Homework Answers
Problem - 6
Using conservation of energy
Gain in kinetic energy = Loss in electric potential energy
Thus
which gives us
and the energy in electron volts will be
which gives us
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Points A and B have potentials of +250 V and-150 V respectively. An alpha particle (a...
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a...
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a helium atom stripped of its electrons (i.e., it is the nucleus of a helium atom, which consists of two protons and two neutrons). If this alpha particle is accelerated through a potential difference of 588 V, how much kinetic energy does it gain in units of eV (electron volts)? Answer to at least three significant figures. 1 eV = 1.6 x 10-19 J and...
4th time asking this. Very pissed at the "experts" here. Please be correct An alpha particle...
4th time asking this. Very pissed at the
"experts" here. Please be correct
An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 10.3 MeV (10.3 times 10^6 EV), and heads in the +x direction straight toward a gold nucleus (containing 79 protons and 118 neutrons). The particles are initially far apart, and the gold nucleus is initially at rest. Answer the following questions about the collision. What is the initial momentum...
An alpha particle with a kinetic energy of 12.0 MeV makes a head-on collision with a...
An alpha particle with a kinetic energy of 12.0 MeV makes a head-on collision with a gold nucleus at rest. What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary and that it may be treated as a point charge. A gold nucleus has 79 protons, and an alpha particle is a helium nucleus consisting of two protons and two neutrons. The mass of an alpha particle is 6.64424 x 10-27 kg....
An alpha particle with a kinetic energy of 10.0 MeV makes a head-on collision with a...
An alpha particle with a kinetic energy of 10.0 MeV makes a head-on collision with a gold nucleus at rest. What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary and that it may be treated as a point change. The atomic number of gold is 79, and the alpha particle is a helium nucleus consisting of 2 protons and 2 neutrons).
If the alpha particles have an initial kinetic energy of 7.7 MeV, then assuming a head-collision...
If the alpha particles have an initial kinetic energy of 7.7 MeV, then assuming a head-collision between an alpha particle (helium nucleus with +2e charge) and a gold nucleus (79 protons, so +79e charge), and using conservation of energy at the point of closest approach when all of the alpha particle's kinetic energy is converted to electric potential energy, calculate the approximate distance of closest approach (and thus coarsely estimate the size of the nucleus)
Problem 10.23 An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out...
Problem 10.23 An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 9.9 MeV (9.9 x 100 eV), and heads in the +x direction straight toward a gold nucleus (containing 79 protons and 118 neutrons). The particles are initially far apart, and the gold nucleus is initially at rest. Answer the following questions about the collision. What is the initial momentum of the alpha particle? (You may assume its speed is small...
An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons....
An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons. Such particle has an initial velocity of +1.60*10^3 m/ s x and enters a region where the electric field is E =- 500.N / C x . a) How much time passes before the alpha particle comes to rest? b) How far has the alpha particle traveled during this time? b) How far has the alpha particle traveled during this time?
In the figure a particle is to be released at rest at point A and then...
In the figure a particle is to
be released at rest at point A and then is to be accelerated
directly through point B by an electric field. The potential
difference between points A and B is 100 V. Which point should be
at higher electric potential if the particle is (a) an electron,
(b) a proton, and (c) an alpha particle (a nucleus of two protons
and two neutrons, 4He)? (d) Compute the kinetic energies of these
particles at...
A nucleus whose mass is 3.730032 x 10-25 kg undergoes spontaneous "alpha" decay. The original nucleus...
A nucleus whose mass is 3.730032 x 10-25 kg undergoes spontaneous "alpha" decay. The original nucleus disappears and there appear two new particles: a He-4 nucleus of mass 6.640678x10-27 kg (an "alpha particle" consisting of two protons and two neutrons) and a new nucleus of mass 3.663533 x 10-25 kg (note that the new nucleus has less mass than the original nucleus, and it has two fewer protons and two fewer neutrons). In these calculations, it is very important to...
The electric field between two parallel plates connected to a 45‐V battery is 1300 V/m. a....
The electric field between two parallel plates connected to a 45‐V battery is 1300 V/m. a. How far apart are the plates? b. An alpha particle (which is a helium nucleus, Q =+2e, m = 6.64 x 10‐27 kg) is released from rest at the positive plate and travels to the negative plate. i. What is the change in potential energy of the alpha particle as it travels from the positive to the negative plate? ii. What is the speed of...
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a helium atom stripped of its electrons (i.e., it is the nucleus of a helium atom, which consists of two protons and two neutrons). If this alpha particle is accelerated through a potential difference of 588 V, how much kinetic energy does it gain in units of eV (electron volts)? Answer to at least three significant figures. 1 eV = 1.6 x 10-19 J and...
4th time asking this. Very pissed at the
"experts" here. Please be correct
An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 10.3 MeV (10.3 times 10^6 EV), and heads in the +x direction straight toward a gold nucleus (containing 79 protons and 118 neutrons). The particles are initially far apart, and the gold nucleus is initially at rest. Answer the following questions about the collision. What is the initial momentum...
Problem 10.23 An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 9.9 MeV (9.9 x 100 eV), and heads in the +x direction straight toward a gold nucleus (containing 79 protons and 118 neutrons). The particles are initially far apart, and the gold nucleus is initially at rest. Answer the following questions about the collision. What is the initial momentum of the alpha particle? (You may assume its speed is small...
In the figure a particle is to
be released at rest at point A and then is to be accelerated
directly through point B by an electric field. The potential
difference between points A and B is 100 V. Which point should be
at higher electric potential if the particle is (a) an electron,
(b) a proton, and (c) an alpha particle (a nucleus of two protons
and two neutrons, 4He)? (d) Compute the kinetic energies of these
particles at...
A nucleus whose mass is 3.730032 x 10-25 kg undergoes spontaneous "alpha" decay. The original nucleus disappears and there appear two new particles: a He-4 nucleus of mass 6.640678x10-27 kg (an "alpha particle" consisting of two protons and two neutrons) and a new nucleus of mass 3.663533 x 10-25 kg (note that the new nucleus has less mass than the original nucleus, and it has two fewer protons and two fewer neutrons). In these calculations, it is very important to...
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