Please answer me these questions
@Brainlyyoda and ithe other senior experienced members of brainly
Answers
1. Halved
Pressure at base is given by the following formula :
When volume is halved , the pressure is also halved.
2. 12 N
Since the body is floating, the Buoyant Force is equal and opposite to the weight of the body.
3. Mass
Gravitational acceleration is given as follows :
where M => mass of planet , r => radius of Earth.
4. Cation
When electron is removed , an atom forms a positively charged ion known as Cation.
5. 3 metres
As per image properties of a plane mirror , the image will move same distance as that of the object.
6. Reflective
The light rays are reflected along the 2 mirrors in a periscope and seen by an observer.
7. 0 ( zero ) degree
If the refractive indices are same, the light rays don't get refracted and hence the angle between them is zero degree.
8. Lesser ( < 0°C)
As per Depression in Melting Point of solutions , the melting point of ice with salt will be < 0°C.
9. Warm
The person feels more warm as more amount of air is trapped within the clothes. Air being bad conductor of heat prevents heat loss.
10. Bad
Ice instead of transferring heat ;uses it to melt itself. Hence its a bad conductor of heat.
11. Virtual
Since the rays are totally internally Reflected , the rays are returned towards the medium of it's source. Hence it is virtual image.
12. Good
Metals are good conductors of heat because they have free surface electrons for conducting the heat Current through them.
Graphite and Diamond ( Allotropes of Carbon)
Their peculiar electron arrangements allow heat flow through these non-metals.
13. Higher
Ductility refers to the ability of a metal to be drawn into a wire. Gold has higher ductility as compared to iron. This property helps in production of Jewellery.
Answer:
1) Halved
2) 12N
3) Mass
4) Cation
5) 3 metres
6) Reflective