Physics
A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:

50 J
75 J
100 J
150 J

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Physics
The nature of fuse wire is

High resistance and high melting point.
High resistance and low melting point.
Low resistance and high melting point.
Low resistance and low melting point.

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