C a glass eye is my best guess because its all glass and a fake eye not actually working so thats my theroy.
They are called lubricants.
Answer:
5.3 kg
Explanation:
The rope attached to the ceiling has a tension 64 N.
The rope attached to the wall has a tension T.
The rope attached to the block has a tension Mg.
Sum of the forces at the junction in the y direction:
64 sin 55° − Mg = 0
Mg = 64 sin 55°
M = 64 sin 55° / g
M = 64 sin 55° / 9.8
M = 5.3
The mass of the block is 5.3 kg.
Answer: option d: The nucleus of Atom Q is more stable than the nucleus of Atom P.
Explanation:
Atom P is radioactive and disintegrates, it emits beta particles (high speed electrons or positrons) because it is not stable. On disintegration, it forms a stable Atom Q which is non-radioactive and thus it does not disintegrates further.
Thus, the correct option is only d. The nucleus of Atom Q is more stable than the nucleus of Atom P.