A metal sphere is melted and recasted into a cone.Both have same radii. Which solid has greater surface area? Justify.

A metal sphere is melted and recasted into a cone.Both have same radii.Find the relationship between the height of the cone and the radiusof the sphere.

A solid sphere of radius '7 cm' is melted and recast into a cone of same radius of the sphere. Calculate the height of the cone.

a) Which one has greater size, Na or K? b) Justify your answer.

A metal sphere of diameter 24 centimetres is melted and recast into cones of base radius and height 6 centimetres. How many such cones are made?

A motorcycle and a bus are moving with same momentum.Which of them has greater kinetic energy?Justify.

A metallic sphere of radius '4 cm' is melted and recast. How many small spheres of radius '1 cm' will get from it?

A metal sphere of radius 12 centimetres is melted and recast into '27 .' small spheres of equal size. What is the radius of each small sphere?

"A heavy and light body have same kinetic energy." Which one has greater momentum? Why?

A car and a bus are travelling with the same velocity. Which has greater momentum ? Why?