How does a submarine float and sink?

How does a submarine work?

How does a syringe work?

A plane is flying at the height of 5000 m above the sea level. At aparticular point, it is exactly above a submarine floating 1200 m belowthe sea level. What is the vertical distance between them?

Why does an object float or sink when placed on the surface of water?

A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m ,

A sailor in a boat, which is going due east with a speed of 8m//s observes that a submarine is heading towards north at a speed of 12m//s and sinking at a rate of 2 m//s .The commander of submarine observes a helicopter ascending at a rate of 5 m//s and heading towards west with 4 m//s .Find the speed of the helicopter with respect to boat.

Food is transported by the vascular tissue phloem from a source to a sink. The source and sink may be reversed depending on the

Marble acts as a sink for

A SONAR system fixed in a submarine operates at a frequency 40.0kHz. An enemy submarine moves towards the SONAR with a speed of 360 km h^(-1) . What is the frequency of sound reflected by the submarine ? Take the speed of sound in water to be 1450 ms^(-1) .

Sodium peroxide is used to purify the air in submarines and confined spaces because: