# User Forum

Subject :NSO    Class : Class 9

## Ans 1:

Class : Class 9
yes it 1 and 3 only

## Ans 2:

Class : Class 9
3 and 1 only

Subject :NSO    Class : Class 8

Class : Class 1

The electonic configuration of manganese (atomic number=25) is 1s2 2s2 2p6 3s2 3p6 3d5 4s2

Subject :NSO    Class : Class 4

Subject :NSO    Class : Class 6

Class : Class 7

## Ans 2:

Class : Class 7
I WANT EXPLAINATION

## Ans 3:

Class : Class 5
not a because The response of plant towards the sun is called phototropism

## Ans 4:

Class : Class 6
Statement 4 is wrong because hibernation is done to escape cold weather not hot , so SOF is wwwwwwwwwwrrrrrrrrrrrrrrrrrrrooooooooooooooonnnnnnnnnnnnnnnngggggggggggggggggggg

## Ans 5:

Class : Class 8
YES The correct answer is (A).

## Ans 6:

Class : Class 6
statement 4 is wrong and none of the options is correct as response of plants towards earth is called geotropism

## Ans 7:

Class : Class 6
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

## Ans 8:

Class : Class 6

Subject :NSO    Class : Class 8

## Ans 1:

Class : Class 8
All the properties friction are in use. Hence, the correct one option 'D'.

## Ans 2:

Class : Class 8

Subject :NSO    Class : Class 8

Class : Class 1

Subject :NSO    Class : Class 3

## Ans 1:

Class : Class 1
B) 2 and 3

Subject :NSO    Class : Class 7

Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.

Subject :NSO    Class : Class 7

Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.

Subject :NSO    Class : Class 5

Class : Class 5
c

## Ans 2:

Class : Class 5
mechanical into kinectic

## Ans 3:

Class : Class 5
Its option (c), mechanical into kinetic

## Ans 4:

Class : Class 5
mechanical,kinetic (c)

Class : Class 5

Class : Class 5
c

Class : Class 5
c

## Ans 8:

Class : Class 4
Mechanical,kinetic