a boy runs 10m/sec at 10m/sec and he walks for 30 sec at 10m/sec what is the average of speed of the boy ?
A\ 5M/S B/ 20M/S C/15M/S D/10M/S E/ None
The interior of a submarine located at a depth of 50 m in seawater is maintained at
sea-level atmospheric pressure. Find the force acting on a window 20 cm square.
The density of seawater is 1.03 × 103
kg/m3
1 answer
1 answer