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Nezavi [6.7K]
2 years ago
14

What mass of a material with density Ï is required to make a hollow spherical shell having inner radius r1 and outer radius r2?

(use any variable or symbol stated above as necessary.)?
Physics
1 answer:
inysia [295]2 years ago
3 0
<span>Yes, there are! r1 and r2 are numbers. The volume of the hollow shell is 4 π 3 ( r 3 1 − r 3 2 ) 4π3(r13−r23). Now multiply by ρ to get the mass.</span>
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Answer:

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Answer:

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Explanation:

Potential enegy on Earth is given by the relationship:

P.E. = mgh, where m is mass, g is the acceleration due to Earth's gravity, and h is height. Since we are given metric values, we will look for an answer that is consistent with Joules, the metric measure of energy. 1 Joule is defined as 1 kg*m^2/s^2, so we wnat units of kg, m, and sec.

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Since we only have 2 sig figs, and since 1kJ =- 1000J

We can state the potential energy is 47kJ.

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frutty [35]
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