why ? 1- Alpha particles have a great ability to ionize gases, while they have a weak ability to penetrate.
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Q: Which of the following about the gamma ray is true? a. It carries a positive charge b. It can be…
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why ?
1- Alpha particles have a great ability to ionize gases, while they have a weak ability to penetrate.
2- The energy of a gamma-ray photon is much greater than that of an X-ray photon
3- Negative beta particles are released from the nucleus of an atom even though the nucleus is positively charged
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- 5.Match each type of radiation with its properties. 1.can penetrate paper but not a sheet of metal such as aluminum foil 2.can travel no more than a few centimeters in air and cannot penetrate a piece of paper or human skin 3.can penetrate many materials but not concrete or lead a. gamma radiation b. beta radiation c. alpha radiation6. If Nitrogen-14 absorbs an alpha particle and then emits a Hydrogen-1, what is the resulting nucleus? 7. If Au-185 emits an alpha particle, what is the nucleus formed? 8. What nucleus emits an alpha particle and forms Th-234?1. There are 82 protons in a lead nucleus. Why doesn't the lead nucleus burst apart? a) Coulomb repulsive force doesn't act inside the nucleus b) gravity overpowers the Coulomb repulsive force inside the nucleus c) the negatively charged neutrons balance the positively charged protons d) protons lose their positive charge inside the nucleus d) None of the other responses are correct
- Q3: The table shows two isotopes of potassium and two isotopes of calcium. Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass/u Mass defect/ u Binding energy / J Mass of the electron = 0.000549 u Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 u TI ***** LEG 39K Stable 38.96371 SE nda 42K ß decay a) Use data about potassium-42 to explain the concept of mass defect. 3000 41.9624 19 19 23 42.34797 0.38557 5.76 x 10-11 De RAP 39 Ca ßt decay 38.9707 440 **** ****** D 42 Ca stable 41.95863The Inverse Square Law: Oa. The x-ray beam is directly proportional to the square of distance from the source. Ob. The x-ray beam is directly proportional to half the distance from the source. Oc. The x-ray beam is inversely proportional to half the distance from the source. d. The x-ray beam is inversely proportional to the square of distance from the source.Select each of the following that is a characteristic of alpha decay. The mass number of the nucleus that decays decreases by 4. O The radiation that is produced carries a negative charge. O The atomic number of the nucleus that decays increases. The chemical element of the nucleus that decays remains unchanged. O The mass number of the nucleus that decays remains unchanged. The mass number of the nucleus that decays decreases by 2. O The radiation that is produced carries a positive charge. The atomic number of the nucleus that decays decreases.