Learning goal: to practice problem-solving strategy 29.1 forcharge interaction problems.
a proton and an alpha particle are momentarily at rest at adistance r from each other. they then begin to move apart. find the speed of the proton by the time the distance between theproton and the alpha particle doubles. both particles arepositively charged. the charge and the mass of the proton are, respectively, e and m. the e charge and the mass of the alphaparticle are, respectively, 2e and 4m.
find the speed of the proton (vf)p by the time the distancebetween the particles doubles.
express your answer in terms of some or all of the quantities, e, m, r, and ? 0.
which of the following quantities are unknown?

a initial separation of the particles
b final separation of the particles
c initial speed of the proton
d initial speed of the alpha particle
e final speed of the proton

Study the following reaction carefully. what classification should this reaction have? 4al + 3o2 2al2o3synthesisdecompositionsingle replacementdouble displacement

Which is not true about oxygen-17 and oxygen-18?

Aball is thrown upward. at a height of 10 meters above the ground, the ball has a potential energy of 50 joules (with the potential energy equal to zero at ground level) and is moving upward with a kinetic energy of 50 joules. what is the maximum height h reached by the ball? consider air friction to be negligible. 1. h ≈ 10 m 2. h ≈ 50 m 3. h ≈ 30 m 4. h ≈ 40 m 5. h ≈ 20 m 003 10.0 points which of the two object shown below has the greatest kinetic energy? a m b 1 2 m v 2v 1. kinetic energies are the same. 2. a 3. b 4. unable to determine. 004 10.0 points tim, with mass 74.6 kg, climbs a gymnasium rope a distance of 3.1 m. the acceleration of gravity is 9.8 m/s 2 . how much potential energy does tim gain? answer in units of j. 005 10.0 points a car is moving at 64 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when it moves at 111 miles per hour? answer in units of j. 006 10.0 points an 102 kg man climbs up a 1 m high flight of stairs. the acceleration of gravity is 9.81 m/s 2 . w