(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Estimate the number of Ping - Pong balls that would fit into a typical-size room (without being crushed). In your solution state the quantities you measure or estimate and the values you take for them. (Assume 25% of the space cannot be filled due to spherical packing.)

(a) Find the volume of the room (in m^3)

(b) Find the volume of a ball (in cm^3)

(c) Find the number of balls (order of magnitude only) (balls)

2. Relevant equations

75% of 1000m^3 = 750m^3

750m^3(1 000 000 cm^3/1m^3)

3. The attempt at a solution

(a)I said that an average room had 1000m^3

It said "Your response differs from the correct answer by orders of magnitude."

(b) I said the volume of a ball had 100cm^3

It said "Your response differs from the correct answer by more than 100%."

(c) I said the number of balls equaled 7.5e6

It said "Your response differs from the correct answer by more than 100%."

Any help would be greatly appreciated!

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# Ping-Pong balls in a room?

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