A firecracker explodes in midair and breaks up into many fragments. Which of the following statements are true regarding conditions immediately before and immediately after the explosion: I.
The total momentum of the fragments is equal to the original momentum of the firecracker. II. The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker. A) Statement I only
B) Statement II only
C) Both Statement I and Statement II
D) Neither statement is true.
Question 2
A radioactive nuclide of atomic number Z emits an alpha particle and the daughter nucleus then emits a beta particle. What is the atomic number of the resulting nuclide?
A) Z-1
B) Z+1
C) Z-2
D) Z-3
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