A vibrator produces 48 ripples per 6 seconds across a water tank. The ripples are 4cm apart. Calculate the velocity of the ripples.
An object of mass 120g half immersed in water displaced a volume of 20cm^3. Calculate the density of the object
The recommended tire pressure is 35-36 PSI but i use 40 PSI for rear wheels and 37 psi for front wheels. Is there a problem with that?
A vehicle moving at 90 km/h and another moving 55 km/h with the same engine lets say 5A and same distance. Which one is likely to save fuel?