270109
Theoretically which of the following are best lubricants?
1 Solids
2 Liquids
3 Gases
4 Both 2 and 3
Explanation:
Laws of Motion
270110
A block ' \(B\) ' rests on ' \(A\) '. A rests on a horizontal surface ' \(C\) ' which is frictionless. There is friction between \(A\) and \(B\). If ' \(B\) ' is pulled to the right
1 B moves forward and A to the left
2 ' \(B\) ' only moves to the left
3 ' \(B\) ' does not move
4 ' \(A\) ' and ' \(B\) ' move together to the right
Explanation:
Laws of Motion
270111
Sand is dusted to the railway tracks during rainy season to
1 make it always wet
2 increase friction
3 to reduce consumption of fuel
4 make it always dry
Explanation:
Laws of Motion
270112
With increase of temperature, the frictional force acting between two surfaces
270109
Theoretically which of the following are best lubricants?
1 Solids
2 Liquids
3 Gases
4 Both 2 and 3
Explanation:
Laws of Motion
270110
A block ' \(B\) ' rests on ' \(A\) '. A rests on a horizontal surface ' \(C\) ' which is frictionless. There is friction between \(A\) and \(B\). If ' \(B\) ' is pulled to the right
1 B moves forward and A to the left
2 ' \(B\) ' only moves to the left
3 ' \(B\) ' does not move
4 ' \(A\) ' and ' \(B\) ' move together to the right
Explanation:
Laws of Motion
270111
Sand is dusted to the railway tracks during rainy season to
1 make it always wet
2 increase friction
3 to reduce consumption of fuel
4 make it always dry
Explanation:
Laws of Motion
270112
With increase of temperature, the frictional force acting between two surfaces
270109
Theoretically which of the following are best lubricants?
1 Solids
2 Liquids
3 Gases
4 Both 2 and 3
Explanation:
Laws of Motion
270110
A block ' \(B\) ' rests on ' \(A\) '. A rests on a horizontal surface ' \(C\) ' which is frictionless. There is friction between \(A\) and \(B\). If ' \(B\) ' is pulled to the right
1 B moves forward and A to the left
2 ' \(B\) ' only moves to the left
3 ' \(B\) ' does not move
4 ' \(A\) ' and ' \(B\) ' move together to the right
Explanation:
Laws of Motion
270111
Sand is dusted to the railway tracks during rainy season to
1 make it always wet
2 increase friction
3 to reduce consumption of fuel
4 make it always dry
Explanation:
Laws of Motion
270112
With increase of temperature, the frictional force acting between two surfaces
270109
Theoretically which of the following are best lubricants?
1 Solids
2 Liquids
3 Gases
4 Both 2 and 3
Explanation:
Laws of Motion
270110
A block ' \(B\) ' rests on ' \(A\) '. A rests on a horizontal surface ' \(C\) ' which is frictionless. There is friction between \(A\) and \(B\). If ' \(B\) ' is pulled to the right
1 B moves forward and A to the left
2 ' \(B\) ' only moves to the left
3 ' \(B\) ' does not move
4 ' \(A\) ' and ' \(B\) ' move together to the right
Explanation:
Laws of Motion
270111
Sand is dusted to the railway tracks during rainy season to
1 make it always wet
2 increase friction
3 to reduce consumption of fuel
4 make it always dry
Explanation:
Laws of Motion
270112
With increase of temperature, the frictional force acting between two surfaces
270109
Theoretically which of the following are best lubricants?
1 Solids
2 Liquids
3 Gases
4 Both 2 and 3
Explanation:
Laws of Motion
270110
A block ' \(B\) ' rests on ' \(A\) '. A rests on a horizontal surface ' \(C\) ' which is frictionless. There is friction between \(A\) and \(B\). If ' \(B\) ' is pulled to the right
1 B moves forward and A to the left
2 ' \(B\) ' only moves to the left
3 ' \(B\) ' does not move
4 ' \(A\) ' and ' \(B\) ' move together to the right
Explanation:
Laws of Motion
270111
Sand is dusted to the railway tracks during rainy season to
1 make it always wet
2 increase friction
3 to reduce consumption of fuel
4 make it always dry
Explanation:
Laws of Motion
270112
With increase of temperature, the frictional force acting between two surfaces