Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

PHYSICS CHAP1

QuestionAnswer
WHT TYPE OF RADATION IS GAMMA RADIATION IS... EM RADIATION EMITTED BY UNSTABLE NUCLEUS .NO MASS AND NO CHARGE.IT IS EMITTED BY A NUCLEUS WITH TOO MUCH ENERGY FOLLOWING ALPHA AND BETA EMISSION.
WHN DOES GAMA REDATION OCCUR... AFTER BETA AND ALPHA RAD.COZ NUCLEUS HAS TOO MUCH ENREGY.
WHAT IS THE CHARGE OF GAMMA RADIATION .... NO CHANGE NO MASS.
A VERY ELUSIVE PARTICLE:WHEN THE ENERGY SPECTRUM OF BETA PARTICLE MEASURED IT WAS DISCOVERED THAT....
BETA PARTICLES RELEASED KINETIC ENERGIES UP TO A MAXIMUM THAT DEPENDS ON THE ISOTOPE.
WHAT WAS THE MYSTERY ... EITHER ENERGY WASN'T; CONSERVED IN THE CHARGE OR SOME CARRIED AWAY BY NEUTRINOS AND ANTINEUTRINOS.
ANTINEUTRINOS WHERE DETECTED AS A RESULT OF.... ITS INTERACTION WITH CADMIUM NUCLEI IN LARGE TANK OF WATER.
WHAT PARTICLES SEEP THROUGH OUR BODIES FROM THE SUN... THE ELUSIVE PARTICLE THE NUETRINO
WHTA EM WAVECAN WE SEE. LIGHT WE CAN ONLY SEE LIGHT . OUR EYES CANNOT DETECT THE REST.
ALL EM RADIATION TRAVEL AT ... SAME SPEED OF LIGHT IN A VACUUM. 1.0 X108MS-1.
SPEED OF WAVE.... = WAVELENGTH AND FREQUENCY.
WE EXPRESSED LIGHT WAVELENGTH IN UNITS ... NANOMETRES.
EM WAVE CONSIST OF.... ELECTRIC AND MAGNETIC FEILD WHICH TRAVEL TOGETHER AND VIBRATE: TO RIGHT ANGLE TO EACH OTHER AND IN THE DIRECTION THEY ARE TRAVELLING.
WHT PHASE ARE ELECTRIC AND MAG WAVES IN... IN PHASE WITH EACH OTHER.- SO YOU CAN SEE WHERE THEY REACH A PEAK TOGETHER.(IN PHASE)
EM WAVES ARE EMITTED BY..... CHARGE PARTICLE WHEN IT LOSES ENERGY.
WHEN CAN EM WAVES BE EMMITTED ... WHEN FAST MOVING ELECTRON IS STOPPED ( E.G.. IN X RAY TUBE ) OR SLOW DOWN OR CHANGED DIRECTION. AN ELECTRON IN SHELL OF ATOM MOVES TO DIFF SHELL OF LOWER ENERGY.
EACH BURST IN EM WAVES LEAVE THE SOURCE IN... DIFF DIRECTION. EACH BURST IS A PACKET OF EM WAVES CALLED PHOTON.
WHAT DO EM WAVES EMITT IN DIF DIRECTIONS ... PHOTONS.
WHAT IS A PHOTON ... A PACKET OF WAVES.
THE PHOTON THEORY WAS ESTABLISHED BY/IN/WHEN... EINSTEIN IN 1905 WHEN EXPLAINING PHOTOELECTRICITY.
WHAT IS PHOTOELCTRICITY/FROM/WHEN... EMISSION OF ELECTRONS FROM A METAL SURFACE WHEN LIGHT DIRECTED AT SURFACE.
EINSTEIN IMAGINE PHOTONS TO BE LIKE ... FLYING NEEDLES.
PHOTON ENERGY EQUATION ... =HF H IS THE PLANCK CONSTANT 6.63 X10^-34JS.
LASER BEAM CONSIST OF PHOTONS OF ... THE SAME FREQUENCY.
THE POWER OF A LASER BEAM IS THE/BY /E.G... THE ENERGY PER SECOND TRANSFERRED BY THE PHOTONS. E.G. POWER OF THE BEAM =NHF. WHERE N IS THE NUMBER OF PHOTON PASSING A FIXED POINT EACH SEC.
THIS IS COZ EACH PHOTON HAS ENERGY HF.
POWER OF A BEAM EQUATION ... NHF
WHTA MAKES UP OUR UNIVERSE... ANTIMATTER AND MATTER MAKE UP OUR UNIVERSE.
WHEN ANTIMATTER AND MATTER MEET THEY/RELEASE... DESTROY EACH OTHER AND RADIATION IS RELEASED.
THE P IN PET SCANNER STANBDS FOR.... POSITRON WHICH IS A ANTIPARTICLE OF AN ELECTRON.
WHAT IS A POSITRON ... AN ANTIPARTCICLE OF AND ELECTRON. HAS POSITIVE CHARGE.
WHEN A PET SCANNER IS USED FOR BRAIN SCAN A P ... A POSITRON EMITTING ISOTOPE IS ADMINISTERED TO PATIENT
AND SOME OF IT REACHES THE BRAIN VIA BLOOD SYSTEM.
EACH POSITRON EMITTED TRAVELS NO FURTHER THAN.... A FEW MILOMETERS BEFORE IT MEETS AN ELECTRON AND THEY ANNIHILATE EACH OTEHR.
Created by: ufuoma
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards