Question

define second peneluleus​

Answer 1

A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz.

Answer 2

Answer:

sᴇᴄᴏɴᴅs ᴘᴇɴᴅᴜʟᴜᴍ ɪs ᴀ ᴘᴇɴᴅᴜʟᴜᴍ ᴡʜᴏsᴇ ᴘᴇʀɪᴏᴅ ɪs ᴘʀᴇᴄɪsᴇʟʏ ᴛᴡᴏ sᴇᴄᴏɴᴅs; ᴏɴᴇ sᴇᴄᴏɴᴅ ғᴏʀ ᴀ sᴡɪɴɢ ɪɴ ᴏɴᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴀɴᴅ ᴏɴᴇ sᴇᴄᴏɴᴅ ғᴏʀ ᴛʜᴇ ʀᴇᴛᴜʀɴ sᴡɪɴɢ, ᴀ ғʀᴇǫᴜᴇɴᴄʏ ᴏғ 0.5 Hz.