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March 12, 2014

# Search: A 2.0 particle moving along the x-axis experiences the force shown in the figure . The particle\&#39;s velocity is 4.7 at

Number of results: 53,998

Calculus, Related Rates
A particle at point A is 50 mm away from a second particle at point B. The first particle is moving toward point B at a constant rate and the second particle is moving at a right angle to the line AB at a rate that is 1/3 of the rate of the first particle. The particles get ...
Tuesday, April 17, 2012 at 6:25pm by Jason

physics help
The magnitude of the velocity of a particle which starts from rest 2 ft below the origin when t = 0 and moves along a vertical axis is directly proportional to the time after starting. The displacement of the particle during the time interval from t = 1 sec to t = 2 sec is 3 ...
Thursday, January 20, 2011 at 2:00pm by stan

physics help
The magnitude of the velocity of a particle which starts from rest 2 ft below the origin when t = 0 and moves along a vertical axis is directly proportional to the time after starting. The displacement of the particle during the time interval from t = 1 sec to t = 2 sec is 3 ...
Thursday, January 20, 2011 at 2:29pm by stan

physics
shows a plot of potential energy U versus position x of a 0.310 kg particle that can travel only along an x axis under the influence of a conservative force. The graph has these values: UA = 9 J, UC = 20 J and UD = 24 J. The particle is released at the point where U forms a “...
Monday, October 10, 2011 at 12:47pm by Anonymous

Physics
As the positive particle approaches the positive nucleus it experiences a retarding force. The work done against this force is equal to the change in kinetic energy of the particle. In this case, the particle stops at the given distance from the nucleus, so all the Ke is used ...
Thursday, April 30, 2009 at 8:17pm by Damon

math
the velocity in m/sec of a particle moving along the x-axis is given by the function v(t) = 7cos3t, 0 < t < pi/2 Find the particle's displacement for the given time interval Displacement is the ending point minus the starting point. Ending point is at t=PI/2
Monday, April 16, 2007 at 8:44pm by kasee

college physics
Each of four particles moves along an x-axis. Their coordinates (in meters) as functions of time (in seconds) are given by: Particle #1: x(t)=2t^2-4 Particle #2: x(t)= -3t-4 Particle #3: -2t^2-4 Particle #4: 2 *[sq. root (t+1)] -4 Which of these particles are speeding up for 0...
Tuesday, August 24, 2010 at 3:30am by Thomas

calculus
A Particle moves along the x-axis so that at any time t>0, its acceleration is given by a(t)= ln(1+2^t). If the velocity of the particle is 2 at time t=1, then the velocity of the particle at time t=2 is? The correct answer is 3.346, but how?
Tuesday, March 11, 2008 at 12:33pm by D-MO

physics
Two forces, 1 = (3.85 − 2.85) N and 2 = (2.95 − 3.65) N, act on a particle of mass 2.10 kg that is initially at rest at coordinates (−2.30 m, −3.60 m). (a) What are the components of the particle's velocity at t = 11.8 s? = m/s (b) In what direction is ...
Friday, March 7, 2014 at 9:26pm by Anonymous

Calculus
A particle starts at the point (5,0) at t=0 and moves along the x-axis in such a way that at time t>0 its velocity v(t) is given by v(t)= t/(1+t^2). a). Determine the maximum velocity of the particle. Justify your answer. b). Determine the position of the particle at t=6. c...
Wednesday, January 29, 2014 at 4:38pm by Rasheda

physics
Two particles are fixed on an x axis. Particle 1 of charge 47.9 μC is located at x = -5.87 cm; particle 2 of charge Q is located at x = 32.3 cm. Particle 3 of charge magnitude 52.8 μC is released from rest on the y axis at y = 15.1 cm. What is the value of Q if the ...
Thursday, December 13, 2012 at 10:47am by Anonymous

physics
a horizontal force of 8.0 N is used to pull a 20-N wooden box moving toward the right along a horizontal,wood surface,as shown.The diagram below shows the vector force acting representing the normal force acting on the box
Sunday, October 24, 2010 at 3:33pm by jobelle

A single conservative force = (6.0x - 12) N where x is in meters, acts on a particle moving along an x axis. The potential energy U associated with this force is assigned a value of 23 J at x = 0. (a) Write an expression for U as a function of x, with U in joules and x in ...
Tuesday, October 23, 2012 at 12:05am by member of physics

ap calculus
a particle moves along the x axis in such a way that its acceleration at time t, t>0 , is given by x(t)= (ln x)^2. at what value of t does the velocity of the particle attain its maximum
Friday, April 5, 2013 at 10:54pm by bob

Physics
A block is sent up a frictionless ramp along which an x axis extends upward. The figure below gives the kinetic energy of the block as a function of position x; the scale of the figure's vertical axis is set by Ks = 46.0 J. If the block's initial speed is 4.50 m/s, what is the...
Thursday, December 15, 2011 at 4:08pm by Jessie

calculus
4. A particle starts at the point (5, 0) at t = 0 and moves along the x-axis in such a way that at time t > 0 the velocity is given by v(t)=t/(1+t^2) a. Determine the maximum velocity attained by the particle. Justify your answer. b. Determine the position of the particle ...
Sunday, March 25, 2012 at 1:28am by Tiffany

College Physics
particle 1 of charge q1 = 1.04 ìC and particle 2 of charge q2 = -2.99 ìC, are held at separation L = 10.8 cm on an x axis. If particle 3 of unknown charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 is zero, what must be the (a)x and...
Friday, July 6, 2012 at 10:38pm by Stephanie13

PHYSICS
a MAGNET CAN EXERT A FORCE ON A MOVING CHARGED PARTICLE, BUT IT CAN NOT CHANGE THE PARTICLE'S KINETIC ENERGY. WHY?
Wednesday, February 6, 2008 at 2:34am by tina

Physics
A magnet can exert a force on a moving charged particle, but it cannot change the particle's kinetic energy. Why not?
Saturday, February 9, 2008 at 2:35am by Heather

General Physics
A force Fx acts on a particle. The force is related to the position of the particle by the formula Fx = (5.9 N/m3) x3. Find the work done by this force on the particle as the particle moves from x = 0.9 m to x = 22 m. Answer in units of J
Friday, July 26, 2013 at 1:17pm by Charles

calculus
5. A particle moves along the x-axis in such a way that its position at time t is given by x=3t^4-16t^3+24t^2 for -5 ≤ t ≤ 5. a. Determine the velocity and acceleration of the particle at time t. b. At what values of t is the particle at rest? c. At what values of ...
Monday, December 5, 2011 at 6:46am by fareha

Physics
you know the equation for force in a magnetic field for a moving particle. Find force. then set that force equal to centripetal force, mv^2/r, and solve for r.
Thursday, April 4, 2013 at 2:31pm by bobpursley

Physics
Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (B = 4q and C = 6.5q. Let the +x-axis be pointing to the right.) F = ...
Saturday, March 30, 2013 at 11:14am by Sofia

Pre-Calc
Here I am again stuck with another geometry type question. Here goes: A rectangle is inscribed between the x-axis and the parabola y=36-x^2 with one side along the x-axis. He drew the picture with the parabola at points (-6,0) (6,0) (0,6) the rectanle is drawn inside the ...
Saturday, October 3, 2009 at 11:19am by MUFFY

Physics
F1 and F2 are two horizontal forces of 70 N each, acting on a wagon. They are at 45° to the x-axis and at right angles to each other. A third force, F3, also 70 N, acts along the positive x-axis. What if, instead, F2 acted in the opposite direction from what is shown? Find the...
Sunday, September 23, 2012 at 8:48pm by arcos15

physics
The position vector r of a particle moving in the xy plane is r=2ti+2sin[(pi/4)t]j , with is in meters and t in seconds. (a) Calculate the x and y components of the particle's position at , and 4.0 s and sketch the particle's path in the plane for the interval . (b) Calculate ...
Sunday, March 10, 2013 at 3:34pm by Anonymous

physics
A particle of mass 1 kg initially at rest is displaced along the x-axis by 127 meters in a time of 20 seconds. What is the net force acting on the mass?
Tuesday, December 6, 2011 at 6:38pm by Anonymous

Calculus
When a particle is located a distance x meters from the origin, a force of cos(x/4) newtons acts on it. How much work W is done in moving the particle from x = 1 to x = 3?
Sunday, December 4, 2011 at 5:42am by Ethan

Math
Two particles X and Y joined by a rigit rod of negligible mass, move along a smooth horizontal plane. Particle X has mass 7.7kg and is pushed by an external force Fx of magnitude 73.01N. Particle Y has mass 5.68kg and is pulled along the plane by an external force Fy of ...
Friday, September 7, 2012 at 10:31am by Anonymous

physics
The velocity of a particle constrained to move along the x-axis as a function of time t is given by: v(t)=-(15/t_0) sin(t/t_0). a)If the particle is at x=4 m when t = 0, what is its position at t = 4t_0. You will not need the value of t_0 to solve any part of this problem. b)...
Friday, November 26, 2010 at 6:57pm by bobjahng2

Physics 101
A uniform sign is supported at P as shown in the figure. If the sign is a square 0.8 m on its side and its mass is 10 kg, what is the magnitude of the horizontal force that P experiences? ANSWER: 25 N 49 N 98 N 0 N
Sunday, October 27, 2013 at 2:10pm by A.B.

Physics
I recommend you use your right hand rules for the magnetic force. In the force of E, the particle is attracted/repelled in the direction of E. In magnetic terms, the moving particle is moved ninety degrees from the direction of current.
Saturday, March 29, 2008 at 6:54pm by bobpursley

physics
Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 = 25¢ª. If the lemon half is ...
Wednesday, January 26, 2011 at 4:05pm by jr

Physics
Two sinusoidal waves with the same amplitude of 9.11 mm and the same wavelength travel together along a string that is stretched along an x axis. Their resultant wave is shown twice in the figure, as valley A travels in the negative direction of the x axis by distance d = 60.0...
Thursday, January 31, 2013 at 6:28pm by Anonymous

Physics
Two sinusoidal waves with the same amplitude of 9.11 mm and the same wavelength travel together along a string that is stretched along an x axis. Their resultant wave is shown twice in the figure, as valley A travels in the negative direction of the x axis by distance d = 60.0...
Thursday, January 31, 2013 at 6:48pm by Anonymous

calculus
A particle moves on the x-axis so that its velocity at any time t is given by v(t) = sin 2t. At t = 0, the particle is at the origin. a)For 0 ≤ t ≤ π, find all values of t for which the particle is moving to the left. b)Write an expression for the position of ...
Monday, April 30, 2012 at 5:45am by Naseba

Calculus
Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3. 1. For 0 is less than or equal ...
Wednesday, December 19, 2012 at 11:52am by Madeline

Calculus
Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3. 1. For 0 is less than or equal ...
Wednesday, December 19, 2012 at 5:29pm by Madeline

Calculus
Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3. 1. For 0 is less than or equal ...
Wednesday, December 19, 2012 at 9:38pm by Madeline

Physics
A 0.60-kg particle moves along the x-axis. Its potential energy is given by U(x)=5x^2, where U is joules and x is in meters. If the particle has a speed of 3.0m/s what it is at x=1.2m, its speed when it is at the origin is?
Sunday, October 10, 2010 at 4:35am by Dana

Physics
A particle starts from the origin at t = 0 with an initial velocity of 8.0 m/s along the positive x axis. If the acceleration is (-3.7 + 2.5 ) m/s2, determine the velocity and position of the particle at the moment it reaches its maximum x coordinate.
Wednesday, August 29, 2012 at 5:47pm by Leena

physics
A particle starts from the origin at t = 0 with an initial velocity of 5.4m/s along the positive x axis.If the acceleration is (-3.4 i + 4.9 j )m/s^2, determine (a)the velocity and (b)position of the particle at the moment it reaches its maximum x coordinate.
Thursday, February 7, 2013 at 9:33pm by Anonymous

physics
Particle 1 with a momentum of 126.2 kg·m/s along the x axis, strikes particle 2, which is initially motionless. After the collision, particle 1 has an x component of momentum, p1x = 82.0 kg·m/s and a y component, p1y = 46.8 kg·m/s. What are p2x and p2y, the x and y momentum ...
Wednesday, October 16, 2013 at 5:45pm by Anonymous

physics
if 3e charge is at the origin and the magnesium nucleus is 3cm from the origin in the +x direction, at what position along the x- axis should an electron be placed so that the electron experiences no net force?
Saturday, November 9, 2013 at 1:54pm by james

Physics
A body of mass 3 kg experiences a force F=(2i +2j) N. If its initial velocity v=( -8i + 4j) m/s, then the time at which it will have a velocity just along the y-axis is ? (The expressions contain vector notations above them)
Sunday, March 31, 2013 at 8:05am by Clandestine

Calculus
We do not see the figure, but could probably help anyway. Along whichever axis you do the integration, the method is to cut up the volume into slices perpendicular to the x-axis, say. Each slice is of thickness dx and the width and height will be a function of y and z, which ...
Sunday, November 21, 2010 at 8:20pm by MathMate

Physics
F=6kt This force acts on a particle of mass "m" that moves along a line. If the particle starts from rest, determine its velocity and position at time t.
Monday, November 12, 2012 at 2:18pm by shawn

physics
A particle starts from the origin at t = 0 with an initial velocity of 5.5 m/s along the positive x axis.If the acceleration is (-2.8i + 4.1jm/s^2, determine (a)the velocity and (b)position of the particle at the moment it reaches its maximum x coordinate.
Sunday, October 16, 2011 at 3:26am by julia

Physics
It is not clear what they are asking for. Does the particle start with zero velocity? You ask for a final velocity and yet they tell you what the final speed is. The velocity direction will remain along the axis, if it started out that way. The E field will be uniform as the ...
Sunday, February 14, 2010 at 12:54am by drwls

PHYSICS!!!
but which particle experiences the greatest force?
Sunday, March 23, 2008 at 6:01pm by Karen

Ap Phyics
Figure shows an overhead view of a 0.024 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 6 N and is at ¥è1 = 25¢ª. Force F2 has a magnitude of 10 N and is at ¥è2 = 27¢ª. If the lemon half is ...
Saturday, April 21, 2012 at 7:02pm by Alexander

physics
A particle moves along the x-axis according to the equation x = 50.0t + 10.0t^2, where x is in meters and t is in seconds. Calculate the average velocity of the particle during the first 2.30 s of its motion.
Saturday, September 19, 2009 at 1:57pm by Anonymous

Physics
A particle starts at the origin at t=0 with an intial velocity of 5.0m/s along the positive x axis. If the acceleration is (-3.0,4.5) m/s^2, determine the velocity and position of the particle at the moment it reaches its maximum x coordinate. You can't use a calculator.
Friday, September 6, 2013 at 12:57pm by Rebecca

Physics (Gravitation)
In Fig. 13-25, three particles are fixed in place. The mass of B is greater than the mass of C. Can a fourth particle (particle D) be placed somewhere so that the net gravitational force on particle A from particles B, C, and D is zero? If so, in which quadrant should it be ...
Thursday, March 29, 2012 at 7:38pm by M

Is particle 2 at x = 0, y = -22 cm? If so, the net force on P3, F3, is always along the x axis, and is zero at x=0. F3 = 2*k*q1*q3*x/(x^2 + a^2)^3/2 where a = 22 cm Maximum force occurs where dF3/dx = 0 I get it to be where x = 22 cm/sqrt2 = 15.55 cm See what you get, and use ...
Sunday, April 3, 2011 at 10:49pm by drwls

Physics
A scientist has devised a new method of isolating individual particles. He claims that his method enables him to detect simultaneously the position of a particle along an axis with a standard deviation of 0.12 nm and its momentum component along the axis with a standard ...
Monday, August 16, 2010 at 11:56am by Brian

physics
4)A bug is moving east at 1 m/s. A semi-truck is moving west at 45 m/s. They collide and the bug is splattered across the windshield of the semi and now travels west.At the point of impact, which of the following is true about the force of the bug acting on the semi and the ...
Tuesday, April 1, 2008 at 10:08am by Jon

physics
4)A bug is moving east at 1 m/s. A semi-truck is moving west at 45 m/s. They collide and the bug is splattered across the windshield of the semi and now travels west.At the point of impact, which of the following is true about the force of the bug acting on the semi and the ...
Tuesday, April 1, 2008 at 3:18pm by Jon

If the 3e charge is at the origin and the Magnesium nucleus is 3cm from the origin in the +x direction, at what position (in centimeters) along the x-axis should an electron be placed so that it (the electron) experiences no net force? x =
Friday, November 8, 2013 at 2:10pm by sied

calculus
rectangle is inscribed between the x-axis and the parabola y=16-x^2 wiht one side along the x-axis as shown below
Sunday, October 30, 2011 at 10:35pm by khallid

physics
An unstable nucleus of mass 17x10^-27 kg, initially at rest, disintegrates into 3 particles. One of the particles, of mass 5x10^-27kg, moves along the positive y axis with a speed of 6.0x10^6m/s. Another particle, of mass 8.4x10^-27kg, moves along the positive x axis with a ...
Thursday, November 8, 2007 at 12:54am by Anonymous

Physics
OK. Lets walk thru one. Consider the force on charge A. It has two components, which are vectors. The force on A from C is kQaQc/distance^2, along the direction from C to A. The force on A from B is kQbQa/distance^2, along the direction from B to A so you can calculate those ...
Sunday, August 19, 2012 at 12:30pm by bobpursley

Physics
An electron moving along the positive x axis perpendicular to a magnetic field experiences a magnetic direction in the negative y direction. What is the direction of the magnetic field?
Wednesday, April 2, 2008 at 12:46am by Jessica

physics
When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure P8.16a. The total gravitational force on the body, Fg, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown ...
Saturday, October 23, 2010 at 3:07pm by rabhimself

Pre Calc
| * * | * *------+------* * | | | * * | | | * | | | * | | | * | | | | | | - * - -+------+------+- - * - | I found this picture online and this is the picture my teacher gave. Can we please start from the beginning. Here is the question again: A rectangle is inscribed between ...
Monday, October 5, 2009 at 9:01pm by MUFFY

calculus
a particle moves along the y axis so that its position at any time t, for 0 is less than or equal to t which is less than or equal to 5, is given by y(t)=t^4-18t^2. in which intervals is the particle speeding up?
Tuesday, January 18, 2011 at 4:30pm by kriti

physics
What are the magnitude and direction of the particle’s acceleration? If a particle is moving along an x axis with a constant acceleration. Some points on the graph are (0, -2), (1,0), (2,6). I got 6 m/s to the right. is this correct? << got 6 m/s to the right. is this ...
Sunday, September 17, 2006 at 2:29pm by ben

Physics
A net external force acts on a particle. This net force is not zero. Is this sufficient information to conclude that (a) the velocity of the particle change, (b) the kinetic energy of the particle changesm and (c) the speed of the particle changes? Give your reasoning in each ...
Thursday, April 24, 2008 at 1:57am by Shante

Pre-Calculus
I don't see any "figure below" , but I can surmise your figure shows a quarter circle in the first quadrant with a rectangle, whose base is along the x-axis, its height along the y-axis and it touches the quarter circle at (x,y) Area = xy = x√(36-x^2) or x(36-x^2)^(1/2) ...
Sunday, October 2, 2011 at 8:43pm by Reiny

physics
1.Give examples of a one-dimensional motion where (a) the particle moving along positive x-direction comes to rest periodically and moves forward. (b) the particle moving along positive x-direction comes to rest periodically and moves backward. 2.Give example of a motion where...
Sunday, October 14, 2012 at 8:56am by help me out it's urgent

Physics
A rotational axis is directed perpendicular to the plane of a square and is located as shown in the drawing. Two forces, 1 and 2, are applied to diagonally opposite corners, and act along the sides of the square, first as shown in part a and then as shown in part b of the ...
Thursday, November 15, 2012 at 12:51am by Elizabeth

college physics
A proton moving in a magnetic field experiences a magnetic force of 17 N at 26o at one instant in time. At the same instant in time, an electron moving with the same speed experiences the same magnetic field. Compare the magnetic force experienced by the electron to that of ...
Friday, April 16, 2010 at 8:59am by Randle

Dynamics
The acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of porpotionality being k. The body starts from the position s = x0 ^i with initial speed v0. Determine the velocity of the particle as a function of time t. ...
Tuesday, January 22, 2013 at 8:08am by Devin

Calculus
Solve: The posistion of a particle moving along a coordinate line is s=sqrt(5+4t), with s in meters and t in seconds. Find the particle's velocity at t=1 sec. A) 2/3 m/sec B) 4/3 m/sec C) -1/3 m/sec D) 1/6 m/sec Thank you!
Sunday, December 30, 2012 at 6:42am by Isha

Calculus
An ant moves along the x-axis with velocity given by v(t)=tsin(t^2), t is greater than or equal to zero. Given that x(t) is the position of the particle at time t and that x(0)=3, find x(2) Find the total distance traveled by the particle from t=0 to t=2
Saturday, February 26, 2011 at 10:25pm by Hannah

Physics
"An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1 250 m/s when it enters a cylindrical tube of radius 0.500 m centered on the x axis. Inside the tube is a uniform electric field of 4.50 X 10^-4 N/C pointing in the negative y direction. How far ...
Monday, February 21, 2011 at 11:06pm by Anonymous

p
A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The force of the wind, though distributed over the tree, is equivalent to a single force F, as shown in the figure. Find the tension in the rope. Assume ...
Monday, March 26, 2012 at 1:25am by JOHN

AP physics
A particle moving uniformly along the x axis is located at 17.9 m at 1.45 s and at 3.9 m at 2.7 s. Find its displacement during this time in- terval. Answer in units of m What is the average velocity speed during this time interval. Answer in units of m/s
Sunday, September 30, 2012 at 3:17pm by Laura

Physics
A particle moved along the x axis with a constant acceleration of -85.0 meters per second squared. The initial position of the particle was at the origin and its initial velocity was +325 meters per second. Find the position of the particle at T=4.0 seconds. Please walk ...
Monday, June 11, 2012 at 2:48pm by Jen

physics helpppp
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a one-dimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then reaches a wall at xw...
Tuesday, March 30, 2010 at 12:15pm by Anonymous

physics
An alpha particle, the nucleus of a helium atom, is at rest at the origin of a Cartesian coordinate system. A proton is moving with a velocity of v towards the alpha particle from the positive x axis direction. If the proton is initially far enough away to have no potential ...
Monday, September 29, 2008 at 1:15am by alexis

Physics
A charged particle with mass m, charge |q|=6.4 ×10−19C and speed v=3 ×106 m/s enters from the bottom of the figure and traces out the trajectory shown in the fields shown. The only electric field E=5 ×103 V/m is in the region where the trajectory of the charge is a ...
Saturday, April 27, 2013 at 4:38pm by tanvir ali

The following table gives the velocity v(t) (in feet per sec) at different instances of time t (in sec) of a particle moving along a horizontal axis. t 0 4 8 12 16 20 v(t) 43 42 40 35 25 5 Estimate the distance traveled by the particle between t = 0 sec and t = 20 sec using 5 ...
Monday, April 1, 2013 at 10:54pm by Marto

Physics
A beam of unknow charged particles passes at right angles to the direction of magnetic field of 9.0 x 10^-2 T. if the speed of the particles is 3.0 x 10^4 m/s and the force experiences by a particle is 8.64 x 10^-16 N. How many electric charges are carried by one particle?
Wednesday, June 4, 2008 at 5:49pm by BAdams

Physics
Find the position and velocity of a particle at t=1.94 s if the particle is initially moving east at a speed of 19.8 m/s and experiences an acceleration of magnitude 4.08 m/s^2, directed west. Magnitude and direction of the position. magnitude- direction- East of its original ...
Sunday, January 16, 2011 at 7:16pm by Christopher

Math: Calculus
The velocity function is v(t)= t^2-5t+ 4 for a particle moving along a line. The position function s(t) is an antiderivative of the velocity function. Find the displacement, s(6) - s(-3), by the particle during the time interval [-3,6].
Thursday, November 11, 2010 at 2:42pm by REALLY NEED HELP!!!!

Calculus
A particle moves along the x-axis with the velocity given by v(t)=3t/(1+t^2) for t >or equal to 0. When t=0, the particle is at the point (4,0). 1. Determine the maximum velocity for the particle. Justify your answer. 2. Determine the position of the particle at any time t...
Wednesday, December 19, 2012 at 10:30am by Madeline

PHYSICS
The only force acting on a particle is conservative force F. If the particle is at point A, the potential energy of the system associated with F and the particle is 39 J. If the particle moves from point A to point B, the work done on the particle by F is +25 J. What is the ...
Wednesday, April 17, 2013 at 7:29pm by Sara

Calculus
A particle, initially at rest, moves along the x-axis such that its acceleration at time t>0 is given by a(t)=cos(t). At the time t=0, its position is x=3. How do I find the position function for the particle? I tried integrating the equation but got confused.
Monday, October 17, 2011 at 8:25pm by Anonymous

Physics
Two boxes on a horizontal surface, as shown in the figure above, are moving together under the influence of a horizontal force, F. The coefficient of kinetic friction between the boxes and the surface is 0.40. Use g = 10 m/s2. In case (a), a horizontal force F directed right ...
Monday, October 10, 2011 at 11:28am by Jeanne

calculus
the base of a solid is the region between the curve y=2 square root of sin x and the interval [0,pi] on the x-axis. the cross-sections perpendicular to the x-axis are equilateral triangles with bases running from the x-axis to the curve as shown in the accompanying figure.
Saturday, February 25, 2012 at 4:17pm by diny

physics
If the problem that you meant to ask is: <<A particle moves along half the circumference of a circle of 1 meter radius. Calculate the work done if the force at any point is inclined at 60 degrees to the tangent at that point, and has 5 Newtons magnitude.>> If that ...
Tuesday, July 10, 2012 at 2:41am by drwls

math
For 4.95 seconds , a particle moves in a straight line according to the position function: s(t) = e^t(5-t)-5 . a. when id the particle at rest ? when is particle moving forward ? b. Find the total distance traveled by the particle in intervals [0,1] seconds and [1,2] seconds...
Thursday, November 7, 2013 at 3:04am by Anonymous

math
For 4.95 seconds , a particle moves in a straight line according to the position function: s(t) = e^t(5-t)-5 . a. when id the particle at rest ? when is particle moving forward ? b. Find the total distance traveled by the particle in intervals [0,1] seconds and [1,2] seconds...
Thursday, November 7, 2013 at 3:04am by Anonymous

physics
A steroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5e4kg and the force causes the speed to change from 7100 to 5500m/s. (A) What is the work done by the force? (B) If the asteroid slows...
Sunday, February 26, 2012 at 9:06pm by Natasha

physics
Consider a position-time graph. The position is to be graphed 1. along the horizontal axis. 2. along either axis you choose. 3. along the vertical axis.
Tuesday, September 4, 2012 at 11:13pm by argelia

multiple choices
An object moving along a curve experiences centripetal acceleration.
Saturday, November 6, 2010 at 4:02am by Damon

physics
A figure or better description is needed. Where are A and B? If the axis is horizontal, "up and down" and "along the axis" are contradictory.
Monday, November 21, 2011 at 10:04pm by drwls

Physics
In the figure, charge = 2.1 × is placed at the origin and charge is placed on the -axis, at = -0.20 m. Where along the -axis can a third charge be placed such that the resultant force on this third charge is zero? Express your answer using two significant figures.
Friday, February 19, 2010 at 10:40pm by Anonymous

college
A 5.1 kg object initially at rest at the origin is subjected to the time-varying force shown in Figure P5.25, with the vertical axis in 4 N increments. What is the object's velocity at t = 6 s?
Monday, December 6, 2010 at 10:36am by samuel

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