Thursday

April 24, 2014

April 24, 2014

Number of results: 1,795

**Maths**

A particle rotates in a circular orbit about a point located 30cm away, with angular speed 2 rad s^-1. If the angular momentum is 0.2 Js, determine the mass of the particle. I used L=mr^2 omega and got 1.11kg A constant torque of 0.2Nm accelerates the particle for 5s. ...
*Monday, February 2, 2009 at 9:23am by Alice*

**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*

**Physics**

A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...
*Tuesday, November 30, 2010 at 4:25pm by Greg*

**physics- MC QUESTION!**

Question: A particle is initially traveling to the right when it hits a wall and turns around to the left. The momentum after the collision is less than the initial momentum. a-the impulse on the particle is to the right b-the impulse on the particle is to the left c-there is ...
*Wednesday, May 30, 2012 at 2:26am by katie*

**Calc**

a partial moves along the x-axis so that its velocity at time t, for 0< = t = < 6, is given by a differentiable function v whose graph is shown above. The velocity is 0 at t=0, t=5, and the graph has horizontal tangents at t=4. the areas of the regions bounded by the t-...
*Monday, May 19, 2008 at 11:55pm by sammy*

**help math**

a partial moves along the x-axis so that its velocity at time t, for 0< = t = < 6, is given by a differentiable function v whose graph is shown above. The velocity is 0 at t=0, t=5, and the graph has horizontal tangents at t=4. the areas of the regions bounded by the t-...
*Tuesday, May 20, 2008 at 10:44pm by dave*

**physics**

The speed -time graph of a particle moving along a fixed direction is shown below.obtain the distance travelled by the particle between t=0 and t=10 s.what is the average speed of the particle over this interval?
*Saturday, October 23, 2010 at 6:15am by soya.*

**Mathematics**

a particle moves in a straight line such that its position x from a fixed point 0 at time 't' is given by x= 5 + 8sin2t + 6cos2t 1. Find the period and amplitude of the particle. 2. Find the greatest speed of the particle. Thanks
*Saturday, October 20, 2012 at 5:37am by Candice*

**AP Calculus**

The position of a particle moving on the x-axis at time t>0 seconds is: x(t)= e^t - t^1/2. a) Find the average velocity of hte particel over the interval [1,3]. b) In what direction and how fast is the particle moving at t= 1 seconds? c) For what values of t is the particle...
*Sunday, April 12, 2009 at 7:41pm by some kid*

**Physics**

Particle 1 of mass 240 g and speed 3.20 m/s undergoes a one-dimensional collision with stationary particle 2 of mass 400 g. (a) What is the magnitude of the impulse on particle 1 if the collision is elastic? _____kg·m/s (b) What is the magnitude of the impulse on particle 1 if...
*Wednesday, November 18, 2009 at 12:32pm by Karen*

**Physics help**

A particle moving along the y-axis has the potential eneryg function U = 6 * y3 J where y is in m. What is the y-component of the force on the particle at 0 m? What is the y-component of the force on the particle at 9 m? What is the y-component of the force on the particle at ...
*Wednesday, November 9, 2011 at 9:45pm by Me*

**physics**

. A 2.0 kg particle is moving along the x axis to the left with a velocity of v= -6.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle at t=4.0 s. Please ...
*Sunday, November 22, 2009 at 9:29pm by Maggie*

**calculus**

A particle is moving along the curve y=4((3x+1)^.5). As the particle passes through the point (5,16) its -coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Tuesday, October 26, 2010 at 5:11pm by sja*

**Calculus**

A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Sunday, November 4, 2012 at 8:28pm by Anonymous*

**Calculus**

A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Sunday, November 4, 2012 at 8:29pm by Anonymous*

**Calculus**

A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Sunday, November 4, 2012 at 8:32pm 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**

A particle has an acceleration of +6.24 m/s2 for 0.300 s. At the end of this time the particle's velocity is +9.81 m/s. What was the particle's initial velocity?
*Wednesday, October 3, 2012 at 2:10pm by Anonymous*

**college physics**

In the figure below, two point particles are fixed on an x axis separated by a distance d. Particle A has mass mA and particle B has mass 2.00mA. A third particle C, of mass 90.0mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x ...
*Sunday, October 11, 2009 at 11:12pm by Jeff*

**Calc**

A particle is moving along the curve y= 3 \sqrt{3 x + 4}. As the particle passes through the point (4, 12), its x-coordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Sunday, March 15, 2009 at 9:57pm by Trey*

**help with physics please!**

2.50 kg particle (the function U(x) has the form bx2 and the vertical axis scale is set by Us = 2.0 J).(a) If the particle passes through the equilibrium position with a velocity of 55.0 cm/s, will it be turned back before it reaches x = 18.0 cm?(b) If yes, at what position (...
*Thursday, June 18, 2009 at 8:53am by jane*

**calculus**

A particle is moving along the curve y= 3sqrt3x+1. As the particle passes through the point (5,12), its x-coordinate increases at a rate of 3 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Thursday, October 29, 2009 at 6:56pm by bre*

**Calculus 1**

A particle is moving along the curve y= 4 \sqrt{3 x + 1}. As the particle passes through the point (1, 8), its x-coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Thursday, March 25, 2010 at 3:43pm by Anonymous*

**Calculus **

A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Monday, October 18, 2010 at 4:10pm by Jack*

**Calculus **

A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Monday, October 18, 2010 at 4:11pm by Jack*

**Calculus**

A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Tuesday, October 26, 2010 at 2:45pm by Carl*

**DIFF. CALCULUS**

A particle is moving along the parabola 4y = (x + 2)^2 in such a way that its x-coordinate is increasing at a constant rate of 2 units per second. How fast is the particle's distance to the point (-2, 0) changing at the moment that the particle is at the point (2, 4)?
*Thursday, November 18, 2010 at 8:43am by KAREEN*

**calculus**

A particle is moving along the curve y=5sqrt(3x+1). As the particle passes through the point (5,20) its x-coordinate increases at a rate of 3 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Wednesday, October 5, 2011 at 12:38am by =/*

**Maths**

A particle is moving along the curve y=4sqrt(4x+1) . As the particle passes through the point (2,12), its x-coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant. Thanks !!!
*Tuesday, November 29, 2011 at 7:07pm by S.P*

**Calculus HELP **

A particle is moving along the curve y=5 sqrt (2x+6). As the particle passes through the point (5,20 , its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Sunday, July 28, 2013 at 6:47pm by Anonymous*

**Calc**

A particle is moving along the curve y= 4 sqrt{2 x + 2}. As the particle passes through the point (1, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
*Monday, April 21, 2014 at 7:26pm by Lucy*

**Physics 30**

A particle accelerated by a potential difference enters a velocity selector. The particle travels staright when the magnetic field is 0.400 T and the electric field is 6.30 x 10^5 V/m. Once the electric field is turned off, a sensor determines that the radius or the particle's...
*Sunday, May 23, 2010 at 12:18am by Farah*

**Physics **

A particle with specific charge α:=q/m=10e8 C/kg enters a bubble chamber where its path can be observed. A magnetic field of induction B=10e−2 T is perpendicular to the particle's velocity. The particle experiences a viscous drag force which is approximately ...
*Saturday, December 21, 2013 at 1:51pm by grock*

**physics! please help!! **

A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m ( I know this ...
*Thursday, December 6, 2012 at 10:45pm by michelle*

**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**

A 10 g particle undergoes Simple Harmonic Motion with an amplitude of 2.0 mm, a maximum acceleration of magnitude 8.0 X 10^3 m/s^2, and an unknown phase constant, theta. What are a.) the period of the motion, b.) the maximum speed of the particle, and c.) the total mechanical ...
*Tuesday, November 30, 2010 at 3:17pm by Scott*

**Physics**

Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of the disk. The final ...
*Sunday, February 14, 2010 at 1:08pm by Sandra*

**PHYSICS**

Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of the disk. The final ...
*Monday, February 22, 2010 at 6:32pm by Alex*

**Physics**

I'm having trouble relating Work, with Electric Field, with Kinematics. The question is asking: How fast and what direction is the particle moving, given: Disk: radius = 0.1m, surface charge density = 3.7mC/m2 Particle: 4.5 mC, mass = 75 mg accelerates from a point ...
*Sunday, February 14, 2010 at 12:54am by so CONFUSED!*

**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**

A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m ( I know this ...
*Thursday, December 6, 2012 at 9:05pm by michelle*

**Physics**

Particle A has twice the mass of particle B, and carries three times the charge of B charge. Both particles are sent perpendicularly through a uniform magnetic field, each with the same kinetic energy. What is the ratio of the radius of evolution of particle A to that of B
*Saturday, May 23, 2009 at 1:58am by Sandhya*

**Physics**

potential energy well for a 2.0 kg particle (the function U(x) has the form bx2 and the vertical axis scale is set by us = 2.0 J). (a) If the particle passes through the equilibrium position with a velocity of 85 cm/s, will it be turned back before it reaches x = 15 cm? (b) If...
*Friday, February 1, 2013 at 4:23am by Akshay*

**physics**

A spring of negligible mass stretches 2.20 cm from its relaxed length when a force of 10.5 N is applied. A 1.1 kg particle rests on a frictionless horizontal surface and is attached to the free end of the spring. The particle is displaced from the origin to x=5. cm and ...
*Monday, November 26, 2012 at 6:16pm by Anonymous*

**foundation of mechanics**

A particle is released from rest at a point P on an inclined plane. The inclination of the plane is tan"1 (4/3) to the horizontal. If the coefficient of friction between the particle and the plane is 1/3, find i) the speed of the particle when it passes Q, where the distance ...
*Tuesday, December 27, 2011 at 12:10pm by khairul*

**physics-help please........**

The momentum and the kinetic energy of particle A is eight times and nine times the momentum and the kinetic energy of particle B, respectively. What is the ratio of the mass of particle A to that of particle B?
*Sunday, October 30, 2011 at 12:03am by lost*

**physics 30**

A charged particle with mass m, and a charge q, is moving through a perpendicular magnetic field of strength B at a velocity,v. The particle is deflected through a curved path with a radius of 15.0 cm. If the speed of the same particle is doubled and the magnetic field is ...
*Wednesday, March 21, 2012 at 12:31am by sarah*

**Physics/Math**

A force F = (4.0 N)i + cj acts on a particle as the particle goes through displacement d = (3.4 m)i - (2.0 m)j. (Other forces also act on the particle.) What is the value of c if the work done on the particle by force F is each of the following? (a) zero (b) 19 J (c) -17 J ...
*Thursday, March 1, 2007 at 12:05am by Technoboi11*

**physics**

A 14 N force with a fixed orientation does work on a particle as the particle moves through displacement d = (2i - 4j + 3k) m. What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +7.54 J and (b) -7.54 J?
*Monday, October 18, 2010 at 10:51am by Sam*

**Physics Diploma**

the intensity and direction of the electric field produced by an alpha particle at a distance of 5.0 x10^-11m from the particle is [1.2x10^12 N/C away from the alpha particle] how do you get the direction? thanks
*Tuesday, June 26, 2012 at 2:57pm by Anonymous*

**physics**

A 13 N force with a fixed orientation does work on a particle as the particle moves through displacement . What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +9.19 J and (b) -9.19 J?
*Wednesday, October 17, 2012 at 4:19pm by Science*

**physics**

A particle with a mass of 3.00 10-20 kg is oscillating with simple harmonic motion with a period of 7.00 10-5 s and a maximum speed of 4.50 103 m/s. (a) Calculate the angular frequency of the particle. rad/s (b) Calculate the maximum displacement of the particle. m
*Monday, November 19, 2012 at 4:24pm by Pipsy*

**physics**

A particle of mass 86 g and charge 24 μC is released from rest when it is 67 cm from a second particle of charge −12 μC. Determine the magnitude of the initial ac- celeration of the 86 g particle.
*Thursday, July 8, 2010 at 6:34pm by tt*

**calculus**

If an equation of motion of a particle is given by s(t)= Acos(ùt + ä), the particle is said to undergo simple harmonic motion. Find the velocity of the particle at time t. When is the velocity 0?
*Tuesday, September 27, 2011 at 12:22am by Belinda*

**Physics**

Particle A of charge 2.76 10-4 C is at the origin, particle B of charge -6.54 10-4 C is at (4.00 m, 0), and particle C of charge 1.02 10-4 C is at (0, 3.00 m). We wish to find the net electric force on C.
*Thursday, April 11, 2013 at 1:59pm by Alex*

**physics**

At t = 0, a particle moving in the xy plane with constant acceleration has a velocity of vi = (3.00 i - 2.00 j) m/s and is at the origin. At t = 2.00 s, the particle's velocity is v = (6.60 i + 4.00 j) m/s. Find the acceleration of the particle at any time t. (Use t, i, and j ...
*Saturday, November 1, 2008 at 9:36pm by nick*

**PHYSICSS!!!!!**

At t = 0, a particle moving in the xy plane with constant acceleration has a velocity of vi = (3.00 i - 2.00 j) m/s and is at the origin. At t = 2.00 s, the particle's velocity is v = (6.60 i + 4.00 j) m/s. Find the acceleration of the particle at any time t. (Use t, i, and j ...
*Tuesday, November 4, 2008 at 1:10am by jacky*

**physics**

A 4.0 kg particle is moving along the x axis to the left with a velocity of v= -12.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle at t=4.0 s. Can I ...
*Saturday, November 21, 2009 at 12:32pm by maggie*

**conceptual physics problem**

A particle is oscillating in simple harmonic motion. The time required for the particle to travel through one complete cycle is equal to the period of the motion, no matter what the amplitude is. But how can this be, since larger amplitudes mean that the particle travels farther?
*Tuesday, November 11, 2008 at 10:27pm by Miss.Seena*

**Physics**

A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...
*Tuesday, November 30, 2010 at 10:07pm by Greg*

**physics (non-calc)**

A particle of charge 2.5x10(^-6)C is moving at 1000 m/sec in a direction 30 degrees North of east. At the location of the particle the magnetic field has size 0.2 T. The particle is experiencing an instantaneous magnetic force (due to this sheild) of 1.71x10(^-4) newtons ...
*Tuesday, June 7, 2011 at 1:46pm by phil*

**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*

**Physics**

8. In an ultracentrifuge a solution is rotated with an angular speed of 3000 rev/sec at a radius of 10 cm. How large is the centripetal acceleration of each particle in the solution? Compare the centripetal force needed to hold a particle of mass 10-5 gm with the weight of the...
*Monday, November 28, 2011 at 1:55pm by Pakilina*

**physics**

The velocity graph of a particle moving along the x-axis is shown. The particle has zero velocity at t=0.00 s and reaches a maximum velocity, vmax, after a total elapsed time, ttotal. If the initial position of the particle is x0=7.28 m, the maximum velocity of the particle is...
*Tuesday, January 25, 2011 at 11:53pm by Markus*

**physics**

One dimension. In Fig. 13-32, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 4.00 mA. A third particle C, of mass 80.0 mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at ...
*Tuesday, December 6, 2011 at 9:26pm by Dan*

**physics**

One dimension. In Fig. 13-32, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 4.00 mA. A third particle C, of mass 80.0 mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at ...
*Tuesday, December 6, 2011 at 9:26pm by Dan*

**AP Physics C**

One dimension. In the figure, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 5.00 mA. A third particle C, of mass 62.0 mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at ...
*Friday, January 24, 2014 at 11:51am by Tabetha*

**physics**

In the figure below, two point particles are fixed on an x axis separated by a distance d. Particle A has mass mA and particle B has mass 4.00mA. A third particle C, of mass 96.0mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x ...
*Wednesday, November 17, 2010 at 4:12pm by Alex*

**physics**

A moving particle encounters an external electric field that decreases its kinetic energy from 9530 eV to 7800 eV as the particle moves from position A to position B. The electric potential at A is -69.0 V, and that at B is +39.0 V. Determine the charge of the particle. ...
*Wednesday, February 1, 2012 at 8:00pm by Mike*

**physics**

A movig particle encounters an external electric field that decreases its kinetic energy from 9670 eV to 7540 eV as the particle moves from position A to position B. The electric potential at A is -66.0 V, and that at B is +16.0 V. Determine the charge of the particle. Include...
*Friday, January 18, 2013 at 9:08pm by help*

**DYNAMICS**

A particle travels along a straight line with a velocity v=(12-3t^2) m/s, when t is in seconds. When t=1s, the particle is located 10m to the left of the origin. Determine the accelaration when t=4s, the displacement from t=0 to t=10s, and the distance the particle travels ...
*Sunday, February 17, 2013 at 9:00pm by HELP*

**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**

U(J) 6 | | 4 | \ | 2 \ ______/ \ / \_____/ 0 1 3 5 7 8 x(cm) Best I could do in drawing a graph!! A 10 g particle has the potential energy shown in the figure above. Part A: How much work does the force do as the particle moves from 2 cm to 6 cm? W = ? J Part B: What speed ...
*Tuesday, December 1, 2009 at 6:01pm by Ashley*

**Physics**

The kinetic energy of a massive particle is equal to the energy of a photon.Â The massive particle moves at 1.49 % the speed of light. Â Â What is the ratio of the photon wavelength to the de Broglie wavelength of the particle?Â (Assume the standard nonrelativistic ...
*Monday, December 3, 2012 at 12:43pm by Alphonse*

**Math**

A particle A of mass 2.11 kg collides with another particle B of mass 3.86 kg. Their initial velocities are u1 = 2.16i + 0.88j and u2 = 0.7i + 1.12j just before impact. After collision, they both merged and becomes a composite particle, which travel with a velocity of V. ...
*Monday, September 3, 2012 at 11:26am by Darren*

**Calculus III**

A particle is moving in R2 according to the law x=t^2, y=t^3 (time is measured in seconds, coordinates in meters). (a) What is the average velocity of the particle over the time interval [1,1.1]? (b) What is the instantaneous velocity of the particle at time t=1?
*Tuesday, October 12, 2010 at 5:04pm by Haley*

**Physics 1**

The drawing shows three particles far away from any other objects and located on a straight line. Particle B is located in the middle of particles A and C. The distance between particles A and B is 0.500 m. The distance between particles B and C is 0.250 m. The masses of these...
*Wednesday, February 19, 2014 at 3:25am by Erica*

**Calculus**

At time t >or= to 0, the position of a particle moving along the x-axis is given by x(t)= (t^3/3)+2t+2. For what value of t in the interval [0,3] will the instantaneous velocity of the particle equal the average velocity of the particle from time t=0 to time t=3?
*Sunday, November 13, 2011 at 9:38pm by Millie*

**Calculus**

The displacement (in meters) of a particle moving in a straight line is given by s=2t^3 where is measured in seconds. Find the average velocity of the particle over the time interval [10,13]. the average velocity is 798 What is the instantaneous velocity of the particle when t...
*Friday, January 25, 2013 at 4:40pm by Anonymous*

**Physics**

The frequency of circular motion for a charged particle moving around in the presence of a uniform magnetic field does not depend on ... The radius of the circle The mass of the particle The charge of the particle The magnitude of the magnetic field Actually, it depends on all...
*Monday, March 15, 2010 at 1:53pm by mm.*

**maths urgent please**

a particle moves in a straight line such that its position x from a fixed point 0 at time 't' is given by x= 5 + 8sin2t + 6cos2t 1. Find the period and amplitude of the particle. 2. Find the greatest speed of the particle. Could you please explain the steps on how to get to ...
*Monday, October 22, 2012 at 9:28am by Candice*

**Physics**

Question: particle J with zero initial mass and X energy accelerates from a static start to 'C' (light speed) in a time frame of N and mass increases 10 to the 28th power per nanosecond- -What is the mass on particle J? -What is the energy of particle J?
*Wednesday, January 16, 2013 at 6:41pm by Dan*

**physics**

A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.19 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B ...
*Tuesday, January 17, 2012 at 10:38pm by Taylor*

**physics**

A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.19 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B ...
*Tuesday, January 17, 2012 at 10:39pm by Taylor*

**physic 1**

The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 347 kg, mB = 575 kg, and mC = 117 kg. Take the positive direction to be to the right. Find the net gravitational force, including sign, ...
*Thursday, February 13, 2014 at 10:48pm by Anonymous*

**physics 1**

The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 347 kg, mB = 575 kg, and mC = 117 kg. Take the positive direction to be to the right. Find the net gravitational force, including sign, ...
*Tuesday, February 18, 2014 at 12:11pm by Anonymous*

**math**

a particle starts at time t = 0 and moves along the x - axis so that its position at any time t is greater than or equal to zero is given x(t) = (t-1)^3(2t-3) A. Find the velocity of the particle at any time t greater than or equal to 0. B. For what values of t is the velocity...
*Thursday, November 15, 2012 at 12:00am by Joe*

**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*

**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 (Algerbra-based)**

A particle is moving clockwise around a circle with a radius 3.31 m. The magnitude of the total acceleration of the particle at the given instant is 14.3 m/s^2; the angle between the vector of total acceleration and the radius-vector of the particle is 30◦. Find the ...
*Thursday, March 14, 2013 at 3:56pm by Becky*

**Physics**

The frequency of circular motion for a charged particle moving around in the presence of a uniform magnetic field does not depend on ... a)The radius of the circle b)The mass of the particle c) The charge of the particle d) The magnitude of the magnetic field e) Actually, it ...
*Saturday, March 13, 2010 at 5:49pm by Johnny*

**Physics**

A particle with a charge of -4.50x 10^-10 C and a mass of 6.6x 10^-18 kg is placed between two oppositely charged parallel plates with a voltage of 9.00x 10^5 V. The particle is injected at the negative plate with an initial speed of zero. What is the final speed of the ...
*Thursday, April 5, 2012 at 1:37pm by Marie*

**physics**

A particle leaves the origin with an initial velocity v=(2.40 m/s)x hat and moves with a constant acceleration a=(-1.90 m/s ^2)x hat+(3.20 m/s ^2)y hat. How far does the particle move in the x direction before turning around? Answer is 1.48 m. What is the particle's velocity ...
*Tuesday, September 14, 2010 at 8:46pm by Ka *

**Physics**

a charged particle is in point (2, 3, 8) and has a charge Q1 = 5x10-10C. Another particle is at (5,7,0) and has a charge Q2 = 3x10-10C. Calculate how much work needed to move the first particle to the point (0, -7.2) using the electric field
*Saturday, May 12, 2012 at 6:20am by Filip*

**Please help with Calculus problem??**

A particle moves with a fixed acceleration 3 m/s^2. If its initial velocity is s(0)=0: a) Find its velocity function. b) How long does it take for the particle to reach the velocity 14 m/s^2? c) Find the distance the particle traveled when its velocity reaches 14 m/s^2.
*Wednesday, July 10, 2013 at 9:39am by Robin*

**Physics**

A pendulum consist of a particle P of mass m, attached to one end of a model string of length l=2.85m. The other end of the string is attached to a fixed point O and the particle moves in a vertical circle about the fixed point. The angle made by the string with the vertical ...
*Friday, April 27, 2012 at 10:45am by Anonymous*

**Calculus**

The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 5/t2, where t is measured in seconds. Find the velocity of the particle at times t = a, t = 1, t = 2, and t = 3. (a) Find the average velocity during each time period. (...
*Friday, September 21, 2012 at 9:34pm by Roscoe*

**Physics**

A single conservative force F(x) acts on a 1.6 kg particle that moves along an x axis. The potential energy U(x) associated with F(x) is given by U(x) = -2.9xe-x/3 where x is in meters. At x = 3.4 m the particle has a kinetic energy of 7.2 J. (a) What is the mechanical energy ...
*Monday, March 7, 2011 at 11:30pm by Aaron*

**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**

A dust particle carrying a charge of is 2 mm to the left of another dust particle carrying a charge of . Find the magnitude and direction of the elec- tric force on the first particle.
*Wednesday, March 5, 2014 at 5:38pm by Shelly*

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