The diameter of a copper sphere is 18 cm. The sphere is melted and is drawn into a long wire of uniform circular cross-section. If the length of the wire is 108m, the diameter of the wire is
1 cm^(3) of gold is drawn into a wire 0.1 mm in diameter. Find the length of the wire.
A cubic cm of gold is drawn into a wire 0.1 mm in diameter, find the length of the wire.
Two wires A and B equal mass and of the same metal are taken. The diameter of the wire A is half the diameter of wire B. If the resistance of wire A is 24 Omega , calculatate the resistance of wire B.
The diameter of a copper sphere is 12 cm. The sphere is melted and is drawn into a long wire of uniform circular cross-section. If the length of the wire is 48 cm, find its diameter
A solid sphere of diameter 60 mm is melted to stretch into a wire of length 144 cm. What is the diameter of the wire?
When a weight of 5 kg is suspended from a copper wire of length 30 m and diameter 0.5 mm , the length of the wire increases by 2.4 cm . If the diameter is doubled, the extension produced is