Sunday

March 29, 2015

March 29, 2015

Number of results: 67,168

**Physics**

Two points in the xy plane have cartesian coordinates (4.6,-10) and (-10,3.2) I found the distance to be 19.68 but i need to find the angle between the line connecting the two points and the x-axis (measured counterclockwise from the x-axis) within the limits of -180 and +180 ...
*August 30, 2009 by bubba*

**graph on a plane**

graph the inequality on a plane 3x+4y is less then or equal to 12
*October 12, 2010 by Erica*

**graph on a plane**

graph the inequality on a plane 3x+4y is less then or equal to 12
*October 12, 2010 by Erica*

**science**

For each of the activities listed below: 1. Describe one way in which work is done (Reminder: For work to be done, the force and the distance must be in the same direction.). 2. List two simple machines used in each task. 1. making a meal oven, microwave 2. traveling to school...
*November 4, 2009 by anonymous*

**physics**

A T-bar tow is planned in a new ski area. At any one time, it will be required, to pull a maximum of 80 skiers up a 600-m slope inclined at 15 degrees above the horizontal at a speed of 2.5 m/s. The coefficient of kinetic friction between teh skiers skis and the snow is ...
*March 4, 2010 by bill*

**physics**

A box has a mass of 0.215 kg. It is on a very smooth (frictionless) horizontal surface and is acted upon by a force of 2.27 N at an angle of θ = 37.6° with the horizontal. What is the acceleration of the box?
*September 22, 2012 by Amy*

**physics**

A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled with a force of 60.0 N at an angle θ above the horizontal. After the block is pulled through a distance of 2.00 m, its speed is 2.70 m/s, and 43.0 J of work has been done ...
*February 25, 2014 by Jake*

**Physics**

A)A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled with a force of 60.0 N at an angle θ above the horizontal. After the block is pulled through a distance of 2.00 m, its speed is 2.70 m/s, and 43.0 J of work has been ...
*February 26, 2014 by Tsion*

**Pressure and Force**

Hello, I am looking for the equation to solve this problem: 1. A .75 kg object with dimensions 24 and 20 are on a table. What force does the object apply to the table? What pressure does the book apply? Thanks! Force = Mass * Acceleration (or in this case, gravity) F = (.75kg...
*October 7, 2006 by Lisa*

**physicis**

A 8.30 kg object with a speed of 34.0 m/s strikes a steel plate at an angle of 45.0 degrees with the normal to the plate, and rebounds at the same speed and angle on the other side of the normal. What is the change (in magnitude only) of the linear momentum of the object (in ...
*April 23, 2013 by PCm*

**physics**

A 8.30 kg object with a speed of 34.0 m/s strikes a steel plate at an angle of 45.0 degrees with the normal to the plate, and rebounds at the same speed and angle on the other side of the normal. What is the change (in magnitude only) of the linear momentum of the object (in ...
*April 24, 2013 by Help!!!*

**Physics 203**

A supersonic plane flies directly over you at 1.8 times the sound speed. You hear its sonic boom 20s later. What is the plane's altitude, assuming a constant 340 sound speed?
*May 11, 2010 by Mike*

**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 180 m/s, what is the radius of the circle? 1 m What is the centripetal acceleration of the plane? 2 m/s2
*December 8, 2010 by beth*

**Math **

Find all values of p such that 2(x+4)(x-2p) has a minimum value of -18? I know x=-4 but I do not know that helps us. Please explain in steps! The temperature of a point (x,y) in the plane is given by the expression x^2-y^2-4x+2y. What is the temperature of the coldest point on...
*October 19, 2014 by Trish Goal*

**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 is flying at 240 mph heading North 60 degrees East. The wind is blowing at South 30 degrees East at 30 mph. What is the largest and smallest angles?
*June 25, 2011 by Anonymous*

**physics**

a car is moving on a horizontal frictionless road and reches base of an upslope . what should be the speed of the car at the base of the upslope so that it can just reaCH its top without external force applied to it.(length of slope=15m, angle of slope=30degree, mass of car=...
*May 22, 2012 by anupriya*

**Physics**

The weight of an object on Earth is 350 newtons. On Mars, the same object would weigh 134 newtons. What is the acceleration due to gravity on the surface of Mars, given that it is 9.8 meters/second2 on Earth?
*December 16, 2012 by Plato*

**science**

How do you calculate the gravity of an object? equation needed h=1/2 gt^2 Solve the equation for g; g=2h/t^2 Set height is 2 foot, dropped small object from 2ft, timed at 0.3 seconds. Calculate the gravity of the object. Is this right? 2=1/2*9.8 t^2 t^2=2*2/9.8=0.40 t=0.40^ ...
*September 12, 2011 by Chris*

**NOVACC**

A circular loop of wire (radius = 6.0 cm, resistance = 40 miliamps) is placed in a uniform magnetic field that makes and angle of 30 degrees with the plane of the loop. The magnitude of the field changes with time according to B = 30 sin (20t)mT, where t is measured in s. ...
*April 1, 2013 by J*

**physics**

A 0.55 kg object connected to a light spring with a force constant of 20.0 N/m oscillates on a frictionless horizontal surface. If the spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the object. (b) Determine the speed of the object when ...
*June 29, 2011 by Sarah*

**Astronaut launches bowling ball**

A 100 kg astronaut carries a launcher loaded with a 10 kg bowling ball; the launcher and the astronaut’s spacesuit have negligible mass. The astronaut discovers that firing the launcher results in the ball moving away from her at a relative speed of 50 m/s. The astronaut in ...
*July 28, 2014 by David*

**H. Physics 11th grade**

while flying over the grand canyon, the pilot slows the plane down to one-half the velocity in item 3. If the wind's velocity is still 75 km/h toward the southeast, what will the plane's new resultant velocity be?
*September 29, 2010 by Abby*

**math cal**

A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest whole number.)
*November 17, 2010 by anna*

**calculus**

A plane flying horizontally at an altitude of 1 mi and a speed of 560 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 2 mi away from the station. (Round your answer to the nearest whole number.)
*October 2, 2012 by Anonymous*

**physics**

A regional airline flight consists of two legs with an intermediate stop. The airplane flies 380 due north from airport A to airport B. From there, it flies 260 due east to its final destination at airport C. Part A What is the magnitude of the plane’s displacement from its ...
*September 29, 2012 by sammy*

**PHYSICS**

while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.o m north, 250 m east, 125 m at angle theta =30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.
*November 19, 2012 by JOAN*

**physics**

An artillery shell is fired at an angle of 48.2 degrees above the horizontal ground with an initial speed of 1530 m/s. THe acceleration of gravity is 9.8 m/s^2. Find the total time and flight of the shell,neglecting air resistance.Answer in units of minutes. Find its ...
*June 23, 2011 by alexa*

**Physics**

Some object moves 220.0 m at an angle of 42° north of west. During this motion, a 68.0 N force acts on the same object, doing +5460.0 J of work on the object. Assuming the force is applied horizontal to ground, what is this force’s orientation? Is there more than one possible ...
*August 9, 2012 by Chad*

**SCIENCE**

A pilot of a light plane heads due north at air speed of 400km/h and wind is blowing from the west at a 60km/h.what is
*July 12, 2010 by ANTHONY*

**Physics**

An airplane ﬂies at airspeed (relative to the air) of 430 km/h . The pilot wishes to ﬂy due North (relative to the ground) but there is a 43 km/h wind blowing Southwest (direction 225◦). In what direction should the pilot head the plane (measured clockwise ...
*December 30, 2012 by Daniel*

**physics**

An object that has a mass of 36.0 kg is pushed along a horizontal surface with a force of 85.0 N at 30 degrees. If the force of friction is 52.0 N, what is the magnitude of the acceleration of the object?
*October 22, 2011 by Anonymous*

**SCIENCE**

Seawater of average salinity freezes at about: a. 32 degrees F b. 0 degrees C c. -2 degrees C d. -10 degrees F I think it's -2 degrees C but want to be sure. Please check for me. Thanks That's right. The freezing temp of sea water is given in that last wikipedia reference I ...
*December 8, 2006 by Pat*

**physics**

If 4.5 kg object is sitting at rest on a 30 degree incline that has a coefficient of static friction of .19, what is the net force down the plane? Does it start sliding?
*February 19, 2013 by Aaron*

**Physics**

A bomber is flying horizontally over level terrain at a speed of 250 m/s relative to the ground and at an altitude of 3.20 km. The bombardier releases one bomb. How far does the bomb travel horizontally between its release and its impact on the ground? Ignore the effects of ...
*April 14, 2011 by Chi*

**Science**

A 110.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 35.0 deg with the horizontal. Find the magnitude of the applied force F.
*October 26, 2011 by Mark*

**physics**

A box has a mass of 0.220 kg. It is on a very smooth (frictionless) horizontal surface and is acted upon by a force of 2.36 N at an angle of θ = 44.8° with the horizontal. The magnitude of the acceleration of the box is m/s2?
*May 29, 2014 by jacquie*

**physics**

A box has a mass of 0.345 kg. It is on a very smooth (frictionless) horizontal surface and is acted upon by a force of 3.76 N at an angle of θ = 57.1° with the horizontal. The magnitude of the acceleration of the box is m/s2?
*October 2, 2014 by n*

**Physics**

A brick of mass 1.0 kg slides down an ice roof inclined at 30 degrees with respect to the horizantal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 0.90s later? Ignore friction
*October 23, 2010 by Lisa*

**geometry**

triangles ABC and XYZ are congruent. Angle A is one half the size of angle B. Angle Y is 90 degrees. Angle C and angle Z are both 45 degrees. what is the measure of angle A.
*March 1, 2011 by Nana*

**math**

if triangles abc and xyz are congruent. angle a is one half the size of angle b. angle y is 90 degrees. angle c and angle z are both 45 degrees. what is the measure of angle a?
*March 26, 2012 by steve*

**PRECALCULUS**

An airplane is flying at a speed of 250 mph at an altitude of 4 miles. The plane passes directly above a radar station at time t=0. Find the distance s between the plane and the radar station after 5 minutes.
*May 27, 2011 by OSCAR*

**physics**

A plane drops a package of emergency rations to a stranded party of explorers the plane is traveling horizontally at 40m/s at a height of 100m from the ground find where the package strikes the ground ralative to the spot where it was dropped
*June 9, 2011 by job*

**physics**

A girl ties a toy airplane to the end of a string and swings it around her head. The plane's average angular speed is 2.2 rad/s. In what time interval will the plane move through an angular displacement of 3.3 rad?
*March 19, 2012 by Anonymous*

**physics**

A object of height 50cm is placed 100cm in front of a plane mirror.find (.A)the image distance. B)the distance between the object and the image . C)the height of the image
*July 7, 2013 by sherrif*

**Math**

Line m is perpendicular to plane A. how many planes can contain line m and alo be perpendicular to plane A? I think it my be infinite?
*April 1, 2010 by Becky*

**geometry**

if two lines are parallel, do they determine a plane? (is there one, and only one plane which contains the lines)
*October 9, 2014 by kahn*

**math**

if two lines are parallel, do they determine a plane? (is there one, and only one plane which contains the lines)
*October 9, 2014 by easy question*

**Chemistry**

Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a wavelength ë=3.091 A...
*November 30, 2012 by Roxy333*

**physics**

A 80 kg object slides at a 20 degree plane downward at 5m/s. An object 2 collides with object 1 by falling from 7 meter height and they stick together. Final speed of objects? I know the speeds would be the same. Would momentum equation work to solve this? The perfect ...
*October 25, 2012 by Laura*

**math**

Part 1: A long jumper leaves theground at an angle of 21.7 degrees to the horizontal and at a speed of 10.6 m/s. The acceleration of gravity is 9.8 m/s^2. How far does he jump? Answer in units of m. Part 2: What is the maximum height he reaches? Answer in units of m.
*October 25, 2010 by Sally *

**physics**

Part 1: A long jumper leaves theground at an angle of 21.7 degrees to the horizontal and at a speed of 10.6 m/s. The acceleration of gravity is 9.8 m/s^2. How far does he jump? Answer in units of m. Part 2: What is the maximum height he reaches? Answer in units of m.
*October 25, 2010 by autumn*

**physics**

A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction down the length of the incline. (A diagram shows a height of 5.0 m, the 10. m length of incline/hypotenuse and the 20. kg block sliding on the ...
*March 20, 2011 by Sejul*

**geometry **

A triangle has an angle that is 83 degrees and another angle that is 40 degrees. Using this information, what is the degree of the third angle of the triangle?
*June 2, 2012 by lupita *

**physics**

A 5.40 Kg package slides 1.47 meters down a long ramp that is inclined at 11.6 degress below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.313. Calculate the work done on the package by friction. Calculate the work done on the ...
*December 3, 2012 by clariza gonzalez*

**Physics**

Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object is fired directly ...
*June 29, 2012 by James*

**algebra**

The sum of the angles of a triangle is 180 degrees. If one angle measures x degrees, a second angle measures 3x degrees, and a third angle measures 7x degrees, express the measure of the fourth angle in terms of x.
*July 6, 2011 by nicole*

**help**

The CN Tower is 553m high. A person in a boat on Lake Ontario, at a point B due south of the tower, observes the top (T) of the tower at an angle of elevation of 8 degrees. At the same time, another person, at a point C on a bearing {S 85 degrees E } from the towerobserves an ...
*September 26, 2006 by Kaitlin*

**Physics**

if a 900-kg box slides down in a slide inclined at 25degrees to the horizontal and the coefficient of friction between the box and the slide is .0500, what is the friction force?
*December 9, 2008 by cookie monster*

**hydrodynamics**

a kite weighs 2.50 lb and has an area of 8 square-ft. The tension in the kite is 6.6 lb when the string makes an angle of 45degrees with the horizontal. For a wind of 20 mph, assume an angle of 8 degrees with the horizontal. Consider the kite essentially flat plate
*November 25, 2011 by jolly*

**Straight Lines**

The axes being inclined at an angle of 30°, find the equation to the straight line which passes through the point(-2,3) and is perpendicular to the straight line y + 3x = 6
*January 21, 2012 by Kewal*

**b.c.m school**

A 5.0-kg object moves on a horizontal frictionless surface under the influence of a spring with force constant 10 3 N/m. The object is displaced 50 cm and given an initial velocity of 10 m/s back toward the equilibrium position. (a) What is the velocity of the motion? (b) How ...
*December 28, 2012 by simran*

**Physics **

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...
*October 1, 2013 by Lola*

**Physics **

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...
*October 1, 2013 by Lola*

**PHYSICS**

while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.
*November 20, 2012 by JOAN*

**AP Physics B**

A track consists of a frictionless incline plane, which is a height of 0.5m, and a rough horizontal section with a coefficient of kinetic friction 0.02. Block A, whose mass is 1.5kg, is released from the top of the incline plane, slides down and collides instantaneously and ...
*August 9, 2013 by Gwladys*

**Physics**

A track consists of a frictionless incline plane, which is a height of 0.5m, and a rough horizontal section with a coefficient of kinetic friction 0.02. Block A, whose mass is 1.5kg, is released from the top of the incline plane, slides down and collides instantaneously and ...
*August 9, 2013 by Gwladys*

**Physics**

Force F causes displacement d of a 20-Kg object starting from rest along a frictionless path. F= 10 N i + 50 N j + 15 N k and d= 10 m i + 60 m k A) Calculate the work done by the force. B) Calculate the angle between the vectors F and d. C) Calculate the final speed of the ...
*April 22, 2009 by Sandhya*

**Physics**

A 75 kg pilot flies in her plane in a loop and notices that at the top of the loop, where the plane is completely uspside down for an instant, she hangs freely in her seat. the airspeed indecator reads 120m/sec. (a)what is the radius of the planes loop? (b) What is the ...
*May 3, 2010 by Maira*

**physics**

A skier starts from rest at the top of a hill that is inclined at 10.3° with the horizontal. The hillside is 210 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. ...
*October 16, 2011 by Anonymous*

**Physics**

A skier starts from rest at the top of a hill that is inclined at 9.8° with the horizontal. The hillside is 170 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. ...
*July 5, 2012 by Lauren*

**physics**

An air puck of mass m1 = 0.45 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass m2 = 1.10 kg is attached to it. The ...
*November 30, 2010 by melissa *

**physics help please**

an air puck of mass m1= 0.25 kg is tied to a string and allowed to revolve in a circle of radius R=1.0m on a frictionless horizontal table . the other end of the string passes through a hole in the center of a table and a mass of m2=1.0kg is tied to it. the suspended mass ...
*November 27, 2011 by joe*

**Algebra-based Physics**

In a rescue, the 76.0 police officer is suspended by two cables. The left cable has an angle of 35 degrees below the horizontal and the right cable has an angle of 48 degrees below the horizontal. Find the tension in the left cable. find the tension in the right cable. I will ...
*September 30, 2006 by Mike*

**physics**

an air plane takes a circuitous route. the journey is split into 4 sections. d1= 6000km (30.0 n of e) d2= 5600km (NW) d3= 4500km (35.0 S of W) d4= 7000km (12.0 W of S) - Find the resultant displacement of the air plane what do i do, and whta is the coreect answer for the ...
*January 14, 2008 by hi*

**Physics**

a pilot must fly a destination 520 km away in a direction of N30 degree E. The air speed of the plane is 320Km and the wind speed is 85 km/h E20 degree Suth. Find the heading of the plane and the time for the trop.
*October 4, 2009 by Jessica*

**PHYSICS 131 #2 **

a jetliner, traveling northward,is landing with a speed of 69m/s.once the plane touches down, it has a 750m runway in which speed is reduce to 6.1m/s. compute the avgerage acceleration (magnitude and direction) of the plane during landing.
*February 4, 2010 by Darrie *

**physics**

if a charged plane has a uniform surface charge density of −1.5×10−7C/m2 , what is the magnitude of the electric field just outside the plane’s surface? Express your answer to two significant figures and include the appropriate units.
*February 4, 2014 by jrfannin*

**science**

why are bricks burnt in kilns they arnt burnt, they are baked, it increases the hardness and water resistasnce over just letting them sit and dry. Bricks are ceramics. They have to get to a high temperature before the silica in the bricks melts and bonds together to make it ...
*November 27, 2006 by shourie*

**physics**

[20 pts] A 2.00 kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37 degrees. (a) What is ...
*August 19, 2010 by joy*

**Physical science**

An object is on a horizontal surface,three force act horizontal on the object.3N to the left,12N to the right,in to the left.at the same time,another three force act vertically on the object,4N upwards,10N downward,2N downwards determine the resultant horizontal and vertical ...
*January 28, 2013 by Anonymous*

**Physical science**

An object is on a horizontal surface,three force act horizontal on the object.3N to the left,12N to the right,in to the left.at the same time,another three force act vertically on the object,4N upwards,10N downward,2N downwards determine the resultant horizontal and vertical ...
*January 28, 2013 by Andiswa*

**calculus**

A plane is flying at 240mph and is climbing at 22 degrees. Find the rate at which it is gaining altitude when y=3miles
*June 10, 2011 by ron*

**physics**

A rigid rod holds a restaurant sign horizontally from the side of a building. The force due to gravity acting on the sign is 165N with the angle between the sign and the rod being 50 degrees. Ignoring the weight of the rod what is the magnitude of the tension in the rod?
*February 6, 2013 by Carolyn*

**Trig**

To avoid a steep descent, an airplane flying at 10,000m starts its descent 60km away from the airport. For the angle of descent to be constant, at what angle should the plane descend?
*December 7, 2013 by Shelley Nicole*

**physics**

Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the ﬁgure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg d) What is the magnitude ...
*October 19, 2012 by Anonymous*

**Physics**

Each of the following statements has 1, 2, or 3 conceptual flaws. Explain what is wrong with each sentence (I just need help finding a website for this) 1. A rocket moves through space because the exhaust from the rocket's engine pushes against the atmosphere. 2. If an ...
*February 1, 2008 by Aestas*

**physics...again :/**

A skier starts from rest at the top of a hill that is inclined at 9.9° with the horizontal. The hillside is 160 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. ...
*November 10, 2010 by clueless*

**physics**

A skier starts from rest at the top of a hill that is inclined at 11.0° with respect to the horizontal. The hillside is 190 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is ...
*October 11, 2011 by Anonymous*

**physics**

A skier starts from rest at the top of a hill that is inclined at 9.5° with respect to the horizontal. The hillside is 225 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is ...
*October 12, 2012 by monic*

**physics**

A skier starts from rest at the top of a hill that is inclined at 9.5° with respect to the horizontal. The hillside is 225 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is ...
*October 12, 2012 by monic*

**Physics **

A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?
*January 3, 2013 by Alex*

**physics**

A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?
*January 4, 2013 by al*

**physics**

A 73 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15° above the horizontal. (a) If the coefficient of static friction is 0.52, what minimum force magnitude is required from the rope to start the crate moving?
*December 2, 2010 by vm*

**College Algebra**

What is the answer to: The plane was purchased new in 2006; therefore, x = 0 represents the year 2006. X - axis (horizontal)= years starting from 0= 2006 and increasing by 0.5 years X - axis (vertical)= price in $ amounts from 24,000 to 240,000 a). List the coordinates of two ...
*December 31, 2011 by Stephen*

**physics**

A jet airplane is in level flight. The mass of the airplane is m = 8870 kg. The plane travels at a constant speed around a circular path of radius R = 9.55 miles and makes one revolution every T = 0.126 hours. What is the magnitude of the lift force acting on the plane?
*October 9, 2013 by kg90*

**physics-mechanics**

A high-speed test track for cars has a curved section — an arc of a circle of radius R = 1440 m. The curved section is banked at angle a = 19.1 degrees from the horizontal to help the cars to stay in the road while moving at high speeds. The acceleration of gravity is 9.8 m/s^...
*February 12, 2011 by J*

**Physics 12**

the 3 forces shown act on a object is in equilibrium. F1= 50N (E 60 degrees N), F2= 60N (E 30 degrees S ) Calculate the magnitude of the force F3 and the angle???? How to solve??
*October 19, 2014 by Roya*

**Physics**

The acceleration of a particle moving only on a horizontal xy plane is given by , where is in meters per second-squared and t is in seconds. At t = 0, the position vector locates the paticle, which then has the velocity vector . At t = 3.60 s, what are (a) its position vector ...
*February 3, 2014 by Catherine*

**physics**

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?
*October 7, 2011 by lawrence*

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