A uniform plank of length 5.0 m and weight 225 n rests, Ask an Expert

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Q. An ice cube of volume 10.60 cm3 is at first at a temperature of -9.3°C. How much heat is necessary to convert this ice cube into steam?

Q. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 415 N walk on the overhanging part of the plank before it just begins to tip?

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