Quelpr
1 markNuclear Energy

CSEC Physics · May/June 2017 · Paper 2 · Question 3(c)(v)

Uranium isotope U-238 undergoes nuclear fission when struck by a neutron. Barium-139 and krypton-97 nuclei are emitted along with three neutrons as shown in the equation: 238/92 U + 1/0 n → 139/P Ba + 97/36 Kr + 3 1/0 n. Data provided: Uranium-238 = 398.350 × 10^-27 kg, Barium-139 = 232.560 × 10^-27 kg, Krypton-97 = 152.620 × 10^-27 kg, Neutron = 1.670 × 10^-27 kg, c = 3.0 × 10^8 ms^-1.

State ONE use of the energy released from the reaction.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)(i)What is meant by the term 'nuclear fission'?[1 mark]
  2. 3(a)(ii)State TWO advantages of utilizing nuclear energy.[2 marks]
  3. 3(b)(i)State ONE precaution that workers in nuclear power plants need to take.[1 mark]
  4. 3(b)(ii)Give TWO disadvantages of using nuclear reactors to generate energy.[2 marks]
  5. 3(c)(i)State the value of p.[1 mark]
  6. 3(c)(ii)State the meaning of 'c' in Einstein's equation ΔΕ = Δmc².[1 mark]
  7. 3(c)(iii)Calculate the total mass of the elements formed after the reaction.[2 marks]
  8. 3(c)(iv)Calculate the energy released in the reaction.[4 marks]

More practice: the rest of this paper · more Nuclear Energy questions · all CSEC Physics past papers