Impermeable is a substance that is water proofed e.g glass, aluminium e.t.c <span />
If one of the answers are the coin will float that one would be correct.
I’m sorry I don’t understand this language
A wooden log is displaced to a distance of 20m in 10 seconds by applying 500N effort . Calculate the workdone and power...
Solution,
displacement = 20 m
time = 10 sec
force = 500 N
work done = ?
power = ?
Now ,
work done = f × s
= 500 N × 20 m
= 10000 j
Now ,

~nightmare 5474~