Question

plz answer this questions

Class 9th
Physics subject ​

Answer 1

Answer:

1 . Applications -- submarine

hot air balloon

2. A stone is hung from a spring balance and its weight recorded. The stone, still attached to the spring balance, is then immersed in some liquid and the weight again recorded. When the stone is immersed in the liquid it appears to weigh less. The reason for this is that the liquid is pushing up on the stone.

3. volume = 20 cm3

mass = 50 g

density of substance = 50/20

= 2.5 g cm-3

density of water = 1 g cm-3

density of substance is more than water it

means it will sink .

Explanation:

Mark as brainlliest .

Answer 2

Thanks you my cutie pie