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PHYSICS 1

QuestionAnswer
FROM RUTHERFOLDS ALPHA SCATTERING EXPERIMENT WE KNOW 2 THINGS ... A POSITIVELY CHARGE NUCLEUS COMPOSED OF PROTONS AND NEUTRON THE ELECTRONS THAT SURROUND THE NUCLEUS.
WE USE NUCLEON FOR .... PROTON OR NEUTRINO IN NUCLEUS.
THE ELECTRON ARE HELD IN ATOM BY.... ELECTROSTATIC FORCE OF ATTRACTION BETWEEN THEM AND THE NUCLEUS.
RUTHERFORD'S EXPERIMENTS REVEALED THAT.... THE NUCLEUS CONTAINS MOST OF MASS OF ATOM AND IT’S DIAMETER IS OF ORDER OF 0..00001 TIMES THE DIAMETER OF TYPICAL ATOM.
3 FACTS ABOUT NUCLEUES ARE... 1. ELECTRON HAS A SMALLER MASS THAN PROTON AND NEUTRON. 2. PROTON AND NEUTRON HAVE ALMOST EQUAL MASS. 3. THE ELECTRON EQUAL AND OPPOSITE CHARGE TO PROTON. THE NEUTRON UNCHARGED.
THE TOTAL NUMBER OF PROTON AND NEUTRON CALLED.... (NUCLEON NUMBER (A) MASS NUMBER. NUCLEON (PROTON OR NEUTRON).Z AT BOTTOMS AND A AT TOP.
UNCHARGED ATOM HAS EQUAL... NUMBER OF PROTONS AND ELECTRONS .
AN ION IS A CHARGED ATOM THAT HAS .. GAINED OR LOST ELECTRONS.
EACH TYPE OF NUCLEUS CALLED.... NUCLIDE LABELLED USING ISOTOPE NOTATION. E.G. A NUCLIDE OF C12-6 HAS 2 FEWER NEUTRONS AND 2 FEWER PROTONS THAN NUCLIDE OF OXYGEN ISOTOPE O-16-8.
SPECIFIC CHARGE IS ... ITS CHARGED DIVIDED BY THE MASS.
WHTA HAS THE LARGEST SPECIFIC MASS .... AND ELECTRON
STABLE ISOTOPE HAS A NUCLEI THAT.. DOESN'T; T DISINTEGRATE SO STRONG NUCLEAR FORCE HOLDING IT TOGETHER ,
IT OVERCOME THE ELECTROSTATIC FORCE OF REPULSION BETWEEN PROTON AND KEEPS IT STABLE.
THE STRONG NUCLEAR FORCE HAS RANGE OF ... NO MORE THAN 3-4 FENTOMETERS (FM) WHERE 1 FM – 10^-15 M. THIS RANGE IS ABOUT SAME AS DIAMETER OF NUCLEUS.
ELECTROSTAIC FORCE DECREASES AS.... RNAGE DECREASES (ALTHOUGH IT DECREASES AS RANGE DECREASES.
AT SEPARATION SMALLER THAN THIS IT'S THE REPULSION THAT ACTS TO..... PREVENT NEUTRONS AND PROTONS PUSHING INTO EACH OTHER.
THE EQUILIBRIUM SEPARATION IS WHERE.... FORCE CURVE CROSSES X AXIS.
NATURAL OCCURRING RADIOACTIVE ISOTOPE RELEASE 3 TYPES OF RADIATION .... ALPHA RADIATION – ALPHA PARTICLE WITH 2 PROTONS 2 NEUTRONS. SYMBOL IS 4-2 ALPHA. MASS NUMBER 4 Z NUMBER 2.
WHEN PARTICLE EMITS ALPHAS IT’S; NUCLEON NUMBER DECREASE BY.... 4. THE NUCLEUS EMITS A PARTICAL AND FORMS A NEW NUCLEUS.
BETA PARTICLE EMISSIONS... THE NEUTRON IN NUCLEUS CHANGES INTO PROTON AND THE BETA PARTICLE IS CREATED AND INSTANTLY EMITTED.
IN ALPHA EMISSION IF THE ATOMIC NUMBER CHANGES BY 2... THE ELEMENT IS DIFFERENT.
BETA RADIATION CONSIST OF... FAST MOVING ELECTRONS. IT HAS -1 CHARGE AND SMALLER PROTON MASS=0.
IN ADDITION TO BETA EMITS AN... ANTIPARTICLE WITH NO CHARGE CALLED A ANTINEUTRINO (V-) IS EMITTED.
WHY DOES EBTA EMITS AN ANTINEUTRINO... BECAUSE A NEUTRON CHANGES INTO A PROTON IN NUCLEUS
IN BETA EMMISON THE ATOMIC NUMBER NO.... INCREASES BY 1.NUCLEON NUMBER THE SAME.
AT THE END OF BETA DECAY IS IT THE SMAE ELEMENT ?... NO, NUCLEUS BELONGS TO DIFF ELEMENT. THIS HAPPEN TO NUCLEI WITH TOO MANY NEUTRONS. AZ (X)à A(Z+1)(Y) + -1 0 (BETA) + (V-)
WHT EQUATION FOR BETA DECAY ... AZ (X)à A(Z+1)(Y) + -1 0 (BETA) + (V-)
Created by: ufuoma
 

 



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