two mass spring systems vibrate with simple harmonic motion. if the spring constants are equal and the mass of one system is twice of the other, which system has a greater period?

Which is not true about oxygen-17 and oxygen-18?

Which planet do you think would be easiest for humans to colonize some day?

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.