Q1 a 1000 rm kg wrecking ball hangs from a 15 rm m-long

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Reference no: EM13353720

Q1. A 1000 {rm kg} wrecking ball hangs from a 15 {rm m}-long cable. The ball is pulled back until the cable makes an angle of 25.0^circle with the vertical. By how much has the gravitational potential energy of the ball changed?

Q2. If she is served 240 of coffee at 84 in a well-insulated container, how much ice at 0 must she add to obtain a final temperature of 30?

Q3. If the weight of a room full of water is so great, why don't the first floors of houses built over basements all collapse as flooded to the ceiling?

Reference no: EM13353720

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