(a) = 234
(b) = 82
johnmulu answered the question on June 6, 2017 at 12:11
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(a) x (b) y
Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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The following is a nuclear equation for a fission process resulting from the reaction of a neutron with a Uranium nucleus.
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(ii) State the source of the energy released.
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Date posted: June 6, 2017. Answers (1)
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Figure 11 shows the path of radiation from a radioactive source. The field is perpendicular to the paper and directed out of the paper.
(a)Identify the radiation.
(b) (i) State the effect of the radiation on the gas inside the Geiger-Muller tube.
(ii) Explain how the large discharge current is created.
(c) The following is a nuclear equation for a fission process resulting from the reaction of a neutron with a Uranium nucleus.
(i) Determine the values of x and y.
ii) State the source of the energy released.
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Alcohol
Solid CO2
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Date posted: June 6, 2017. Answers (1)
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(iii) What is the purpose of the halogen vapour?
Date posted: June 6, 2017. Answers (1)
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Name the radiation x
Date posted: June 6, 2017. Answers (1)
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Figure 3 shows a device for producing metal foils of constant thickness. Any change in thickness can be detected by the Geiger tube and recorded by the Geiger counter. The pressure exerted by the roller is then adjusted to keep the thickness constant.
(i) State the change in the metal foil that will lead to a decrease in the Geiger counter reading.
(ii) Give a reason for your answer in (i) above.
(iii) State the change in the roller pressure that should be made as a result of this decrease in the Geiger counter reading.
(vi) Give a reason for answer in (iii) above.
Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Figure 2 shows the path of radiation from a radioctive source after entering a magnetic field. The magnetic field is directed into the paper and is perpendicular to the plane of the paper as shown in the figure.
Identify the radiation. Give a reason for your answer.
Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)
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Figure 6 shows a graph of the variation of the number of atoms of a certain radioctive material with time.
Determine the half-life of the material.
Date posted: June 6, 2017. Answers (1)
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Figure 8 shows ultra-violet light striking a polished zinc plate placed on a negatively charged gold-leaf electroscope.
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Date posted: June 6, 2017. Answers (1)
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In figure 18 ultra-violet (u.v.) light falls on a zinc plate placed on a charged leaf electroscope. It is observed that the leaf collapses.
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Date posted: June 6, 2017. Answers (1)
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Date posted: June 6, 2017. Answers (1)