# Physics

A proton of mass mP and a positively charged nucleus of mass 9mP are widely separated and traveling towards each other at the same speed of 1500 m/s along the same line.  Because they are both positively charged, they repel each other and undergo a soft head-on collision.  As you know, the electrostatic repulsive force is a conservative force so the 'collision' is perfectly elastic when we consider the speeds a long time before and a long time after the collision (when they are essentially no longer interacting).

What is the final speed of the proton (in m/s) when they are again widely separated?  (i.e. when they exert negligible forces on each other, and their speeds are no longer changing.)

(Note:  you don't actually need the mass of the proton here, only the mass ratio '8', since mP will cancel out of both of your equations.)

1. 👍 0
2. 👎 0
3. 👁 145
1. its impossible. given the speed of protons it would pass through

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Honors Physics- Help PLEASE- Test tmrw

A tritium nucleus is formed by combining two neutrons and a proton. The mass of this nucleus is 9.106 × 10–3 universal mass unit less than the combined mass of the particles from which it is formed. Approximately how much

asked by Sanya on June 4, 2013
2. ### Physical Science

Consider three objects: A, B, and C. If A is positively charged, B repels A, and C is attracted by A, what can you say about the charge on B and C? A. B is positively charged and C is negatively charged. B. B is negatively charged

asked by Mimic on July 2, 2020
3. ### physics

5. A tin nucleus has charge +50e. Find the potential V at a distance of 10-12 meters from the nucleus and the potential energy U of a proton at this position. The proton has charge +e = 1.6 x 10-19 C

asked by ike on March 5, 2011
4. ### Chemistry

Check answers? 1) Why did J.J. Thomson reason that electrons must be a part of the atoms of all elements? A) Cathode rays are negatively charged particles**** B) Cathode rays can be deflected by magnets C) An electron is 2000

asked by Mary on October 7, 2016
5. ### Physics HELP!

You are at the controls of a particle accelerator, sending a beam of 3.90×10^7 m/s protons (mass m ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one

asked by Allison on May 11, 2011
1. ### Physics

A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. The proton is fired at a speed of 1.80×107 m/s. When it passes the nucleus, how close

asked by Anonymous on February 26, 2016
2. ### Chemistry

Which of the following are key parts of Dalton's Atomic Theory (Click the 4 that apply)? (1 point) All elements are composed of tiny indivisible particles called atoms*** Atoms of the same element are identical. The atoms of any

asked by Spring Allergies on September 30, 2019
3. ### physics

A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it decays into an a particle of mass 6.64×10−27 kg and 234Th nucleus of mass 3.88 × 10−25 kg, and the decay process itself is extremely

asked by Anonymous on January 16, 2010
4. ### Physics

Near the surface of the Earth there is an electric field of about V=150 V/m which points downward. Two identical balls with mass m= 0.550 kg are dropped from a height of 2.30 m, but one of the balls is positively charged with q1=

asked by Ambrie on February 7, 2010
5. ### 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

asked by alexis on September 29, 2008
6. ### Physics

A proton with mass 1.67×10−27 kg and charge 1.60×10−19 C accelerates from rest in a uniform electric field of strength 500 N/C. (a) What is the magnitude of the acceleration of the proton? (b) How long does it take the

asked by Jane on July 10, 2014