define activity of a radioactive material and write its si units draw graph for activity vs time ?
What is proton-neuron hypothesis of nuclear composition?
In an atom, two electrons moves around the nucleus in circular orbit of radius R and
show that density of nucleons is independent to mass number.
1amu = 931 Mev .......how do we prove this?
Two nuclei have mass numbers in the ratio 1:8. what is the ratio of their nuclear radii?
CALCULATE THE BINDING ENERGY OF AN ALPHA PARTICLE The mass of 2 protons = 2 x 1.007825 amu
The mass of 2 neutrons = 2 x 1.008665 amu
Total Mass = 4.032981 amu
The actual mass, as measured by a mass spectrometer, is 4.002800 amu.
Delta m = 4.032981-4.002800 = 0.030180
NOW,
Binding energy = 0.030180 * 931 = 28.097 Which is the answer,,,,BUT,The Formua to find B.E is delta m . c^2 so the ans should be like this , = 0.030180 * (3*10^8)^2.... am I right ?
compare the radii of two nuclei with mass numbers 1 and 27 respectively
Prove that the instantaneous rate of change of activity of a radio-active substance is inversely proportional to the square of its half life.
Please explain Davisson aand Germer experiment ... And state it's importance.
the radioactive nuclei X and Y initially contain equal number of atoms. Their half lives are 1 hour and 2 hour respectively. Compare he rate of their disintegration after two hours.
Light with an energy flux of 18W/cm2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm2, find the average force exerted on the surface during a 30 min time span.
define activity of a radioactive material and write its si units draw graph for activity vs time ?
What is proton-neuron hypothesis of nuclear composition?
In an atom, two electrons moves around the nucleus in circular orbit of radius R and
show that density of nucleons is independent to mass number.
1amu = 931 Mev .......how do we prove this?
Two nuclei have mass numbers in the ratio 1:8. what is the ratio of their nuclear radii?
CALCULATE THE BINDING ENERGY OF AN ALPHA PARTICLE
The mass of 2 protons = 2 x 1.007825 amu
The mass of 2 neutrons = 2 x 1.008665 amu
Total Mass = 4.032981 amu
The actual mass, as measured by a mass spectrometer, is 4.002800 amu.
Delta m = 4.032981-4.002800 = 0.030180
NOW,
Binding energy = 0.030180 * 931 = 28.097 Which is the answer,,,,
BUT,
The Formua to find B.E is delta m . c^2
so the ans should be like this ,
= 0.030180 * (3*10^8)^2.... am I right ?
compare the radii of two nuclei with mass numbers 1 and 27 respectively
Prove that the instantaneous rate of change of activity of a radio-active substance is inversely proportional to the square of its half life.
(dps) after 20 hours. After next 10 hours its activity reduces to 5,000 dps.
Find out its half life and initial activity.
Please explain Davisson aand Germer experiment ... And state it's importance.
the radioactive nuclei X and Y initially contain equal number of atoms. Their half lives are 1 hour and 2 hour respectively. Compare he rate of their disintegration after two hours.
Light with an energy flux of 18W/cm2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm2, find the average force exerted on the surface during a 30 min time span.