Atomic and Nuclear Physics Answers

protons of energy 3 MeV bombard Li7 and neutrons are emitted from the target at right angles to the incident beam of protons. The Q-value of the reaction 3Li7 (p,n)4Be7 is -1.8 MeV.
(1) Calculate the energy of the emitted neutrons.
(2) Derive the expression of the Q-value you use.

Give two examples each of bosons and fermoins and state which of these is subject to exclusion principle

During a positive beta decay, while the proton decays to form a neutron, a positron and a neutrino, there is an increase in mass, but this mass increase is not reflected in certain examples of positive beta decay. Why? where does the increased mass go? and moreover, according to the laws of physics and chemistry, mass remains conserved and is interconvertible to energy. but in this case, mass increases in an intranuclear reaction. is it even possible? Mass should not increase but accpording to the equation it does. Why? Please contact as soon as possible.

when earth and moon are separated by a distance of 3.84x10^8 meters, the magnitude of gravitational force of attraction between them is 2.0x10^20netwons.What would be magnitude of gravitational force if earth and moon separated by distance of 1.92x10^8 meters?

Complete the following statement: The term ionizing radiation does not apply to
(a) alpha particles. (c) X-ray photons. (e) radio photons.
(b) electrons. (d) positrons.

A nuclear reactor continuously generates 150 MW of power through the fissioning of uranium. Suppose that each fission releases 190 MeV. If one mole of uranium (6.023 ×10^23 nuclei) has a mass of 0.235 kg, what mass of uranium has undergone fission in a 4.0 day period?

Each croquet ball in a set has a mass of 0.48
kg. The green ball, traveling at 11.2 m/s,
strikes the blue ball, which is at rest.
Assuming that the balls slide on a friction-
less surface and all collisions are head-on, find
the final speed of the blue ball in each of the
following situations:
a) The green ball stops moving after it
strikes the blue ball.
Answer in units of m/s

why we prefer mercury to use in the glass bulb of a thermometer?

what happens to an x-ray spectrum when the tube voltage is changed?