Search: A 10 {\rm g} particle has the potential energy shown in the figure .How much work does the force do as the particle moves from x=2\;{\rm cm} to x=6\;{\rm cm}?

Number of results: 63,570

physics
A typical photovoltaic cell delivers 3.8×10−3 {\rm W} of electric energy when illuminated with 0.14 {\rm W} of light energy. what is the energy efficiency of the cell?
Sunday, January 8, 2012 at 7:50pm by please help

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

chem
A student placed 13.5g of glucose (\rm C_6H_{12}O_6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. \rm mL mark on the neck of the flask was reached. The flask was then shaken until the ...
Friday, February 15, 2013 at 9:44am by Anonymous

physics help!
The equation of motion of a particle in vertical SHM is given by y = (17 cm) sin 0.70t. (a) What is the particle's displacement at t = 1.1 s? (b) What is the particle's velocity at t = 1.1 s?(c) What is the particle's acceleration at t = 1.1 s?
Wednesday, April 13, 2011 at 4:43pm by anonymous

physics
An elastic cord is 69 {\rm cm} long when a weight of 79 {\rm N} hangs from it but is 90 {\rm cm} long when a weight of 170 {\rm N} hangs from it.What is the "spring" constant k of this elastic cord?
Friday, April 29, 2011 at 7:41pm by c

Physics
A skier is gliding along at 5.0{\rm m/s} on horizontal, frictionless snow. He suddenly starts down a 15{\rm ^{\circ}} incline. His speed at the bottom is 15{\rm m/s} . What is the length of the incline? How long does it take him to reach the bottom?
Monday, October 15, 2012 at 2:47pm by Denika

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
I'm going to make the assumption that this is in vector unit notation and that this is a two dimensional problem. If particle P is moving 2.0m/s(i) + 4m/s(j) with respect to particle A then particle A should appear to be moving -2.0m/s(i) - 4.0m/s(j). This can be imagined ...
Saturday, October 6, 2012 at 3:20pm by Andrew Blakely

math
A particle is traveling along a one-dimensional path (such as a number line). The position of the particle is governed by the time function x(t) ƒ 3t 4 ƒ{16t3 ƒy18t 2 ƒy 2 , where t is in minutes and 0 „T t „T 5 . Answer the following ...
Saturday, March 12, 2011 at 12:52am by feysal

physics
A particle has a charge of +2.2 μC and moves from point A to point B, a distance of 0.16 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...
Wednesday, January 30, 2013 at 8:10pm by mageda

physics
A small particle has charge -4.20 and mass 1.10×10−4 . It moves from point , where the electric potential is = 250 , to point , where the electric potential = 740 is greater than the potential at point . The electric force is the only force acting on the ...
Wednesday, September 12, 2012 at 11:37pm by Anonymous

physics
You are trying to overhear a juicy conversation, but from your distance of 25.0{\rm m} , it sounds like only an average whisper of 25.0{\rm dB} . So you decide to move closer to give the conversation a sound level of 60.0{\rm dB} instead.
Monday, November 26, 2012 at 7:51pm by Anonymous

physics
a) You need to move a test particle across a floor. Given source that has a charge of q = 3e, What is the displacement between the source and the particle if you need the particle to travel 2.5m in t = 2.5s? Note: the source emits this charge only the INSTANT you pull the ...
Monday, July 9, 2012 at 11:52pm by Anonymous

physics
A hot-air balloon plus cargo has a mass of 1740 {\rm kg} and a volume of 12030 {\rm m^3}. The balloon is floating at a constant height of 6.25 {\rm m} above the ground. What is the density of the hot air in the balloon?
Thursday, January 26, 2012 at 5:02pm by Dave

science
the velocity of a particle is given by v=[16t^2i+4t^3j +(5t+2)k]m/s, where t is in seconds. If the particle is at the origin when t=0, determine the magnitude of the particle's acceleration when t=2s. What is the x,y,z coordinate position of the particle at this instant.
Monday, November 3, 2008 at 12:22am by sarah

physics
Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 172 \rm Hz. You are 8.00 \rm m from speaker A. Take the speed of sound in air to be 344 \rm m/s. What is the closest you can be...
Wednesday, November 10, 2010 at 9:02am by sarah

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 ...
Tuesday, December 27, 2011 at 12:10pm by khairul

Physics
A positively charged particle of mass 5.60 10-8 kg is traveling due east with a speed of 60 m/s and enters a 0.49-T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 1.20 10-3 s, at which time it leaves the field heading due south. All ...
Thursday, April 4, 2013 at 8:56pm by Don

physic
A 1.20-{\rm kg} block of wood sits at the edge of a table, 0.720 m above the floor. A 1.20×10−2-{\rm kg} bullet moving horizontally with a speed of 750 m/s embeds itself within the block
Wednesday, October 26, 2011 at 3:06pm by chris

Physics
The velocity of a particle is given by the relation v(t)=(-5.00 x 10⁷)t² = (3.00 x 1065)t. At time t=0, the particle is located at the origin. What is its location after 10 seconds?
Tuesday, January 19, 2010 at 7:01pm by Mandy

Intro T Electrical Engineering
A solid metal sphere with radius 0.430{\rm m} carries a net charge of 0.210{\rm nC} . Find the magnitude of the electric field at a point 0.112{\rm m} outside the surface of the sphere. Find the magnitude of the electric field at a point inside the sphere, 0.112{\rm m} below ...
Tuesday, September 18, 2012 at 3:25pm by Habib. L

misread this one
2. The position function of a particle is given by s=t^3–4t^2–7t t>=0 where s is measured in meters and t in seconds. When does the particle reach a velocity of 10 m/s? ____ =========================== s' = 3 t^2 - 8 t - 7 = 10 3 t^2 - 8 t -17 = 0 t = [ 8...
Sunday, April 27, 2008 at 8:30pm by Damon

college physics
The velocity of a particle is given by the relation v(t)=(-5.00 x 10⁷)t² = (3.00 x 1065)t. At time t=0, the particle is located at the origin. What is its location after 10 seconds?
Tuesday, January 19, 2010 at 8:17pm by Mandy

chemistry
Copper (II) fluoride contains 37.42% {\rm F} by mass. Use this percentage to calculate the mass of fluorine (in {\rm g}) contained in 56.0{\rm g} of copper (II) fluoride
Monday, September 24, 2012 at 10:10pm by Justin

Physics
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 12.0e. Particle 3 of charge q3 = +13.0e is initially on the x axis near particle 2. Then particle 3 is gradually moved in the positive direction ...
Friday, January 20, 2012 at 3:38pm by Phil

Physics
Wm/We = gm/ge = (GMm/rm^2)/(GMe/re^2) or Mm(re^2)/Me(rm^2).
Sunday, December 16, 2007 at 12:26pm by tchrwill

physics
Sam, whose mass is 82 {\rm kg}, takes off across level snow on his jet-powered skis. The skis have a thrust of 240 {\rm N} and a coefficient of kinetic friction on snow of 0.11. Unfortunately, the skis run out of fuel after only 15 {\rm s}.
Tuesday, March 27, 2012 at 6:33pm by Rachel

chemistry
If you have 1.50 moles {\rm H_2}, how many grams of {\rm NH_3} can be produced?
Wednesday, October 19, 2011 at 9:45pm by Anonymous

chemistry
I can't read your post. What is \rm mol and {\rm L}?
Thursday, September 30, 2010 at 9:56pm by DrBob222

physics
Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magnitude of the maximum acceleration is typically 1.3 {\rm m}/{\rm s}^{2}, but the driver will usually maintain a constant acceleration that is less than...
Friday, September 14, 2012 at 2:27pm by kaitlyn

physics
Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 24.0{\rm m}/{\rm s} as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation of...
Saturday, January 26, 2013 at 1:26am by corrina

Calculus
The position of a particle moving on a horizontal line is given by s(t)=2t^3-15t^2+24t-5, where s is measured in feet and t in seconds. a: What is the initial position of the particle? b: What is the average velocity of the particle on the interval [0,2]?Indicate units of ...
Monday, March 4, 2013 at 6:59pm by Raul

calculus
5. A particle moves along the y – axis with velocity given by v(t)=tsine(t^2) for t>=0 . a. In which direction (up or down) is the particle moving at time t = 1.5? Why? b. Find the acceleration of the particle at time t= 1.5. Is the velocity of the particle ...
Sunday, February 26, 2012 at 2:45am by Taeyeon

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
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) ...
Sunday, March 10, 2013 at 3:34pm by Anonymous

physics
I have idea what your symbols 33{\rm ^{\circ}} and -14{\rm m/s} are supposed to mean
Friday, August 17, 2012 at 6:08pm by drwls

physics
A proton (mass=1.67*10^-27 kg) moves with a velocity of 6.00*10^6 m/sec. Upon colliding with a stationary particle of unknown mass, the proton rebounds upon its own path with a velocity of 4.00*10^6 m/sec. The collision sends the unknown particle forward with a velocety of 2....
Sunday, February 20, 2011 at 8:41pm by bird

chemistry
Assuming 1-\rm L flask means 1L flask and 25{\rm^\circ C} means 25 degrees C, then Use PV = nRT to find the partial pressure of Argon. You know n = grams/atomic mass, R, T, and V. Solve for P. Then use Ptotal = Pethane + PAr to solve for Pethane. I have asked repeatedly what \...
Tuesday, January 11, 2011 at 1:59pm by DrBob222

physics
three point particles are fixed in place in an xy plane. Particle A has mass mA = 3 g, particle B has mass 2.00mA, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00mA, is to be placed near the other three particles. What (a) x coordinate and (b) y coordinate ...
Sunday, January 2, 2011 at 5:38pm by Anonymous

Chemistry
The \rm p \it K_{\rm a} of this reaction is 4.2. In a 0.74\it M solution of benzoic acid, what percentage of the molecules are ionized?
Thursday, February 21, 2013 at 7:21pm by Joe

physics
A velocity vector 33{\rm ^{\circ}} below the positive x-axis has a y-component of -14{\rm m/s} .
Friday, August 17, 2012 at 6:08pm by Anonymous

Chemistry
What minimum amount of 1.55 M \rm HCl is necessary to produce 26.5 L of \rm H_2 at STP?
Wednesday, May 16, 2012 at 12:12pm by Tj

PARTICLE PHYSICS
particle A has a mass of 2 and a charge of -1. particle B has a mass of 2 and a charge of +1. are particle A and particle B necessarily antiparticles? explain your answer
Wednesday, June 9, 2010 at 5:52pm by Nick

physics
Particle 1 and particle 2 have masses of m1 = 1.5×10-8 kg and m2 = 6.2×10-8 kg, but they carry the same charge q. The two particles accelerate from rest through the same electric potential difference V and enter the same magnetic field, which has a magnitude B. The...
Wednesday, December 5, 2012 at 4:35pm by Anonymous

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&#...
Sunday, May 23, 2010 at 12:18am by Farah

Calculous
A particle moves along the c-axis so that at time t its position is given by x(t)=t^2-6^t+9t+11 a)What is the velocity of the particle at t=0 b)During what time intervals is the particle moving to the left? c)What is the total distance traveled by the particle t=0 to t=2
Sunday, November 20, 2011 at 2:37pm by Yoona

chemistry
Write a balanced chemical equation for the reaction that occurs when the hydrocarbon styrene, {\rm C}_{8}{\rm H}_{8}(l), is combusted in air.
Tuesday, October 4, 2011 at 10:38pm by seema

chemistry
How many grams of \rm Na_3PO_4 will be needed to produce 450 mL of a solution that has a concentration of \rm Na^+ ions of 1.50 \it M?
Wednesday, September 29, 2010 at 6:45pm by A

Calculus-particle motion
1. A particle is moving on the x-axis (or any number line) Its position x(t), or distance from the origin, at the time t is given by x(t)=4t^3-16t^2+15t. t is greater than or equal to 0 a.) Where is the particle when it is at rest? b.) During what time interval is the particle...
Monday, February 7, 2011 at 6:28pm by Matt

Physics
The winner of the Kentucky Derby runs the 1.25-mile race in 2 minutes, 2.0 s.What's the horse's average speed in {\rm m}/{\rm s}?
Tuesday, August 31, 2010 at 2:00pm by Anonymous

Physics
A 10 g particle is moving to the left at 20 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?
Thursday, February 16, 2012 at 10:00pm by Hayden

physics
Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting container and liquid mixture has a mass of 450 {\rm g}. What volume of alcohol was added to the water?
Sunday, December 4, 2011 at 9:23pm by Anonymous

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
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

physcis ! HELP !!!!
which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's ...
Tuesday, April 10, 2012 at 6:00pm by kelly

physics
which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's ...
Tuesday, April 10, 2012 at 5:33pm by kelly

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

Physic
A 10 kg particle moving along the x-axis experiences the force shown in figure. The particle goes from v=1.0m/s at x=0 and v=5.0 m/s at x=2. What is the f max?
Tuesday, October 30, 2012 at 2:18pm by J

physics
No comprendo \rm m}/{\rm s}
Thursday, February 2, 2012 at 8:05pm by drwls

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...
Tuesday, January 17, 2012 at 10:39pm by Taylor

Physics
A force of magnitude 7.50 {\rm N} pushes three boxes with masses m_1 = 1.30\,{\rm{kg}},m_2 = 3.20\,{\rm{kg}}, and m_3 = 4.90\,{\rm{kg}}, as shown in the figure(Figure 1) . (Ignore friction.) Find the magnitude of the contact force between boxes 1 and 2, and Find the magnitude ...
Saturday, February 16, 2013 at 5:54pm by Adnan

phyics
Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting container and liquid mixture has a mass of 450 {\rm g}. What volume of alcohol was added to the water? Express your answer using two significant figures.
Sunday, December 4, 2011 at 10:08pm by please help

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

calc help
the position function of a particle is given by s=t^3–4t^2–7t t>=0 where s is measured in meters and t in seconds. When does the particle reach a velocity of 10 m/s?
Saturday, April 26, 2008 at 6:16pm by Adam

chmistry
Given that \rm S is the central atom, draw a Lewis structure of \rm OSF_4 in which the formal charges of all atoms are zero.
Tuesday, May 14, 2013 at 8:12pm by Papayu Domu

chemistry
What volume of 2.25\it M \rm HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.200\it M \rm Na_2CO_3?
Sunday, April 7, 2013 at 7:45pm by Lauren

physics
A positively charged particle of mass 5.20 10-8 kg is traveling due east with a speed of 30 m/s and enters a 0.37-T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 4.20 10-3 s, at which time it leaves the field heading due south. All ...
Thursday, April 4, 2013 at 12:33pm by Anonymous

Physics
A sled and rider, gliding over horizontal, frictionless ice at 4.9{\rm m/s} , have a combined mass of 86{\rm kg} . The sled then slides over a rough spot in the ice, slowing down to 2.1{\rm m/s} What impulse was delivered to the sled by the friction force from the rough spot?
Tuesday, November 13, 2012 at 5:19pm by Cassie

physics
A particle is projected vertically upwards with velocity of u.after t seconds particle is projected from some point with same velocity.How long does it take for the second particle to meet the first particle?
Monday, April 22, 2013 at 8:39am by Anonymous

Grade 12 Calculus
A particle is projected vertically upwards with velocity of u.after t seconds particle is projected from some point with same velocity.How long does it take for the second particle to meet the first particle?
Friday, April 19, 2013 at 6:13pm by Anonymous

physics
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's magnetic field at an...
Tuesday, February 8, 2011 at 7:24pm by aml

Calc
A particle moves along the x-axis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3 - 3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is moving to the left. ...
Sunday, January 27, 2013 at 9:38am by Aparna

Physics
Your method looks OK to me. Let the charges be q and 2q. 1.2*10^-9 N = k *2 q^2/ r^2 k = 9.0*10^9 N m^2/C^2 r = 4.0*10^-2 m q^2 = (1/2)(0.04)^2 * 1.2*10^-9/9.0*10^9 = 1.06*10^-22 C^2 q = 1.03*10^-11 C The other particle has twice that charge.
Tuesday, April 14, 2009 at 11:07pm by drwls

earth
About how fast will it be traveling on average? Assume that its trajectory is close to a straight line. Give your answer in {\rm AU/yr} and in {\rm km/hr}.
Tuesday, May 1, 2012 at 3:03am by Kevin

chem
If you used the 8900 kilojoules you expend in energy in one day to heat 46000 {\rm g} of water at 25^\circ {\rm C}, what would be the rise in temperature?
Wednesday, September 14, 2011 at 6:21pm by Anonymous

Physics
A 0.500 kg particle moves in a circle of R=0.0150 m at constant speed. The time for 20 complete revolutions is 31.7 s. What is the period T of the motion? What is the speed of the particle? What is the centripetal acceleration of the particle? What is the centripetal force on ...
Tuesday, March 5, 2013 at 4:59am by Nancy

College Physics
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 4000 N/C and 20 mT,respectively. Find the speed of the particle if it is a proton. v= m/s Find the speed of the particle if it is an alpha particle. (An alpha ...
Friday, February 19, 2010 at 5:57pm by Lanise

D.E
A particle moves on the x-axis with an acceleration, 246msta. Find the position and velocity of the particle at 3t, if the particle is at origin and has a velocity of 10ms when 0t ...
Sunday, November 20, 2011 at 4:21am by Farah

Calculus
A particle travels along the x-axis so that its velocity is given by v(t)=cos3x for 0<(or equal to)t<(or equal to)5. When t=0, the particle is at x=5. a. What is the smallest x-coordinate of the particle? b. What is the total distance traveled? c. At what t is ...
Tuesday, January 10, 2012 at 11:13am by Dalton

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

Physical Science
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 7:47pm by Stephanie

physics
A 2.000-kg particle rests on a frictionless horizontal surface and is attached to the free end of a spring. The particle is pulled horizontally so that it stretches the spring 0.05 m and is then released from rest at t = 0. Determine the displacement, x, of the particle from ...
Wednesday, May 5, 2010 at 9:44pm by lucas

physics
A particle moves along the y axis according to y(t)=(3.5 m/s^2)t^2 - (9.0 m/s)t + 5.0 m. (a) What is the particle's velocity as a function of time? (b) What is the particle's acceleration at t=2.0 s?
Thursday, August 23, 2012 at 9:26pm by mitch

physics
Place particle D where the force due to that particle, upon A, cancels the vector sum of the B and C particle's forces on A.
Sunday, January 2, 2011 at 5:38pm by drwls

physics
An alpha particle (charge = +2.0e) is sent at high speed toward a gold nucleus (charge = +79e). What is the electric force acting on the alpha particle when the alpha particle is 1.7 multiplied by 10-14 m from the gold nucleus? N
Tuesday, April 10, 2012 at 8:01pm by brooke

mechanics
A particle of mass 10 kg is acted on by a resultant force, F newtons. If the position vector of the particle is given by r = 6ti + (4t + 8t2)j, then F is equal toƒª
Sunday, November 11, 2012 at 9:17am by Karabo

calculus
a particle moves along a number line measured in cm so that its position at time t sec is given by s=72/(t+2) +k, k is a constant and t>=0 seconds. (a) Find the instantaneous velocity of the particle at t=4 seconds (b) Find the acceleration of the particle when t =4 ...
Friday, February 4, 2011 at 1:05pm by nadra

physics
A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.690 g, q = 4.75 µC) is located on the x axis at x = 20.0 cm, moving with a speed of 50.0 m/s in the positive y direction. For what value of Q will the moving particle ...
Thursday, February 11, 2010 at 8:41am by Sandhya

physics
A 820-{\rm kg} sports car collides into the rear end of a 2700-{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 {\rm m} before stopping. The police officer, estimating the coefficient of kinetic friction between ...
Monday, February 20, 2012 at 9:10pm by Ben

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