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March 30, 2015

Search: The force acting on a particle varies as shown in the figure. (The x axis is marked in increments of

Number of results: 34,126

physics
Ten bags of top soil, each weighing 180 N, are placed on a 2.90-m long sheet of wood. They are stacked 0.50 m from one end of the sheet of wood, as shown below. Two people lift the sheet of wood, one at each end. Ignore the weight of the wood, how much force must each person ...
January 2, 2013 by Jamison

calc
standard equations of circles that have centers on line 5x-2y=-21 and are tangent to both axis. Any ideas?? First express the line as in point slope form y=(5/2)x - 21/2 The center must be on the line, so it is a point expressed as (x,(5/2)x - 21/2) In order for the circle to ...
September 26, 2006 by Melba

Physics
A construction supervisor of mass M = 83.7 kg is standing on a board of mass m = 30.5 kg. The board is supported by two saw horses that are a distance of 4.50 m apart. If the man stands a distance x1 = 1.30 m away from saw horse 1 as shown, what is the force that the board ...
December 17, 2007 by rory

physics
A construction supervisor of mass M = 83.7 kg is standing on a board of mass m = 30.5 kg. The board is supported by two saw horses that are a distance of 4.50 m apart. If the man stands a distance x1 = 1.30 m away from saw horse 1 as shown, what is the force that the board ...
December 20, 2007 by rory

Physics
Cn u plz gv explaination 2 d solutions steps by steps briefly? Cz i really dnt understand hw 2 apply d formula wen i revise it nw. [g=10 ms^-2 ] Two particles P & Q, of masses 0.2 kg & m kg respectively, are attached to the ends of a light inextensible string. The particle P ...
September 29, 2008 by LingSpirit

Physics Help Please!!!!
A car is at rest on a horizontal road. What is the value of the frictional force? Explain your answer. A bison stands at rest on the horizontal ground. What is the value of the frictional force? Explain. The normal force always has a direction perpendicular to the surface that...
October 9, 2014 by Tom

Physics - Help!
All, Please just help me in this, I will need you to please give me the clue-thanks. a flashlamp bulb is marked '2.5V,0.30A' and has to be operated from a dry battery of e.m.f 3.0V for the current p.d. of 2.5V to be produced across it. Why?
April 18, 2007 by Sola

geometry
Assume that the given angles have been measured, and calculate the angles (marked as x) that could not be found by direct measurement. a = 38 x = 1Your answer was incorrect, but has changed from what was graded.
September 15, 2010 by Anonymous

Math for educators 1
Jim bought two shirts that were originally marked at $40 each. One shirt was discounted 20% and the other was discounted 25%. The sale tax was 4.5%. How much did he spend in all?
January 7, 2011 by Aquana Moore

Mathematical for Educators 1
Jim bought two shirts that were originally marked at $40 each. One shirt was discounted 20% and the other was discounted 25%. The sales tax was 4.5%. How much did he spend in all
April 21, 2011 by Sandra

Math: permutation
Seven cards, each marked a letter can be arranged to spell NUMBERS. how many three letter code words can be formed with 2 consonants and one vowel? Thanks 😁
November 3, 2014 by Conor

trigonometry
The sprockets and chain of a bicycle are shown in the figure. The pedal sprocket has a radius of 4 in., the wheel sprocket a radius of 2 in., and the wheel a radius of 13 in. The cyclist pedals at 45 rpm. (a) Find the angular speed of the wheel sprocket. rad/min (b) Find the ...
November 29, 2012 by monic

physics
A 41.0-kg body is moving in the direction of the positive x axis with a speed of 306 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 8.0 kg, moves away from the point of explosion with a speed of 326 m/s along the positive y axis...
March 24, 2014 by Tsion

calculus
a solid lies between planes perpendicular to x-axis at x=0 and x=17,cross section perpendicular to axis interval 17 greater or equal x & x greater or equal 0 are squares of diagonals go from parabolas y=-2x^(0.5) & y=2x^(0.5). find the volume of the solid
March 27, 2012 by Anonymous

Physics
Vector V1 is 6N along the negative axis. Vector V2 is 4.5 N and point 45 degrees north of the x axis. Find the x and y components of each vector and find the resultant R=V1+V2with the components.
November 26, 2013 by Maddie

Calculus
Let R be the region enclosed by the graphs y=e^x, y=x^3, and the y axis. A.) find R B.) find the volume of the solid with base on region R and cross section perpendicular to the x axis. The cross sections are triangles with height equal to 3 times the length of their base.
May 13, 2014 by Michelle

mechanics 12
A 1.8 kg breadbox on a frictionless incline of angle θ = 37 is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 120 N/m, as shown in the figure below. The box is released from rest when the spring is unstretched. Assume that the ...
November 2, 2012 by kunal

physics
A man is pulling on a rope with a force of 88N directed t an angle or 20 degrees to the horizontal. What is the x component of this force? What is the Y component of this force? Answer in units of N This is what i did, but i dont know if its right: x: cos(20)88=82.69 N y: tan(...
July 2, 2011 by alexa

Physics
A solar sail is used to propel a spacecraft. It uses the pressure (force per unit area) of sunlight instead of wind. Assume the sail and its spacecraft have a mass of 245 kg. If the sail has an area of 62,500 m2 and achieves a velocity of 8.93 m/s in 12.0 hours starting from ...
May 25, 2012 by Karie

Physics
A 100kg trolley is being pushed up a rough 30° incline by a constant force. The friction force between the incline and the trolley is 110N. (a) Determine thd value of the constant force that will move the trolley up the incline at a constant velocity of 5m/s. (b) Find the ...
September 7, 2014 by Slavh

physics
The weightless strut in the figure below is not attached to the wall; it is prevented from falling only by friction. (Let w = 360 N, L = 5.25 m and h = 3.25 m.) (a) Find the magnitude of the force of friction between the wall and the strut. Correct: Your answer is correct. (b...
June 11, 2014 by Anonymous

Algebra question HELP!
Beatriz is creating graphs for her citys Parks Department. Beatriz is trying to persuade the Parks Department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to show the temperature ...
August 21, 2014 by Sdog

Algebra
f(x) = -4(x+2)(x - 5)^3 - 2, multiplicity 1, touches the x-axis and turns around; 5, multiplicity 3, touches x-axis and turns around I left (x+2) out of the equation. Can you explain to me these type of problems, I only understand a little bit of it.
October 23, 2007 by Tyra

physics
A limb, which is 1m long, moves through an angle of 30 degrees in 0.5 seconds. a) What is the average angular velocity of: i) Its end? ii) A point 30 cm from the axis of rotation? b) What is the linear velocity of: i) Its end? ii) A point 30 cm from the axis of rotation?
February 5, 2010 by Anonymous

physics
A limb, which is 1m long, moves through an angle of 30 degrees in 0.5 seconds. a) What is the average angular velocity of: i) Its end? ii) A point 30 cm from the axis of rotation? b) What is the linear velocity of: i) Its end? ii) A point 30 cm from the axis of rotation?
February 5, 2010 by Anonymous

Physics
A body moves in rectilinear motion along the x-axis with an acceleration of a = 24 - t - 6 t^2 . Starting with an initial position at the origin (x = 0) and an initial velocity of 4 ft/s to the left (along the negative x-axis), what is the position of the body at the end of 4 ...
May 14, 2010 by Anthony

physics
A person pushes a 17.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of = 48.0 to the horizontal (b) Calculate the horizontal retarding force on the mower (c) Calculate the normal force exerted vertically upward on ...
February 2, 2012 by kayla

Chemistry
My mind is bleeding again. I am trying to figure out the molarity of acetic acid in Vinegar. We used a standard solution of .613 Molars of NaOH. We added 33.75mL of NaOH to completely titrate/neutralize 25mL of Vinegar and we're supposed to be able to figure out the molarity ...
June 22, 2010 by Casey

Math
The base of a solid S is the simicircular region enclosed by the graph of y = the sqrt of [4-x^2] and the x-axis. If the cross sections of S perpendicular to the x-axis are squares, the the volume of S is...? I've worked this out a few ways using what I know abt finding the ...
May 7, 2007 by James

8.01x Classical Mechanics
Sliding Blocks (14 points possible) A small cube of mass 1.0 kg slides down a circular and frictionless track of radius 0.6 m cut into a large block of mass 4.0 kg as shown in the figure below. The large block rests on a horizontal and frictionless table. The cube and the ...
January 11, 2014 by Anonymous

Physics
One end of a uniform 3.20-m-long rod of weight Fg is supported by a cable at an angle of θ = 37 with the rod. The other end rests against the wall, where it is held by friction as shown in the figure below. The coefficient of static friction between the wall and the rod...
April 5, 2014 by Joe

physics
Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.00 , slowing your 970- car from 16.0 to 9.50 . What was the magnitude of the average force exerted on your car during braking? How far did you travel while braking?
September 23, 2011 by Anonymous

physics
In the figure below, a uniform sphere of mass m = 2.50 kg and radius r = 2.4 cm is held in place by a massless rope attached to a frictionless wall a distance L = 10.2 cm above the center of the sphere. (a) What is the tension in the rope? N (b) What is the force on the sphere...
December 13, 2008 by Jane

Physics
Two blocks of masses m1 = 2.00 kg and m2 = 4.50 kg are each released from rest at a height of y = 5.80 m on a frictionless track, as shown in the figure below, and undergo an elastic head-on collision. (a) Determine the velocity of each block just before the collision. Let the...
November 7, 2012 by Corey

PYHSICS
Vector A with arrow is directed along the positive y-axis and has magnitude 9.0 units. Vector B with arrow is directed along the negative x-axis and has magnitude 4.0 unit. (a) What are the magnitude and direction of A with arrow + B with arrow? magnitude Incorrect: Your ...
February 1, 2015 by LAIALI

calculus
Find the volume of the solid whose base is the region bounded by the graphs of y=x^3,x=1, and the x-axis, and whose cross sections perpenditular to the x-axis are semicircles. What would be the radius in this case? I thought it would just be x^3, but others are saying (x^3)/2...
January 7, 2007 by Jin

SkatingDJ
4. The number cube shown is rolled and the spinner shown is spun. Find P(an odd number and yellow). The number cube goes up to five. The spinner has four spaces. two are yellow, one is blue and 1 is green. 1/4 3/4 3/5 3/20
April 19, 2014 by PLS HELP MATH ASAP!!!!!

physics
A point charge of -4.00nC is at the origin, and a second point charge of 6.00nC is on the axis at x = 0.800m . Find the magnitude and direction of the electric field at each of the following points on the axis. x_2 = 17.0cm, x_3 = 1.30m , x_4=-17.0cm
September 12, 2008 by Erin

AP physics
Vector A has a magnitude of 8.00 units and makes an angle of 45.0 with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A + B and (b) the vector difference A B. Could...
August 23, 2009 by jackie

ibnozohr
A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)x, at various points along the x-...
February 24, 2013 by Anonymous

Physics
A trunk of mass m = 1.100 kg is pushed a distance d = 32.0 cm up an incline with an angle of inclination theta = 26.0 by a constant horizontal force P = 150. N. The coefficient of kinetic friction between the trunk and the incline is 0.330. a) Calculate the work done on the ...
October 19, 2012 by Steeve

math (geometry)
The pre-image of a reflection lies in quadrant II and the image is in quadrant III. which line could be the line of reflection? a) y=x b) y=-x c) x-axis d) y-axis if you can then please do explain whay. i have no clue!!! thanks for your help!
February 23, 2009 by jess

physics
A grindstone in the shape of a solid disk with diameter 0.520 and a mass of = 50.0 is rotating at = 860 . You press an ax against the rim with a normal force of = 250 (Figure 1) , and the grindstone comes to rest in 7.40 . Find the coefficient of friction between the ax and ...
May 3, 2013 by amy

Geometry
I don't know if this is the place to put it but anyways Complete each of the following problems in the space provided if you need more space attach additional sheets. You must show all work and/or an explanation in order to receive credit. 1. Older television screens have an ...
April 6, 2008 by Bob

physics
A block of mass m = 3 kg is attached to a spring (k = 28 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 6 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
March 28, 2012 by Angelina

Physics please help
A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The object starts from a ...
March 29, 2012 by Adam

physics
Two blocks connected by a string are on a horizontal frictionless surface. The blocks are connected to a hanging weight by means of a string that passes over a pulley as shown in the figure below, where m1 = 1.75 kg, m2 = 2.85 kg, and m3 = 4.95 kg. (a) Find the tension T in ...
February 8, 2011 by Anonymous

Calculus
Suppose that the region between the x-axis and the curve y=e^-x for x>=0 has been revolved around the x-axis. Find the surface area of the solid. I got 3*pi The book shows an answer of pi * [sqrt(2) + ln(1 + sqrt(2))] Where do I go wrong? For the sides of the surface, I ...
January 13, 2008 by mathstudent

Physics
A point charge of -14nC and +12nC is located 12cm along the x-axis. Determine the magnitude and direction of the electric field intensity at point P at the mid-point and 8cm perpendicular from the x-axis: p | | 8.0cm | | -14nC.---------------. 12 nC 6cm 6cm Please help getting...
November 24, 2010 by Eddie

physics
a mass m1 moves along the x-axis with velocity of magnitude v0 on a frictionless table. it strikes another mass m2 which is initially at rest. the mass m1 goes off along the the y-axis. if half the original kinetic energy is lost in the collision, with what speed and at what ...
November 30, 2010 by shamrakh

ap calc
A rectangle is inscribed into the region bounded by the graph of f(x)=(x^2-1)^2 and the x-axis, in such a way that one side of the rectangle lies on the x-axis and the two vertices lie on the graph of f(x). what is the maximum possible area of such a rectangle? Please help I ...
November 18, 2014 by Anonymous

AP Calc
A rectangle is inscribed into the region bounded by the graph of f(x)=(x^2-1)^2 and the x-axis, in such a way that one side of the rectangle lies on the x-axis and the two vertices lie on the graph of f(x). What is the maximum possible area of such a rectangle? My Work: y=(x^2...
November 22, 2014 by Luke

Physics 30
How do you figure out if a collision is elastics or inelastic, when it is dropped and then bounces? Do you figure out the velocity and then put that in the Ek formula?
February 23, 2009 by Jodine

Math
Two corresponding sides of similar polygons are in the ratio of 5:4. If the perimeter of the smaller figure is 40, what is the perimeter of the larger figure?
February 7, 2010 by Crystal

AED
Assess Leslie's teaching using the effective teaching characteristics outlined in Figure 11.1. I can't figure out what i am suppose to do
June 24, 2010 by Anonymous

math
A figure has 2 sets of parallel sides and 4 right angles. All of the sides are the same length. What are the 3 names for the figure?
November 29, 2012 by mythreyee

Physics
1)The direction of the force on doubly ionized helium atoms(alpha particles)moving at right angles to a magnetic field is opposite to the direction of the force given by the third right-hand rule. true. 2)The electromotive force is a force that makes charges flow from a point ...
April 11, 2008 by Jon

physics
A water-skier is being pulled at a steady speed in a straight line. her mass plus the mass of the ski is 65 kg. the pull of the tow rope on her is 520 N. a...i) What is the vertical component Y of the push of the water on the ski?? ....ii) What is the horizontal component X of...
September 3, 2012 by Mariam

College Physics
A 5.0 gram coin is placed 5.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 RPM is reached and the coin slides off. A.) What is the coefficient of ...
March 23, 2010 by L**

physics
A 7600 rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25 and feels no appreciable air resistance. When it has reached a height of 560 , its engines suddenly fail so that the only force acting on it is now gravity.What is the maximum ...
October 2, 2012 by Anonymous

physics
A 7600 rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25 and feels no appreciable air resistance. When it has reached a height of 560 , its engines suddenly fail so that the only force acting on it is now gravity.What is the maximum ...
October 2, 2012 by Anonymous

physics
An object is placed in front of a concave mirror, 16.0 cm from the mirror's focal point. The image formed by the mirror is two times farther away from the focal point. Calculate the focal length of the mirror. There are actually two possible image distances di that satisfy the...
February 12, 2015 by Ted

physics
two point charges of 2 c and -3c are separated by 6cm what is the magnitude of the electrostatic force between them? and is the force attractive or repulsive? explain and what happens to the magnitude of the force when the distance is increased by a factor of 2 to 12cm
February 4, 2013 by debra

math
So i need to figure out what the angle and speed was of a foot ball that traveled 59 yards how can i figure that out? what formula can i use?
August 8, 2011 by Kate

Math
I know this is simple arithmetic but i just cant seem to figure out the proccess in how to figure it out. X = 0.11X + 3.366 i know that X = 3.8 but i dont now how to get it
September 6, 2011 by ChemLover

Math
I need to do a project to figure capacity volume of a stationary cabinet with three shelves. I am confused about how to figure this with the shelves.
July 24, 2013 by Gina

6th grade math
Will some please help me figure this out??? ?x?/?+?x?/?-?=6 You can only ues these numbers to figure this out, 2,4,5,7,8,9,10
April 14, 2009 by Peyton

6th ggrade math
Will some please help me figure this out??? ?x?/?+?x?/?-?=6 You can only ues these numbers to figure this out, 2,4,5,7,8,9,10
April 14, 2009 by Peyton

math geometry
if a figure has five equilateral triangles and one pentagon, and the pentagon is 90 cm, what is the perimeter of the whole figure
March 12, 2012 by chandan

elementary
geometry a figure has 3 more sides than a pentagon.write an expression for the number of sides the new figure has.
October 29, 2012 by swetha

Biology
The matching strand to the one in Figure 12-7, reading from the bottom up, would be??? the figure is (from the bottom up) T C G A please help im so lost. :(
December 17, 2012 by BaileyBubble

Basic Biomechanics
A car teeters on the edge of a cliff. A eagle weighing 55 N lands on the hood 1.1 M from the edge of the cliff which functions as an axis. At the same time, an owl weighting 44 N lands on the trunk 1.5 m from the axis. What are the torques exerted by the birds? What will ...
June 8, 2012 by Joshua Mclaurin

physics
A positive charge q1 = 2.70 uC on a frictionless horizontal surface is attached to a spring of force constant k as in the figure. When a charge of q2 = 8.60 uC is placed 9.50 cm away from the positive charge, the spring stretches by 5.00 mm, reducing the distance between the ...
November 7, 2012 by Brette

physics
A 0.55 kg block of ice is sliding by you on a very slippery floor at 4 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.0025 seconds. The block eventually slides at an angle of 23 degrees from its original ...
January 23, 2014 by Sandy

Physics *work shown ~ pls help!
An electron is accelerated by a 6.4 kV potential difference. The charge on an electron is 1.60218 10^−19 C and its mass is 9.10939 10^−31 kg. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.1 cm? Answer in ...
April 15, 2011 by cr

Chemistry
I am given that volume of an unknown acid is 25 mL, volume of NaOH is 13 mL and concentration of NaOH is 1.0 M. I have a graph of a titration curve where the equivalence point is pH=9 (pH on y axis and volume of NaOH on x axis) How would i find the pKa value as well as the Ka ...
August 13, 2014 by Liz

trig/physics
Three positive particles of equal charge +11.o micro C, are located at the corners of an equilateral triangle of sides 15.0cm. Calculate magnitude and direction of the net force on each particle. DUUUUUUUUUH! THIS IS SO EASY! LOOK IN YOUR BOK, IDIOTIC DUDE! R U A BOY AND HOT, ...
February 1, 2007 by matt

Physics
A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 85 kg. A person pushes on the outer edge of one pane with a force of F = 63 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular ...
April 22, 2007 by Papito

Physics
Charged particles such as ions can separate the charges inside of overall electrically neutral atoms, thus making an electric dipole. A dipole is characterized with a dipole moment p=αEexternal, where α is the polarizability of an atom, and Eexternal is the external ...
July 1, 2013 by Mary

Math = graphing
my daughter has to make a graph to show the number of deaths in 1593 as compared to the number of those deaths caused by the bubonic plague. The months are given (March thru December) with the total of each during each month. She is unsure as to what to put on the x axis and y...
October 22, 2007 by Lisa

Physics
A box of mass m1 = 10.0 kg rests on a smooth, horizontal floor next to a box of mass m2 = 5.0kg. You push on the box 1 with a horizontal force of F = 31.8 N: a.)What net force on box 2 will cause it to have this acceleration? b.)What the force on box 1 on box 2? (In other ...
February 20, 2011 by Brandon

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of 40 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / 3 . If the third force is n3 Newtons, what is n3?
January 12, 2012 by frank

Algebra1
Please check these 25. If a dress were 20% off of the marked price of $32.00, how much would it cost? $25.60 26. Write 1,000,000,000 in scientific notation 1.0 x 10^9 27. (3.0 x 10^2) x (2.0 x 10^6) = ? 6.0 x 10^-4
June 10, 2010 by y912f

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

Geometry
I need help with vertices! The vertices of triangle FGH are F(1,1), G(3,-5),H(6,0). Find the coordinates of the vertices after a refelection over the y-axis. I'm not sure how to do this. Is there a certain formula I need to know? The reflection across the y-axis negates the x ...
September 13, 2006 by Madi

Calculus [rotation of region bounded by curves]
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=3x^2, x=1, y=0 about the x-axis
November 30, 2012 by Ali

geometry
Looking at formulas, which 2 shapes describe this relationship: the area of the 2 dimensional shape is one-fourth the surface area of the 3-demensional figure? Looking at formulas, which two figures describes this relationship: the volume of the first 3-dimensional figure is ...
October 30, 2011 by Maria

Dynamics
True or false (Each question carries 1 marks) (i) A rigid body is an idealization of the behavior of a body. (ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h. (iii) Constancy of areal velocity for a central force motion of a ...
July 31, 2012 by Rajan

English 2
(From A Separate Peace) 9. Finny's behavior in the snowball fight suggests that his life is a. one long struggle b. based on disorder and unpredictability c. governed by strong loyalties d. marked by a basic dishonesty B? Or C..not sure Thanks -MC
October 15, 2010 by mysterychicken

geometry
Two corresponding sides of similar polygons are in the ratio of 2 : 7. If the area of the smaller figure is 8 square meters, what is the area of the larger figure?
November 12, 2009 by Matt

math
Attach 6 trapezoids to one hexagon for each figure Figure 1: One line of symmetry and no rotational symmetries (other than 360 degrees)
August 26, 2012 by danny

French
my teacher marked these phrases as wrong but i don't know what about them is wrong: 1. je revelerais sans prevenir 2. j'ai vendu mes robes plus jolies both of them need "un mot a ajouter"
October 10, 2007 by JJ

Math
Consider a die with 8 sides, marked one, two, three, and so on. assuming equally likely outcome, find the probability that the sum of two dice is the given number. If p(10)=
June 13, 2012 by Linda

chemistry
A thermometer scale is calibrated (marked off) in a degree Celsius from 1 oC to 50 oC. Determine how many significant figures should be used to express the outdoor temperature if the temperature is more than 1 oC and less than 10 oC: (A) 1 (B) 2 (C) 3 (D) 4
July 15, 2013 by Janaiby

physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / 1.73 . If the third force is n3 Newtons, what is n3? look...
January 12, 2012 by frank

Calculus
Find the area of the shaded region given two points and the function y=cosx. Here's a figure (page 4 figure 7) math.upenn.edu/~deturck/m103/rogawski/chap6odd.pdf
May 2, 2011 by Nickie

math
Referring to the figure, think about first picking a card and then rolling the die. Give the probability in simplest form. P(A, 1) = ____ the figure has 1 A,2 B, 3 C, and a 6 side cube. i am confused with this problem.. please help?
April 5, 2012 by Cheril

physics
e4) a rope applies a horizontal force of 190 N to pull a crate a distance of 2 m across the floor. A frictional force of 50N opposes this motion a) what is the work done by the force applied by the rope? b)what is the work done by the frictional force? c)what is the total work...
February 12, 2012 by Anonymous

Physics
A rope applies a horizontal force of 208 N to pull a crate a distance of 1.91 m across the floor. A frictional force of 154 N opposes this motion. (a) What is the work done by the force applied by the rope? (b) What is the work done by the frictional force? What is the total ...
July 2, 2014 by Anonymous

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