A pi meson of mass m moves with a speed u in the positive y direction in frame S with parameters BETA = u/c and GAMMA = 1/[sqrt(1  BETA^2)]. The pion decays into two gamma rays. An observer S'
72,794 results
uniten
3. At t = 0 , a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with constant accelaration of ( 2.0i  4.0j ) m/s2 . At the instant the x coordinate of the particle is 15 m , what is the speed of

physics
A student holds one end of a string in a fixed position. A ball of mass .2 kg attached to the other end of the string moves in a horizontal circle of radius .5m with a constant speed of 5m/s. How much work is done on the ball by the string during each

physics
A softball of mass 0.220 kg that is moving with a speed of 6.5 m/s (in the positive direction) collides headon and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 4.8 m/s.

Physics
Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 16.3 kg · m/s and points in a direction 71.5° above the positive xaxis. Object m1 is moving in the x direction with a speed of v1 =

Physics
A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after the impact, a 200g piece moves along the xaxis with a speed of 2.00m/s and a 235g piece moves along the the y axis with a speed of

Physics
A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 – 2.0 ˆi ˆj ) m/s2. At the instant the particle moves back across the x axis (y = 0), what is the value

physics
At the instant a 2.0kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the twoparticle system?

Science
Which option most accurately describes alternating current? current that moves in one direction throughout a circuit current that moves in one direction until it reaches the battery, then moves in the other direction current that moves in one direction in

Science
A steel ball A of mass 20.0 kg moving with a speed of 2.0 ms−1 collides with another ball B of mass 10.0 kg which is initially at rest. After the collision A moves off with a speed of 1.0 ms−1 at an angle of 30º with its original direction of motion.

Physics
A particle of mass m moving at 5 m/s in the positive x direction makes a glancing elastic collision with a particle of mass 2m that is at rest before the collision. After the collision, m moves off at an angle of 45 degrees to the x axis and 2m moves off

Physics MCAT, Help please
A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece, with mass m1 = 2kg moves in the same direction with speed v1 = 8m/s. Find the velocity of the second piece. Its answer is 2 m/s

Physics
A truck moves 70m east, then moves 120m west, and finally moves east again a distance of 90 m. If east is chosen as the positive direction, what is the trucks resultant displacement?

Physics
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 58.8° and a speed of v1 = 28.4 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum

physics
An object at rest explodes into three pieces of equal mass.One moves east at 20.0 m/s,a second moves southeast at 30.0 m/s. What is the velocity of the third piece? The vector sum of the momenta of the three pieces must be zero, since it was zero to begin

physics
At an instant when a particle of mass 80 g has a velocity of 25 m/s in the positive y direction, a 75g particle has a velocity of 20 m/s in the positive x direction. What is the speed of the center of mass of this twoparticle system at this instant?

college gen. physics II
38. A proton initially moves left to right long the ´‑axis at a speed of 2 ´ 103 m/s. It moves into an electric field, which points in the negative ´ direction, and travels a distance of 0.2 m before coming to rest. If the proton's mass and charge are

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

Pre APscience
A boy of mass 60 kg stands on a boat of mass 250 kg. This system is stationary. From the boat, the boy throws a rock of mass 1 kg into the water with a velocity of 10 m/s. What is the magnitude and direction of the boat's motion as a result of this? A) The

Ap Physics
Ball A,with a mass of 1.75kg,moves with a velocity of 3.50 m/s. It collides with a stationary ball B, with a mass of 2.50kg. After the collision, ball A moves in a direction of 55° to the left of its original direction, while ball B moves in a direction

physic
a golf ball of mass 0.045 kg is moving in the +x direction with a speed of 9.0 m/s, and a baseball of mass 0.145 kg is moving in the y direction with a speed of 7.0 m/s. What are the magnitude and direction if the total momentum of the system consisting

physics
A 5.0 kg object moving in the +x direction at 5.5 m/s collides headon with a 3.1 kg object moving in the x direction at 4.0 m/s. Find the final velocity of each mass for each of the following situations. (Take the positive direction to be +x.) The bodies

physics
A 3.0kg object moving 8.0 m/s in the positive x direction has a onedimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?

Physics
a) A singly charged positive ion with a mass of 6.68*10^27 kg moves clockwise in a circular path of radius 3 cm with a speed of 10000m/s. Find the direction and strength of magnetic field. b) Find the direction and strength of magnetic field if the ion

Physics
Carmen and Judi dock a canoe. 83.0kg Carmen moves forward at 4.3 m/s as she leaves the canoe to step onto the dock. At what speed and in what direction do the canoe and Judi move if their combined mass is 115 kg? (Use a positive number if the canoe moves

Physics
A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.80 s, it is at point (4.40 m, 6.20 m) with velocity (3.70 m/s) and acceleration in the positive x direction. At time t2 = 11.0 s, it has

Physics
An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 25 km/h in the positive x direction before the collision. The Camaro has a mass of 1700 kg and was traveling in the positive y

physics
A ball (mass 12 kg) moving at 15 m/s in the +xdirection collides with a ball (mass 36 kg) moving at 5.0 m/s in the +y direction. After colliding, the 12kg ball moves at 6.0 m/s at an angle of 30°above the +x direction. Afterward, what is the speed and

Physics
an object of mass 3 kg is moving in the positive xdirection with a speed of 10 m/s. A second object of mass 5 kg is moving in the northwest direction with a speed of 8 m/s. If the two stick together after the collision, what is the final velocity

Physics
A particle of mass M moves through the lab at 0.6c. Suddenly it explodes into two fragments. First fragment, with mass 2M/3 , moves at 0.8c in the same direction that the original particle had been moving. Determine the velocity (magnitude and direction)

physics
A stationary billiard ball, mass 0.17 kg, is struck by an identical ball moving at 4.8 m/s. After the collision, the second ball moves off at 60° to the left of its original direction. The stationary ball moves off at 30° to the right of the moving

physics
A magnetic field has a magnitude of 1.20 103 T, and an electric field has a magnitude of 5.50 103 N/C. Both fields point in the same direction. A positive 1.8µC charge moves at a speed of 2.60 106 m/s in a direction that is perpendicular to both fields.

Physics repost
A magnetic field has a magnitude of 1.2 103 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 2.9 106 m/s in a direction that is perpendicular to both fields.

physics
Two cars, one of mass 1300 kg, and the second of mass 2200 kg, are moving at right angles to each other when they collide and stick together. he initial velocity of the first car is 14 m/s in the positive x direction and that of the second car is 18 m/s in

Physics
The bond between protons and neutrons inside the atomic nucleus is formed by the strong interaction. In classical terms, we can think of it as protons and neutrons exchanging a "meson," a kind of fundamental particle between them. Let's estimate the range

Physics
A 2.85 kg stationary package explodes into three parts that then slide across a frictionless floor. The package had been at the origin of a coordinate system. Part 1 has mass m1 = 0.500 kg and velocity (10.0 + 12.0) m/s. Part 2 has mass m2 = 0.750 kg, a

Physics
A satellite with a mass of 284 kg approaches a large planet at a speed vi,1 = 14.4 km/s. The planet is moving at a speed vi,2 = 11.0 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a

Physics
1) A wave with frequency 3.1 Hz and amplitude 2.7 cm moves in the positive xdirection with speed 5.6 m/s. Determine the wavelength. 2) The equation of a wave along the xaxis is given as: ξ cm = 3.4 sin (1.13 x  0.75 t) in which ξ is the displacement.

Physics
Two particles approach each other with equal and opposite speed v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a unitless number. Snapshots of the system before, during, and after the elastic collision are shown

Physics
A magnetic field has a magnitude of 1.2 103 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 2.9 106 m/s in a direction that is perpendicular to both fields.

physics
1.A truck with a mass 5000 kg is heading East at 20 m/s. Meanwhile a car with a mass 2500 kg is heading North at 30 m/s. The two vehicles collide at an intersection, get stuck together, and the wreckage keeps moving to some direction.find the speed of the

Physics
An object has a initial velocity of 10 m/s in the positive x direction. Under a constant acceleration it stops after undergoing a displacement of 148.3 m in the positive x direction. Because it is still under the same acceleration it then travels back in

Physics
An object has a initial velocity of 10 m/s in the positive x direction. Under a constant acceleration it stops after undergoing a displacement of 148.3 m in the positive x direction. Because it is still under the same acceleration it then travels back in

Physics
A particle moving at a velocity of 8 m/s in the positive x direction is given an acceleration of 7.4 m/s2 in the positive y direction for 1.7 s. What is the final speed of the particle? Answer in units of m/s

physcis
a particle moving at a velocity of 6 m/s in the positive x direction is given an acceleration of 3.9m/s^2 in the positive Y direction for 3.4s. what is the final speed of the particle? answer in units of m/s

physics torque i think please help
Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2kg, is traveling along the line y=6.00m at 3.45 m/s in the positive xdirection. Jogger B, with a mass of 62.4kg, is traveling at 4.23 m/s along the line x=3.00m in the

modern physics
A pi meson of mass m moves with a speed u in the positive y direction in frame S with parameters BETA = u/c and GAMMA = 1/[sqrt(1  BETA^2)]. The pion decays into two gamma rays. An observer S' moves in the positive x direction with speed v = BETA'c and

Physics
Particle 1 of mass 3m initially moving with a speed v0 in the positive xdirection collides with particle 2 of mass m moving in the opposite direction with an unknown speed v.After collision,particle 1 moves along the negative ydirection with speed v0/2

physics
A 14 kg body is moving through space in the positive direction of an x axis with a speed of 220 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 6.4 kg, moves away from the point of explosion with a speed of 190

physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.0 ✕ 1027 kg, moves along the positive yaxis with a speed of 9.0 ✕ 106 m/s. Another particle, of mass 7.4 ✕

Physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 1027 kg, moves along the positive yaxis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕

Physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 1027 kg, moves along the positive yaxis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕

Physics
In its own frame the average pi meson lives 2.60 x 10^8s. Suppose it moves at 0.985c relative to the Earth. According to us, on Earth, what is a pi meson's average lifetime? (b) according to us, what is the pi meson;s average travel distance before

physics
A 22.0kg body is moving in the direction of the positive x axis with a speed of 359 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 6.5 kg, moves away from the point of explosion with a speed of 387 m/s along

physics
A 41.0kg 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

Physics
A particle with a charge of 31 µC moves with a speed of 62 m/s in the positive xdirection. The magnetic field in this region of space has a component of 0.50 T in the positive ydirection, and a component of 0.61 T in the positive zdirection. What is

Physics
A particle with a charge of 31 µC moves with a speed of 62 m/s in the positive xdirection. The magnetic field in this region of space has a component of 0.50 T in the positive ydirection, and a component of 0.61 T in the positive zdirection. What is

physics
Two friends, Al and Jo, have a combined mass of 171 kg. At an ice skating rink they stand close together on skates, at rest and facing each other, with a compressed spring between them. The spring is kept from pushing them apart, because they are holding

Physics
A square of side 2L is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C’. The displacement of the x coordinate of the center of mass (from C to C’) is? In the

Science
If a ball A moves at X speed eastwards collideds with a stationary ball B. Ball A now moves at Y speed north east (40 degrees upwards from eastward direction) and ball B moves at W speed south east (50 degrees downwards from eastward direction). To

Science
If a ball A moves at X speed eastwards collideds with a stationary ball B. Ball A now moves at Y speed north east (40 degrees upwards from eastward direction) and ball B moves at W speed south east (50 degrees downwards from eastward direction). To

physics
A tennis ball (mass 57.0 g) moves toward the player's racquet at 46.4 m/s. It is in contact with the racquet for 3.60 ms, after which it moves in the opposite direction at 49.8 m/s. What is the average force on the ball due to the racquet? (Assume the ball

physics
A 1100 kg car collides with a 1500 kg car that was initially at rest at the origin of an xy coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 35 o with respect to the positive x axis. The heavier car moves at

Physics
A 1100 kg car collides with a 1500 kg car that was initially at rest at the origin of an xy coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 35 o with respect to the positive x axis. The heavier car moves at

Physics
An object of mass 1.25 kg on a flat surface has two forces acting on it, F1 and F2 in the horizantal direction. F1 acts in the positive direction, F2 acts in the negative direction. The magnitude of F1 is 26.75 N. The object moves strictly along the

physics
An unstable atomic nucleus of mass 17.0 ¡Ñ 10¡V27 kg which is at rest disintegrates into three particles. One of the particles, of mass 5.00 ¡Ñ 10¡V27 kg, moves in the y direction with speed 4.50 Mm/s. Another, with mass 8.40 ¡Ñ 10¡V27 kg, moves

physics
A mass M = 0.464 kg moves with an initial speed v = 2.98 m/s on a level frictionless air track. The mass is initially a distance D = 0.250 m away from a spring with k = 844 N/m, which is mounted rigidly at one end of the air track. The mass compresses the

Physics
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 63.4° at a speed of v1 = 24.8 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum

physics
1.Give examples of a onedimensional motion where (a) the particle moving along positive xdirection comes to rest periodically and moves forward. (b) the particle moving along positive xdirection comes to rest periodically and moves backward. 2.Give

Physics
A 1100 kg car collides with a 1400 kg car that was initially at rest at the origin of an xy coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 25 o with respect to the positive x axis. The heavier car moves at

Physics
A wave with frequency 12.2Hz and amplitude 47.7 mm moves in the positive x direction with a speed of 8.9 m/s. What is the waves wavelength?

physics
A wave with frequency 11.3Hz and amplitude 48.1 mm moves in the positive x direction with a speed of 5.6 m/s. What is the waves wavelength?

physics
A wave with frequency 11.3Hz and amplitude 48.1 mm moves in the positive x direction with a speed of 5.6 m/s. What is the waves wavelength?

physics
Two masses are involved in an elastic collision. The first has a mass of 0.150 kg and an initial velocity of 0.900 m/s directed at an angle of 50 degrees with the positive yaxis as shown below. The second mass, of 0.260 kg moves along the xaxis with an

Physics
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 56.2° and a speed of v1 = 24.8 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum

physics
A mass M = 5 kg moves with an initial speed v = 3 on a level frictionless air track. The mass is initially a distance D = 0.250 m away from a spring with k = 844 N/m, which is mounted rigidly at one end of the air track. The mass compresses the spring a

physics
A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.60 s, it is at point (4.30 m, 6.20 m) with velocity (3.30 m/s) and acceleration in the positive x direction. At time t2 = 13.0 s, it has

PHYSICS1
A particle moves along a circular path over a horizontal xy coordinate system, at constant speed. At time t1 = 4.90 s, it is at point (5.30 m, 5.30 m) with velocity (2.20 m/s) and acceleration in the positive x direction. At time t2 = 14.0 s, it has

Physics
In an elastic collision: mass a is 1kg, and is moving at 100ms^1 in the +ve x direction when it hits mass b, 10kgs at rest. Given: mass a moves off at 80 ms^1 in the ve x direction. What's the final velocity of mass b. Using cons of momentum, i say 2 ms^1

physics
A satellite with a mass of 260 kg approaches a large planet at a speed vi,1 = 13.1 km/s. The planet is moving at a speed vi,2 = 10.2 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a

PHYSÝCS HELP
A satellite with a mass of 113 kg approaches a large planet at a speed vi,1 =10.3 km/s. The planet is moving at a speed vi,2 =14.6 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a direction

Physics
An electron that has velocity v = (3 x 105 m/s) and moves along positive x direction through the uniform magnetic field B = (0.8T) which is along the positive z direction. a. Find the force on the electron (magnitude and direction). (e =  1.6 x 1019 C,

physics
19. A ball with a mass of 2 kg moves to the right at a speed of 0.28 m/s. It hits a ball of mass 0.5 kg which is at rest. After collision, the second ball moves to the right with a speed of 1.5 m/s. What is the speed and direction of the first ball after

physics
a cannon of mass 400kg fires a shell of mass 20kg. if the shell leaves the cannon at 300ms^1, with what velocity does the cannon recoil? an a particle is emitted from a polonium nucleus at a speed of 1.8 x 10^7 ms^1. the relative masses of the a

Physics
A ball A having a speed of 44.0 ms1 collides with another ball, B, of the same mass which is initially at rest. After the collision A is deflected, 45.0 from its initial direction and B moves off at an angle of 30.0° to the original direction of A. a.

Physics
A ball A having a speed of 44.0 ms1 collides with another ball, B, of the same mass which is initially at rest. After the collision A is deflected, 45.0 from its initial direction and B moves off at an angle of 30.0° to the original direction of A. a.

physics
Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: I think the answer is D.Since frequency is equal to T=1/f so f=1/T.

Physics
A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after the impact, a 200g piece moves along the xaxis with a speed of 2.00m/s and a 235g piece moves along the the y axis with a speed of

physics Helppp
3 mass are collienear formation A, B, C massA is 363 kg and is .5m away from mass B (517 kg)and mass B is .25m away from mass C (154kg) Find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction

Physics  Repost because of no response
1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s [N44oE], what was the initial

Physics  Am I correct?
1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s [N44oE], what was the initial

Physics
In two successive chess moves, a player first moves his queen four squares forward, then moves the queen five steps to the left (from the player’s view). Assume each square is 2.0 cm on a side. Using forward (toward the player’s opponent) as the

Physics
A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the

Physics
a body (A) is moving with a speed of 250m/s in the positive xdirection, collides with body (B) initially at rest and having the same mass as (A). after collision the speed of body (A) is 100m/s making 30 degree with the horizontal. the speed and direction

Physics
Jogger A, with a mass of 55kg, is traveling 6.00m at 3.45 m/s in the positive xdirection. Jogger B, with a mass of 62kg, is traveling 3.00m at 4.23 m/s in the positive xdirection. Jogger C, with a mass of 72kg, is traveling 5.00m in the negative

physics
In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the second ball had a speed

Physics
A particle moving at a velocity of 4.8 m/s in the positive x direction is given an acceleration of 3.4 m/s2 in the positive y direction for 4.4 s. What is the ﬁnal speed of the particle? Answer in units of m/s.

physics
Cheetahs can sustain speeds of 25 m/s over short distances. One of their prey is Thomson's gazelle, with top speed about 22 m/s. If a 52kg cheetah running southward at top speed grabs and holds onto a 23kg gazelle running westward at 22 m/s, find the

physic mechanic
An ant with mass 0.15 g lands on one end of a floating 4.75 g stick. After sitting at rest for a moment, it runs toward the other end with a speed of 3.8 cm/s relative to the river. What is the speed of the stick if it moves in the opposite direction?

physic
An ant with mass 0.15 g lands on one end of a floating 4.75 g stick. After sitting at rest for a moment, it runs toward the other end with a speed of 3.8 cm/s relative to the river. What is the speed of the stick if it moves in the opposite direction? A)

Physics
Two particles, of mass m and mass nm, undergo a headon, fully elastic collision. (Here n is just a unitless number.) Before colliding the particles approach one another with equal speed v. Snapshots of the particles before, during, and after the collision