If the doors of a refrigerator kept in a room are left open, the room will gradually get heated. The refrigerator’s motor generates heat while trying to cool the room, resulting in more heat being expelled than removed.
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When a stone is brought from the surface of the moon to the Earth, its mass will remain the same, as mass is an intrinsic property unaffected by gravitational fields. However, its weight will change due to Earth’s stronger gravity, ...