At zion national park a loud shout produces the echo 3.40 s, Ask an Expert

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Q. The density of gold is 1.93×10^4 {rm{kg/m}}^{rm{3}}. 180 {rm g} of gold is shaped into a cube. What is the length of each edge?

Q. At Zion National Park a loud shout produces the echo 3.40 s later from a colourful sandstone cliff. How far away is the cliff?

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