Friday

March 27, 2015

March 27, 2015

Number of results: 17,670

**trig**

angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your answer to two decimal ...
*November 28, 2012 by Barb*

**Trig**

A weather balloon is sighted between points A and B which are 5 miles apart on level ground. The angle of elevation of the balloon from A is 37 degrees and it's angle of elevation from B is 58 degrees. Find the height, in feet, of the balloon above the ground.
*March 5, 2014 by Nairb*

**physics**

A 1 kg steel ball strikes a wall with a speed of 9.99 m/s at an angle of 55.1 ◦ with the normal to the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.292 s, what is the magnitude of the average force exerted on the ball ...
*October 7, 2008 by Anonymous*

**physics**

A 1 kg steel ball strikes a wall with a speed of 9.99 m/s at an angle of 55.1 ◦ with the normal to the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.292 s, what is the magnitude of the average force exerted on the ball ...
*October 7, 2008 by Anonymous*

**Physics**

A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 29 degrees, the crate begins to slide downward. What is the coefficient of static friction between the crate and the ramp? At what angle does the crate begin to slide...
*February 22, 2010 by Grace*

**phy**

A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 22 deg , the crate begins to slide downward. 1-What is the coefficient of static friction between the crate and the ramp? 2-At what angle does the crate begin to ...
*July 18, 2011 by poul*

**Math (Pre-Calc)**

An airplane is flying east at a constant altitude of 28,000 meters. When first seen to the east of an observer, the angle of elevation to the airplane is 71.5 degrees. After 73 seconds, the angle of elevation is 51.6 degrees. Find the speed of the airplane.
*April 7, 2012 by Tina*

**physics**

A particle undergoes two displacements. The first has a magnitude of 160 cm and makes an angle of 105.0° with the positive x axis. The resultant displacement has a magnitude of 140 cm and is directed at an angle of 35.0° to the positive x axis. Find the magnitude and direction...
*September 13, 2012 by neeba*

**Math**

Which statement(s) is/are true?Select one of the options below as your answer:A. A 25° angle is congruent to a 25° angle.B. Two intersecting lines form two pairs of congruent angles.C. It is possible for congruent angles to add up to 90°.D. All of the above are true.
*July 24, 2013 by DD*

**algebra**

Hi can I get help with these two questions. 1. Everytime the pedals go through 360 degree rotation, the tires roate three imes. if the tires are 24 nches in diameter, what is the minimum numbe of comlete rotions of the pedls needed forr the bicycle to travel at least 1 mile. I...
*March 16, 2008 by Evan*

**physics**

A wood block, after being given a starting push, slides down a wood ramp at a constant speed. What is the angle of the ramp above horizontal? The fact that there aren't any numbers involved here and a certain angle is required confuses me. I know it involves Newton's second ...
*September 13, 2010 by Alura*

**Physics**

please check these answers for me When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular b. is perpendicular to the plane of motion c. is zero d. is directed toward the center of motion D What is the term for the net ...
*February 15, 2009 by teamjakeward*

**geometry**

How would the triangle look if angle Q is congruent to angle T and line segment PQ is congruent to line segment ST?
*December 14, 2010 by Anonymous*

**math**

Verify that the circles x2+y2 = 25 and (x−5)2+(y−10)2 = 50 intersect at A = (4, 3). Find the size of the acute angle formed at A by the intersecting circles. You will first have to decide what is meant by the phrase the angle formed by the intersecting circles.
*April 25, 2010 by Ella*

**Vectors**

E and C kick a soccer ball at the same time. E kicks it with a force of 120 N at an angle of 60 degrees and C kicks it with a force of 200 N at an angle of 120 degrees. Calculate The magnitude and direction of the resultant force.
*May 8, 2010 by Bobby*

**geometry**

Find the value of x in each right triangle. A.) short leg= 8 hyp= x and one angle equals 42 B.) short leg= 12 long leg= x and one angle equals 67 please help!!! i have a final tomorrow
*June 2, 2010 by monique n*

**Trigonometry**

the leaning tower of pisa is 179 ft tall. it leans at an angle of 5.5 degrees. if the angle of elevation of the sun is 60 degrees and the sun is opposite the side on which the tower leans, how long is the shadow that the tower will cast?
*August 30, 2011 by marvin*

**Physical Education 8A**

Will someone please check my answers? I starred my answers. 1. A person who does not recognize the signs of mental illness may not know he needs help. A. True* B. False 2. Which of the following is not a sign of psychotherapy? A. insight B. cognitive* C. medications D. group 3...
*November 4, 2014 by Please Check Answers*

**physics**

To make a bounce pass, a player throws a 0.60-kg basketball toward the floor. The ball hits the floor with a speed of 5.5 m/s at an angle of 72° from the vertical. If the ball rebounds with the same speed and angle, what was the impulse delivered to it by the floor? what ...
*October 19, 2011 by !!!!*

**physics**

can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...
*October 20, 2010 by Derek*

**physics**

can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...
*October 20, 2010 by derek*

**trig**

A submersible traveling at a depth of 250 feet dives at an angle of 15 degrees with respect to a line parallel to the water's surface. It travels a horizontal distance of 1500 feet during the dive. What is the depth of the submersile after the dive?Explain how the angle of the...
*April 15, 2012 by Sara*

**johnny**

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal. What is the magnitude...
*July 29, 2013 by franko*

**physics**

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal. What is the magnitude...
*July 29, 2013 by billo*

**Physics**

1)A beam of light passes from air to ethanol, with index of refracton of 1.36. If the angle of incidence ( 1)is 30.0 d/C, then calculate the angle of refraction, after light passes through ethanol and enters into air. sin-1((1.0003/1.36)sin30.0 21.6 d/C 2)An ____ lens is used ...
*April 8, 2008 by Jon*

**Physics**

What is the kinetic energy of an ideal projectile of mass 19.4 kg at the apex (highest point) of its trajectory, if it was launched with an initial speed of 29.2 m/s and at an initial angle of 46.9° with respect to the horizontal? I know kinetic energy equals half of mass ...
*October 21, 2014 by Anonymous*

**physics**

Three vectors, expressed in Cartesian coordinates. What is the angle of the resultant vector S, T, U measured from the positive x axis? x-comp y-comp S -3.5 +4.5 T 0 -6.5 U +5.5 -2.5 To find the resultant, i'm assuming I have to add the columns up. If that's the case I got x-...
*February 3, 2015 by heylo*

**math**

john is standing 100 metres away from a building.the angle of elevationto the top of the building is8 degrees .He now walks straight away from the building.When he stopes,the angle of elevation is only 1 degree and 48 seconds.How far away is now from the base of the building.
*September 26, 2011 by Pauline Duma *

**math**

john is standing 100 metres away from a building.the angle of elevationto the top of the building is8 degrees .He now walks straight away from the building.When he stopes,the angle of elevation is only 1 degree and 48 seconds.How far away is now from the base of the building.
*September 26, 2011 by Pauline Duma *

**Physics**

A 2 kg steel ball strikes a wall with a speed of 8.15 m/s at an angle of 54.4◦ with the normal to the wall. It bounces off with the same speed and angle, as shown in the figure. If the ball is in contact with the wall for 0.243 s, what is the magnitude of the average ...
*November 2, 2011 by Seth*

**Physics**

For a piece of glass n(red)= 1.635 and n(blue)= 1.689. The respective wavelengths are 680nm (red) and 430nm (blue). Find the angle between these two colors of light in the glass if they were originally in a white light beam in air incident on the glass at an angle of 44.
*March 24, 2012 by chi*

**physics**

Consider the motion of the hour hand of a clock. What angle does the hour hand make with respect to the vertical 12 o'clock position when it is at the times below? Express each angle in both degrees and radians, and measure angles going clockwise from the vertical axis. 5 o ...
*June 14, 2012 by lizz*

**physics**

A particle undergoes two displacements. The first has a magnitude of 135cm and makes an angle of 114° with the positive x axis. The resultant displacement had a magnitude of 183cm and is directed at an angle of 21.8° to the positive x axis. Find the magnitude of the second ...
*October 13, 2014 by alex*

**Physics**

A bob of mass = 0.250 is suspended from a fixed point with a massless string of length = 23.0 . You will investigate the motion in which the string traces a conical surface with half-angle = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle ...
*September 30, 2010 by tim*

**Physics**

A bob of mass = 0.250 is suspended from a fixed point with a massless string of length = 23.0 . You will investigate the motion in which the string traces a conical surface with half-angle = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle ...
*September 30, 2010 by tim*

**math 9**

in a park some people are launching model rockets to find the maximum height,x,the rocket reaches, a person stands 50.0m from the launch sight and measure the angle from the ground to the rocket at its maximum height. if the angle is 36 then the maximum height,x, of rocket is...
*June 17, 2010 by steph*

**Trig**

From a point A on the ground, the angle of elevation to the top of a tall building is 24.1 degrees. From a point B, which is 600 ft closer to the building, the angle of elevation is measured to be 30.2 degrees. Find the height of the building. PLEASE HELP ME!
*November 11, 2009 by Jennifer*

**Geometry**

If x is the midpoint of line vy and wz and the reason is given then wx=xz and vx=xy then angle wxv = angle yzx to get the triangle vwx congruent to triangle yzx then what would be the reasons after given to make the triangle congruent
*December 6, 2013 by Anonymous *

**Physics**

Two 75.0-kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 140 degrees, what is their speed after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of player 2 be at an ...
*April 4, 2011 by Aestas*

**Chem 1200**

Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found to be -1.50°C, what ...
*January 26, 2011 by Rukky*

**Chemistry 1200**

Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found to be -1.50°C, what ...
*January 26, 2011 by Rukky*

**Geometry (Checking)**

2.) Which is true about both Pappus's Theorem and Desargues' Theorem? Each theorem applies to spherical geometry. Each conclusion states that three points are collinear. <---- Each hypothesis is based on triangles. Each theorem involves a dilation. 3.) How many degrees are...
*May 28, 2014 by Jazy *

**physics**

A child pushes a toy box 4.0m along the fllor with a force of 6.00N directed downward at an angle of 37.0 degrees to the horizontal. a. How much work does the child do? b. Would you expect more or less work to be done if the child pulled upward at the same angle? Wouldn't this...
*September 13, 2006 by fluffy*

**chem**

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO3)2 (formula weight = 164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86 °C/m. whats wrong with my answer: molal: 0.069 moles Ca(NO3)2/0.115kg= 0.6 0....
*September 26, 2010 by jessie*

**Materials Science**

In this problem, you will construct the 2D Mohr's circle for two plane stress states defined in terms of the Cartesian components of the stress tensor in the x,y reference frame: [ σx,σy,τxy]. For each of these stress states, you must construct and use the Mohr'...
*October 10, 2014 by qwerty*

**Physics**

A light ray travels from water to air. If the ray strikes the water/air boundary at an angle of incidence of 46 degrees, what is the angle of refractiob in air? (n water = 1.33)
*December 1, 2011 by Jake*

**physics**

A light ray travels from water to air. If the ray strikes the water/air boundary at an angle of incidence of 46 degrees, what is the angle of refractiob in air? (n water = 1.33)
*December 2, 2011 by Josh*

**Physics**

(I'll try to describe this the best I can, it's a little hard without showing a picture) This question deals with projectile motion: An archer is standing 150 meters above another archer 450 meters away [so visually the 150m and 450m make the right angle]. The archer at the ...
*September 27, 2009 by Nikki*

**physics**

light travels from ethanol intro crown glass. what's the brewster angle in this situation? illustrate your answer with a light ray diagram. what's the signifcance of this angle of incidence? n1=1.36for ethanol nR=1.52 for crown glass tanangleB=nR/ni =1.52/1.36 =1.12 (48.2 ...
*January 16, 2010 by Lora*

**Pre Cal/Vectors**

Can someone show the steps involved in figuring out this type of problem? Given the magnitudes of vectors u and v and the angle Ό between them, find the magnitude of the sum u + v to the nearest tenth and the angle that the sum vector makes with u to the nearest degree. /...
*July 24, 2011 by Joe*

**math**

While riding your motorcycle, you break to miss hitting a dog. your tires leave a skid mark as you come to a stop. the skid mark forms four angles when it crosses the painted line on the side of the road. one angle formed a 62 degree angle. what other angles are formed?
*February 1, 2012 by katie*

**physics vectors w/angles**

A little girl is riding a sled horizontally in the snow, the combined mass of the girl and sled is 33.4 kg. She is being pulled by her parents. Mom is pulling her with a force of 5.18 N, at an angle of 20.0 degree E of N. Dad is pulling her with a force of 11.15 N, at an angle...
*November 27, 2009 by stacy*

**PHYSICS Please Help**

A box rests on a plank that is inclined to the horizontal. As the angle between the plank and the horizontal increases, does the component of the weight of the box parallel to the plank increase, decrease, or remain the same? Explain not sure The component of weight down the ...
*October 16, 2006 by Suzanne*

**Calculus**

Find an equation of the plane orthogonal to the line: (x,y,z) = (5,-6,-1) + t(3,10,-3) which passes through the point (-6,-1,5). so i got so far: x=5+3t y=-6+10t z=-1-3t Should be in form ax+by+cz+d=d Not sure where to go from there...
*September 10, 2007 by Vectors and Planes*

**physics**

what r the 4 forces on a plane whilst in flight?, im confused, i dont no whether it means like air resistance....or thrust.maybe u cud help me out :S
*November 26, 2007 by spider pig*

**Physics**

a hoop of radius .5 m & mass .2 kg is released from rest & rolls down an inclined plane. how fast is it moving when it has dropped a vertical distance of 3 m?
*March 4, 2010 by Anonymous*

**trig**

a plane flies due east for 500 km. and then turns on a heading of 120 degrees for 150 km. What are its distance and bearing from its starting point?
*December 20, 2010 by Anonymous*

**physics**

How long does it take a plane, traveling at a constant speed of 160 m/s, to fly once around a circle whose radius is 3450 m?
*January 24, 2011 by lucey*

**physics**

A skydiver jumps out of a plane. Does the mechanical energy of the jumper change while she is falling? Ignore the effects of air resistance.
*March 7, 2011 by kasey guilanski*

**math**

a paraTROOPER JUMPS FROM A PLANE.HOW MANEY FEET WILL HE FALL BEFORE HE REACHES TERMINAL VOLICITY.AND WHAT SPEED WILL IT BE IF HE WEIGHS 175 LBS.
*April 5, 2011 by deek*

**science**

Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
*October 3, 2011 by jenny*

**physics**

Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
*October 3, 2011 by jenny*

**physics**

A 1.0kg ball initially at rest rolls down a plane at 35 degrees. Find the net force. pls i really need help
*November 10, 2011 by ted*

**Physics**

A plane flies at 800km/h in stationary air. The distance to be traveled is 3000km. What was the wind speed if the journey actually takes 4.0 hours?
*February 1, 2012 by Amanda *

**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**

an airplane is flying in a horizontal of radius 1.0 km what must be the speed of the plane if the pilot is to experience a centripetal acceleration three times that of gravity.
*March 8, 2013 by King*

**physics**

A uniform sheet of surface current density Ks=Ky ay in z=0 plane. find the magnetic field strength H everywhere using ampere's law.
*June 8, 2013 by amgad *

**physics**

How long does it take a plane, traveling at a constant speed of 166 m/s, to fly once around a circle whose radius is 4000 m?
*June 30, 2013 by Justin S.*

**physics**

How long does it take a plane, traveling at a constant speed of 233 m/s, to fly once around a circle whose radius is 2090 m?
*February 26, 2015 by Anonymous*

**geometry**

write an expression for the sum of the angle measures in a regular polygan with n sides. then wirte an expression for the measure of each angle in a regular polygan with n sides.
*April 19, 2010 by emily*

**math**

the shadow of an electric pole is 5m long when the angle of elevation of the sun is 60 degree .find the length of the shadow when the angle of elevation of the sun is 45 degree.
*December 15, 2013 by Anonymous*

**physics**

A small spherical insulator of mass 1.90 10-2 kg and charge +0.600 µC is hung by a thin wire of negligible mass. A charge of −0.900 µC is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle č with the vertical. Find the angle č. ...
*September 3, 2009 by amber*

**pre calc**

EAch of 3 circles touch the other 2. Circle A=radius 8cm Circle B=radius 4cm Circle c=radius 1cm A triangle is formed by connecting the centers of the 3 traingles. Determine the largest angle for the traingle and which circle is the largest angle? Also what is the area? Please...
*December 8, 2011 by jim*

**physicsURGENT**

An 85 cm long pendulum with a 0.80 kg bob is released from rest at an initial angle of θ0 with the vertical. At the bottom of the swing, the speed of the bob is 2.8 m/s. What angle does the pendulum make with the vertical when the speed of the bob is 1.4 m/s?
*October 23, 2011 by jack*

**physics**

The 45-45-90 triangular prism shown in the figure has an index of refraction of 1.44, and is surrounded by air. A ray of light is incident on the left face at an angle of 46.0°. The point of incidence is high enough that the refracted ray hits the opposite sloping side. ...
*September 6, 2010 by RChanel*

**History Check Please (Don't Be Mean)**

1. LULAC supported Coal miners’ pension rights. union interests. Mexican Americans’ rights. African Americans’ rights. 2. The federal government tried to help farmers in all these ways EXCEPT paying them to plant trees as windbreaks. paying them to plant clover to enhance soil...
*March 22, 2015 by SmartyPants*

**English**

How many bulleted topics must be included in documentation relating to a detailed psychiatic analysis? Please explain your question more clearly. I'm not quite sure what you are asking either. However, psychiatric analyses of patients are usually analyzed in terms of thoughts...
*January 23, 2007 by haydee*

**physics**

Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends upward. Immediately ...
*February 21, 2010 by Anonymous*

**physics**

Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends upward. Immediately ...
*February 21, 2010 by nate*

**Physics**

a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 ...
*January 26, 2011 by Erica L*

**Physics help**

a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 ...
*January 26, 2011 by Erica L*

**physics**

A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface with coefficient of ...
*May 6, 2010 by Ariel*

**physics**

A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface with coefficient of ...
*May 6, 2010 by Ariel*

**trigonometry**

1)find the exact value indicated trigonometric function of θ, if θ is the angle is standard position whose terminal side contains the given point. (-2 ,√2); Find cos θ 2) find the length of the arc intercepted by a central angle of 35degree 28' in a circle...
*September 11, 2011 by sam*

**physics**

In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a weight of 1.00 ✕...
*October 19, 2014 by Joseph*

**Physics (repost)**

(I'll try to describe this the best I can, it's a little hard without showing a picture) This question deals with projectile motion: An archer is standing 150 meters above another archer 450 meters away [so visually the 150m and 450m make the right angle]. The archer at the ...
*September 27, 2009 by Nikki*

**physics**

A cannon res a cannonball from ground level at an angle of 18 above the horizontal, and the cannonball lands on the ground some distance away. If the muzzle velocity of the cannon remains unchanged, at what angle should the cannon be red so that the cannonball travels twice ...
*September 19, 2014 by kristen*

**physicssssss**

In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a weight of 1.00 106 N ...
*March 1, 2011 by hy*

**pre-calculus**

a ship passes by buoy b which is known to be 3000 yd from peninsula p. the ship is steaming east along line be and angle pbe is measured as 28 degrees. after 10 min., the ship is at s and angle pse is measured as 63 degrees. how far from the peninsula is the ship when it is at s?
*October 5, 2011 by tatiana*

**Trig**

From a point P on level ground, the angle of elevation of the top of a tower is 27°10'. From a point 23.0 meters closer to the tower and on the same line with P and the base of the tower, the angle of elevation of the top is 51°30'. Approximate the height of the tower. (Round ...
*June 26, 2012 by Bob*

**physics**

A rocket of mass 4.36 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 58.9° above the horizontal and has a magnitude of 9.61 × 106 N. Find the (a) magnitude and (b) direction of the rocket's acceleration. Give the direction as an angle above ...
*June 24, 2013 by sam*

**Math**

Circle Graphs Month | Snowfall | Percent | Angle Measure November | 1 | ? 1% | ? 3.6 December | 4 | ? 4% | ? 14.4 January | 5 | ? 5% | ? 18 February | 2 | ? 2% | ? 7.2 How would I make a circle graph? Or did I do something wrong? The month and snowfall were given and I found ...
*April 29, 2014 by Anonymous*

**science**

what combination of mediums will produce a stright line of light? how do you correct for hyperopia? how do you correct for myopia? what kind of people have an astigmatism? what part of the eye act as a lens and what part acts as a screen? how do different types of lenes bend ...
*March 3, 2013 by lily*

**8th Grade Math (Algebra1)**

I actually have a few different problems that are giving me trouble. The first: We have to use the motion problem formula: d=rt and make a table containing the elements: rate: * time: = distance ------------------------------ label #1 label #2 The Directions for this problem's...
*February 3, 2009 by Nicole C.*

**physics**

Three identical balls are thrown from the top of a building, all with the same initial speed. The first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of the ...
*October 5, 2010 by matt *

**Physics**

A girl places a stick at an angle of 60.0° against a flat rock on a frozen pond. She pushes at an angle and moves the rock horizontally for 2.00 m across the pond at a velocity of 4.00 m/s and a power of 160.0 W. What force did she apply to the stick? How much work did she do...
*February 12, 2012 by Pat*

**algebra**

Can someone please try and see if you understand what I'm asking. Says to use vertcal line test to determine which graph represents a function. one line is straight up and down a complete circle(which i think) an complete line from an angle line from an angle half way and then...
*September 18, 2012 by lee*

**physics**

An object of mass M = 924 g is pushed at a constant speed up a frictionless inclined surface which forms an angle č = 50 degrees with the horizontal as shown in the figure below. What is the magnitude of the force that is exerted by the inclined surface on the object? There is...
*October 10, 2009 by m2a*

**physics**

An object of mass M = 924 g is pushed at a constant speed up a frictionless inclined surface which forms an angle č = 50 degrees with the horizontal as shown in the figure below. What is the magnitude of the force that is exerted by the inclined surface on the object? There is...
*October 10, 2009 by m2a*

**physics**

A box of textbooks of mass 24.8 rests on a loading ramp that makes an angle with the horizontal. The coefficient of kinetic friction is 0.25 and the coefficient of static friction is 0.35. At this angle, how fast will the box be moving after it has slid a distance 4.9 along ...
*September 27, 2011 by Bradley*

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