative to the x-axis. What is the magnitude of the ...
*January 25, 2013 by Michelle*

**Physics**

2. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the force that tyler is ...
*June 21, 2011 by Molly*

**trig**

I am trying to get wxMaxima to give me arcsin(4/5), either in radians or degrees. I am using a: 4/5$ b:asin(a)$ print("the angle is ", b)$ But it returns the angle is asin(4/5) How do I get wxMaxima to give me the angle? I want .927 radians or 53.1 degrees.
*April 8, 2013 by Josh*

**physics**

A 1300-N uniform boom at phi = 64.0° to the horizontal is supported by a cable at an angle θ = 26.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2250 N hangs from its top.
*June 16, 2013 by Anonymous*

**Physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 15.0 m/s. The cliff is h = 66.0 m above a flat horizontal beach. How long after being released does the stone strike the beach below the cliff? I got 3.67 s. With what speed ...
*June 1, 2008 by Elisa*

**Physics ...... Science **

A small airplane has a speech of 200km/h with respect to the air. There is strong wind blowing at 77km/h at 23 north of east with respect to the Earth . A) in which direction should the plane head in order to land at an airport due north of its present location?B) what would ...
*September 30, 2013 by Maria*

**physics**

The system shown below consists of a block of mass M = 4.4 kg resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging block of mass m = 1.9 kg. The pulley is a uniform ...
*March 16, 2012 by Nick*

**physics**

"A 1220-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Find a) the magnitude of the tension in the cable and b) the magnitude of the horizontal and vertical components ...
*April 1, 2011 by Seth *

**Physics**

"A 1220-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Find a) the magnitude of the tension in the cable and b) the magnitude of the horizontal and vertical components of...
*April 3, 2011 by Seth *

**Precal, please help asap!**

The angles of elevation theta and alpha to an airplane from the airport control tower and from an observation post 2 miles away are being continuously monitored. If theta is 42 degrees when alpha is 81 degrees, how far is the plane from the observation post?
*May 26, 2014 by l*

**Physics**

A pilot is performing vertical loop the loop over the ocean at noon . The plane speeds up as it approaches the bottom of the circular loop and slows as it approaches the top of the loop. An observer in helicopter is watching the shadow of the plane on the surface of the water...
*October 24, 2011 by Yashib*

**AQA Mechanics (M1), Statics and forces,please help**

The diagram shows a cylinder of mass 20 kg lying at rest on two smooth planes inclined at angles of 40 degree and 50 degree to the horizontal. Calculate the reaction force exerted by the planes on the cylinder. For digram, please click the following link
*March 19, 2012 by Bob*

**calculus**

Prove (by using a point and a normal vector) that the plane whose intercepts with the coordinate axes are x=1, y=1, and z=1 is given by the equation x+y+z=1
*October 4, 2012 by Alex*

**phsyics **

An airplane with an airspeed of 60 km/hr lands on a runway where the wind speed is 40 km/hr. (a) What is the landing speed of the plane if the wind is head-on? (b) What is the landing speed if the wind is a tailwind, coming from behind the plane?
*March 19, 2014 by price *

**Physics**

for some reason I keep on getting 1.2 seconds for (b) and .86 m for (a) The back of the book has the same answers for (a) but has 1.5 seconds for (b) i do not see what I'm doing wrong. Can someone confirm that I'm wrong or right??? A blcok is given an intial speed of 3.0 m/s ...
*December 20, 2009 by Jake*

**Math**

Which of the following is true if a pentagon tessellates a plane? a. A pentagon never tessellates a plane b. All of its sides must be the same length c. It must be a regular pentagon d. It has one pair of parallel sides I was thinking its (c) but not sure.
*January 19, 2011 by Rena Lambides*

**math**

It took a small plan 1 hour longer to fly 480 miles against the wind than it took the plane to fly the same distance with the wind. If the wind speed was 20 mph, then what is the speed of the plane in calm air?
*February 16, 2011 by Anonymous*

**algebra**

A plane takes 3 hours to travel 1500 miles with the wind. it can travel only 1380 miles against the wind in the same amount of time. Find the speed of the wind and the speed of the plane in still air.
*October 3, 2014 by phil*

**Algebra 2**

Worldwide Airlines flies from Lakeside to Whichitfalls in 4 hours with a tail wind, The return trip against the wind takes 5 hours. Whichitfalls is 5040km from Lakeside. Find the speed of the plane and the velocity of the wind. Would you get on the plane?
*August 31, 2014 by Alex*

**algebra 1**

A plane trip scheduled between Tampa and St. Petersburg was scheduled for 22 minutes. The distance is about 17 miles. How fast would the plane be traveling in miles per hour? 22/60=.367 hrs so 17 miles in .367 hr = x miles in one hr 17/.367=x/1 x=46.32 mph
*February 14, 2007 by H.C.*

**physics**

a ball striking a horizontal plane with a velocity v rebounds with a velocity 256v/625 after 4th collision. the coefficient of restitution is?
*April 11, 2012 by srikala*

**Physics**

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

**English**

I left out a few sentences I urgently need you to check. Thank you. 1) The programme was first broadcast in 2004.(Can you also say: the fist time it was broadcast was...) 2) They lived building homes from the trees and eating the food which was on the plane. 3) The main ...
*December 9, 2011 by Henry2*

**6th grade math**

Which expression could you use to find the measure of an angle that is supplementary to 63 degrees. A) 90 degrees + 63 degrees B) 90 degrees - 63 degrees C) 180 degrees + 63 degrees D) 180 degrees - 63 degrees
*February 1, 2010 by Sue*

**science**

an object 5 millimeters high is loacated 15 millimeters in front of a plane mirror. how far from the mirror is the image located?
*October 15, 2008 by ashley*

**Math**

Why wonâ€™t a regular octagon tessellate the plane by itself? Describe a combination of a regular octagon and another regular polygon that will tessellate the plane.
*February 7, 2010 by Crystal*

**physics**

Five forces act on an object: 1: 60 N at 90 degrees, 2: 40 N at 0 degrees, 3: 80 N at 270 degrees, 4: 40 N at 180 degrees, and 5: 50 N at 60 degrees. What is the magnitude and direction of the 6th froce that would produce equilibrium?
*October 6, 2009 by MAdason*

**Physics**

Five Forces act on an object: 1. 60 N at 90 degrees 2. 40 N at 0 degrees 3. 80 N at 270 degrees 4. 40 N at 180 degrees 5. 50 N at 60 degrees What are the magnitude and direction of a sixth force that would produce equilibrium?
*December 8, 2012 by Michael*

**Trig**

An airplane is flying on a compass heading (bearing) of 340 degrees at 325 mph. A wind is blowing with the bearing 320 degrees at 40 mph. Find the component form of the velocity of the airplane. then find the actual ground speed and direction of the plane
*December 17, 2010 by K*

**physical science**

An object which is 0.52m tall is located 1.13m in front of a plane mirror. How tall is the image as seen in the mirror?
*October 6, 2012 by Anonymous*

**Trigonometry - Cosine of angle**

What is the cosine of the angle between two adjacent faces of a regular tetrahedron? (We define the angle between two intersecting planes as the angle between two intersecting lines, one in each plane, such that each line is perpendicular to the line at which the planes ...
*April 4, 2013 by Knights*

**calculous**

An airplane flies at an altitude of 2 miles toward a point directly over an observer (see figure). The speed of the plane is 600 miles per hour. Find the rates at which the angle of elevation θ is changing when the angle is θ = 30°, θ = 60°, and θ = 70°.
*September 24, 2013 by Anonymous*

**calculous**

An airplane flies at an altitude of 2 miles toward a point directly over an observer (see figure). The speed of the plane is 600 miles per hour. Find the rates at which the angle of elevation θ is changing when the angle is θ = 30°, θ = 60°, and θ = 70°.
*September 24, 2013 by Anonymous*

**Physics**

A 5.0 kg object (m1) is connected to a 10.0 kg object (m2) by a string. If a pulling force F of 20 N is applied to the 5.0 kg object as shown, A) what is the acceleration of the system? B) what is the tension in the string connecting the objects? (Assume a frictionless surface.)
*October 5, 2010 by Anonymous*

**Physics**

I have two I need help with! 1. An airplane is flying in a horizontal flight level at constant velocity, heading due east. If the weight of the plane is 2.6 x 10^4 N, what is the net force on the plane? a)-2.6x10^4 N b)2.6x10^4 N c)0.0 N d) that due to gravity, which is 2.5x10...
*September 5, 2010 by Johnny*

**Geometry**

1. An airplane is flying at 36,000 feet directly above Lincoln, Nebraska. A little later the plane is flying at 28,000 feet directly above Des Moines, Iowa, which is 160 miles from Lincoln. A.assuming a CONSTANT rate of descent, what was the angle of descent? B. What is the ...
*March 26, 2012 by Leah*

**calculus**

A plane flies 810 miles from A to B with a bearing of 75 degrees. Then it flies 648 miles from B to C with a bearing of 32 degrees. Find the straightline distance from and bearing from C to A.
*May 15, 2012 by ASH*

**engineering**

A slotted bar is attached to the origin and rotates in the horizontal plane with a constant angular velocity of 0.665 radians/s . The bar moves a roller weighing 33.6 lb along the cam's perimeter. A spring holds the roller in place; the spring's spring constant is 1.34 . The ...
*October 11, 2011 by HELP PLEASE! DOn't know How to do it!!! :(*

**College Math**

Im having a hard time trying to figure out how to do this problem: A plane can fly 150 mph in calm air. Flying with the wind, the plane can fly 350 mi in the same amount of time it takes to fly 250 mi against the wind. Find the rate of the wind.
*November 23, 2009 by Leah*

**Physics**

1. A ball is projected horizontally from the edge of a table that is 4.0 meters high, and strikes the floor at a point 3.0 meters from a point on the floor directly below the edge of the table. The initial velocity of the ball as it is projected from the table is, in m/s ( g=9...
*March 30, 2008 by Sandhya*

**Physics**

A uniform metal rod, with a mass of 3.7 kg and a length of 1.2 m, is attached to a wall by a hinge at its base? A horizontal wire bolted to the wall 0.51 m above the base of the rod holds the rod at an angle of 25 degrees above the horizontal. The wire is attached to the top ...
*July 28, 2011 by Lonely*

**Maths - Vectors**

The position vectors a,b,c of the points A,B,C relative to the origin O are ai, bj and ck respectively.Find: 1) a vector equation for the line l throught O which is normal to the plane ABC. 2) a vector equation of the plane ABC The answers should be: 1) r=t(bc i +ac j +ab k) ...
*February 2, 2009 by Claire*

**geometry**

find the measure of the smallest angle , angle hfg , if angle ghf=92 degrees and angle hgf = 72 degrees
*April 17, 2013 by lamar*

**Math Analysis**

What is the apparent size of an object 1 cm long held 80 cm from your eyes? ==> When they say "apparent size", they mean the angle from which one object is viewed by, say, a person (or in this case a pair of eyes). I thought I'd be able to find the angle by using the ...
*January 6, 2010 by Emily*

**Geometry **

An aircraft takes off and climbs at a constant 29 degree angle until it reaches and altitude of 6 miles. At that point, how far away is the plane from the airport?
*January 13, 2013 by Imani *

**physics**

A chair of weight 115 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 44.0 directed at an angle of 34.0 below the horizontal and the chair slides along the floor.
*February 5, 2010 by Anonymous*

**Computer Vision**

Show that the image of an ellipse in a plane, not necessarily one parallel to the image plane, is also an ellipse. Show the the line in space is a line in the image. Assume perspective projection.
*February 17, 2008 by Mike*

**Science**

The sun, moon and planets all follow approximately the same path from east to west across the sky; none of them is ever seen in the far northern or far southern sky. What does this suggest about the arrangements of these members of the solar system in space? Think of terms of ...
*December 31, 2006 by Lacy*

**physics**

a 50-N force is directed at an angle of 50 degrees above the horizontal. resolve this force into vertical and horizontal components.
*February 3, 2014 by lee*

**physics**

A 2.80 kg steel ball strikes a massive wall at 12.8 m/s at an angle of alpha = 50.9° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.156 s, what is the magnitude of the average force exerted on the ball by...
*February 24, 2012 by Tom*

**physics**

A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700 {\rm kg}, and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 2100N . The tension in ...
*March 13, 2013 by Gareth*

**Physic please check**

A person stands 4.2 m in front of a wall that is covered floor-to-ceiling with a plane mirror. His eyes are 1.9 m above the floor. He holds a flashlight between his feet and manages to point it at the mirror. At what angle of incidence must the light strike the mirror so the ...
*October 20, 2007 by Mary*

**Physics**

Write down the electric field and associated magnetic field in vacuum for a traveling plane wave with the following properties. The amplitude of the electric vector is E0 and the frequency is ω. The radiation is linearly polarized in the y-z plane at an angle α of &#...
*May 8, 2013 by amit sharma*

**Geometry HELP!!**

I need help with my geometry hw, i need to now wat the properties are for the following statements. 1. If 2x=6, then x=3 2. If 42 degrees + measure of angle 2 = 90 degrees, then measure of angle 2 = 48 degrees 3. If measure of angle D = 40 degrees and measure of E = 90 degrees...
*November 11, 2009 by Anonymous*

**Physics**

A 2.00 kg block is pushed against a 400N/m spring, compressing it 22.0 cm. When the block is released, it moves along a frictionless horizontal surface and then up an incline. The angle of the incline is 37.0 degrees and the coefficient of kinetic friction with the incline is ...
*June 29, 2011 by Timo*

**physics**

A 35.2 kg wagon is towed up a hill inclined at 18.3◦ with respect to the horizontal. The tow rope is parallel to the incline and exerts a force of 125 N on the wagon. Assume that the wagon starts from rest at the bottom of the hill, and disregard friction. The ...
*October 27, 2014 by Anonymous*

**Physics**

A car sits in the parking lot. Above is a cargo plane, flying horizontally at 61 m/s. At the exact moment the plane is 182 m directly above the car, a crate accidentally falls from its cargo doors. Relative to the car, where will the crate land? Enter m as unit and use g = 10...
*January 22, 2013 by Jessica-- Please help!*

**Physics**

A car sits in the parking lot. Above is a cargo plane, flying horizontally at 61 m/s. At the exact moment the plane is 182 m directly above the car, a crate accidentally falls from its cargo doors. Relative to the car, where will the crate land? Enter m as unit and use g = 10...
*January 22, 2013 by Robert*

**physics**

A circular disc of radius 'r' carries uniform charge distribution of surface charge density 'A'. If the disc lies on the z = 0 plane, with its axis along the z axis, find the electric field at a point P, along the z axis that passes through the center of the disk perpendicular...
*September 18, 2014 by Anupam*

**Physcis**

An airplane flying at 120km/h due west moves into a region where the wind is blowing at 40km/h due east. If the plane's original vecotr velocity is Vplane, what is the expression for the plane's resulting velocity in terms of Vplane. a. 1/3 >Vplane b. 2/3>Vplane c.1 ...
*September 18, 2010 by Josh*

**Physics**

A baseball is thrown from the rood of a 27.5m tall building with an initial velocity of magnitude 16.0m/s and directed at an angle of 37 degrees above the horizontal. A) Using energy methods and ignoring air resistance, calculate the speed of the ball just before it strikes ...
*April 9, 2013 by Anonymous*

**PHYSICS**

PLAN A 4 HR FLIGHT (TELL ME SPEED AND DIRECTION SETTINGS FOR THE PLANE) TO FLY FROM CHICOGO TO ATLANTA(1500 KM @ 30 DEGREES E OF S) ON A DAY WHEN THE WIND IS BLOWING 100 KM/HR DUE EAST
*February 7, 2011 by HELLO*

**Physics**

A small plane moving at 207km/hr flying 50.0m above the ground chases a convertible moving at 105km/hr down a straight highway. The plane has a package to drop in the car’s back seat. Assuming the vehicles maintain their speed and altitude and there is no air resistance, how ...
*September 18, 2014 by Mercedes *

**physics...**

Tarzan swings on a 26.2 m long vine initially inclined at an angle of 39° from the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? (b) What is his speed at the bottom of the swing if he starts with an initial speed of 3.26 m/s?
*April 15, 2010 by brittany*

**physics**

Tarzan swings on a 28.0 m long vine initially inclined at an angle of 22° from the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? (b) What is his speed at the bottom of the swing if he starts with an initial speed of 3.06 m/s?
*January 26, 2013 by Rachel Laurson*

**physics**

Tarzan swings on a 23.2 m long vine initially inclined at an angle of 22° from the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? m/s (b) What is his speed at the bottom of the swing if he starts with an initial speed of 2.58 m/s? m/s
*November 20, 2014 by Anonymous*

**Math**

One angle of an isosceles triangle is 28°. What are the other 2 angles? (Choose all that apply.) 76 degrees and 76 degrees 116 degrees and 116 degrees 28 degrees and 152 degrees 28 degrees and 124 degrees
*January 18, 2012 by Ryan*

**Engineering **

A 10.0 Kg block is released from point A in the figure below. The block travels along a smooth frictionless track. It makes a collision with stationary 10 kg ball. The ball moves forward with speed of 2 m/s. a) What is the speed of the block at point C? b) What is the velocity...
*June 7, 2013 by Ahmed *

**Math**

1. A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0, 2, 0). Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3? 2. What point represents a reflection of B over the xy-plane? B'(?) 3...
*February 20, 2013 by Becca*

**Calculus**

1. A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0, 2, 0). Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3? 2. What point represents a reflection of B over the xy-plane? B'(?) 3...
*February 20, 2013 by Becca*

**Math**

1. A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0, 2, 0). Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3? 2. What point represents a reflection of B over the xy-plane? B'(?) 3...
*February 20, 2013 by Becca*

**PHYYYYYSICS 10**

A baseball is thrown horizontally off a 41-m high cliff with a speed of 18 m/s. What will be the angle in degrees between the horizontal direction and the velocity vector of the baseball just before it hits the ground? Assume that the answer will be positive and also will be ...
*September 18, 2014 by Carissa*

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