Answer:3.67 s
Explanation:
Given
Ball is thrown with an initial velocity of 
As the ball moves upward it experience a declaration due to gravity which will slow down the ball
using
where v=final velocity
u=initial velocity
a=acceleration
t=time
Here 
Answer:
Mid ocean ridge is formed when old oceanic crust is forced under continental plates.
Explanation:
Ocean basin is a kind of land surface that is present under an ocean and below the water.
Ocean basin contain continental shelf,mid ocean ridge that is found on the sea floor.
The size of ocean basin is equal to the size of an ocean and is found below the ocean.
When, water covers the earth's crust region in the distant past,ocean basin formation occurs.This prcess require long time as spreading of sea floor and tectonic plates takes place.
Ex-Atlantic Ocean basin is formed over million years that is present in the European Continent.
Answer: Yes and no.
Explanation: Mass is the amount of matter in an object, whereas weight is the force exerted on an object by gravity. Objects on the surface of the earth have weight, although sometimes the weight is difficult to measure.
Total internal reflection occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface. <span>Total internal reflection can be observed while swimming, when one opens one's eyes just under the water's surface. If the water is calm, its surface appears mirror-like.</span>
Water boils at lower tempertature at higher altitude
